зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
3.2 KiB
C++
101 строка
3.2 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 "nsSearchControlFrame.h"
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#include "HTMLInputElement.h"
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#include "mozilla/PresShell.h"
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#include "nsGkAtoms.h"
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#include "nsNameSpaceManager.h"
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#include "nsStyleConsts.h"
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#include "nsContentUtils.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsCSSPseudoElements.h"
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#include "nsICSSDeclaration.h"
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#ifdef ACCESSIBILITY
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# include "mozilla/a11y/AccTypes.h"
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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nsIFrame* NS_NewSearchControlFrame(PresShell* aPresShell,
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ComputedStyle* aStyle) {
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return new (aPresShell)
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nsSearchControlFrame(aStyle, aPresShell->GetPresContext());
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsSearchControlFrame)
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NS_QUERYFRAME_HEAD(nsSearchControlFrame)
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NS_QUERYFRAME_ENTRY(nsSearchControlFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsTextControlFrame)
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nsSearchControlFrame::nsSearchControlFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsTextControlFrame(aStyle, aPresContext, kClassID) {}
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void nsSearchControlFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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aPostDestroyData.AddAnonymousContent(mClearButton.forget());
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nsTextControlFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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nsresult nsSearchControlFrame::CreateAnonymousContent(
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nsTArray<ContentInfo>& aElements) {
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// We create an anonymous tree for our input element that is structured as
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// follows:
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//
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// input
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// button - clear button
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// div - editor root
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// div - placeholder
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// div - preview div
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//
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// If you change this, be careful to change the destruction order in
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// nsSearchControlFrame::DestroyFrom.
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// Create the ::-moz-search-clear-button pseudo-element:
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mClearButton = MakeAnonElement(PseudoStyleType::mozSearchClearButton, nullptr,
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nsGkAtoms::button);
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aElements.AppendElement(mClearButton);
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nsTextControlFrame::CreateAnonymousContent(aElements);
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// Update clear button visibility based on value
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UpdateClearButtonState();
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return NS_OK;
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}
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void nsSearchControlFrame::AppendAnonymousContentTo(
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nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
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if (mClearButton) {
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aElements.AppendElement(mClearButton);
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}
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nsTextControlFrame::AppendAnonymousContentTo(aElements, aFilter);
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}
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void nsSearchControlFrame::UpdateClearButtonState() {
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if (!mClearButton) {
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return;
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}
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auto* content = HTMLInputElement::FromNode(mContent);
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nsGenericHTMLElement* element = nsGenericHTMLElement::FromNode(mClearButton);
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nsCOMPtr<nsICSSDeclaration> declaration = element->Style();
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if (content->IsValueEmpty()) {
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declaration->SetProperty("visibility"_ns, "hidden"_ns, ""_ns,
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IgnoreErrors());
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} else {
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nsAutoCString dummy;
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declaration->RemoveProperty("visibility"_ns, dummy, IgnoreErrors());
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}
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}
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