зеркало из https://github.com/mozilla/gecko-dev.git
3105 строки
108 KiB
C++
3105 строки
108 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "TextControlState.h"
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#include "mozilla/TextInputListener.h"
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#include "nsCOMPtr.h"
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#include "nsView.h"
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#include "nsCaret.h"
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#include "nsLayoutCID.h"
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#include "nsITextControlFrame.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsTextControlFrame.h"
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#include "nsIControllers.h"
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#include "nsIControllerContext.h"
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#include "nsAttrValue.h"
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#include "nsAttrValueInlines.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIDOMEventListener.h"
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#include "nsIWidget.h"
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#include "nsIDocumentEncoder.h"
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#include "nsPIDOMWindow.h"
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#include "nsServiceManagerUtils.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/EventListenerManager.h"
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#include "nsContentUtils.h"
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#include "mozilla/Preferences.h"
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#include "nsTextNode.h"
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#include "nsIController.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/InputEventOptions.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/dom/HTMLTextAreaElement.h"
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#include "mozilla/dom/Text.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "nsFrameSelection.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/ShortcutKeys.h"
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#include "mozilla/KeyEventHandler.h"
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#include "mozilla/dom/KeyboardEvent.h"
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#include "mozilla/ScrollTypes.h"
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namespace mozilla {
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using namespace dom;
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/*****************************************************************************
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* TextControlElement
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*****************************************************************************/
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NS_IMPL_CYCLE_COLLECTION_CLASS(TextControlElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(
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TextControlElement, nsGenericHTMLFormElementWithState)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(
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TextControlElement, nsGenericHTMLFormElementWithState)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(
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TextControlElement, nsGenericHTMLFormElementWithState)
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/*static*/
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bool TextControlElement::GetWrapPropertyEnum(
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nsIContent* aContent, TextControlElement::nsHTMLTextWrap& aWrapProp) {
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// soft is the default; "physical" defaults to soft as well because all other
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// browsers treat it that way and there is no real reason to maintain physical
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// and virtual as separate entities if no one else does. Only hard and off
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// do anything different.
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aWrapProp = eHTMLTextWrap_Soft; // the default
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if (!aContent->IsHTMLElement()) {
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return false;
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}
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static mozilla::dom::Element::AttrValuesArray strings[] = {
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nsGkAtoms::HARD, nsGkAtoms::OFF, nullptr};
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switch (aContent->AsElement()->FindAttrValueIn(
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kNameSpaceID_None, nsGkAtoms::wrap, strings, eIgnoreCase)) {
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case 0:
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aWrapProp = eHTMLTextWrap_Hard;
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break;
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case 1:
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aWrapProp = eHTMLTextWrap_Off;
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break;
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}
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return true;
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}
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/*static*/
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already_AddRefed<TextControlElement>
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TextControlElement::GetTextControlElementFromEditingHost(nsIContent* aHost) {
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if (!aHost) {
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return nullptr;
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}
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RefPtr<TextControlElement> parent =
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TextControlElement::FromNodeOrNull(aHost->GetParent());
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return parent.forget();
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}
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using ValueChangeKind = TextControlElement::ValueChangeKind;
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inline nsresult SetEditorFlagsIfNecessary(EditorBase& aEditorBase,
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uint32_t aFlags) {
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if (aEditorBase.Flags() == aFlags) {
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return NS_OK;
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}
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return aEditorBase.SetFlags(aFlags);
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}
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/*****************************************************************************
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* mozilla::AutoInputEventSuppresser
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*****************************************************************************/
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class MOZ_STACK_CLASS AutoInputEventSuppresser final {
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public:
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explicit AutoInputEventSuppresser(TextEditor* aTextEditor)
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: mTextEditor(aTextEditor),
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// To protect against a reentrant call to SetValue, we check whether
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// another SetValue is already happening for this editor. If it is,
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// we must wait until we unwind to re-enable oninput events.
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mOuterTransaction(aTextEditor->IsSuppressingDispatchingInputEvent()) {
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MOZ_ASSERT(mTextEditor);
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mTextEditor->SuppressDispatchingInputEvent(true);
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}
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~AutoInputEventSuppresser() {
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mTextEditor->SuppressDispatchingInputEvent(mOuterTransaction);
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}
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private:
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RefPtr<TextEditor> mTextEditor;
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bool mOuterTransaction;
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};
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/*****************************************************************************
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* mozilla::RestoreSelectionState
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*****************************************************************************/
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class RestoreSelectionState : public Runnable {
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public:
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RestoreSelectionState(TextControlState* aState, nsTextControlFrame* aFrame)
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: Runnable("RestoreSelectionState"),
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mFrame(aFrame),
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mTextControlState(aState) {}
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MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
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if (!mTextControlState) {
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return NS_OK;
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}
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AutoHideSelectionChanges hideSelectionChanges(
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mFrame->GetConstFrameSelection());
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if (mFrame) {
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// SetSelectionRange leads to
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// Selection::AddRangeAndSelectFramesAndNotifyListeners which flushes
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// Layout - need to block script to avoid nested PrepareEditor calls (bug
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// 642800).
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nsAutoScriptBlocker scriptBlocker;
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TextControlState::SelectionProperties& properties =
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mTextControlState->GetSelectionProperties();
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if (properties.IsDirty()) {
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mFrame->SetSelectionRange(properties.GetStart(), properties.GetEnd(),
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properties.GetDirection());
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}
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if (!mTextControlState->mSelectionRestoreEagerInit) {
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mTextControlState->HideSelectionIfBlurred();
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}
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mTextControlState->mSelectionRestoreEagerInit = false;
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}
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if (mTextControlState) {
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mTextControlState->FinishedRestoringSelection();
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}
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return NS_OK;
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}
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// Let the text editor tell us we're no longer relevant - avoids use of
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// AutoWeakFrame
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void Revoke() {
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mFrame = nullptr;
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mTextControlState = nullptr;
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}
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private:
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nsTextControlFrame* mFrame;
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TextControlState* mTextControlState;
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};
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/*****************************************************************************
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* mozilla::AutoRestoreEditorState
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*****************************************************************************/
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class MOZ_RAII AutoRestoreEditorState final {
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public:
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explicit AutoRestoreEditorState(
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TextEditor* aTextEditor MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: mTextEditor(aTextEditor),
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mSavedFlags(mTextEditor->Flags()),
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mSavedMaxLength(mTextEditor->MaxTextLength()) {
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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MOZ_ASSERT(mTextEditor);
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// EditorBase::SetFlags() is a virtual method. Even though it does nothing
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// if new flags and current flags are same, the calling cost causes
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// appearing the method in profile. So, this class should check if it's
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// necessary to call.
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uint32_t flags = mSavedFlags;
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flags &= ~(nsIEditor::eEditorDisabledMask);
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flags &= ~(nsIEditor::eEditorReadonlyMask);
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flags |= nsIEditor::eEditorDontEchoPassword;
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if (mSavedFlags != flags) {
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mTextEditor->SetFlags(flags);
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}
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mTextEditor->SetMaxTextLength(-1);
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}
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~AutoRestoreEditorState() {
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mTextEditor->SetMaxTextLength(mSavedMaxLength);
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SetEditorFlagsIfNecessary(*mTextEditor, mSavedFlags);
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}
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private:
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TextEditor* mTextEditor;
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uint32_t mSavedFlags;
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int32_t mSavedMaxLength;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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/*****************************************************************************
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* mozilla::AutoDisableUndo
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*****************************************************************************/
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class MOZ_RAII AutoDisableUndo final {
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public:
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explicit AutoDisableUndo(
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TextEditor* aTextEditor MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: mTextEditor(aTextEditor), mNumberOfMaximumTransactions(0) {
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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MOZ_ASSERT(mTextEditor);
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mNumberOfMaximumTransactions =
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mTextEditor ? mTextEditor->NumberOfMaximumTransactions() : 0;
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DebugOnly<bool> disabledUndoRedo = mTextEditor->DisableUndoRedo();
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NS_WARNING_ASSERTION(disabledUndoRedo,
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"Failed to disable undo/redo transactions");
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}
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~AutoDisableUndo() {
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// Don't change enable/disable of undo/redo if it's enabled after
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// it's disabled by the constructor because we shouldn't change
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// the maximum undo/redo count to the old value.
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if (mTextEditor->IsUndoRedoEnabled()) {
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return;
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}
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// If undo/redo was enabled, mNumberOfMaximumTransactions is -1 or lager
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// than 0. Only when it's 0, it was disabled.
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if (mNumberOfMaximumTransactions) {
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DebugOnly<bool> enabledUndoRedo =
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mTextEditor->EnableUndoRedo(mNumberOfMaximumTransactions);
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NS_WARNING_ASSERTION(enabledUndoRedo,
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"Failed to enable undo/redo transactions");
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} else {
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DebugOnly<bool> disabledUndoRedo = mTextEditor->DisableUndoRedo();
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NS_WARNING_ASSERTION(disabledUndoRedo,
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"Failed to disable undo/redo transactions");
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}
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}
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private:
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TextEditor* mTextEditor;
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int32_t mNumberOfMaximumTransactions;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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static bool SuppressEventHandlers(nsPresContext* aPresContext) {
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bool suppressHandlers = false;
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if (aPresContext) {
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// Right now we only suppress event handlers and controller manipulation
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// when in a print preview or print context!
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// In the current implementation, we only paginate when
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// printing or in print preview.
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suppressHandlers = aPresContext->IsPaginated();
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}
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return suppressHandlers;
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}
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/*****************************************************************************
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* mozilla::TextInputSelectionController
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*****************************************************************************/
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class TextInputSelectionController final : public nsSupportsWeakReference,
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public nsISelectionController {
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~TextInputSelectionController() = default;
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(TextInputSelectionController,
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nsISelectionController)
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TextInputSelectionController(nsFrameSelection* aSel, PresShell* aPresShell,
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nsIContent* aLimiter);
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void SetScrollableFrame(nsIScrollableFrame* aScrollableFrame);
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nsFrameSelection* GetConstFrameSelection() { return mFrameSelection; }
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// Will return null if !mFrameSelection.
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Selection* GetSelection(SelectionType aSelectionType);
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// NSISELECTIONCONTROLLER INTERFACES
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NS_IMETHOD SetDisplaySelection(int16_t toggle) override;
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NS_IMETHOD GetDisplaySelection(int16_t* _retval) override;
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NS_IMETHOD SetSelectionFlags(int16_t aInEnable) override;
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NS_IMETHOD GetSelectionFlags(int16_t* aOutEnable) override;
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NS_IMETHOD GetSelectionFromScript(RawSelectionType aRawSelectionType,
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Selection** aSelection) override;
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Selection* GetSelection(RawSelectionType aRawSelectionType) override;
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NS_IMETHOD ScrollSelectionIntoView(RawSelectionType aRawSelectionType,
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int16_t aRegion, int16_t aFlags) override;
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NS_IMETHOD RepaintSelection(RawSelectionType aRawSelectionType) override;
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nsresult RepaintSelection(nsPresContext* aPresContext,
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SelectionType aSelectionType);
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NS_IMETHOD SetCaretEnabled(bool enabled) override;
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NS_IMETHOD SetCaretReadOnly(bool aReadOnly) override;
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NS_IMETHOD GetCaretEnabled(bool* _retval) override;
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NS_IMETHOD GetCaretVisible(bool* _retval) override;
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NS_IMETHOD SetCaretVisibilityDuringSelection(bool aVisibility) override;
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NS_IMETHOD PhysicalMove(int16_t aDirection, int16_t aAmount,
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bool aExtend) override;
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NS_IMETHOD CharacterMove(bool aForward, bool aExtend) override;
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NS_IMETHOD CharacterExtendForDelete() override;
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NS_IMETHOD CharacterExtendForBackspace() override;
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NS_IMETHOD WordMove(bool aForward, bool aExtend) override;
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NS_IMETHOD WordExtendForDelete(bool aForward) override;
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NS_IMETHOD LineMove(bool aForward, bool aExtend) override;
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NS_IMETHOD IntraLineMove(bool aForward, bool aExtend) override;
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MOZ_CAN_RUN_SCRIPT
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NS_IMETHOD PageMove(bool aForward, bool aExtend) override;
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NS_IMETHOD CompleteScroll(bool aForward) override;
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NS_IMETHOD CompleteMove(bool aForward, bool aExtend) override;
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NS_IMETHOD ScrollPage(bool aForward) override;
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NS_IMETHOD ScrollLine(bool aForward) override;
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NS_IMETHOD ScrollCharacter(bool aRight) override;
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NS_IMETHOD SelectAll(void) override;
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NS_IMETHOD CheckVisibility(nsINode* node, int16_t startOffset,
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int16_t EndOffset, bool* _retval) override;
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virtual nsresult CheckVisibilityContent(nsIContent* aNode,
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int16_t aStartOffset,
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int16_t aEndOffset,
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bool* aRetval) override;
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private:
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RefPtr<nsFrameSelection> mFrameSelection;
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nsCOMPtr<nsIContent> mLimiter;
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nsIScrollableFrame* mScrollFrame;
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nsWeakPtr mPresShellWeak;
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};
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NS_IMPL_CYCLE_COLLECTING_ADDREF(TextInputSelectionController)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(TextInputSelectionController)
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NS_INTERFACE_TABLE_HEAD(TextInputSelectionController)
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NS_INTERFACE_TABLE(TextInputSelectionController, nsISelectionController,
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nsISelectionDisplay, nsISupportsWeakReference)
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NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(TextInputSelectionController)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_WEAK(TextInputSelectionController, mFrameSelection,
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mLimiter)
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TextInputSelectionController::TextInputSelectionController(
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nsFrameSelection* aSel, PresShell* aPresShell, nsIContent* aLimiter)
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: mScrollFrame(nullptr) {
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if (aSel && aPresShell) {
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mFrameSelection = aSel; // we are the owner now!
