diff options
Diffstat (limited to 'editor/libeditor/EditorCommands.cpp')
| -rw-r--r-- | editor/libeditor/EditorCommands.cpp | 1169 |
1 files changed, 1169 insertions, 0 deletions
diff --git a/editor/libeditor/EditorCommands.cpp b/editor/libeditor/EditorCommands.cpp new file mode 100644 index 0000000000..2bb32e2aae --- /dev/null +++ b/editor/libeditor/EditorCommands.cpp @@ -0,0 +1,1169 @@ +/* -*- 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 "mozFlushType.h" +#include "mozilla/ArrayUtils.h" +#include "mozilla/Assertions.h" +#include "mozilla/TextEditor.h" +#include "nsCOMPtr.h" +#include "nsCRT.h" +#include "nsDebug.h" +#include "nsError.h" +#include "nsIClipboard.h" +#include "nsICommandParams.h" +#include "nsID.h" +#include "nsIDOMDocument.h" +#include "nsIDocument.h" +#include "nsIEditor.h" +#include "nsIEditorMailSupport.h" +#include "nsIPlaintextEditor.h" +#include "nsISelection.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) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool isEnabled, isEditable = false; + nsresult rv = editor->GetIsSelectionEditable(&isEditable); + NS_ENSURE_SUCCESS(rv, rv); + if (isEditable) + return editor->CanUndo(&isEnabled, aIsEnabled); + } + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +UndoCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->Undo(1); + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::RedoCommand + ******************************************************************************/ + +NS_IMETHODIMP +RedoCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool isEnabled, isEditable = false; + nsresult rv = editor->GetIsSelectionEditable(&isEditable); + NS_ENSURE_SUCCESS(rv, rv); + if (isEditable) + return editor->CanRedo(&isEnabled, aIsEnabled); + } + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +RedoCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->Redo(1); + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::ClearUndoCommand + ******************************************************************************/ + +NS_IMETHODIMP +ClearUndoCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +ClearUndoCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, NS_ERROR_NOT_IMPLEMENTED); + + editor->EnableUndo(false); // Turning off undo clears undo/redo stacks. + editor->EnableUndo(true); // This re-enables undo/redo. + + 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->SetBooleanValue(STATE_ENABLED, enabled); +} + +/****************************************************************************** + * mozilla::CutCommand + ******************************************************************************/ + +NS_IMETHODIMP +CutCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool isEditable = false; + nsresult rv = editor->GetIsSelectionEditable(&isEditable); + NS_ENSURE_SUCCESS(rv, rv); + if (isEditable) + return editor->CanCut(aIsEnabled); + } + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +CutCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->Cut(); + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::CutOrDeleteCommand + ******************************************************************************/ + +NS_IMETHODIMP +CutOrDeleteCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +CutOrDeleteCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + nsCOMPtr<nsISelection> selection; + nsresult rv = editor->GetSelection(getter_AddRefs(selection)); + if (NS_SUCCEEDED(rv) && selection && selection->Collapsed()) { + return editor->DeleteSelection(nsIEditor::eNext, nsIEditor::eStrip); + } + return editor->Cut(); + } + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::CopyCommand + ******************************************************************************/ + +NS_IMETHODIMP +CopyCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->CanCopy(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +CopyCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->Copy(); + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::CopyOrDeleteCommand + ******************************************************************************/ + +NS_IMETHODIMP +CopyOrDeleteCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +CopyOrDeleteCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + nsCOMPtr<nsISelection> selection; + nsresult rv = editor->GetSelection(getter_AddRefs(selection)); + if (NS_SUCCEEDED(rv) && selection && selection->Collapsed()) { + return editor->DeleteSelection(nsIEditor::eNextWord, nsIEditor::eStrip); + } + return editor->Copy(); + } + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::CopyAndCollapseToEndCommand + ******************************************************************************/ + +NS_IMETHODIMP +CopyAndCollapseToEndCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->CanCopy(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +CopyAndCollapseToEndCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + nsresult rv = editor->Copy(); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsISelection> selection; + rv = editor->GetSelection(getter_AddRefs(selection)); + if (NS_SUCCEEDED(rv) && selection) { + selection->CollapseToEnd(); + } + return rv; + } + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::PasteCommand + ******************************************************************************/ + +NS_IMETHODIMP +PasteCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool isEditable = false; + nsresult rv = editor->GetIsSelectionEditable(&isEditable); + NS_ENSURE_SUCCESS(rv, rv); + if (isEditable) + return editor->CanPaste(nsIClipboard::kGlobalClipboard, aIsEnabled); + } + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +PasteCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, NS_ERROR_FAILURE); + + return editor->Paste(nsIClipboard::kGlobalClipboard); +} + +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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::PasteTransferableCommand + ******************************************************************************/ + +NS_IMETHODIMP +PasteTransferableCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool isEditable = false; + nsresult rv = editor->GetIsSelectionEditable(&isEditable); + NS_ENSURE_SUCCESS(rv, rv); + if (isEditable) + return editor->CanPasteTransferable(nullptr, aIsEnabled); + } + + *aIsEnabled = false; + 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); + NS_ENSURE_TRUE(editor, NS_ERROR_FAILURE); + + nsCOMPtr<nsISupports> supports; + aParams->GetISupportsValue("transferable", getter_AddRefs(supports)); + NS_ENSURE_TRUE(supports, NS_ERROR_FAILURE); + + nsCOMPtr<nsITransferable> trans = do_QueryInterface(supports); + NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE); + + return editor->PasteTransferable(trans); +} + +NS_IMETHODIMP +PasteTransferableCommand::GetCommandStateParams(const char* aCommandName, + nsICommandParams* aParams, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, NS_ERROR_FAILURE); + + nsCOMPtr<nsITransferable> trans; + + nsCOMPtr<nsISupports> supports; + aParams->GetISupportsValue("transferable", getter_AddRefs(supports)); + if (supports) { + trans = do_QueryInterface(supports); + NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE); + } + + bool canPaste; + nsresult rv = editor->CanPasteTransferable(trans, &canPaste); + NS_ENSURE_SUCCESS(rv, rv); + + return aParams->SetBooleanValue(STATE_ENABLED, canPaste); +} + +/****************************************************************************** + * mozilla::SwitchTextDirectionCommand + ******************************************************************************/ + +NS_IMETHODIMP +SwitchTextDirectionCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +SwitchTextDirectionCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, NS_ERROR_FAILURE); + + return editor->SwitchTextDirection(); +} + +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->SetBooleanValue(STATE_ENABLED, canSwitchTextDirection); +} + +/****************************************************************************** + * mozilla::DeleteCommand + ******************************************************************************/ + +NS_IMETHODIMP +DeleteCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + *aIsEnabled = false; + + if (!editor) { + return NS_OK; + } + + // 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. + nsresult rv = editor->GetIsSelectionEditable(aIsEnabled); + NS_ENSURE_SUCCESS(rv, rv); + + if (!nsCRT::strcmp("cmd_delete", aCommandName) && *aIsEnabled) { + rv = editor->CanDelete(aIsEnabled); + NS_ENSURE_SUCCESS(rv, rv); + } + + return NS_OK; +} + +NS_IMETHODIMP +DeleteCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, 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"); + } + + return editor->DeleteSelection(deleteDir, nsIEditor::eStrip); +} + +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->SetBooleanValue(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; + bool docIsEmpty; + + // you can select all if there is an editor which is non-empty + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + rv = editor->GetDocumentIsEmpty(&docIsEmpty); + NS_ENSURE_SUCCESS(rv, rv); + *aIsEnabled = !docIsEmpty; + } + + return rv; +} + +NS_IMETHODIMP +SelectAllCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->SelectAll(); + + return NS_ERROR_FAILURE; +} + +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->SetBooleanValue(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) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + 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); + NS_ENSURE_TRUE(editor, NS_ERROR_FAILURE); + + nsCOMPtr<nsIDOMDocument> domDoc; + editor->GetDocument(getter_AddRefs(domDoc)); + nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc); + if (doc) { + // Most of the commands below (possibly all of them) need layout to + // be up to date. + doc->FlushPendingNotifications(Flush_Layout); + } + + nsCOMPtr<nsISelectionController> selCont; + nsresult rv = editor->GetSelectionController(getter_AddRefs(selCont)); + NS_ENSURE_SUCCESS(rv, rv); + NS_ENSURE_TRUE(selCont, 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 (selCont->*(cmd.scroll))(false); + } else if (!nsCRT::strcmp(aCommandName, cmd.forwardScroll)) { + return (selCont->*(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 (selCont->*(cmd.move))(false, false); + } else if (!nsCRT::strcmp(aCommandName, cmd.forwardMove)) { + return (selCont->*(cmd.move))(true, false); + } else if (!nsCRT::strcmp(aCommandName, cmd.reverseSelect)) { + return (selCont->*(cmd.move))(false, true); + } else if (!nsCRT::strcmp(aCommandName, cmd.forwardSelect)) { + return (selCont->*(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 selCont->PhysicalMove(cmd.direction, cmd.amount, false); + } else if (!nsCRT::strcmp(aCommandName, cmd.select)) { + return selCont->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->SetBooleanValue(STATE_ENABLED, canUndo); +} + +/****************************************************************************** + * mozilla::InsertPlaintextCommand + ******************************************************************************/ + +NS_IMETHODIMP +InsertPlaintextCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) + return editor->GetIsSelectionEditable(aIsEnabled); + + *aIsEnabled = false; + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +InsertPlaintextCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +InsertPlaintextCommand::DoCommandParams(const char* aCommandName, + nsICommandParams* aParams, + nsISupports* aCommandRefCon) +{ + NS_ENSURE_ARG_POINTER(aParams); + + nsCOMPtr<nsIPlaintextEditor> editor = do_QueryInterface(aCommandRefCon); + NS_ENSURE_TRUE(editor, NS_ERROR_NOT_IMPLEMENTED); + + // Get text to insert from command params + nsAutoString text; + nsresult rv = aParams->GetStringValue(STATE_DATA, text); + NS_ENSURE_SUCCESS(rv, rv); + + if (!text.IsEmpty()) + return editor->InsertText(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->SetBooleanValue(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_NOT_IMPLEMENTED; + } + + return editor->GetIsSelectionEditable(aIsEnabled); +} + +NS_IMETHODIMP +InsertParagraphCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIPlaintextEditor> editor = do_QueryInterface(aCommandRefCon); + if (NS_WARN_IF(!editor)) { + return NS_ERROR_NOT_IMPLEMENTED; + } + + TextEditor* textEditor = static_cast<TextEditor*>(editor.get()); + + return textEditor->TypedText(EmptyString(), TextEditor::eTypedBreak); +} + +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->SetBooleanValue(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_NOT_IMPLEMENTED; + } + + return editor->GetIsSelectionEditable(aIsEnabled); +} + +NS_IMETHODIMP +InsertLineBreakCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIPlaintextEditor> editor = do_QueryInterface(aCommandRefCon); + if (NS_WARN_IF(!editor)) { + return NS_ERROR_NOT_IMPLEMENTED; + } + + TextEditor* textEditor = static_cast<TextEditor*>(editor.get()); + + return textEditor->TypedText(EmptyString(), TextEditor::eTypedBR); +} + +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->SetBooleanValue(STATE_ENABLED, aIsEnabled); +} + +/****************************************************************************** + * mozilla::PasteQuotationCommand + ******************************************************************************/ + +NS_IMETHODIMP +PasteQuotationCommand::IsCommandEnabled(const char* aCommandName, + nsISupports* aCommandRefCon, + bool* aIsEnabled) +{ + NS_ENSURE_ARG_POINTER(aIsEnabled); + + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + nsCOMPtr<nsIEditorMailSupport> mailEditor = do_QueryInterface(aCommandRefCon); + if (editor && mailEditor) { + uint32_t flags; + editor->GetFlags(&flags); + if (!(flags & nsIPlaintextEditor::eEditorSingleLineMask)) + return editor->CanPaste(nsIClipboard::kGlobalClipboard, aIsEnabled); + } + + *aIsEnabled = false; + return NS_OK; +} + +NS_IMETHODIMP +PasteQuotationCommand::DoCommand(const char* aCommandName, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditorMailSupport> mailEditor = do_QueryInterface(aCommandRefCon); + if (mailEditor) + return mailEditor->PasteAsQuotation(nsIClipboard::kGlobalClipboard); + + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +PasteQuotationCommand::DoCommandParams(const char* aCommandName, + nsICommandParams* aParams, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditorMailSupport> mailEditor = do_QueryInterface(aCommandRefCon); + if (mailEditor) + return mailEditor->PasteAsQuotation(nsIClipboard::kGlobalClipboard); + + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +PasteQuotationCommand::GetCommandStateParams(const char* aCommandName, + nsICommandParams* aParams, + nsISupports* aCommandRefCon) +{ + nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon); + if (editor) { + bool enabled = false; + editor->CanPaste(nsIClipboard::kGlobalClipboard, &enabled); + aParams->SetBooleanValue(STATE_ENABLED, enabled); + } + + return NS_OK; +} + +} // namespace mozilla |