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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/Maybe.h"
#include "mozilla/MozPromise.h" // for mozilla::detail::Any
#include "mozilla/TextEditor.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Selection.h"
#include "nsCommandParams.h"
#include "nsIClipboard.h"
#include "nsIEditingSession.h"
#include "nsIPrincipal.h"
#include "nsISelectionController.h"
#include "nsITransferable.h"
#include "nsString.h"
#include "nsAString.h"
class nsISupports;
#define STATE_ENABLED "state_enabled"
#define STATE_ATTRIBUTE "state_attribute"
#define STATE_DATA "state_data"
namespace mozilla {
using detail::Any;
/******************************************************************************
* mozilla::EditorCommand
******************************************************************************/
NS_IMPL_ISUPPORTS(EditorCommand, nsIControllerCommand)
NS_IMETHODIMP
EditorCommand::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon, bool* aIsEnabled) {
if (NS_WARN_IF(!aCommandName) || NS_WARN_IF(!aIsEnabled)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
TextEditor* textEditor = editor ? editor->AsTextEditor() : nullptr;
*aIsEnabled = IsCommandEnabled(GetInternalCommand(aCommandName),
MOZ_KnownLive(textEditor));
return NS_OK;
}
NS_IMETHODIMP
EditorCommand::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aCommandName) || NS_WARN_IF(!aCommandRefCon)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_INVALID_ARG;
}
nsresult rv = DoCommand(GetInternalCommand(aCommandName),
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommand()");
return rv;
}
NS_IMETHODIMP
EditorCommand::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aCommandName) || NS_WARN_IF(!aCommandRefCon)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (NS_WARN_IF(!editor)) {
return NS_ERROR_INVALID_ARG;
}
nsCommandParams* params = aParams ? aParams->AsCommandParams() : nullptr;
Command command = GetInternalCommand(aCommandName, params);
EditorCommandParamType paramType = EditorCommand::GetParamType(command);
if (paramType == EditorCommandParamType::None) {
nsresult rv = DoCommandParam(
command, MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
if (Any(paramType & EditorCommandParamType::Bool)) {
if (Any(paramType & EditorCommandParamType::StateAttribute)) {
Maybe<bool> boolParam = Nothing();
if (params) {
ErrorResult error;
boolParam = Some(params->GetBool(STATE_ATTRIBUTE, error));
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
}
nsresult rv = DoCommandParam(
command, boolParam, MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
MOZ_ASSERT_UNREACHABLE("Unexpected state for bool");
return NS_ERROR_NOT_IMPLEMENTED;
}
// Special case for MultiStateCommandBase. It allows both CString and String
// in STATE_ATTRIBUTE and CString is preferred.
if (Any(paramType & EditorCommandParamType::CString) &&
Any(paramType & EditorCommandParamType::String)) {
if (!params) {
nsresult rv =
DoCommandParam(command, VoidString(),
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"Failed to do command from "
"nsIControllerCommand::DoCommandParams()");
return rv;
}
if (Any(paramType & EditorCommandParamType::StateAttribute)) {
nsCString cStringParam;
nsresult rv = params->GetCString(STATE_ATTRIBUTE, cStringParam);
if (NS_SUCCEEDED(rv)) {
NS_ConvertUTF8toUTF16 stringParam(cStringParam);
nsresult rv =
DoCommandParam(command, stringParam,
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"Failed to do command from "
"nsIControllerCommand::DoCommandParams()");
return rv;
}
nsString stringParam;
DebugOnly<nsresult> rvIgnored =
params->GetString(STATE_ATTRIBUTE, stringParam);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"Failed to get string from STATE_ATTRIBUTE");
rv = DoCommandParam(command, stringParam,
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"Failed to do command from "
"nsIControllerCommand::DoCommandParams()");
return rv;
}
MOZ_ASSERT_UNREACHABLE("Unexpected state for CString/String");
return NS_ERROR_NOT_IMPLEMENTED;
}
if (Any(paramType & EditorCommandParamType::CString)) {
if (!params) {
nsresult rv =
DoCommandParam(command, VoidCString(),
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
if (Any(paramType & EditorCommandParamType::StateAttribute)) {
nsCString cStringParam;
nsresult rv = params->GetCString(STATE_ATTRIBUTE, cStringParam);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = DoCommandParam(command, cStringParam,
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
MOZ_ASSERT_UNREACHABLE("Unexpected state for CString");
return NS_ERROR_NOT_IMPLEMENTED;
}
if (Any(paramType & EditorCommandParamType::String)) {
if (!params) {
nsresult rv =
DoCommandParam(command, VoidString(),
MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
nsString stringParam;
if (Any(paramType & EditorCommandParamType::StateAttribute)) {
nsresult rv = params->GetString(STATE_ATTRIBUTE, stringParam);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
} else if (Any(paramType & EditorCommandParamType::StateData)) {
nsresult rv = params->GetString(STATE_DATA, stringParam);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