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mLimiter = aLimiter;
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bool accessibleCaretEnabled =
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PresShell::AccessibleCaretEnabled(aLimiter->OwnerDoc()->GetDocShell());
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mFrameSelection->Init(aPresShell, mLimiter, accessibleCaretEnabled);
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mPresShellWeak = do_GetWeakReference(aPresShell);
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}
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}
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void TextInputSelectionController::SetScrollableFrame(
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nsIScrollableFrame* aScrollableFrame) {
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mScrollFrame = aScrollableFrame;
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if (!mScrollFrame && mFrameSelection) {
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mFrameSelection->DisconnectFromPresShell();
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mFrameSelection = nullptr;
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}
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}
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Selection* TextInputSelectionController::GetSelection(
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SelectionType aSelectionType) {
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if (!mFrameSelection) {
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return nullptr;
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}
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return mFrameSelection->GetSelection(aSelectionType);
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}
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NS_IMETHODIMP
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TextInputSelectionController::SetDisplaySelection(int16_t aToggle) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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mFrameSelection->SetDisplaySelection(aToggle);
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return NS_OK;
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}
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NS_IMETHODIMP
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TextInputSelectionController::GetDisplaySelection(int16_t* aToggle) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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*aToggle = mFrameSelection->GetDisplaySelection();
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return NS_OK;
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}
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NS_IMETHODIMP
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TextInputSelectionController::SetSelectionFlags(int16_t aToggle) {
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return NS_OK; // stub this out. not used in input
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}
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NS_IMETHODIMP
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TextInputSelectionController::GetSelectionFlags(int16_t* aOutEnable) {
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*aOutEnable = nsISelectionDisplay::DISPLAY_TEXT;
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return NS_OK;
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}
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NS_IMETHODIMP
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TextInputSelectionController::GetSelectionFromScript(
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RawSelectionType aRawSelectionType, Selection** aSelection) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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*aSelection =
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mFrameSelection->GetSelection(ToSelectionType(aRawSelectionType));
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// GetSelection() fails only when aRawSelectionType is invalid value.
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if (!(*aSelection)) {
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return NS_ERROR_INVALID_ARG;
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}
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NS_ADDREF(*aSelection);
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return NS_OK;
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}
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Selection* TextInputSelectionController::GetSelection(
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RawSelectionType aRawSelectionType) {
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return GetSelection(ToSelectionType(aRawSelectionType));
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}
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NS_IMETHODIMP
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TextInputSelectionController::ScrollSelectionIntoView(
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RawSelectionType aRawSelectionType, int16_t aRegion, int16_t aFlags) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
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return frameSelection->ScrollSelectionIntoView(
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ToSelectionType(aRawSelectionType), aRegion, aFlags);
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}
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NS_IMETHODIMP
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TextInputSelectionController::RepaintSelection(
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RawSelectionType aRawSelectionType) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
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return frameSelection->RepaintSelection(ToSelectionType(aRawSelectionType));
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}
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nsresult TextInputSelectionController::RepaintSelection(
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nsPresContext* aPresContext, SelectionType aSelectionType) {
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if (!mFrameSelection) {
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return NS_ERROR_NULL_POINTER;
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}
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RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
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return frameSelection->RepaintSelection(aSelectionType);
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}
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NS_IMETHODIMP
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TextInputSelectionController::SetCaretEnabled(bool enabled) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
RefPtr<PresShell> presShell = do_QueryReferent(mPresShellWeak);
|
|
if (!presShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// tell the pres shell to enable the caret, rather than settings its
|
|
// visibility directly. this way the presShell's idea of caret visibility is
|
|
// maintained.
|
|
presShell->SetCaretEnabled(enabled);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::SetCaretReadOnly(bool aReadOnly) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
nsresult rv;
|
|
RefPtr<PresShell> presShell = do_QueryReferent(mPresShellWeak, &rv);
|
|
if (!presShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (!caret) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
Selection* selection = mFrameSelection->GetSelection(SelectionType::eNormal);
|
|
if (selection) {
|
|
caret->SetCaretReadOnly(aReadOnly);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::GetCaretEnabled(bool* _retval) {
|
|
return GetCaretVisible(_retval);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::GetCaretVisible(bool* _retval) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
nsresult rv;
|
|
RefPtr<PresShell> presShell = do_QueryReferent(mPresShellWeak, &rv);
|
|
if (!presShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (!caret) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
*_retval = caret->IsVisible();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::SetCaretVisibilityDuringSelection(
|
|
bool aVisibility) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
nsresult rv;
|
|
RefPtr<PresShell> presShell = do_QueryReferent(mPresShellWeak, &rv);
|
|
if (!presShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (!caret) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
Selection* selection = mFrameSelection->GetSelection(SelectionType::eNormal);
|
|
if (selection) {
|
|
caret->SetVisibilityDuringSelection(aVisibility);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::PhysicalMove(int16_t aDirection, int16_t aAmount,
|
|
bool aExtend) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->PhysicalMove(aDirection, aAmount, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CharacterMove(bool aForward, bool aExtend) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->CharacterMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CharacterExtendForDelete() {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->CharacterExtendForDelete();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CharacterExtendForBackspace() {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->CharacterExtendForBackspace();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::WordMove(bool aForward, bool aExtend) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->WordMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::WordExtendForDelete(bool aForward) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->WordExtendForDelete(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::LineMove(bool aForward, bool aExtend) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
nsresult result = frameSelection->LineMove(aForward, aExtend);
|
|
if (NS_FAILED(result)) {
|
|
result = CompleteMove(aForward, aExtend);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::IntraLineMove(bool aForward, bool aExtend) {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->IntraLineMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::PageMove(bool aForward, bool aExtend) {
|
|
// expected behavior for PageMove is to scroll AND move the caret
|
|
// and to remain relative position of the caret in view. see Bug 4302.
|
|
if (mScrollFrame) {
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
nsIFrame* scrollFrame = do_QueryFrame(mScrollFrame);
|
|
// We won't scroll parent scrollable element of mScrollFrame. Therefore,
|
|
// this may be handled when mScrollFrame is completely outside of the view.
|
|
// In such case, user may be confused since they might have wanted to
|
|
// scroll a parent scrollable element. For making clearer which element
|
|
// handles PageDown/PageUp, we should move selection into view even if
|
|
// selection is not changed.
|
|
return frameSelection->PageMove(aForward, aExtend, scrollFrame,
|
|
nsFrameSelection::SelectionIntoView::Yes);
|
|
}
|
|
// Similarly, if there is no scrollable frame, we should move the editor
|
|
// frame into the view for making it clearer which element handles
|
|
// PageDown/PageUp.
|
|
return ScrollSelectionIntoView(
|
|
nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS |
|
|
nsISelectionController::SCROLL_FOR_CARET_MOVE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CompleteScroll(bool aForward) {
|
|
if (!mScrollFrame) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
mScrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1), ScrollUnit::WHOLE,
|
|
ScrollMode::Instant);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CompleteMove(bool aForward, bool aExtend) {
|
|
if (NS_WARN_IF(!mFrameSelection)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
|
|
// grab the parent / root DIV for this text widget
|
|
nsIContent* parentDIV = frameSelection->GetLimiter();
|
|
if (!parentDIV) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// make the caret be either at the very beginning (0) or the very end
|
|
int32_t offset = 0;
|
|
CaretAssociationHint hint = CARET_ASSOCIATE_BEFORE;
|
|
if (aForward) {
|
|
offset = parentDIV->GetChildCount();
|
|
|
|
// Prevent the caret from being placed after the last
|
|
// BR node in the content tree!
|
|
|
|
if (offset > 0) {
|
|
nsIContent* child = parentDIV->GetLastChild();
|
|
|
|
if (child->IsHTMLElement(nsGkAtoms::br)) {
|
|
--offset;
|
|
hint = CARET_ASSOCIATE_AFTER; // for Bug 106855
|
|
}
|
|
}
|
|
}
|
|
|
|
const nsFrameSelection::FocusMode focusMode =
|
|
aExtend ? nsFrameSelection::FocusMode::kExtendSelection
|
|
: nsFrameSelection::FocusMode::kCollapseToNewPoint;
|
|
frameSelection->HandleClick(parentDIV, offset, offset, focusMode, hint);
|
|
|
|
// if we got this far, attempt to scroll no matter what the above result is
|
|
return CompleteScroll(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::ScrollPage(bool aForward) {
|
|
if (!mScrollFrame) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
mScrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1), ScrollUnit::PAGES,
|
|
ScrollMode::Smooth);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::ScrollLine(bool aForward) {
|
|
if (!mScrollFrame) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
mScrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1), ScrollUnit::LINES,
|
|
ScrollMode::Smooth);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::ScrollCharacter(bool aRight) {
|
|
if (!mScrollFrame) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
mScrollFrame->ScrollBy(nsIntPoint(aRight ? 1 : -1, 0), ScrollUnit::LINES,
|
|
ScrollMode::Smooth);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::SelectAll() {
|
|
if (!mFrameSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mFrameSelection;
|
|
return frameSelection->SelectAll();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputSelectionController::CheckVisibility(nsINode* node,
|
|
int16_t startOffset,
|
|
int16_t EndOffset,
|
|
bool* _retval) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
nsresult rv;
|
|
nsCOMPtr<nsISelectionController> presShell =
|
|
do_QueryReferent(mPresShellWeak, &rv);
|
|
if (!presShell) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return presShell->CheckVisibility(node, startOffset, EndOffset, _retval);
|
|
}
|
|
|
|
nsresult TextInputSelectionController::CheckVisibilityContent(
|
|
nsIContent* aNode, int16_t aStartOffset, int16_t aEndOffset,
|
|
bool* aRetval) {
|
|
if (!mPresShellWeak) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
nsCOMPtr<nsISelectionController> presShell = do_QueryReferent(mPresShellWeak);
|
|
if (NS_WARN_IF(!presShell)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return presShell->CheckVisibilityContent(aNode, aStartOffset, aEndOffset,
|
|
aRetval);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* mozilla::TextInputListener
|
|
*****************************************************************************/
|
|
|
|
TextInputListener::TextInputListener(TextControlElement* aTxtCtrlElement)
|
|
: mFrame(nullptr),
|
|
mTxtCtrlElement(aTxtCtrlElement),
|
|
mTextControlState(aTxtCtrlElement ? aTxtCtrlElement->GetTextControlState()
|
|
: nullptr),
|
|
mSelectionWasCollapsed(true),
|
|
mHadUndoItems(false),
|
|
mHadRedoItems(false),
|
|
mSettingValue(false),
|
|
mSetValueChanged(true),
|
|
mListeningToSelectionChange(false) {}
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(TextInputListener)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(TextInputListener)
|
|
|
|
NS_INTERFACE_MAP_BEGIN(TextInputListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMEventListener)
|
|
NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(TextInputListener)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(TextInputListener)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(TextInputListener)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(TextInputListener)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
void TextInputListener::OnSelectionChange(Selection& aSelection,
|
|
int16_t aReason) {
|
|
if (!mListeningToSelectionChange) {
|
|
return;
|
|
}
|
|
|
|
AutoWeakFrame weakFrame = mFrame;
|
|
|
|
// Fire the select event
|
|
// The specs don't exactly say when we should fire the select event.
|
|
// IE: Whenever you add/remove a character to/from the selection. Also
|
|
// each time for select all. Also if you get to the end of the text
|
|
// field you will get new event for each keypress or a continuous
|
|
// stream of events if you use the mouse. IE will fire select event
|
|
// when the selection collapses to nothing if you are holding down
|
|
// the shift or mouse button.
|
|
// Mozilla: If we have non-empty selection we will fire a new event for each
|
|
// keypress (or mouseup) if the selection changed. Mozilla will also
|
|
// create the event each time select all is called, even if
|
|
// everything was previously selected, becase technically select all
|
|
// will first collapse and then extend. Mozilla will never create an
|
|
// event if the selection collapses to nothing.
|
|
bool collapsed = aSelection.IsCollapsed();
|
|
if (!collapsed && (aReason & (nsISelectionListener::MOUSEUP_REASON |
|
|
nsISelectionListener::KEYPRESS_REASON |
|
|
nsISelectionListener::SELECTALL_REASON))) {
|
|
if (nsCOMPtr<nsIContent> content = mFrame->GetContent()) {
|
|
if (nsCOMPtr<Document> doc = content->GetComposedDoc()) {
|
|
if (RefPtr<PresShell> presShell = doc->GetPresShell()) {
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetEvent event(true, eFormSelect);
|
|
|
|
presShell->HandleEventWithTarget(&event, mFrame, content, &status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if the collapsed state did not change, don't fire notifications
|
|
if (collapsed == mSelectionWasCollapsed) {
|
|
return;
|
|
}
|
|
|
|
mSelectionWasCollapsed = collapsed;
|
|
|
|
if (!weakFrame.IsAlive() || !mFrame ||
|
|
!nsContentUtils::IsFocusedContent(mFrame->GetContent())) {
|
|
return;
|
|
}
|
|
|
|
UpdateTextInputCommands(NS_LITERAL_STRING("select"), &aSelection, aReason);
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT
|
|
static void DoCommandCallback(Command aCommand, void* aData) {
|
|
nsTextControlFrame* frame = static_cast<nsTextControlFrame*>(aData);
|
|
nsIContent* content = frame->GetContent();
|
|
|
|
nsCOMPtr<nsIControllers> controllers;
|
|
HTMLInputElement* input = HTMLInputElement::FromNode(content);
|
|
if (input) {
|
|
input->GetControllers(getter_AddRefs(controllers));
|
|
} else {
|
|
HTMLTextAreaElement* textArea = HTMLTextAreaElement::FromNode(content);
|
|
|
|
if (textArea) {
|
|
textArea->GetControllers(getter_AddRefs(controllers));
|
|
}
|
|
}
|
|
|
|
if (!controllers) {
|
|
NS_WARNING("Could not get controllers");
|
|
return;
|
|
}
|
|
|
|
const char* commandStr = WidgetKeyboardEvent::GetCommandStr(aCommand);
|
|
|
|
nsCOMPtr<nsIController> controller;
|
|
controllers->GetControllerForCommand(commandStr, getter_AddRefs(controller));
|
|
if (!controller) {
|
|
return;
|
|
}
|
|
|
|
bool commandEnabled;
|
|
if (NS_WARN_IF(NS_FAILED(
|
|
controller->IsCommandEnabled(commandStr, &commandEnabled)))) {
|
|
return;
|
|
}
|
|
if (commandEnabled) {
|
|
controller->DoCommand(commandStr);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextInputListener::HandleEvent(Event* aEvent) {
|
|
if (aEvent->DefaultPrevented()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aEvent->IsTrusted()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<KeyboardEvent> keyEvent = aEvent->AsKeyboardEvent();
|
|
if (!keyEvent) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
WidgetKeyboardEvent* widgetKeyEvent =
|
|
aEvent->WidgetEventPtr()->AsKeyboardEvent();
|
|
if (!widgetKeyEvent) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
KeyEventHandler* keyHandlers = ShortcutKeys::GetHandlers(
|
|
mTxtCtrlElement->IsTextArea() ? HandlerType::eTextArea
|
|
: HandlerType::eInput);
|
|
|
|
RefPtr<nsAtom> eventTypeAtom =
|
|
ShortcutKeys::ConvertEventToDOMEventType(widgetKeyEvent);
|
|
for (KeyEventHandler* handler = keyHandlers; handler;
|
|
handler = handler->GetNextHandler()) {
|
|
if (!handler->EventTypeEquals(eventTypeAtom)) {
|
|
continue;
|
|
}
|
|
|
|
if (!handler->KeyEventMatched(keyEvent, 0, IgnoreModifierState())) {
|
|
continue;
|
|
}
|
|
|
|
// XXX Do we execute only one handler even if the handler neither stops
|
|
// propagation nor prevents default of the event?
