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gecko-dev/editor/libeditor/EditorCommands.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "EditorCommands.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/FlushType.h"
#include "mozilla/TextEditor.h"
#include "mozilla/dom/Selection.h"
#include "nsCommandParams.h"
#include "nsCOMPtr.h"
#include "nsCRT.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsIClipboard.h"
#include "nsID.h"
#include "mozilla/dom/Document.h"
#include "nsIEditor.h"
#include "nsISelectionController.h"
#include "nsITransferable.h"
#include "nsString.h"
#include "nsAString.h"
class nsISupports;
#define STATE_ENABLED "state_enabled"
#define STATE_DATA "state_data"
namespace mozilla {
/******************************************************************************
* mozilla::EditorCommandBase
******************************************************************************/
EditorCommandBase::EditorCommandBase() {}
NS_IMPL_ISUPPORTS(EditorCommandBase, nsIControllerCommand)
/******************************************************************************
* mozilla::UndoCommand
******************************************************************************/
NS_IMETHODIMP
UndoCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (!textEditor->IsSelectionEditable()) {
return NS_OK;
}
*aIsEnabled = textEditor->CanUndo();
return NS_OK;
}
NS_IMETHODIMP
UndoCommand::DoCommand(const char* aCommandName, nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->Undo(1);
}
NS_IMETHODIMP
UndoCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
UndoCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::RedoCommand
******************************************************************************/
NS_IMETHODIMP
RedoCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (!textEditor->IsSelectionEditable()) {
return NS_OK;
}
*aIsEnabled = textEditor->CanRedo();
return NS_OK;
}
NS_IMETHODIMP
RedoCommand::DoCommand(const char* aCommandName, nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->Redo(1);
}
NS_IMETHODIMP
RedoCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
RedoCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::ClearUndoCommand
******************************************************************************/
NS_IMETHODIMP
ClearUndoCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
ClearUndoCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
// XXX Should we return NS_ERROR_FAILURE if ClearUndoRedo() returns false?
DebugOnly<bool> clearedUndoRedo = textEditor->ClearUndoRedo();
NS_WARNING_ASSERTION(clearedUndoRedo,
"Failed to clear undo/redo transactions");
return NS_OK;
}
NS_IMETHODIMP
ClearUndoCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
ClearUndoCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
NS_ENSURE_ARG_POINTER(aParams);
bool enabled;
nsresult rv = IsCommandEnabled(aCommandName, aCommandRefCon, &enabled);
NS_ENSURE_SUCCESS(rv, rv);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, enabled);
}
/******************************************************************************
* mozilla::CutCommand
******************************************************************************/
NS_IMETHODIMP
CutCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (!textEditor->IsSelectionEditable()) {
return NS_OK;
}
return editor->CanCut(aIsEnabled);
}
NS_IMETHODIMP
CutCommand::DoCommand(const char* aCommandName, nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->Cut();
}
NS_IMETHODIMP
CutCommand::DoCommandParams(const char* aCommandName, nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
CutCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::CutOrDeleteCommand
******************************************************************************/
NS_IMETHODIMP
CutOrDeleteCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
CutOrDeleteCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
dom::Selection* selection = textEditor->GetSelection();
if (selection && selection->IsCollapsed()) {
nsresult rv = textEditor->DeleteSelectionAsAction(nsIEditor::eNext,
nsIEditor::eStrip);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
return textEditor->Cut();
}
NS_IMETHODIMP
CutOrDeleteCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
CutOrDeleteCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::CopyCommand
******************************************************************************/
NS_IMETHODIMP
CopyCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->CanCopy(aIsEnabled);
}
NS_IMETHODIMP
CopyCommand::DoCommand(const char* aCommandName, nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->Copy();
}
NS_IMETHODIMP
CopyCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
CopyCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::CopyOrDeleteCommand
******************************************************************************/
NS_IMETHODIMP
CopyOrDeleteCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
CopyOrDeleteCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
dom::Selection* selection = textEditor->GetSelection();
if (selection && selection->IsCollapsed()) {
nsresult rv = textEditor->DeleteSelectionAsAction(nsIEditor::eNextWord,
nsIEditor::eStrip);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
return textEditor->Copy();
}
NS_IMETHODIMP
CopyOrDeleteCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
CopyOrDeleteCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::CopyAndCollapseToEndCommand
******************************************************************************/
NS_IMETHODIMP
CopyAndCollapseToEndCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->CanCopy(aIsEnabled);
}
NS_IMETHODIMP
CopyAndCollapseToEndCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
nsresult rv = textEditor->Copy();
if (NS_FAILED(rv)) {
return rv;
}
RefPtr<dom::Selection> selection = textEditor->GetSelection();
if (selection) {
selection->CollapseToEnd(IgnoreErrors());
}
return NS_OK;
}
NS_IMETHODIMP
CopyAndCollapseToEndCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
CopyAndCollapseToEndCommand::GetCommandStateParams(
const char* aCommandName, nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::PasteCommand
******************************************************************************/
NS_IMETHODIMP
PasteCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (!textEditor->IsSelectionEditable()) {
return NS_OK;
}
return textEditor->CanPaste(nsIClipboard::kGlobalClipboard, aIsEnabled);
}
NS_IMETHODIMP
PasteCommand::DoCommand(const char* aCommandName, nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->PasteAsAction(nsIClipboard::kGlobalClipboard, true);
}
NS_IMETHODIMP
PasteCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
PasteCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::PasteTransferableCommand
******************************************************************************/
NS_IMETHODIMP
PasteTransferableCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (!textEditor->IsSelectionEditable()) {
return NS_OK;
}
*aIsEnabled = textEditor->CanPasteTransferable(nullptr);
return NS_OK;
}
NS_IMETHODIMP
PasteTransferableCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
PasteTransferableCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsISupports> supports =
aParams->AsCommandParams()->GetISupports("transferable");
if (NS_WARN_IF(!supports)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsITransferable> trans = do_QueryInterface(supports);
if (NS_WARN_IF(!trans)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
nsresult rv = textEditor->PasteTransferable(trans);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
// Return NS_OK when editor is destroyed since it's expected by the
// web app.
return NS_OK;
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
PasteTransferableCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsISupports> supports =
aParams->AsCommandParams()->GetISupports("transferable");
if (NS_WARN_IF(!supports)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsITransferable> trans;
trans = do_QueryInterface(supports);
if (NS_WARN_IF(!trans)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return aParams->AsCommandParams()->SetBool(
STATE_ENABLED, textEditor->CanPasteTransferable(trans));
}
/******************************************************************************
* mozilla::SwitchTextDirectionCommand
******************************************************************************/
NS_IMETHODIMP
SwitchTextDirectionCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
SwitchTextDirectionCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->ToggleTextDirection();
}
NS_IMETHODIMP
SwitchTextDirectionCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
SwitchTextDirectionCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canSwitchTextDirection = true;
IsCommandEnabled(aCommandName, aCommandRefCon, &canSwitchTextDirection);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED,
canSwitchTextDirection);
}
/******************************************************************************
* mozilla::DeleteCommand
******************************************************************************/
NS_IMETHODIMP
DeleteCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
// We can generally delete whenever the selection is editable. However,
// cmd_delete doesn't make sense if the selection is collapsed because it's
// directionless, which is the same condition under which we can't cut.