} else {
MOZ_ASSERT_UNREACHABLE("Unexpected state for String");
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult rv = DoCommandParam(
command, stringParam, MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
if (Any(paramType & EditorCommandParamType::Transferable)) {
nsCOMPtr<nsITransferable> transferable;
if (params) {
nsCOMPtr<nsISupports> supports = params->GetISupports("transferable");
transferable = do_QueryInterface(supports);
}
nsresult rv = DoCommandParam(
command, transferable, MOZ_KnownLive(*editor->AsTextEditor()), nullptr);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"Failed to do command from nsIControllerCommand::DoCommandParams()");
return rv;
}
MOZ_ASSERT_UNREACHABLE("Unexpected param type");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
EditorCommand::GetCommandStateParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon) {
if (NS_WARN_IF(!aCommandName) || NS_WARN_IF(!aParams)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = do_QueryInterface(aCommandRefCon);
if (editor) {
return GetCommandStateParams(GetInternalCommand(aCommandName),
MOZ_KnownLive(*aParams->AsCommandParams()),
MOZ_KnownLive(editor->AsTextEditor()),
nullptr);
}
nsCOMPtr<nsIEditingSession> editingSession =
do_QueryInterface(aCommandRefCon);
if (editingSession) {
return GetCommandStateParams(GetInternalCommand(aCommandName),
MOZ_KnownLive(*aParams->AsCommandParams()),
nullptr, editingSession);
}
return GetCommandStateParams(GetInternalCommand(aCommandName),
MOZ_KnownLive(*aParams->AsCommandParams()),
nullptr, nullptr);
}
/******************************************************************************
* mozilla::UndoCommand
******************************************************************************/
StaticRefPtr<UndoCommand> UndoCommand::sInstance;
bool UndoCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable() && aTextEditor->CanUndo();
}
nsresult UndoCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.UndoAsAction(1, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "UndoAsAction() failed");
return rv;
}
nsresult UndoCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::RedoCommand
******************************************************************************/
StaticRefPtr<RedoCommand> RedoCommand::sInstance;
bool RedoCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable() && aTextEditor->CanRedo();
}
nsresult RedoCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.RedoAsAction(1, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "RedoAsAction() failed");
return rv;
}
nsresult RedoCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::CutCommand
******************************************************************************/
StaticRefPtr<CutCommand> CutCommand::sInstance;
bool CutCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable() &&
aTextEditor->IsCutCommandEnabled();
}
nsresult CutCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.CutAsAction(aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "CutAsAction() failed");
return rv;
}
nsresult CutCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::CutOrDeleteCommand
******************************************************************************/
StaticRefPtr<CutOrDeleteCommand> CutOrDeleteCommand::sInstance;
bool CutOrDeleteCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult CutOrDeleteCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
dom::Selection* selection = aTextEditor.GetSelection();
if (selection && selection->IsCollapsed()) {
nsresult rv = aTextEditor.DeleteSelectionAsAction(
nsIEditor::eNext, nsIEditor::eStrip, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "DeleteSelectionsAction() failed");
return rv;
}
nsresult rv = aTextEditor.CutAsAction(aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "CutAsAction() failed");
return rv;
}
nsresult CutOrDeleteCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::CopyCommand
******************************************************************************/
StaticRefPtr<CopyCommand> CopyCommand::sInstance;
bool CopyCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsCopyCommandEnabled();
}
nsresult CopyCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
// Shouldn't cause "beforeinput" event so that we don't need to specify
// the given principal.
return aTextEditor.Copy();
}
nsresult CopyCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::CopyOrDeleteCommand
******************************************************************************/
StaticRefPtr<CopyOrDeleteCommand> CopyOrDeleteCommand::sInstance;
bool CopyOrDeleteCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult CopyOrDeleteCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
dom::Selection* selection = aTextEditor.GetSelection();
if (selection && selection->IsCollapsed()) {
nsresult rv = aTextEditor.DeleteSelectionAsAction(
nsIEditor::eNextWord, nsIEditor::eStrip, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "DeleteSelectionAsAction() failed");
return rv;
}
// Shouldn't cause "beforeinput" event so that we don't need to specify
// the given principal.