|
|
RefPtr<TextControlElement> textControlElement(mTxtCtrlElement);
|
|
nsresult rv = handler->ExecuteHandler(textControlElement, aEvent);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (widgetKeyEvent->mMessage != eKeyPress) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIWidget::NativeKeyBindingsType nativeKeyBindingsType =
|
|
mTxtCtrlElement->IsTextArea()
|
|
? nsIWidget::NativeKeyBindingsForMultiLineEditor
|
|
: nsIWidget::NativeKeyBindingsForSingleLineEditor;
|
|
|
|
nsIWidget* widget = widgetKeyEvent->mWidget;
|
|
// If the event is created by chrome script, the widget is nullptr.
|
|
if (!widget) {
|
|
widget = mFrame->GetNearestWidget();
|
|
if (NS_WARN_IF(!widget)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// WidgetKeyboardEvent::ExecuteEditCommands() requires non-nullptr mWidget.
|
|
// If the event is created by chrome script, it is nullptr but we need to
|
|
// execute native key bindings. Therefore, we need to set widget to
|
|
// WidgetEvent::mWidget temporarily.
|
|
AutoRestore<nsCOMPtr<nsIWidget>> saveWidget(widgetKeyEvent->mWidget);
|
|
widgetKeyEvent->mWidget = widget;
|
|
if (widgetKeyEvent->ExecuteEditCommands(nativeKeyBindingsType,
|
|
DoCommandCallback, mFrame)) {
|
|
aEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult TextInputListener::OnEditActionHandled(TextEditor& aTextEditor) {
|
|
if (mFrame) {
|
|
AutoWeakFrame weakFrame = mFrame;
|
|
|
|
nsITextControlFrame* frameBase = do_QueryFrame(mFrame);
|
|
nsTextControlFrame* frame = static_cast<nsTextControlFrame*>(frameBase);
|
|
NS_ASSERTION(frame, "Where is our frame?");
|
|
//
|
|
// Update the undo / redo menus
|
|
//
|
|
size_t numUndoItems = aTextEditor.NumberOfUndoItems();
|
|
size_t numRedoItems = aTextEditor.NumberOfRedoItems();
|
|
if ((numUndoItems && !mHadUndoItems) || (!numUndoItems && mHadUndoItems) ||
|
|
(numRedoItems && !mHadRedoItems) || (!numRedoItems && mHadRedoItems)) {
|
|
// Modify the menu if undo or redo items are different
|
|
UpdateTextInputCommands(NS_LITERAL_STRING("undo"));
|
|
|
|
mHadUndoItems = numUndoItems != 0;
|
|
mHadRedoItems = numRedoItems != 0;
|
|
}
|
|
|
|
if (weakFrame.IsAlive()) {
|
|
HandleValueChanged(frame);
|
|
}
|
|
}
|
|
|
|
return mTextControlState ? mTextControlState->OnEditActionHandled() : NS_OK;
|
|
}
|
|
|
|
void TextInputListener::HandleValueChanged(nsTextControlFrame* aFrame) {
|
|
// Make sure we know we were changed (do NOT set this to false if there are
|
|
// no undo items; JS could change the value and we'd still need to save it)
|
|
if (mSetValueChanged) {
|
|
if (!aFrame) {
|
|
nsITextControlFrame* frameBase = do_QueryFrame(mFrame);
|
|
aFrame = static_cast<nsTextControlFrame*>(frameBase);
|
|
NS_ASSERTION(aFrame, "Where is our frame?");
|
|
}
|
|
aFrame->SetValueChanged(true);
|
|
}
|
|
|
|
if (!mSettingValue) {
|
|
mTxtCtrlElement->OnValueChanged(/* aNotify = */ true,
|
|
ValueChangeKind::UserInteraction);
|
|
}
|
|
}
|
|
|
|
nsresult TextInputListener::UpdateTextInputCommands(
|
|
const nsAString& aCommandsToUpdate, Selection* aSelection,
|
|
int16_t aReason) {
|
|
nsIContent* content = mFrame->GetContent();
|
|
if (NS_WARN_IF(!content)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsCOMPtr<Document> doc = content->GetComposedDoc();
|
|
if (NS_WARN_IF(!doc)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsPIDOMWindowOuter* domWindow = doc->GetWindow();
|
|
if (NS_WARN_IF(!domWindow)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
domWindow->UpdateCommands(aCommandsToUpdate, aSelection, aReason);
|
|
return NS_OK;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* mozilla::AutoTextControlHandlingState
|
|
*
|
|
* This class is temporarily created in the stack and can manage nested
|
|
* handling state of TextControlState. While this instance exists, lifetime of
|
|
* TextControlState which created the instance is guaranteed. In other words,
|
|
* you can use this class as "kungFuDeathGrip" for TextControlState.
|
|
*****************************************************************************/
|
|
|
|
enum class TextControlAction {
|
|
CacheForReuse,
|
|
CommitComposition,
|
|
Destructor,
|
|
PrepareEditor,
|
|
SetRangeText,
|
|
SetSelectionRange,
|
|
SetValue,
|
|
UnbindFromFrame,
|
|
Unlink,
|
|
};
|
|
|
|
class MOZ_STACK_CLASS AutoTextControlHandlingState {
|
|
public:
|
|
AutoTextControlHandlingState() = delete;
|
|
explicit AutoTextControlHandlingState(const AutoTextControlHandlingState&) =
|
|
delete;
|
|
AutoTextControlHandlingState(AutoTextControlHandlingState&&) = delete;
|
|
void operator=(AutoTextControlHandlingState&) = delete;
|
|
void operator=(const AutoTextControlHandlingState&) = delete;
|
|
|
|
/**
|
|
* Generic constructor. If TextControlAction does not require additional
|
|
* data, must use this constructor.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT AutoTextControlHandlingState(
|
|
TextControlState& aTextControlState, TextControlAction aTextControlAction)
|
|
: mParent(aTextControlState.mHandlingState),
|
|
mTextControlState(aTextControlState),
|
|
mTextCtrlElement(aTextControlState.mTextCtrlElement),
|
|
mTextInputListener(aTextControlState.mTextListener),
|
|
mTextControlAction(aTextControlAction) {
|
|
MOZ_ASSERT(aTextControlAction != TextControlAction::SetValue,
|
|
"Use specific constructor");
|
|
mTextControlState.mHandlingState = this;
|
|
if (Is(TextControlAction::CommitComposition)) {
|
|
MOZ_ASSERT(mParent);
|
|
MOZ_ASSERT(mParent->Is(TextControlAction::SetValue));
|
|
// If we're trying to commit composition before handling SetValue,
|
|
// the parent old values will be outdated so that we need to clear
|
|
// them.
|
|
mParent->InvalidateOldValue();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* TextControlAction::SetValue specific constructor. Current setting value
|
|
* must be specified and the creator should check whether we succeeded to
|
|
* allocate memory for line breaker conversion.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT AutoTextControlHandlingState(
|
|
TextControlState& aTextControlState, TextControlAction aTextControlAction,
|
|
const nsAString& aSettingValue, const nsAString* aOldValue,
|
|
uint32_t aFlags, ErrorResult& aRv)
|
|
: mParent(aTextControlState.mHandlingState),
|
|
mTextControlState(aTextControlState),
|
|
mTextCtrlElement(aTextControlState.mTextCtrlElement),
|
|
mTextInputListener(aTextControlState.mTextListener),
|
|
mSettingValue(aSettingValue),
|
|
mOldValue(aOldValue),
|
|
mSetValueFlags(aFlags),
|
|
mTextControlAction(aTextControlAction) {
|
|
MOZ_ASSERT(aTextControlAction == TextControlAction::SetValue,
|
|
"Use generic constructor");
|
|
mTextControlState.mHandlingState = this;
|
|
if (!nsContentUtils::PlatformToDOMLineBreaks(mSettingValue, fallible)) {
|
|
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
|
|
return;
|
|
}
|
|
// Update all setting value's new value because older value shouldn't
|
|
// overwrite newer value.
|
|
if (mParent) {
|
|
// If SetValue is nested, parents cannot trust their old value anymore.
|
|
// So, we need to clear them.
|
|
mParent->UpdateSettingValueAndInvalidateOldValue(mSettingValue);
|
|
}
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT ~AutoTextControlHandlingState() {
|
|
mTextControlState.mHandlingState = mParent;
|
|
if (!mParent && mTextControlStateDestroyed) {
|
|
mTextControlState.DeleteOrCacheForReuse();
|
|
}
|
|
if (!mTextControlStateDestroyed && mPreareEditorLater) {
|
|
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
|
|
mTextControlState.PrepareEditor();
|
|
}
|
|
}
|
|
|
|
void OnDestroyTextControlState() {
|
|
if (IsHandling(TextControlAction::Destructor) ||
|
|
IsHandling(TextControlAction::CacheForReuse)) {
|
|
// Do nothing since mTextContrlState.DeleteOrCacheForReuse() has
|
|
// already been called.
|
|
return;
|
|
}
|
|
mTextControlStateDestroyed = true;
|
|
if (mParent) {
|
|
mParent->OnDestroyTextControlState();
|
|
}
|
|
}
|
|
|
|
void PrepareEditorLater() {
|
|
MOZ_ASSERT(IsHandling(TextControlAction::SetValue));
|
|
MOZ_ASSERT(!IsHandling(TextControlAction::PrepareEditor));
|
|
// Look for the top most SetValue.
|
|
AutoTextControlHandlingState* settingValue = nullptr;
|
|
for (AutoTextControlHandlingState* handlingSomething = this;
|
|
handlingSomething; handlingSomething = handlingSomething->mParent) {
|
|
if (handlingSomething->Is(TextControlAction::SetValue)) {
|
|
settingValue = handlingSomething;
|
|
}
|
|
}
|
|
settingValue->mPreareEditorLater = true;
|
|
}
|
|
|
|
/**
|
|
* WillSetValueWithTextEditor() is called when TextControlState sets
|
|
* value with its mTextEditor.
|
|
*/
|
|
void WillSetValueWithTextEditor() {
|
|
MOZ_ASSERT(Is(TextControlAction::SetValue));
|
|
MOZ_ASSERT(mTextControlState.mBoundFrame);
|
|
mTextControlFrame = mTextControlState.mBoundFrame;
|
|
// If we'reemulating user input, we don't need to manage mTextInputListener
|
|
// by ourselves since everything should be handled by TextEditor as normal
|
|
// user input.
|
|
if (mSetValueFlags & TextControlState::eSetValue_BySetUserInput) {
|
|
return;
|
|
}
|
|
// Otherwise, if we're setting the value programatically, we need to manage
|
|
// mTextInputListener by ourselves since TextEditor users special path
|
|
// for the performance.
|
|
mTextInputListener->SettingValue(true);
|
|
mTextInputListener->SetValueChanged(mSetValueFlags &
|
|
TextControlState::eSetValue_Notify);
|
|
mEditActionHandled = false;
|
|
// Even if falling back to `TextControlState::SetValueWithoutTextEditor()`
|
|
// due to editor destruction, it shouldn't dispatch "beforeinput" event
|
|
// anymore. Therefore, we should mark that we've already dispatched
|
|
// "beforeinput" event.
|
|
WillDispatchBeforeInputEvent();
|
|
}
|
|
|
|
/**
|
|
* WillDispatchBeforeInputEvent() is called immediately before dispatching
|
|
* "beforeinput" event in `TextControlState`.
|
|
*/
|
|
void WillDispatchBeforeInputEvent() {
|
|
mBeforeInputEventHasBeenDispatched = true;
|
|
}
|
|
|
|
/**
|
|
* OnEditActionHandled() is called when the TextEditor handles something
|
|
* and immediately before dispatching "input" event.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT MOZ_MUST_USE nsresult OnEditActionHandled() {
|
|
MOZ_ASSERT(!mEditActionHandled);
|
|
mEditActionHandled = true;
|
|
if (!Is(TextControlAction::SetValue)) {
|
|
return NS_OK;
|
|
}
|
|
if (!(mSetValueFlags & TextControlState::eSetValue_BySetUserInput)) {
|
|
mTextInputListener->SetValueChanged(true);
|
|
mTextInputListener->SettingValue(
|
|
mParent && mParent->IsHandling(TextControlAction::SetValue));
|
|
if (!(mSetValueFlags & TextControlState::eSetValue_Notify)) {
|
|
// Listener doesn't update frame, but it is required for
|
|
// placeholder
|
|
mTextControlState.ValueWasChanged(true);
|
|
}
|
|
}
|
|
if (!IsOriginalTextControlFrameAlive()) {
|
|
return SetValueWithoutTextEditorAgain() ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
// The new value never includes line breaks caused by hard-wrap.
|
|
// So, mCachedValue can always cache the new value.
|
|
nsITextControlFrame* textControlFrame =
|
|
do_QueryFrame(mTextControlFrame.GetFrame());
|
|
return static_cast<nsTextControlFrame*>(textControlFrame)
|
|
->CacheValue(mSettingValue, fallible)
|
|
? NS_OK
|
|
: NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
/**
|
|
* SetValueWithoutTextEditorAgain() should be called if the frame for
|
|
* mTextControlState was destroyed during setting value.
|
|
*/
|
|
MOZ_CAN_RUN_SCRIPT MOZ_MUST_USE bool SetValueWithoutTextEditorAgain() {
|
|
MOZ_ASSERT(!IsOriginalTextControlFrameAlive());
|
|
// If the frame was destroyed because of a flush somewhere inside
|
|
// TextEditor, mBoundFrame here will be nullptr. But it's also
|
|
// possible for the frame to go away because of another reason (such
|
|
// as deleting the existing selection -- see bug 574558), in which
|
|
// case we don't need to reset the value here.
|
|
if (mTextControlState.mBoundFrame) {
|
|
return true;
|
|
}
|
|
// XXX It's odd to drop flags except eSetValue_Notify. Probably, this
|
|
// intended to drop eSetValue_BySetUserInput and eSetValue_ByContent,
|
|
// but other flags are added later.