*aIsEnabled = textEditor->IsSelectionEditable();
if (!nsCRT::strcmp("cmd_delete", aCommandName) && *aIsEnabled) {
nsresult rv = textEditor->CanDelete(aIsEnabled);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
return NS_OK;
}
NS_IMETHODIMP
DeleteCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
nsIEditor::EDirection deleteDir = nsIEditor::eNone;
if (!nsCRT::strcmp("cmd_delete", aCommandName)) {
// Really this should probably be eNone, but it only makes a difference if
// the selection is collapsed, and then this command is disabled. So let's
// keep it as it always was to avoid breaking things.
deleteDir = nsIEditor::ePrevious;
} else if (!nsCRT::strcmp("cmd_deleteCharForward", aCommandName)) {
deleteDir = nsIEditor::eNext;
} else if (!nsCRT::strcmp("cmd_deleteCharBackward", aCommandName)) {
deleteDir = nsIEditor::ePrevious;
} else if (!nsCRT::strcmp("cmd_deleteWordBackward", aCommandName)) {
deleteDir = nsIEditor::ePreviousWord;
} else if (!nsCRT::strcmp("cmd_deleteWordForward", aCommandName)) {
deleteDir = nsIEditor::eNextWord;
} else if (!nsCRT::strcmp("cmd_deleteToBeginningOfLine", aCommandName)) {
deleteDir = nsIEditor::eToBeginningOfLine;
} else if (!nsCRT::strcmp("cmd_deleteToEndOfLine", aCommandName)) {
deleteDir = nsIEditor::eToEndOfLine;
} else {
MOZ_CRASH("Unrecognized nsDeleteCommand");
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
nsresult rv =
textEditor->DeleteSelectionAsAction(deleteDir, nsIEditor::eStrip);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
DeleteCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
DeleteCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::SelectAllCommand
******************************************************************************/
NS_IMETHODIMP
SelectAllCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
NS_ENSURE_ARG_POINTER(aIsEnabled);
nsresult rv = NS_OK;
// You can always select all, unless the selection is editable,
// and the editable region is empty!
*aIsEnabled = true;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
// You can select all if there is an editor which is non-empty
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
bool isEmpty = false;
rv = textEditor->IsEmpty(&isEmpty);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
*aIsEnabled = !isEmpty;
return NS_OK;
}
NS_IMETHODIMP
SelectAllCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
return textEditor->SelectAll();
}
NS_IMETHODIMP
SelectAllCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
SelectAllCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::SelectionMoveCommands
******************************************************************************/
NS_IMETHODIMP
SelectionMoveCommands::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
NS_ENSURE_ARG_POINTER(aIsEnabled);
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
*aIsEnabled = false;
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
static const struct ScrollCommand {
const char* reverseScroll;
const char* forwardScroll;
nsresult (NS_STDCALL nsISelectionController::*scroll)(bool);
} scrollCommands[] = {{"cmd_scrollTop", "cmd_scrollBottom",
&nsISelectionController::CompleteScroll},
{"cmd_scrollPageUp", "cmd_scrollPageDown",
&nsISelectionController::ScrollPage},
{"cmd_scrollLineUp", "cmd_scrollLineDown",
&nsISelectionController::ScrollLine}};
static const struct MoveCommand {
const char* reverseMove;
const char* forwardMove;
const char* reverseSelect;
const char* forwardSelect;
nsresult (NS_STDCALL nsISelectionController::*move)(bool, bool);
} moveCommands[] = {
{"cmd_charPrevious", "cmd_charNext", "cmd_selectCharPrevious",
"cmd_selectCharNext", &nsISelectionController::CharacterMove},
{"cmd_linePrevious", "cmd_lineNext", "cmd_selectLinePrevious",
"cmd_selectLineNext", &nsISelectionController::LineMove},
{"cmd_wordPrevious", "cmd_wordNext", "cmd_selectWordPrevious",
"cmd_selectWordNext", &nsISelectionController::WordMove},
{"cmd_beginLine", "cmd_endLine", "cmd_selectBeginLine", "cmd_selectEndLine",
&nsISelectionController::IntraLineMove},
{"cmd_movePageUp", "cmd_movePageDown", "cmd_selectPageUp",
"cmd_selectPageDown", &nsISelectionController::PageMove},
{"cmd_moveTop", "cmd_moveBottom", "cmd_selectTop", "cmd_selectBottom",
&nsISelectionController::CompleteMove}};
static const struct PhysicalCommand {
const char* move;
const char* select;
int16_t direction;
int16_t amount;
} physicalCommands[] = {
{"cmd_moveLeft", "cmd_selectLeft", nsISelectionController::MOVE_LEFT, 0},
{"cmd_moveRight", "cmd_selectRight", nsISelectionController::MOVE_RIGHT, 0},
{"cmd_moveUp", "cmd_selectUp", nsISelectionController::MOVE_UP, 0},
{"cmd_moveDown", "cmd_selectDown", nsISelectionController::MOVE_DOWN, 0},
{"cmd_moveLeft2", "cmd_selectLeft2", nsISelectionController::MOVE_LEFT, 1},
{"cmd_moveRight2", "cmd_selectRight2", nsISelectionController::MOVE_RIGHT,
1},
{"cmd_moveUp2", "cmd_selectUp2", nsISelectionController::MOVE_UP, 1},
{"cmd_moveDown2", "cmd_selectDown2", nsISelectionController::MOVE_DOWN, 1}};
NS_IMETHODIMP
SelectionMoveCommands::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
RefPtr<Document> doc = textEditor->GetDocument();
if (doc) {
// Most of the commands below (possibly all of them) need layout to
// be up to date.