|
|
ErrorResult error;
|
|
AutoTextControlHandlingState handlingSetValueWithoutEditor(
|
|
mTextControlState, TextControlAction::SetValue, mSettingValue,
|
|
mOldValue, mSetValueFlags & TextControlState::eSetValue_Notify, error);
|
|
if (error.Failed()) {
|
|
MOZ_ASSERT(error.ErrorCodeIs(NS_ERROR_OUT_OF_MEMORY));
|
|
error.SuppressException();
|
|
return false;
|
|
}
|
|
return mTextControlState.SetValueWithoutTextEditor(
|
|
handlingSetValueWithoutEditor);
|
|
}
|
|
|
|
bool IsTextControlStateDestroyed() const {
|
|
return mTextControlStateDestroyed;
|
|
}
|
|
bool IsOriginalTextControlFrameAlive() const {
|
|
return const_cast<AutoTextControlHandlingState*>(this)
|
|
->mTextControlFrame.IsAlive();
|
|
}
|
|
bool HasEditActionHandled() const { return mEditActionHandled; }
|
|
bool HasBeforeInputEventDispatched() const {
|
|
return mBeforeInputEventHasBeenDispatched;
|
|
}
|
|
bool Is(TextControlAction aTextControlAction) const {
|
|
return mTextControlAction == aTextControlAction;
|
|
}
|
|
bool IsHandling(TextControlAction aTextControlAction) const {
|
|
if (mTextControlAction == aTextControlAction) {
|
|
return true;
|
|
}
|
|
return mParent ? mParent->IsHandling(aTextControlAction) : false;
|
|
}
|
|
TextControlElement* GetTextControlElement() const { return mTextCtrlElement; }
|
|
TextInputListener* GetTextInputListener() const { return mTextInputListener; }
|
|
uint32_t GetSetValueFlags() const {
|
|
MOZ_ASSERT(Is(TextControlAction::SetValue));
|
|
return mSetValueFlags;
|
|
}
|
|
const nsAString* GetOldValue() const {
|
|
MOZ_ASSERT(Is(TextControlAction::SetValue));
|
|
return mOldValue;
|
|
}
|
|
const nsString& GetSettingValue() const {
|
|
MOZ_ASSERT(IsHandling(TextControlAction::SetValue));
|
|
if (mTextControlAction == TextControlAction::SetValue) {
|
|
return mSettingValue;
|
|
}
|
|
return mParent->GetSettingValue();
|
|
}
|
|
|
|
private:
|
|
void UpdateSettingValueAndInvalidateOldValue(const nsString& aSettingValue) {
|
|
if (mTextControlAction == TextControlAction::SetValue) {
|
|
mSettingValue = aSettingValue;
|
|
}
|
|
mOldValue = nullptr;
|
|
if (mParent) {
|
|
mParent->UpdateSettingValueAndInvalidateOldValue(aSettingValue);
|
|
}
|
|
}
|
|
void InvalidateOldValue() {
|
|
mOldValue = nullptr;
|
|
if (mParent) {
|
|
mParent->InvalidateOldValue();
|
|
}
|
|
}
|
|
|
|
AutoTextControlHandlingState* const mParent;
|
|
TextControlState& mTextControlState;
|
|
// mTextControlFrame should be set immediately before calling methods
|
|
// which may destroy the frame. Then, you can check whether the frame
|
|
// was destroyed/replaced.
|
|
AutoWeakFrame mTextControlFrame;
|
|
// mTextCtrlElement grabs TextControlState::mTextCtrlElement since
|
|
// if the text control element releases mTextControlState, only this
|
|
// can guarantee the instance of the text control element.
|
|
RefPtr<TextControlElement> const mTextCtrlElement;
|
|
// mTextInputListener grabs TextControlState::mTextListener because if
|
|
// TextControlState is unbind from the frame, it's released.
|
|
RefPtr<TextInputListener> const mTextInputListener;
|
|
nsString mSettingValue;
|
|
const nsAString* mOldValue = nullptr;
|
|
uint32_t mSetValueFlags = 0;
|
|
TextControlAction const mTextControlAction;
|
|
bool mTextControlStateDestroyed = false;
|
|
bool mEditActionHandled = false;
|
|
bool mPreareEditorLater = false;
|
|
bool mBeforeInputEventHasBeenDispatched = false;
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* mozilla::TextControlState
|
|
*****************************************************************************/
|
|
|
|
AutoTArray<TextControlState*, TextControlState::kMaxCountOfCacheToReuse>*
|
|
TextControlState::sReleasedInstances = nullptr;
|
|
bool TextControlState::sHasShutDown = false;
|
|
|
|
TextControlState::TextControlState(TextControlElement* aOwningElement)
|
|
: mTextCtrlElement(aOwningElement),
|
|
mBoundFrame(nullptr),
|
|
mEverInited(false),
|
|
mEditorInitialized(false),
|
|
mValueTransferInProgress(false),
|
|
mSelectionCached(true),
|
|
mSelectionRestoreEagerInit(false),
|
|
mPlaceholderVisibility(false),
|
|
mPreviewVisibility(false)
|
|
// When adding more member variable initializations here, add the same
|
|
// also to ::Construct.
|
|
{
|
|
MOZ_COUNT_CTOR(TextControlState);
|
|
static_assert(sizeof(*this) <= 128,
|
|
"Please keep small TextControlState as far as possible");
|
|
}
|
|
|
|
TextControlState* TextControlState::Construct(
|
|
TextControlElement* aOwningElement) {
|
|
if (sReleasedInstances && !sReleasedInstances->IsEmpty()) {
|
|
TextControlState* state = sReleasedInstances->LastElement();
|
|
sReleasedInstances->RemoveLastElement();
|
|
state->mTextCtrlElement = aOwningElement;
|
|
state->mBoundFrame = nullptr;
|
|
state->mSelectionProperties = SelectionProperties();
|
|
state->mEverInited = false;
|
|
state->mEditorInitialized = false;
|
|
state->mValueTransferInProgress = false;
|
|
state->mSelectionCached = true;
|
|
state->mSelectionRestoreEagerInit = false;
|
|
state->mPlaceholderVisibility = false;
|
|
state->mPreviewVisibility = false;
|
|
// When adding more member variable initializations here, add the same
|
|
// also to the constructor.
|
|
return state;
|
|
}
|
|
|
|
return new TextControlState(aOwningElement);
|
|
}
|
|
|
|
TextControlState::~TextControlState() {
|
|
MOZ_ASSERT(!mHandlingState);
|
|
MOZ_COUNT_DTOR(TextControlState);
|
|
AutoTextControlHandlingState handlingDesctructor(
|
|
*this, TextControlAction::Destructor);
|
|
Clear();
|
|
}
|
|
|
|
void TextControlState::Shutdown() {
|
|
sHasShutDown = true;
|
|
if (sReleasedInstances) {
|
|
for (TextControlState* textControlState : *sReleasedInstances) {
|
|
textControlState->DeleteOrCacheForReuse();
|
|
}
|
|
delete sReleasedInstances;
|
|
}
|
|
}
|
|
|
|
void TextControlState::Destroy() {
|
|
// If we're handling something, we should be deleted later.
|
|
if (mHandlingState) {
|
|
mHandlingState->OnDestroyTextControlState();
|
|
return;
|
|
}
|
|
DeleteOrCacheForReuse();
|
|
// Note that this instance may have already been deleted here. Don't touch
|
|
// any members.
|
|
}
|
|
|
|
void TextControlState::DeleteOrCacheForReuse() {
|
|
MOZ_ASSERT(!IsBusy());
|
|
|
|
// If we can cache this instance, we should do it instead of deleting it.
|
|
if (!sHasShutDown && (!sReleasedInstances || sReleasedInstances->Length() <
|
|
kMaxCountOfCacheToReuse)) {
|
|
AutoTextControlHandlingState handlingCacheForReuse(
|
|
*this, TextControlAction::CacheForReuse);
|
|
|
|
// Prepare for reuse, unlink and release any refcountable objects.
|
|
UnlinkInternal();
|
|
mValue.reset();
|
|
mTextCtrlElement = nullptr;
|
|
|
|
// Put this instance to the cache. Note that now, the array may be full,
|
|
// but it's not problem to cache more instances than kMaxCountOfCacheToReuse
|
|
// because it just requires reallocation cost of the array buffer.
|
|
if (!sReleasedInstances) {
|
|
sReleasedInstances =
|
|
new AutoTArray<TextControlState*, kMaxCountOfCacheToReuse>;
|
|
}
|
|
sReleasedInstances->AppendElement(this);
|
|
|
|
return;
|
|
}
|
|
delete this;
|
|
}
|
|
|
|
nsresult TextControlState::OnEditActionHandled() {
|
|
return mHandlingState ? mHandlingState->OnEditActionHandled() : NS_OK;
|
|
}
|
|
|
|
Element* TextControlState::GetRootNode() {
|
|
return mBoundFrame ? mBoundFrame->GetRootNode() : nullptr;
|
|
}
|
|
|
|
Element* TextControlState::GetPreviewNode() {
|
|
return mBoundFrame ? mBoundFrame->GetPreviewNode() : nullptr;
|
|
}
|
|
|
|
void TextControlState::Clear() {
|
|
MOZ_ASSERT(mHandlingState);
|
|
MOZ_ASSERT(mHandlingState->Is(TextControlAction::Destructor) ||
|
|
mHandlingState->Is(TextControlAction::CacheForReuse) ||
|
|
mHandlingState->Is(TextControlAction::Unlink));
|
|
if (mTextEditor) {
|
|
mTextEditor->SetTextInputListener(nullptr);
|
|
}
|
|
|
|
if (mBoundFrame) {
|
|
// Oops, we still have a frame!
|
|
// This should happen when the type of a text input control is being changed
|
|
// to something which is not a text control. In this case, we should
|
|
// pretend that a frame is being destroyed, and clean up after ourselves
|
|
// properly.
|
|
UnbindFromFrame(mBoundFrame);
|
|
mTextEditor = nullptr;
|
|
} else {
|
|
// If we have a bound frame around, UnbindFromFrame will call DestroyEditor
|
|
// for us.
|
|
DestroyEditor();
|
|
}
|
|
mTextListener = nullptr;
|
|
}
|
|
|
|
void TextControlState::Unlink() {
|
|
AutoTextControlHandlingState handlingUnlink(*this, TextControlAction::Unlink);
|
|
UnlinkInternal();
|
|
}
|
|
|
|
void TextControlState::UnlinkInternal() {
|
|
MOZ_ASSERT(mHandlingState);
|
|
MOZ_ASSERT(mHandlingState->Is(TextControlAction::Unlink) ||
|
|
mHandlingState->Is(TextControlAction::CacheForReuse));
|
|
TextControlState* tmp = this;
|
|
tmp->Clear();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSelCon)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mTextEditor)
|
|
}
|
|
|
|
void TextControlState::Traverse(nsCycleCollectionTraversalCallback& cb) {
|
|
TextControlState* tmp = this;
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSelCon)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTextEditor)
|
|
}
|
|
|
|
nsFrameSelection* TextControlState::GetConstFrameSelection() {
|
|
return mSelCon ? mSelCon->GetConstFrameSelection() : nullptr;
|
|
}
|
|
|
|
TextEditor* TextControlState::GetTextEditor() {
|
|
// Note that if the instance is destroyed in PrepareEditor(), it returns
|
|
// NS_ERROR_NOT_INITIALIZED so that we don't need to create kungFuDeathGrip
|
|
// in this hot path.
|
|
if (!mTextEditor && NS_WARN_IF(NS_FAILED(PrepareEditor()))) {
|
|
return nullptr;
|
|
}
|
|
return mTextEditor;
|
|
}
|
|
|
|
TextEditor* TextControlState::GetTextEditorWithoutCreation() {
|
|
return mTextEditor;
|
|
}
|
|
|
|
nsISelectionController* TextControlState::GetSelectionController() const {
|
|
return mSelCon;
|
|
}
|
|
|
|
// Helper class, used below in BindToFrame().
|
|
class PrepareEditorEvent : public Runnable {
|
|
public:
|
|
PrepareEditorEvent(TextControlState& aState, nsIContent* aOwnerContent,
|
|
const nsAString& aCurrentValue)
|
|
: Runnable("PrepareEditorEvent"),
|
|
mState(&aState),
|
|
mOwnerContent(aOwnerContent),
|
|
mCurrentValue(aCurrentValue) {
|
|
aState.mValueTransferInProgress = true;
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
|
|
if (NS_WARN_IF(!mState)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
// Transfer the saved value to the editor if we have one
|
|
const nsAString* value = nullptr;
|
|
if (!mCurrentValue.IsEmpty()) {
|
|
value = &mCurrentValue;
|
|
}
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
mState->PrepareEditor(value);
|
|
|
|
mState->mValueTransferInProgress = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
WeakPtr<TextControlState> mState;
|
|
nsCOMPtr<nsIContent> mOwnerContent; // strong reference
|
|
nsAutoString mCurrentValue;
|
|
};
|
|
|
|
nsresult TextControlState::BindToFrame(nsTextControlFrame* aFrame) {
|
|
MOZ_ASSERT(
|
|
!nsContentUtils::IsSafeToRunScript(),
|
|
"TextControlState::BindToFrame() has to be called with script blocker");
|
|
NS_ASSERTION(aFrame, "The frame to bind to should be valid");
|
|
if (!aFrame) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
NS_ASSERTION(!mBoundFrame, "Cannot bind twice, need to unbind first");
|
|
if (mBoundFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If we'll need to transfer our current value to the editor, save it before
|
|
// binding to the frame.
|
|
nsAutoString currentValue;
|
|
if (mTextEditor) {
|
|
GetValue(currentValue, true);
|
|
}
|
|
|
|
mBoundFrame = aFrame;
|
|
|
|
Element* rootNode = aFrame->GetRootNode();
|
|
MOZ_ASSERT(rootNode);
|
|
|
|
PresShell* presShell = aFrame->PresContext()->GetPresShell();
|
|
MOZ_ASSERT(presShell);
|
|
|
|
// Create selection
|
|
RefPtr<nsFrameSelection> frameSel = new nsFrameSelection();
|
|
|
|
// Create a SelectionController
|
|
mSelCon = new TextInputSelectionController(frameSel, presShell, rootNode);
|
|
MOZ_ASSERT(!mTextListener, "Should not overwrite the object");
|
|
mTextListener = new TextInputListener(mTextCtrlElement);
|
|
|
|
mTextListener->SetFrame(mBoundFrame);
|
|
mSelCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
|
|
|
|
// Get the caret and make it a selection listener.
|
|
// FYI: It's safe to use raw pointer for calling
|
|
// Selection::AddSelectionListner() because it only appends the listener
|
|
// to its internal array.
|
|
Selection* selection = mSelCon->GetSelection(SelectionType::eNormal);
|
|
if (selection) {
|
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
|
if (caret) {
|
|
selection->AddSelectionListener(caret);
|
|
}
|
|
mTextListener->StartToListenToSelectionChange();
|
|
}
|
|
|
|
// If an editor exists from before, prepare it for usage
|
|
if (mTextEditor) {
|
|
if (NS_WARN_IF(!mTextCtrlElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Set the correct direction on the newly created root node
|
|
if (mTextEditor->IsRightToLeft()) {
|
|
rootNode->SetAttr(kNameSpaceID_None, nsGkAtoms::dir,
|
|
NS_LITERAL_STRING("rtl"), false);
|
|
} else if (mTextEditor->IsLeftToRight()) {
|
|
rootNode->SetAttr(kNameSpaceID_None, nsGkAtoms::dir,
|
|
NS_LITERAL_STRING("ltr"), false);
|
|
} else {
|
|
// otherwise, inherit the content node's direction
|
|
}
|
|
|
|
nsContentUtils::AddScriptRunner(
|
|
new PrepareEditorEvent(*this, mTextCtrlElement, currentValue));
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
struct MOZ_STACK_CLASS PreDestroyer {
|
|
void Init(TextEditor* aTextEditor) { mTextEditor = aTextEditor; }
|
|
MOZ_CAN_RUN_SCRIPT ~PreDestroyer() {
|
|
if (mTextEditor) {
|
|
MOZ_KnownLive(mTextEditor)->PreDestroy(true);
|
|
}
|
|
}
|
|
void Swap(RefPtr<TextEditor>& aTextEditor) {
|
|
return mTextEditor.swap(aTextEditor);
|
|
}
|
|
|
|
private:
|
|
RefPtr<TextEditor> mTextEditor;
|
|
};
|
|
|
|
nsresult TextControlState::PrepareEditor(const nsAString* aValue) {
|
|
if (!mBoundFrame) {
|
|
// Cannot create an editor without a bound frame.
|
|
// Don't return a failure code, because js callers can't handle that.
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mEditorInitialized) {
|
|
// Do not initialize the editor multiple times.
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoHideSelectionChanges hideSelectionChanges(GetConstFrameSelection());
|
|
|
|
if (mHandlingState) {
|
|
// Don't attempt to initialize recursively!
|
|
if (mHandlingState->IsHandling(TextControlAction::PrepareEditor)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
// Reschedule creating editor later if we're setting value.
|
|
if (mHandlingState->IsHandling(TextControlAction::SetValue)) {
|
|
mHandlingState->PrepareEditorLater();
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(mTextCtrlElement);
|
|
|
|
AutoTextControlHandlingState preparingEditor(
|
|
*this, TextControlAction::PrepareEditor);
|
|
|
|
// Note that we don't check mTextEditor here, because we might already have
|
|
// one around, in which case we don't create a new one, and we'll just tie
|
|
// the required machinery to it.
|
|
|
|
nsPresContext* presContext = mBoundFrame->PresContext();
|
|
PresShell* presShell = presContext->GetPresShell();
|
|
|
|
// Setup the editor flags
|
|
uint32_t editorFlags = nsIEditor::eEditorPlaintextMask;
|
|
if (IsSingleLineTextControl()) {
|
|
editorFlags |= nsIEditor::eEditorSingleLineMask;
|
|
}
|
|
if (IsPasswordTextControl()) {
|
|
editorFlags |= nsIEditor::eEditorPasswordMask;
|
|
}
|
|
|
|
// All nsTextControlFrames are widgets
|
|
editorFlags |= nsIEditor::eEditorWidgetMask;
|
|
|
|
// Spell check is diabled at creation time. It is enabled once
|
|
// the editor comes into focus.
|
|
editorFlags |= nsIEditor::eEditorSkipSpellCheck;
|
|
|
|
bool shouldInitializeEditor = false;
|
|
RefPtr<TextEditor> newTextEditor; // the editor that we might create
|
|
nsresult rv = NS_OK;
|
|
PreDestroyer preDestroyer;
|
|
if (!mTextEditor) {
|
|
shouldInitializeEditor = true;
|
|
|
|
// Create an editor
|
|
newTextEditor = new TextEditor();
|
|
preDestroyer.Init(newTextEditor);
|
|
|
|
// Make sure we clear out the non-breaking space before we initialize the
|
|
// editor
|
|
rv = mBoundFrame->UpdateValueDisplay(true, true);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("nsTextControlFrame::UpdateValueDisplay() failed");
|
|
return rv;
|
|
}
|
|
} else {
|
|
if (aValue || !mEditorInitialized) {
|
|
// Set the correct value in the root node
|
|
rv = mBoundFrame->UpdateValueDisplay(true, !mEditorInitialized, aValue);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("nsTextControlFrame::UpdateValueDisplay() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
newTextEditor = mTextEditor; // just pretend that we have a new editor!
|
|
|
|
// Don't lose application flags in the process.
|
|
if (newTextEditor->IsMailEditor()) {
|
|
editorFlags |= nsIEditor::eEditorMailMask;
|
|
}
|
|
}
|
|
|
|
// Get the current value of the textfield from the content.
|
|
// Note that if we've created a new editor, mTextEditor is null at this stage,
|
|
// so we will get the real value from the content.
|
|
nsAutoString defaultValue;
|
|
if (aValue) {
|
|
defaultValue = *aValue;
|
|
} else {
|
|
GetValue(defaultValue, true);
|
|
}
|
|
|
|
if (!mEditorInitialized) {
|
|
// Now initialize the editor.
|
|
//
|
|
// NOTE: Conversion of '\n' to <BR> happens inside the
|
|
// editor's Init() call.
|
|
|
|
// Get the DOM document
|
|
nsCOMPtr<Document> doc = presShell->GetDocument();
|
|
if (NS_WARN_IF(!doc)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// What follows is a bit of a hack. The editor uses the public DOM APIs
|
|
// for its content manipulations, and it causes it to fail some security
|
|
// checks deep inside when initializing. So we explictly make it clear that
|
|
// we're native code.
|
|
// Note that any script that's directly trying to access our value
|
|
// has to be going through some scriptable object to do that and that
|
|
// already does the relevant security checks.
|
|
AutoNoJSAPI nojsapi;
|
|
|
|
RefPtr<Element> rootElement = GetRootNode();
|
|
RefPtr<TextInputSelectionController> selectionController = mSelCon;
|
|
rv = newTextEditor->Init(*doc, rootElement, selectionController,
|
|
editorFlags, defaultValue);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("TextEditor::Init() failed");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Initialize the controller for the editor
|
|
|
|
if (!SuppressEventHandlers(presContext)) {
|
|
nsCOMPtr<nsIControllers> controllers;
|
|
if (HTMLInputElement* inputElement =
|
|
HTMLInputElement::FromNodeOrNull(mTextCtrlElement)) {
|
|
rv = inputElement->GetControllers(getter_AddRefs(controllers));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
} else {
|
|
HTMLTextAreaElement* textAreaElement =
|
|
HTMLTextAreaElement::FromNodeOrNull(mTextCtrlElement);
|
|
if (!textAreaElement) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
rv = textAreaElement->GetControllers(getter_AddRefs(controllers));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (controllers) {
|
|
uint32_t numControllers;
|
|
bool found = false;
|
|
rv = controllers->GetControllerCount(&numControllers);
|
|
for (uint32_t i = 0; i < numControllers; i++) {
|
|
nsCOMPtr<nsIController> controller;
|
|
rv = controllers->GetControllerAt(i, getter_AddRefs(controller));
|
|
if (NS_SUCCEEDED(rv) && controller) {
|
|
nsCOMPtr<nsIControllerContext> editController =
|
|
do_QueryInterface(controller);
|
|
if (editController) {
|
|
editController->SetCommandContext(
|
|
static_cast<nsIEditor*>(newTextEditor));
|
|
found = true;
|
|
}
|
|
}
|
|
}
|
|
if (!found) {
|
|
rv = NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Initialize the plaintext editor
|
|
if (shouldInitializeEditor) {
|
|
const int32_t wrapCols = GetWrapCols();
|
|
MOZ_ASSERT(wrapCols >= 0);
|
|
newTextEditor->SetWrapColumn(wrapCols);
|
|
}
|
|
|
|
// Set max text field length
|
|
newTextEditor->SetMaxTextLength(mTextCtrlElement->UsedMaxLength());
|
|
|
|
editorFlags = newTextEditor->Flags();
|
|
|
|
// Check if the readonly attribute is set.
|
|
if (mTextCtrlElement->HasAttr(kNameSpaceID_None, nsGkAtoms::readonly)) {
|
|
editorFlags |= nsIEditor::eEditorReadonlyMask;
|
|
}
|
|
|
|
// Check if the disabled attribute is set.
|
|
// TODO: call IsDisabled() here!
|
|
if (mTextCtrlElement->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
|
|
editorFlags |= nsIEditor::eEditorDisabledMask;
|
|
}
|
|
|
|
// Disable the selection if necessary.
|
|
if (newTextEditor->IsDisabled()) {
|
|
mSelCon->SetDisplaySelection(nsISelectionController::SELECTION_OFF);
|
|
}
|
|
|
|
SetEditorFlagsIfNecessary(*newTextEditor, editorFlags);
|
|
|
|
if (shouldInitializeEditor) {
|
|
// Hold on to the newly created editor
|
|
preDestroyer.Swap(mTextEditor);
|
|
}
|
|
|
|
// If we have a default value, insert it under the div we created
|
|
// above, but be sure to use the editor so that '*' characters get
|
|
// displayed for password fields, etc. SetValue() will call the
|
|
// editor for us.
|
|
|
|
if (!defaultValue.IsEmpty()) {
|
|
// XXX rv may store error code which indicates there is no controller.
|
|
// However, we overwrite it only in this case.
|
|
rv = SetEditorFlagsIfNecessary(*newTextEditor, editorFlags);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
// Now call SetValue() which will make the necessary editor calls to set
|
|
// the default value. Make sure to turn off undo before setting the default
|
|
// value, and turn it back on afterwards. This will make sure we can't undo
|
|
// past the default value.
|
|
// So, we use eSetValue_Internal flag only that it will turn off undo.
|
|
|
|
if (NS_WARN_IF(!SetValue(defaultValue, eSetValue_Internal))) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Now restore the original editor flags.
|
|
rv = SetEditorFlagsIfNecessary(*newTextEditor, editorFlags);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (IsPasswordTextControl()) {
|
|
// Disable undo for <input type="password">. Note that we want to do this
|
|
// at the very end of InitEditor(), so the calls to EnableUndoRedo() when
|
|
// setting the default value don't screw us up. Since changing the
|
|
// control type does a reframe, we don't have to worry about dynamic type
|
|
// changes here.
|
|
DebugOnly<bool> disabledUndoRedo = newTextEditor->DisableUndoRedo();
|
|
NS_WARNING_ASSERTION(disabledUndoRedo,
|
|
"Failed to disable undo/redo transaction");
|
|
} else {
|
|
DebugOnly<bool> enabledUndoRedo =
|
|
newTextEditor->EnableUndoRedo(TextControlElement::DEFAULT_UNDO_CAP);
|
|
NS_WARNING_ASSERTION(enabledUndoRedo,
|
|
"Failed to enable undo/redo transaction");
|
|
}
|
|
|
|
if (!mEditorInitialized) {
|
|
newTextEditor->PostCreate();
|
|
mEverInited = true;
|
|
mEditorInitialized = true;
|
|
}
|
|
|
|
if (mTextListener) {
|
|
newTextEditor->SetTextInputListener(mTextListener);
|
|
}
|
|
|
|
// Restore our selection after being bound to a new frame
|
|
if (mSelectionCached) {
|
|
if (mRestoringSelection) { // paranoia
|
|
mRestoringSelection->Revoke();
|
|
}
|
|
mRestoringSelection = new RestoreSelectionState(this, mBoundFrame);
|
|
if (mRestoringSelection) {
|
|
nsContentUtils::AddScriptRunner(mRestoringSelection);
|
|
}
|
|
}
|
|
|
|
// The selection cache is no longer going to be valid.
|
|
//
|
|
// XXXbz Shouldn't we do this at the point when we're actually about to
|
|
// restore the properties or something? As things stand, if UnbindFromFrame
|
|
// happens before our RestoreSelectionState runs, it looks like we'll lose our
|
|
// selection info, because we will think we don't have it cached and try to
|
|
// read it from the selection controller, which will not have it yet.
|
|
mSelectionCached = false;
|
|
|
|
return preparingEditor.IsTextControlStateDestroyed()
|
|
? NS_ERROR_NOT_INITIALIZED
|
|
: rv;
|
|
}
|
|
|
|
void TextControlState::FinishedRestoringSelection() {
|
|
mRestoringSelection = nullptr;
|
|
}
|
|
|
|
void TextControlState::SyncUpSelectionPropertiesBeforeDestruction() {
|
|
if (mBoundFrame) {
|
|
UnbindFromFrame(mBoundFrame);
|
|
}
|
|
}
|
|
|
|
void TextControlState::SetSelectionProperties(
|
|
TextControlState::SelectionProperties& aProps) {
|
|
if (mBoundFrame) {
|
|
mBoundFrame->SetSelectionRange(aProps.GetStart(), aProps.GetEnd(),
|
|
aProps.GetDirection());
|
|
// The instance may have already been deleted here.
|
|
} else {
|
|
mSelectionProperties = aProps;
|
|
}
|
|
}
|
|
|
|
void TextControlState::GetSelectionRange(uint32_t* aSelectionStart,
|
|
uint32_t* aSelectionEnd,
|
|
ErrorResult& aRv) {
|
|
MOZ_ASSERT(aSelectionStart);
|
|
MOZ_ASSERT(aSelectionEnd);
|
|
MOZ_ASSERT(IsSelectionCached() || GetSelectionController(),
|
|
"How can we not have a cached selection if we have no selection "
|
|
"controller?");
|
|
|
|
// Note that we may have both IsSelectionCached() _and_
|
|
// GetSelectionController() if we haven't initialized our editor yet.
|
|
if (IsSelectionCached()) {
|
|
const SelectionProperties& props = GetSelectionProperties();
|
|
*aSelectionStart = props.GetStart();
|
|
*aSelectionEnd = props.GetEnd();
|
|
return;
|
|
}
|
|
|
|
Selection* sel = mSelCon->GetSelection(SelectionType::eNormal);
|
|
if (NS_WARN_IF(!sel)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return;
|
|
}
|
|
|
|
Element* root = GetRootNode();
|
|
if (NS_WARN_IF(!root)) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
nsContentUtils::GetSelectionInTextControl(sel, root, *aSelectionStart,
|
|
*aSelectionEnd);
|
|
}
|
|
|
|
nsITextControlFrame::SelectionDirection TextControlState::GetSelectionDirection(
|
|
ErrorResult& aRv) {
|
|
MOZ_ASSERT(IsSelectionCached() || GetSelectionController(),
|
|
"How can we not have a cached selection if we have no selection "
|
|
"controller?");
|
|
|
|
// Note that we may have both IsSelectionCached() _and_
|
|
// GetSelectionController() if we haven't initialized our editor yet.