doc->FlushPendingNotifications(FlushType::Layout);
}
nsCOMPtr<nsISelectionController> selectionController =
textEditor->GetSelectionController();
if (NS_WARN_IF(!selectionController)) {
return NS_ERROR_FAILURE;
}
// scroll commands
for (size_t i = 0; i < mozilla::ArrayLength(scrollCommands); i++) {
const ScrollCommand& cmd = scrollCommands[i];
if (!nsCRT::strcmp(aCommandName, cmd.reverseScroll)) {
return (selectionController->*(cmd.scroll))(false);
} else if (!nsCRT::strcmp(aCommandName, cmd.forwardScroll)) {
return (selectionController->*(cmd.scroll))(true);
}
}
// caret movement/selection commands
for (size_t i = 0; i < mozilla::ArrayLength(moveCommands); i++) {
const MoveCommand& cmd = moveCommands[i];
if (!nsCRT::strcmp(aCommandName, cmd.reverseMove)) {
return (selectionController->*(cmd.move))(false, false);
} else if (!nsCRT::strcmp(aCommandName, cmd.forwardMove)) {
return (selectionController->*(cmd.move))(true, false);
} else if (!nsCRT::strcmp(aCommandName, cmd.reverseSelect)) {
return (selectionController->*(cmd.move))(false, true);
} else if (!nsCRT::strcmp(aCommandName, cmd.forwardSelect)) {
return (selectionController->*(cmd.move))(true, true);
}
}
// physical-direction movement/selection
for (size_t i = 0; i < mozilla::ArrayLength(physicalCommands); i++) {
const PhysicalCommand& cmd = physicalCommands[i];
if (!nsCRT::strcmp(aCommandName, cmd.move)) {
return selectionController->PhysicalMove(cmd.direction, cmd.amount,
false);
} else if (!nsCRT::strcmp(aCommandName, cmd.select)) {
return selectionController->PhysicalMove(cmd.direction, cmd.amount, true);
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
SelectionMoveCommands::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
SelectionMoveCommands::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
bool canUndo;
IsCommandEnabled(aCommandName, aCommandRefCon, &canUndo);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, canUndo);
}
/******************************************************************************
* mozilla::InsertPlaintextCommand
******************************************************************************/
NS_IMETHODIMP
InsertPlaintextCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
*aIsEnabled = false;
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
InsertPlaintextCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
// No value is equivalent to empty string
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
// XXX InsertTextAsAction() is not same as OnInputText(). However, other
// commands to insert line break or paragraph separator use OnInput*().
// According to the semantics of those methods, using *AsAction() is
// better, however, this may not cause two or more placeholder
// transactions to the top transaction since its name may not be
// nsGkAtoms::TypingTxnName.