|
|
if (IsSelectionCached()) {
|
|
return GetSelectionProperties().GetDirection();
|
|
}
|
|
|
|
Selection* sel = mSelCon->GetSelection(SelectionType::eNormal);
|
|
if (NS_WARN_IF(!sel)) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
return nsITextControlFrame::eForward; // Doesn't really matter
|
|
}
|
|
|
|
nsDirection direction = sel->GetDirection();
|
|
if (direction == eDirNext) {
|
|
return nsITextControlFrame::eForward;
|
|
}
|
|
|
|
MOZ_ASSERT(direction == eDirPrevious);
|
|
return nsITextControlFrame::eBackward;
|
|
}
|
|
|
|
void TextControlState::SetSelectionRange(
|
|
uint32_t aStart, uint32_t aEnd,
|
|
nsITextControlFrame::SelectionDirection aDirection, ErrorResult& aRv) {
|
|
MOZ_ASSERT(IsSelectionCached() || mBoundFrame,
|
|
"How can we have a non-cached selection but no frame?");
|
|
|
|
AutoTextControlHandlingState handlingSetSelectionRange(
|
|
*this, TextControlAction::SetSelectionRange);
|
|
|
|
if (aStart > aEnd) {
|
|
aStart = aEnd;
|
|
}
|
|
|
|
bool changed = false;
|
|
nsresult rv = NS_OK; // For the ScrollSelectionIntoView() return value.
|
|
if (IsSelectionCached()) {
|
|
nsAutoString value;
|
|
// XXXbz is "false" the right thing to pass here? Hard to tell, given the
|
|
// various mismatches between our impl and the spec.
|
|
GetValue(value, false);
|
|
uint32_t length = value.Length();
|
|
if (aStart > length) {
|
|
aStart = length;
|
|
}
|
|
if (aEnd > length) {
|
|
aEnd = length;
|
|
}
|
|
SelectionProperties& props = GetSelectionProperties();
|
|
changed = props.GetStart() != aStart || props.GetEnd() != aEnd ||
|
|
props.GetDirection() != aDirection;
|
|
props.SetStart(aStart);
|
|
props.SetEnd(aEnd);
|
|
props.SetDirection(aDirection);
|
|
} else {
|
|
MOZ_ASSERT(mBoundFrame, "Our frame should still be valid");
|
|
aRv = mBoundFrame->SetSelectionRange(aStart, aEnd, aDirection);
|
|
if (aRv.Failed() ||
|
|
handlingSetSelectionRange.IsTextControlStateDestroyed()) {
|
|
return;
|
|
}
|
|
if (mBoundFrame) {
|
|
rv = mBoundFrame->ScrollSelectionIntoView();
|
|
}
|
|
// Press on to firing the event even if that failed, like our old code did.
|
|
// But is that really what we want? Firing the event _and_ throwing from
|
|
// here is weird. Maybe we should just ignore ScrollSelectionIntoView
|
|
// failures?
|
|
|
|
// XXXbz This is preserving our current behavior of firing a "select" event
|
|
// on all mutations when we have an editor, but we should really consider
|
|
// fixing that...
|
|
changed = true;
|
|
}
|
|
|
|
if (changed) {
|
|
// It sure would be nice if we had an existing Element* or so to work with.
|
|
RefPtr<AsyncEventDispatcher> asyncDispatcher =
|
|
new AsyncEventDispatcher(mTextCtrlElement, NS_LITERAL_STRING("select"),
|
|
CanBubble::eYes, ChromeOnlyDispatch::eNo);
|
|
asyncDispatcher->PostDOMEvent();
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
}
|
|
}
|
|
|
|
void TextControlState::SetSelectionStart(const Nullable<uint32_t>& aStart,
|
|
ErrorResult& aRv) {
|
|
uint32_t start = 0;
|
|
if (!aStart.IsNull()) {
|
|
start = aStart.Value();
|
|
}
|
|
|
|
uint32_t ignored, end;
|
|
GetSelectionRange(&ignored, &end, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsITextControlFrame::SelectionDirection dir = GetSelectionDirection(aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
if (end < start) {
|
|
end = start;
|
|
}
|
|
|
|
SetSelectionRange(start, end, dir, aRv);
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
void TextControlState::SetSelectionEnd(const Nullable<uint32_t>& aEnd,
|
|
ErrorResult& aRv) {
|
|
uint32_t end = 0;
|
|
if (!aEnd.IsNull()) {
|
|
end = aEnd.Value();
|
|
}
|
|
|
|
uint32_t start, ignored;
|
|
GetSelectionRange(&start, &ignored, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsITextControlFrame::SelectionDirection dir = GetSelectionDirection(aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
SetSelectionRange(start, end, dir, aRv);
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
static void DirectionToName(nsITextControlFrame::SelectionDirection dir,
|
|
nsAString& aDirection) {
|
|
switch (dir) {
|
|
case nsITextControlFrame::eNone:
|
|
// TODO(mbrodesser): this should be supported, see
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1541454.
|
|
NS_WARNING("We don't actually support this... how did we get it?");
|
|
aDirection.AssignLiteral("none");
|
|
break;
|
|
case nsITextControlFrame::eForward:
|
|
aDirection.AssignLiteral("forward");
|
|
break;
|
|
case nsITextControlFrame::eBackward:
|
|
aDirection.AssignLiteral("backward");
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Invalid SelectionDirection value");
|
|
}
|
|
}
|
|
|
|
void TextControlState::GetSelectionDirectionString(nsAString& aDirection,
|
|
ErrorResult& aRv) {
|
|
nsITextControlFrame::SelectionDirection dir = GetSelectionDirection(aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
DirectionToName(dir, aDirection);
|
|
}
|
|
|
|
static nsITextControlFrame::SelectionDirection
|
|
DirectionStringToSelectionDirection(const nsAString& aDirection) {
|
|
if (aDirection.EqualsLiteral("backward")) {
|
|
return nsITextControlFrame::eBackward;
|
|
}
|
|
|
|
// We don't support directionless selections.
|
|
return nsITextControlFrame::eForward;
|
|
}
|
|
|
|
void TextControlState::SetSelectionDirection(const nsAString& aDirection,
|
|
ErrorResult& aRv) {
|
|
nsITextControlFrame::SelectionDirection dir =
|
|
DirectionStringToSelectionDirection(aDirection);
|
|
|
|
if (IsSelectionCached()) {
|
|
GetSelectionProperties().SetDirection(dir);
|
|
return;
|
|
}
|
|
|
|
uint32_t start, end;
|
|
GetSelectionRange(&start, &end, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
SetSelectionRange(start, end, dir, aRv);
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
static nsITextControlFrame::SelectionDirection
|
|
DirectionStringToSelectionDirection(const Optional<nsAString>& aDirection) {
|
|
if (!aDirection.WasPassed()) {
|
|
// We don't support directionless selections.
|
|
return nsITextControlFrame::eForward;
|
|
}
|
|
|
|
return DirectionStringToSelectionDirection(aDirection.Value());
|
|
}
|
|
|
|
void TextControlState::SetSelectionRange(uint32_t aSelectionStart,
|
|
uint32_t aSelectionEnd,
|
|
const Optional<nsAString>& aDirection,
|
|
ErrorResult& aRv) {
|
|
nsITextControlFrame::SelectionDirection dir =
|
|
DirectionStringToSelectionDirection(aDirection);
|
|
|
|
SetSelectionRange(aSelectionStart, aSelectionEnd, dir, aRv);
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
void TextControlState::SetRangeText(const nsAString& aReplacement,
|
|
ErrorResult& aRv) {
|
|
uint32_t start, end;
|
|
GetSelectionRange(&start, &end, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
SetRangeText(aReplacement, start, end, SelectionMode::Preserve, aRv,
|
|
Some(start), Some(end));
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
void TextControlState::SetRangeText(const nsAString& aReplacement,
|
|
uint32_t aStart, uint32_t aEnd,
|
|
SelectionMode aSelectMode, ErrorResult& aRv,
|
|
const Maybe<uint32_t>& aSelectionStart,
|
|
const Maybe<uint32_t>& aSelectionEnd) {
|
|
if (aStart > aEnd) {
|
|
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
|
|
return;
|
|
}
|
|
|
|
AutoTextControlHandlingState handlingSetRangeText(
|
|
*this, TextControlAction::SetRangeText);
|
|
|
|
nsAutoString value;
|
|
mTextCtrlElement->GetValueFromSetRangeText(value);
|
|
uint32_t inputValueLength = value.Length();
|
|
|
|
if (aStart > inputValueLength) {
|
|
aStart = inputValueLength;
|
|
}
|
|
|
|
if (aEnd > inputValueLength) {
|
|
aEnd = inputValueLength;
|
|
}
|
|
|
|
uint32_t selectionStart, selectionEnd;
|
|
if (!aSelectionStart) {
|
|
MOZ_ASSERT(!aSelectionEnd);
|
|
GetSelectionRange(&selectionStart, &selectionEnd, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(aSelectionEnd);
|
|
selectionStart = *aSelectionStart;
|
|
selectionEnd = *aSelectionEnd;
|
|
}
|
|
|
|
MOZ_ASSERT(aStart <= aEnd);
|
|
value.Replace(aStart, aEnd - aStart, aReplacement);
|
|
nsresult rv =
|
|
MOZ_KnownLive(mTextCtrlElement)->SetValueFromSetRangeText(value);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
|
|
uint32_t newEnd = aStart + aReplacement.Length();
|
|
int32_t delta = aReplacement.Length() - (aEnd - aStart);
|
|
|
|
switch (aSelectMode) {
|
|
case SelectionMode::Select:
|
|
selectionStart = aStart;
|
|
selectionEnd = newEnd;
|
|
break;
|
|
case SelectionMode::Start:
|
|
selectionStart = selectionEnd = aStart;
|
|
break;
|
|
case SelectionMode::End:
|
|
selectionStart = selectionEnd = newEnd;
|
|
break;
|
|
case SelectionMode::Preserve:
|
|
if (selectionStart > aEnd) {
|
|
selectionStart += delta;
|
|
} else if (selectionStart > aStart) {
|
|
selectionStart = aStart;
|
|
}
|
|
|
|
if (selectionEnd > aEnd) {
|
|
selectionEnd += delta;
|
|
} else if (selectionEnd > aStart) {
|
|
selectionEnd = newEnd;
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown mode!");
|
|
}
|
|
|
|
SetSelectionRange(selectionStart, selectionEnd, Optional<nsAString>(), aRv);
|
|
// The instance may have already been deleted here.
|
|
}
|
|
|
|
void TextControlState::DestroyEditor() {
|
|
// notify the editor that we are going away
|
|
if (mEditorInitialized) {
|
|
// FYI: TextEditor checks whether it's destroyed or not immediately after
|
|
// changes the DOM tree or selection so that it's safe to call
|
|
// PreDestroy() here even while we're handling actions with
|
|
// mTextEditor.
|
|
RefPtr<TextEditor> textEditor = mTextEditor;
|
|
textEditor->PreDestroy(true);
|
|
mEditorInitialized = false;
|
|
}
|
|
}
|
|
|
|
void TextControlState::UnbindFromFrame(nsTextControlFrame* aFrame) {
|
|
if (NS_WARN_IF(!mBoundFrame)) {
|
|
return;
|
|
}
|
|
|
|
// If it was, however, it should be unbounded from the same frame.
|
|
MOZ_ASSERT(aFrame == mBoundFrame, "Unbinding from the wrong frame");
|
|
if (aFrame && aFrame != mBoundFrame) {
|
|
return;
|
|
}
|
|
|
|
AutoTextControlHandlingState handlingUnbindFromFrame(
|
|
*this, TextControlAction::UnbindFromFrame);
|
|
|
|
// We need to start storing the value outside of the editor if we're not
|
|
// going to use it anymore, so retrieve it for now.
|
|
nsAutoString value;
|
|
GetValue(value, true);
|
|
|
|
if (mRestoringSelection) {
|
|
mRestoringSelection->Revoke();
|
|
mRestoringSelection = nullptr;
|
|
}
|
|
|
|
// Save our selection state if needed.
|
|
// Note that GetSelectionRange will attempt to work with our selection
|
|
// controller, so we should make sure we do it before we start doing things
|
|
// like destroying our editor (if we have one), tearing down the selection
|
|
// controller, and so forth.
|
|
if (!IsSelectionCached()) {
|
|
// Go ahead and cache it now.
|
|
uint32_t start = 0, end = 0;
|
|
GetSelectionRange(&start, &end, IgnoreErrors());
|
|
|
|
nsITextControlFrame::SelectionDirection direction =
|
|
GetSelectionDirection(IgnoreErrors());
|
|
|
|
SelectionProperties& props = GetSelectionProperties();
|
|
props.SetStart(start);
|
|
props.SetEnd(end);
|
|
props.SetDirection(direction);
|
|
mSelectionCached = true;
|
|
}
|
|
|
|
// Destroy our editor
|
|
DestroyEditor();
|
|
|
|
// Clean up the controller
|
|
if (!SuppressEventHandlers(mBoundFrame->PresContext())) {
|
|
nsCOMPtr<nsIControllers> controllers;
|
|
if (HTMLInputElement* inputElement =
|
|
HTMLInputElement::FromNodeOrNull(mTextCtrlElement)) {
|
|
inputElement->GetControllers(getter_AddRefs(controllers));
|
|
} else {
|
|
HTMLTextAreaElement* textAreaElement =
|
|
HTMLTextAreaElement::FromNodeOrNull(mTextCtrlElement);
|
|
if (textAreaElement) {
|
|
textAreaElement->GetControllers(getter_AddRefs(controllers));
|
|
}
|
|
}
|
|
|
|
if (controllers) {
|
|
uint32_t numControllers;
|
|
nsresult rv = controllers->GetControllerCount(&numControllers);
|
|
NS_ASSERTION((NS_SUCCEEDED(rv)),
|
|
"bad result in gfx text control destructor");
|
|
for (uint32_t i = 0; i < numControllers; i++) {
|
|
nsCOMPtr<nsIController> controller;
|
|
rv = controllers->GetControllerAt(i, getter_AddRefs(controller));
|
|
if (NS_SUCCEEDED(rv) && controller) {
|
|
nsCOMPtr<nsIControllerContext> editController =
|
|
do_QueryInterface(controller);
|
|
if (editController) {
|
|
editController->SetCommandContext(nullptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mSelCon) {
|
|
if (mTextListener) {
|
|
mTextListener->EndListeningToSelectionChange();
|
|
}
|
|
|
|
mSelCon->SetScrollableFrame(nullptr);
|
|
mSelCon = nullptr;
|
|
}
|
|
|
|
if (mTextListener) {
|
|
mTextListener->SetFrame(nullptr);
|
|
|
|
EventListenerManager* manager =
|
|
mTextCtrlElement->GetExistingListenerManager();
|
|
if (manager) {
|
|
manager->RemoveEventListenerByType(mTextListener,
|
|
NS_LITERAL_STRING("keydown"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
manager->RemoveEventListenerByType(mTextListener,
|
|
NS_LITERAL_STRING("keypress"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
manager->RemoveEventListenerByType(mTextListener,
|
|
NS_LITERAL_STRING("keyup"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
}
|
|
|
|
mTextListener = nullptr;
|
|
}
|
|
|
|
mBoundFrame = nullptr;
|
|
|
|
// Now that we don't have a frame any more, store the value in the text
|
|
// buffer. The only case where we don't do this is if a value transfer is in
|
|
// progress.
|
|
if (!mValueTransferInProgress) {
|
|
DebugOnly<bool> ok = SetValue(value, eSetValue_Internal);
|
|
// TODO Find something better to do if this fails...
|
|
NS_WARNING_ASSERTION(ok, "SetValue() couldn't allocate memory");
|
|
}
|
|
}
|
|
|
|
void TextControlState::GetValue(nsAString& aValue, bool aIgnoreWrap) const {
|
|
// While SetValue() is being called and requesting to commit composition to
|
|
// IME, GetValue() may be called for appending text or something. Then, we
|
|
// need to return the latest aValue of SetValue() since the value hasn't
|
|
// been set to the editor yet.
|
|
// XXX After implementing "beforeinput" event, this becomes wrong. The
|
|
// value should be modified immediately after "beforeinput" event for
|
|
// "insertReplacementText".
|
|
if (mHandlingState &&
|
|
mHandlingState->IsHandling(TextControlAction::CommitComposition)) {
|
|
aValue = mHandlingState->GetSettingValue();
|
|
MOZ_ASSERT(aValue.FindChar(static_cast<char16_t>('\r')) == -1);
|
|
return;
|
|
}
|
|
|
|
if (mTextEditor && mBoundFrame &&
|
|
(mEditorInitialized || !IsSingleLineTextControl())) {
|
|
if (aIgnoreWrap && !mBoundFrame->CachedValue().IsVoid()) {
|
|
aValue = mBoundFrame->CachedValue();
|
|
MOZ_ASSERT(aValue.FindChar(static_cast<char16_t>('\r')) == -1);
|
|
return;
|
|
}
|
|
|
|
aValue.Truncate(); // initialize out param
|
|
|
|
uint32_t flags = (nsIDocumentEncoder::OutputLFLineBreak |
|
|
nsIDocumentEncoder::OutputPreformatted |
|
|
nsIDocumentEncoder::OutputPersistNBSP |
|
|
nsIDocumentEncoder::OutputBodyOnly);
|
|
if (!aIgnoreWrap) {
|
|
TextControlElement::nsHTMLTextWrap wrapProp;
|
|
if (mTextCtrlElement &&
|
|
TextControlElement::GetWrapPropertyEnum(mTextCtrlElement, wrapProp) &&
|
|
wrapProp == TextControlElement::eHTMLTextWrap_Hard) {
|
|
flags |= nsIDocumentEncoder::OutputWrap;
|
|
}
|
|
}
|
|
|
|
// What follows is a bit of a hack. The problem is that we could be in
|
|
// this method because we're being destroyed for whatever reason while
|
|
// script is executing. If that happens, editor will run with the
|
|
// privileges of the executing script, which means it may not be able to
|
|
// access its own DOM nodes! Let's try to deal with that by pushing a null
|
|
// JSContext on the JSContext stack to make it clear that we're native
|
|
// code. Note that any script that's directly trying to access our value
|
|
// has to be going through some scriptable object to do that and that
|
|
// already does the relevant security checks.
|
|
// XXXbz if we could just get the textContent of our anonymous content (eg
|
|
// if plaintext editor didn't create <br> nodes all over), we wouldn't need
|
|
// this.
|
|
{ /* Scope for AutoNoJSAPI. */
|
|
AutoNoJSAPI nojsapi;
|
|
|
|
DebugOnly<nsresult> rv = mTextEditor->ComputeTextValue(flags, aValue);
|
|
MOZ_ASSERT(aValue.FindChar(static_cast<char16_t>('\r')) == -1);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to get value");
|
|
}
|
|
// Only when the result doesn't include line breaks caused by hard-wrap,
|
|
// mCacheValue should cache the value.
|
|
if (!(flags & nsIDocumentEncoder::OutputWrap)) {
|
|
mBoundFrame->CacheValue(aValue);
|
|
} else {
|
|
mBoundFrame->ClearCachedValue();
|
|
}
|
|
} else {
|
|
if (!mTextCtrlElement->ValueChanged() || !mValue) {
|
|
// Use nsString to avoid copying string buffer at setting aValue.
|
|
nsString value;
|
|
mTextCtrlElement->GetDefaultValueFromContent(value);
|
|
// TODO: We should make default value not include \r.
|
|
nsContentUtils::PlatformToDOMLineBreaks(value);
|
|
aValue = value;
|
|
} else {
|
|
aValue = *mValue;
|
|
MOZ_ASSERT(aValue.FindChar(static_cast<char16_t>('\r')) == -1);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool TextControlState::ValueEquals(const nsAString& aValue) const {
|
|
// We can avoid copying string buffer in many cases. Therefore, we should
|
|
// use nsString rather than nsAutoString here.
|
|
nsString value;
|
|
GetValue(value, true);
|
|
return aValue.Equals(value);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// @param aFlags TextControlState::SetValueFlags
|
|
bool AreFlagsNotDemandingContradictingMovements(uint32_t aFlags) {
|
|
return !(
|
|
!!(aFlags &
|
|
TextControlState::
|
|
eSetValue_MoveCursorToBeginSetSelectionDirectionForward) &&
|
|
!!(aFlags & TextControlState::eSetValue_MoveCursorToEndIfValueChanged));
|
|
}
|
|
#endif // DEBUG
|
|
|
|
bool TextControlState::SetValue(const nsAString& aValue,
|
|
const nsAString* aOldValue, uint32_t aFlags) {
|
|
if (mHandlingState &&
|
|
mHandlingState->IsHandling(TextControlAction::CommitComposition)) {
|
|
// GetValue doesn't return current text frame's content during committing.
|
|
// So we cannot trust this old value
|
|
aOldValue = nullptr;
|
|
}
|
|
|
|
ErrorResult error;
|
|
AutoTextControlHandlingState handlingSetValue(
|
|
*this, TextControlAction::SetValue, aValue, aOldValue, aFlags, error);
|
|
if (error.Failed()) {
|
|
MOZ_ASSERT(error.ErrorCodeIs(NS_ERROR_OUT_OF_MEMORY));
|
|
error.SuppressException();
|
|
return false;
|
|
}
|
|
|
|
// Note that if this may be called during reframe of the editor. In such
|
|
// case, we shouldn't commit composition. Therefore, when this is called
|
|
// for internal processing, we shouldn't commit the composition.
|
|
// TODO: In strictly speaking, we should move committing composition into
|
|
// editor because if "beforeinput" for this setting value is canceled,
|
|
// we shouldn't commit composition. However, in Firefox, we never
|
|
// call this via `setUserInput` during composition. Therefore, the
|
|
// bug must not be reproducible actually.
|
|
if (aFlags & (eSetValue_BySetUserInput | eSetValue_ByContent)) {
|
|
if (EditorHasComposition()) {
|
|
// When this is called recursively, there shouldn't be composition.
|
|
if (handlingSetValue.IsHandling(TextControlAction::CommitComposition)) {
|
|
// Don't request to commit composition again. But if it occurs,
|
|
// we should skip to set the new value to the editor here. It should
|
|
// be set later with the newest value.
|
|
return true;
|
|
}
|
|
if (NS_WARN_IF(!mBoundFrame)) {
|
|
// We're not sure if this case is possible.
|
|
} else {
|
|
// If setting value won't change current value, we shouldn't commit
|
|
// composition for compatibility with the other browsers.
|
|
MOZ_ASSERT(!aOldValue || mBoundFrame->TextEquals(*aOldValue));
|
|
bool isSameAsCurrentValue =
|
|
aOldValue
|
|
? aOldValue->Equals(handlingSetValue.GetSettingValue())
|
|
: mBoundFrame->TextEquals(handlingSetValue.GetSettingValue());
|
|
if (isSameAsCurrentValue) {
|
|
// Note that in this case, we shouldn't fire any events with setting
|
|
// value because event handlers may try to set value recursively but
|
|
// we cannot commit composition at that time due to unsafe to run
|
|
// script (see below).
|
|
return true;
|
|
}
|
|
}
|
|
// If there is composition, need to commit composition first because
|
|
// other browsers do that.
|
|
// NOTE: We don't need to block nested calls of this because input nor
|
|
// other events won't be fired by setting values and script blocker
|
|
// is used during setting the value to the editor. IE also allows
|
|
// to set the editor value on the input event which is caused by
|
|
// forcibly committing composition.
|
|
AutoTextControlHandlingState handlingCommitComposition(
|
|
*this, TextControlAction::CommitComposition);
|
|
if (nsContentUtils::IsSafeToRunScript()) {
|
|
// WARNING: During this call, compositionupdate, compositionend, input
|
|
// events will be fired. Therefore, everything can occur. E.g., the
|
|
// document may be unloaded.
|
|
RefPtr<TextEditor> textEditor = mTextEditor;
|
|
nsresult rv = textEditor->CommitComposition();
|
|
if (handlingCommitComposition.IsTextControlStateDestroyed()) {
|
|
return true;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("TextControlState failed to commit composition");
|
|
return true;
|
|
}
|
|
// Note that if a composition event listener sets editor value again,
|
|
// we should use the new value here. The new value is stored in
|
|
// handlingSetValue right now.
|
|
} else {
|
|
NS_WARNING(
|
|
"SetValue() is called when there is composition but "
|
|
"it's not safe to request to commit the composition");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mTextEditor && mBoundFrame) {
|
|
AutoWeakFrame weakFrame(mBoundFrame);
|
|
|
|
if (!SetValueWithTextEditor(handlingSetValue)) {
|
|
return false;
|
|
}
|
|
|
|
if (!weakFrame.IsAlive()) {
|
|
return true;
|
|
}
|
|
} else if (!SetValueWithoutTextEditor(handlingSetValue)) {
|
|
return false;
|
|
}
|
|
|
|
// TODO(emilio): It seems wrong to pass ValueChangeKind::Script if
|
|
// BySetUserInput is in aFlags.
|
|
auto changeKind = (aFlags & eSetValue_Internal) ? ValueChangeKind::Internal
|
|
: ValueChangeKind::Script;
|
|
|
|
// XXX Should we stop notifying "value changed" if mTextCtrlElement has
|
|
// been cleared?
|
|
handlingSetValue.GetTextControlElement()->OnValueChanged(
|
|
/* aNotify = */ !!mBoundFrame, changeKind);
|
|
return true;
|
|
}
|
|
|
|
bool TextControlState::SetValueWithTextEditor(
|
|
AutoTextControlHandlingState& aHandlingSetValue) {
|
|
MOZ_ASSERT(aHandlingSetValue.Is(TextControlAction::SetValue));
|
|
MOZ_ASSERT(mTextEditor);
|
|
MOZ_ASSERT(mBoundFrame);
|
|
NS_WARNING_ASSERTION(!EditorHasComposition(),
|
|
"Failed to commit composition before setting value. "
|
|
"Investigate the cause!");
|
|
|
|
#ifdef DEBUG
|
|
if (IsSingleLineTextControl()) {
|
|
NS_ASSERTION(mEditorInitialized || aHandlingSetValue.IsHandling(
|
|
TextControlAction::PrepareEditor),
|
|
"We should never try to use the editor if we're not "
|
|
"initialized unless we're being initialized");
|
|
}
|
|
#endif
|
|
|
|
MOZ_ASSERT(!aHandlingSetValue.GetOldValue() ||
|
|
mBoundFrame->TextEquals(*aHandlingSetValue.GetOldValue()));
|
|
bool isSameAsCurrentValue =
|
|
aHandlingSetValue.GetOldValue()
|
|
? aHandlingSetValue.GetOldValue()->Equals(
|
|
aHandlingSetValue.GetSettingValue())
|
|
: mBoundFrame->TextEquals(aHandlingSetValue.GetSettingValue());
|
|
|
|
// this is necessary to avoid infinite recursion
|
|
if (isSameAsCurrentValue) {
|
|
return true;
|
|
}
|
|
|
|
RefPtr<TextEditor> textEditor = mTextEditor;
|
|
|
|
nsCOMPtr<Document> document = textEditor->GetDocument();
|
|
if (NS_WARN_IF(!document)) {
|
|
return true;
|
|
}
|
|
|
|
// Time to mess with our security context... See comments in GetValue()
|
|
// for why this is needed. Note that we have to do this up here, because
|
|
// otherwise SelectAll() will fail.
|
|
AutoNoJSAPI nojsapi;
|
|
|
|
// FYI: It's safe to use raw pointer for selection here because
|
|
// SelectionBatcher will grab it with RefPtr.
|
|
Selection* selection = mSelCon->GetSelection(SelectionType::eNormal);
|
|
SelectionBatcher selectionBatcher(selection);
|
|
|
|
// get the flags, remove readonly, disabled and max-length,
|
|
// set the value, restore flags
|
|
AutoRestoreEditorState restoreState(textEditor);
|
|
|
|
aHandlingSetValue.WillSetValueWithTextEditor();
|
|
|
|
if (aHandlingSetValue.GetSetValueFlags() & eSetValue_BySetUserInput) {
|
|
// If the caller inserts text as part of user input, for example,
|
|
// autocomplete, we need to replace the text as "insert string"
|
|
// because undo should cancel only this operation (i.e., previous
|
|
// transactions typed by user shouldn't be merged with this).
|
|
// In this case, we need to dispatch "input" event because
|
|
// web apps may need to know the user's operation.
|
|
// In this case, we need to dispatch "beforeinput" events since
|
|
// we're emulating the user's input. Passing nullptr as
|
|
// nsIPrincipal means that that may be user's input. So, let's
|
|
// do it.
|
|
nsresult rv = textEditor->ReplaceTextAsAction(
|
|
aHandlingSetValue.GetSettingValue(), nullptr, nullptr);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditor::ReplaceTextAsAction() failed");
|
|
return rv != NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Don't dispatch "beforeinput" event nor "input" event for setting value
|
|
// by script.
|
|
AutoInputEventSuppresser suppressInputEventDispatching(textEditor);
|
|
|
|
if (aHandlingSetValue.GetSetValueFlags() & eSetValue_ForXUL) {
|
|
// On XUL <textbox> element, we need to preserve existing undo
|
|
// transactions.
|
|
// XXX Do we really need to do such complicated optimization?
|
|
// This was landed for web pages which set <textarea> value
|
|
// per line (bug 518122). For example:
|
|
// for (;;) {
|
|
// textarea.value += oneLineText + "\n";
|
|
// }
|
|
// However, this path won't be used in web content anymore.
|
|
nsCOMPtr<nsISelectionController> kungFuDeathGrip = mSelCon.get();
|
|
// Use nsString to avoid copying string buffer in most cases.