DebugOnly<nsresult> rv = textEditor->InsertTextAsAction(EmptyString());
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert empty string");
return NS_OK;
}
NS_IMETHODIMP
InsertPlaintextCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aParams)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
// Get text to insert from command params
nsAutoString text;
nsresult rv = aParams->AsCommandParams()->GetString(STATE_DATA, text);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
// XXX InsertTextAsAction() is not same as OnInputText(). However, other
// commands to insert line break or paragraph separator use OnInput*().
// According to the semantics of those methods, using *AsAction() is
// better, however, this may not cause two or more placeholder
// transactions to the top transaction since its name may not be
// nsGkAtoms::TypingTxnName.
rv = textEditor->InsertTextAsAction(text);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the text");
return NS_OK;
}
NS_IMETHODIMP
InsertPlaintextCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aParams)) {
return NS_ERROR_INVALID_ARG;
}
bool aIsEnabled = false;
IsCommandEnabled(aCommandName, aCommandRefCon, &aIsEnabled);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, aIsEnabled);
}
/******************************************************************************
* mozilla::InsertParagraphCommand
******************************************************************************/
NS_IMETHODIMP
InsertParagraphCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
*aIsEnabled = false;
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
InsertParagraphCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
HTMLEditor* htmlEditor = editor->AsHTMLEditor();
if (!htmlEditor) {
return NS_OK; // Do nothing for now.
}
return htmlEditor->InsertParagraphSeparatorAsAction();
}
NS_IMETHODIMP
InsertParagraphCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
InsertParagraphCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aParams)) {
return NS_ERROR_INVALID_ARG;
}
bool aIsEnabled = false;
IsCommandEnabled(aCommandName, aCommandRefCon, &aIsEnabled);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, aIsEnabled);
}
/******************************************************************************
* mozilla::InsertLineBreakCommand
******************************************************************************/
NS_IMETHODIMP
InsertLineBreakCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
*aIsEnabled = false;
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
*aIsEnabled = textEditor->IsSelectionEditable();
return NS_OK;
}
NS_IMETHODIMP
InsertLineBreakCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
HTMLEditor* htmlEditor = editor->AsHTMLEditor();
if (!htmlEditor) {
return NS_ERROR_FAILURE;
}
return htmlEditor->InsertLineBreakAsAction();
}
NS_IMETHODIMP
InsertLineBreakCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
return DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
InsertLineBreakCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aParams)) {
return NS_ERROR_INVALID_ARG;
}
bool aIsEnabled = false;
IsCommandEnabled(aCommandName, aCommandRefCon, &aIsEnabled);
return aParams->AsCommandParams()->SetBool(STATE_ENABLED, aIsEnabled);
}
/******************************************************************************
* mozilla::PasteQuotationCommand
******************************************************************************/
NS_IMETHODIMP
PasteQuotationCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aIsEnabled) {
if (NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
*aIsEnabled = false;
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
if (textEditor->IsSingleLineEditor()) {
return NS_OK;
}
return textEditor->CanPaste(nsIClipboard::kGlobalClipboard, aIsEnabled);
}
NS_IMETHODIMP
PasteQuotationCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
nsresult rv = textEditor->PasteAsQuotationAsAction(
nsIClipboard::kGlobalClipboard, true);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
// Return NS_OK when editor is destroyed since it's expected by the
// web app.
return NS_OK;
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
PasteQuotationCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_ERROR_FAILURE;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
nsresult rv = textEditor->PasteAsQuotationAsAction(
nsIClipboard::kGlobalClipboard, true);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
// Return NS_OK when editor is destroyed since it's expected by the
// web app.
return NS_OK;
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
PasteQuotationCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (!editor) {
return NS_OK;
}
TextEditor* textEditor = editor->AsTextEditor();
MOZ_ASSERT(textEditor);
bool enabled = false;
textEditor->CanPaste(nsIClipboard::kGlobalClipboard, &enabled);
aParams->AsCommandParams()->SetBool(STATE_ENABLED, enabled);
return NS_OK;
}
} // namespace mozilla
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