|
|
nsString currentValue;
|
|
if (aHandlingSetValue.GetOldValue()) {
|
|
currentValue.Assign(*aHandlingSetValue.GetOldValue());
|
|
} else {
|
|
mBoundFrame->GetText(currentValue);
|
|
}
|
|
uint32_t currentLength = currentValue.Length();
|
|
uint32_t newlength = aHandlingSetValue.GetSettingValue().Length();
|
|
if (!currentLength ||
|
|
!StringBeginsWith(aHandlingSetValue.GetSettingValue(), currentValue)) {
|
|
// Replace the whole text.
|
|
currentLength = 0;
|
|
kungFuDeathGrip->SelectAll();
|
|
} else {
|
|
// Collapse selection to the end so that we can append data.
|
|
mBoundFrame->SelectAllOrCollapseToEndOfText(false);
|
|
}
|
|
const nsAString& insertValue = StringTail(
|
|
aHandlingSetValue.GetSettingValue(), newlength - currentLength);
|
|
|
|
if (insertValue.IsEmpty()) {
|
|
// In this case, we makes the editor stop dispatching "input"
|
|
// event so that passing nullptr as nsIPrincipal is safe for
|
|
// now.
|
|
nsresult rv = textEditor->DeleteSelectionAsAction(
|
|
nsIEditor::eNone, nsIEditor::eStrip, nullptr);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditor::DeleteSelectionAsAction() failed");
|
|
return rv != NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
// In this case, we makes the editor stop dispatching "input"
|
|
// event so that passing nullptr as nsIPrincipal is safe for
|
|
// now.
|
|
nsresult rv = textEditor->InsertTextAsAction(insertValue, nullptr);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditor::InsertTextAsAction() failed");
|
|
return rv != NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// On <input> or <textarea>, we shouldn't preserve existing undo
|
|
// transactions because other browsers do not preserve them too
|
|
// and not preserving transactions makes setting value faster.
|
|
AutoDisableUndo disableUndo(textEditor);
|
|
if (selection) {
|
|
// Since we don't use undo transaction, we don't need to store
|
|
// selection state. SetText will set selection to tail.
|
|
IgnoredErrorResult ignoredError;
|
|
selection->RemoveAllRanges(ignoredError);
|
|
NS_WARNING_ASSERTION(!ignoredError.Failed(),
|
|
"Selection::RemoveAllRanges() failed, but ignored");
|
|
}
|
|
|
|
// In this case, we makes the editor stop dispatching "input"
|
|
// event so that passing nullptr as nsIPrincipal is safe for now.
|
|
nsresult rv =
|
|
textEditor->SetTextAsAction(aHandlingSetValue.GetSettingValue(), nullptr);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditor::SetTextAsAction() failed");
|
|
|
|
// Call the listener's OnEditActionHandled() callback manually if
|
|
// OnEditActionHandled() hasn't been called yet since TextEditor don't use
|
|
// the transaction manager in this path and it could be that the editor
|
|
// would bypass calling the listener for that reason.
|
|
if (!aHandlingSetValue.HasEditActionHandled()) {
|
|
nsresult rvOnEditActionHandled =
|
|
MOZ_KnownLive(aHandlingSetValue.GetTextInputListener())
|
|
->OnEditActionHandled(*textEditor);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvOnEditActionHandled),
|
|
"TextInputListener::OnEditActionHandled() failed");
|
|
if (rv != NS_ERROR_OUT_OF_MEMORY) {
|
|
rv = rvOnEditActionHandled;
|
|
}
|
|
}
|
|
|
|
return rv != NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
bool TextControlState::SetValueWithoutTextEditor(
|
|
AutoTextControlHandlingState& aHandlingSetValue) {
|
|
MOZ_ASSERT(aHandlingSetValue.Is(TextControlAction::SetValue));
|
|
MOZ_ASSERT(!mTextEditor || !mBoundFrame);
|
|
NS_WARNING_ASSERTION(!EditorHasComposition(),
|
|
"Failed to commit composition before setting value. "
|
|
"Investigate the cause!");
|
|
|
|
if (!mValue) {
|
|
mValue.emplace();
|
|
}
|
|
|
|
// We can't just early-return here, because ValueWasChanged and
|
|
// OnValueChanged below still need to be called.
|
|
if (!mValue->Equals(aHandlingSetValue.GetSettingValue()) ||
|
|
!StaticPrefs::dom_input_skip_cursor_move_for_same_value_set()) {
|
|
bool handleSettingValue = true;
|
|
// If `SetValue()` call is nested, `GetSettingValue()` result will be
|
|
// modified. So, we need to store input event data value before
|
|
// dispatching beforeinput event.
|
|
nsString inputEventData(aHandlingSetValue.GetSettingValue());
|
|
if ((aHandlingSetValue.GetSetValueFlags() & eSetValue_BySetUserInput) &&
|
|
StaticPrefs::dom_input_events_beforeinput_enabled() &&
|
|
!aHandlingSetValue.HasBeforeInputEventDispatched()) {
|
|
// This probably occurs when session restorer sets the old value with
|
|
// `setUserInput`. If so, we need to dispatch "beforeinput" event of
|
|
// "insertReplacementText" for conforming to the spec. However, the
|
|
// spec does NOT treat the session restoring case. Therefore, if this
|
|
// breaks session restorere in a lot of web apps, we should probably
|
|
// stop dispatching it or make it non-cancelable.
|
|
MOZ_ASSERT(aHandlingSetValue.GetTextControlElement());
|
|
MOZ_ASSERT(!aHandlingSetValue.GetSettingValue().IsVoid());
|
|
aHandlingSetValue.WillDispatchBeforeInputEvent();
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
DebugOnly<nsresult> rvIgnored = nsContentUtils::DispatchInputEvent(
|
|
MOZ_KnownLive(aHandlingSetValue.GetTextControlElement()),
|
|
eEditorBeforeInput, EditorInputType::eInsertReplacementText, nullptr,
|
|
InputEventOptions(inputEventData), &status);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"Failed to dispatch beforeinput event");
|
|
if (status == nsEventStatus_eConsumeNoDefault) {
|
|
return true; // "beforeinput" event was canceled.
|
|
}
|
|
// If we were destroyed by "beforeinput" event listeners, probably, we
|
|
// don't need to keep handling it.
|
|
if (aHandlingSetValue.IsTextControlStateDestroyed()) {
|
|
return true;
|
|
}
|
|
// Even if "beforeinput" event was not canceled, its listeners may do
|
|
// something. If it causes creating `TextEditor` and bind this to a
|
|
// frame, we need to use the path, but `TextEditor` shouldn't fire
|
|
// "beforeinput" event again. Therefore, we need to prevent editor
|
|
// to dispatch it.
|
|
if (mTextEditor && mBoundFrame) {
|
|
AutoInputEventSuppresser suppressInputEvent(mTextEditor);
|
|
if (!SetValueWithTextEditor(aHandlingSetValue)) {
|
|
return false;
|
|
}
|
|
// If we were destroyed by "beforeinput" event listeners, probably, we
|
|
// don't need to keep handling it.
|
|
if (aHandlingSetValue.IsTextControlStateDestroyed()) {
|
|
return true;
|
|
}
|
|
handleSettingValue = false;
|
|
}
|
|
}
|
|
|
|
if (handleSettingValue) {
|
|
if (!mValue->Assign(aHandlingSetValue.GetSettingValue(), fallible)) {
|
|
return false;
|
|
}
|
|
|
|
// Since we have no editor we presumably have cached selection state.
|
|
if (IsSelectionCached()) {
|
|
MOZ_ASSERT(AreFlagsNotDemandingContradictingMovements(
|
|
aHandlingSetValue.GetSetValueFlags()));
|
|
|
|
SelectionProperties& props = GetSelectionProperties();
|
|
if (aHandlingSetValue.GetSetValueFlags() &
|
|
eSetValue_MoveCursorToEndIfValueChanged) {
|
|
props.SetStart(aHandlingSetValue.GetSettingValue().Length());
|
|
props.SetEnd(aHandlingSetValue.GetSettingValue().Length());
|
|
props.SetDirection(nsITextControlFrame::eForward);
|
|
} else if (aHandlingSetValue.GetSetValueFlags() &
|
|
eSetValue_MoveCursorToBeginSetSelectionDirectionForward) {
|
|
props.SetStart(0);
|
|
props.SetEnd(0);
|
|
props.SetDirection(nsITextControlFrame::eForward);
|
|
} else {
|
|
// Make sure our cached selection position is not outside the new
|
|
// value.
|
|
props.SetStart(std::min(
|
|
props.GetStart(), aHandlingSetValue.GetSettingValue().Length()));
|
|
props.SetEnd(std::min(props.GetEnd(),
|
|
aHandlingSetValue.GetSettingValue().Length()));
|
|
}
|
|
}
|
|
|
|
// Update the frame display if needed
|
|
if (mBoundFrame) {
|
|
mBoundFrame->UpdateValueDisplay(true);
|
|
}
|
|
}
|
|
|
|
// If this is called as part of user input, we need to dispatch "input"
|
|
// event with "insertReplacementText" since web apps may want to know
|
|
// the user operation which changes editor value with a built-in function
|
|
// like autocomplete, password manager, session restore, etc.
|
|
// XXX Should we stop dispatching `input` event if the text control
|
|
// element has already removed from the DOM tree by a `beforeinput`
|
|
// event listener?
|
|
if (aHandlingSetValue.GetSetValueFlags() & eSetValue_BySetUserInput) {
|
|
MOZ_ASSERT(aHandlingSetValue.GetTextControlElement());
|
|
|
|
// Update validity state before dispatching "input" event for its
|
|
// listeners like `EditorBase::NotifyEditorObservers()`.
|
|
aHandlingSetValue.GetTextControlElement()->OnValueChanged(
|
|
true, ValueChangeKind::UserInteraction);
|
|
|
|
MOZ_ASSERT(!aHandlingSetValue.GetSettingValue().IsVoid());
|
|
DebugOnly<nsresult> rvIgnored = nsContentUtils::DispatchInputEvent(
|
|
MOZ_KnownLive(aHandlingSetValue.GetTextControlElement()),
|
|
eEditorInput, EditorInputType::eInsertReplacementText, nullptr,
|
|
InputEventOptions(inputEventData));
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"Failed to dispatch input event");
|
|
}
|
|
} else {
|
|
// Even if our value is not actually changing, apparently we need to mark
|
|
// our SelectionProperties dirty to make accessibility tests happy.
|
|
// Probably because they depend on the SetSelectionRange() call we make on
|
|
// our frame in RestoreSelectionState, but I have no idea why they do.
|
|
if (IsSelectionCached()) {
|
|
SelectionProperties& props = GetSelectionProperties();
|
|
props.SetIsDirty();
|
|
}
|
|
}
|
|
|
|
// If we've reached the point where the root node has been created, we
|
|
// can assume that it's safe to notify.
|
|
ValueWasChanged(!!mBoundFrame);
|
|
return true;
|
|
}
|
|
|
|
bool TextControlState::HasNonEmptyValue() {
|
|
// If the frame for editor is alive, we can compute it with mTextEditor.
|
|
// Otherwise, we need to check cached value via GetValue().
|
|
if (mTextEditor && mBoundFrame && mEditorInitialized &&
|
|
!(mHandlingState &&
|
|
mHandlingState->IsHandling(TextControlAction::CommitComposition))) {
|
|
return !mTextEditor->IsEmpty();
|
|
}
|
|
|
|
nsAutoString value;
|
|
GetValue(value, true);
|
|
return !value.IsEmpty();
|
|
}
|
|
|
|
void TextControlState::InitializeKeyboardEventListeners() {
|
|
// register key listeners
|
|
EventListenerManager* manager =
|
|
mTextCtrlElement->GetOrCreateListenerManager();
|
|
if (manager) {
|
|
manager->AddEventListenerByType(mTextListener, NS_LITERAL_STRING("keydown"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
manager->AddEventListenerByType(mTextListener,
|
|
NS_LITERAL_STRING("keypress"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
manager->AddEventListenerByType(mTextListener, NS_LITERAL_STRING("keyup"),
|
|
TrustedEventsAtSystemGroupBubble());
|
|
}
|
|
|
|
mSelCon->SetScrollableFrame(mBoundFrame->GetScrollTargetFrame());
|
|
}
|
|
|
|
void TextControlState::ValueWasChanged(bool aNotify) {
|
|
UpdateOverlayTextVisibility(aNotify);
|
|
}
|
|
|
|
void TextControlState::SetPreviewText(const nsAString& aValue, bool aNotify) {
|
|
// If we don't have a preview div, there's nothing to do.
|
|
Element* previewDiv = GetPreviewNode();
|
|
if (!previewDiv) {
|
|
return;
|
|
}
|
|
|
|
nsAutoString previewValue(aValue);
|
|
|
|
nsContentUtils::RemoveNewlines(previewValue);
|
|
MOZ_ASSERT(previewDiv->GetFirstChild(), "preview div has no child");
|
|
previewDiv->GetFirstChild()->AsText()->SetText(previewValue, aNotify);
|
|
|
|
UpdateOverlayTextVisibility(aNotify);
|
|
}
|
|
|
|
void TextControlState::GetPreviewText(nsAString& aValue) {
|
|
// If we don't have a preview div, there's nothing to do.
|
|
Element* previewDiv = GetPreviewNode();
|
|
if (!previewDiv) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(previewDiv->GetFirstChild(), "preview div has no child");
|
|
const nsTextFragment* text = previewDiv->GetFirstChild()->GetText();
|
|
|
|
aValue.Truncate();
|
|
text->AppendTo(aValue);
|
|
}
|
|
|
|
void TextControlState::UpdateOverlayTextVisibility(bool aNotify) {
|
|
nsAutoString value, previewValue;
|
|
bool valueIsEmpty = !HasNonEmptyValue();
|
|
GetPreviewText(previewValue);
|
|
|
|
mPreviewVisibility = valueIsEmpty && !previewValue.IsEmpty();
|
|
mPlaceholderVisibility = valueIsEmpty && previewValue.IsEmpty();
|
|
|
|
if (mPlaceholderVisibility && !StaticPrefs::dom_placeholder_show_on_focus()) {
|
|
mPlaceholderVisibility =
|
|
!nsContentUtils::IsFocusedContent(mTextCtrlElement);
|
|
}
|
|
|
|
if (mBoundFrame && aNotify) {
|
|
mBoundFrame->InvalidateFrame();
|
|
}
|
|
}
|
|
|
|
void TextControlState::HideSelectionIfBlurred() {
|
|
MOZ_ASSERT(mSelCon, "Should have a selection controller if we have a frame!");
|
|
if (!nsContentUtils::IsFocusedContent(mTextCtrlElement)) {
|
|
mSelCon->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
}
|
|
}
|
|
|
|
bool TextControlState::EditorHasComposition() {
|
|
return mTextEditor && mTextEditor->IsIMEComposing();
|
|
}
|
|
|
|
} // namespace mozilla
|