nsresult rv = aTextEditor.Copy();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Copy() failed");
return rv;
}
nsresult CopyOrDeleteCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::PasteCommand
******************************************************************************/
StaticRefPtr<PasteCommand> PasteCommand::sInstance;
bool PasteCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable() &&
aTextEditor->CanPaste(nsIClipboard::kGlobalClipboard);
}
nsresult PasteCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.PasteAsAction(nsIClipboard::kGlobalClipboard, true,
aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "PasteAsAction() failed");
return rv;
}
nsresult PasteCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::PasteTransferableCommand
******************************************************************************/
StaticRefPtr<PasteTransferableCommand> PasteTransferableCommand::sInstance;
bool PasteTransferableCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable() &&
aTextEditor->CanPasteTransferable(nullptr);
}
nsresult PasteTransferableCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
return NS_ERROR_FAILURE;
}
nsresult PasteTransferableCommand::DoCommandParam(
Command aCommand, nsITransferable* aTransferableParam,
TextEditor& aTextEditor, nsIPrincipal* aPrincipal) const {
if (NS_WARN_IF(!aTransferableParam)) {
return NS_ERROR_INVALID_ARG;
}
nsresult rv =
aTextEditor.PasteTransferableAsAction(aTransferableParam, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "PasteTransferableAsAction() failed");
return rv;
}
nsresult PasteTransferableCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
if (NS_WARN_IF(!aTextEditor)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsISupports> supports = aParams.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;
}
return aParams.SetBool(STATE_ENABLED,
aTextEditor->CanPasteTransferable(trans));
}
/******************************************************************************
* mozilla::SwitchTextDirectionCommand
******************************************************************************/
StaticRefPtr<SwitchTextDirectionCommand> SwitchTextDirectionCommand::sInstance;
bool SwitchTextDirectionCommand::IsCommandEnabled(
Command aCommand, TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult SwitchTextDirectionCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.ToggleTextDirectionAsAction(aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"ToggleTextDirectionAsAction() failed");
return rv;
}
nsresult SwitchTextDirectionCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::DeleteCommand
******************************************************************************/
StaticRefPtr<DeleteCommand> DeleteCommand::sInstance;
bool DeleteCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
// 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.
bool isEnabled = aTextEditor->IsSelectionEditable();
if (aCommand == Command::Delete && isEnabled) {
return aTextEditor->CanDeleteSelection();
}
return isEnabled;
}
nsresult DeleteCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsIEditor::EDirection deleteDir = nsIEditor::eNone;
switch (aCommand) {
case Command::Delete:
// 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;
break;
case Command::DeleteCharForward:
deleteDir = nsIEditor::eNext;
break;
case Command::DeleteCharBackward:
deleteDir = nsIEditor::ePrevious;
break;
case Command::DeleteWordBackward:
deleteDir = nsIEditor::ePreviousWord;
break;
case Command::DeleteWordForward:
deleteDir = nsIEditor::eNextWord;
break;
case Command::DeleteToBeginningOfLine:
deleteDir = nsIEditor::eToBeginningOfLine;
break;
case Command::DeleteToEndOfLine:
deleteDir = nsIEditor::eToEndOfLine;
break;
default:
MOZ_CRASH("Unrecognized nsDeleteCommand");
}
nsresult rv = aTextEditor.DeleteSelectionAsAction(
deleteDir, nsIEditor::eStrip, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "DeleteSelectionAsAction() failed");
return rv;
}
nsresult DeleteCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::SelectAllCommand
******************************************************************************/
StaticRefPtr<SelectAllCommand> SelectAllCommand::sInstance;
bool SelectAllCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
// You can always select all, unless the selection is editable,
// and the editable region is empty!
if (!aTextEditor) {
return true;
}
// You can select all if there is an editor which is non-empty
return !aTextEditor->IsEmpty();
}
nsresult SelectAllCommand::DoCommand(Command aCommand, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
// Shouldn't cause "beforeinput" event so that we don't need to specify
// aPrincipal.
return aTextEditor.SelectAll();
}
nsresult SelectAllCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::SelectionMoveCommands
******************************************************************************/
StaticRefPtr<SelectionMoveCommands> SelectionMoveCommands::sInstance;
bool SelectionMoveCommands::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
static const struct ScrollCommand {
Command mReverseScroll;
Command mForwardScroll;
nsresult (NS_STDCALL nsISelectionController::*scroll)(bool);
} scrollCommands[] = {{Command::ScrollTop, Command::ScrollBottom,
&nsISelectionController::CompleteScroll},
{Command::ScrollPageUp, Command::ScrollPageDown,
&nsISelectionController::ScrollPage},
{Command::ScrollLineUp, Command::ScrollLineDown,
&nsISelectionController::ScrollLine}};
static const struct MoveCommand {
Command mReverseMove;
Command mForwardMove;
Command mReverseSelect;
Command mForwardSelect;
nsresult (NS_STDCALL nsISelectionController::*move)(bool, bool);
} moveCommands[] = {
{Command::CharPrevious, Command::CharNext, Command::SelectCharPrevious,
Command::SelectCharNext, &nsISelectionController::CharacterMove},
{Command::LinePrevious, Command::LineNext, Command::SelectLinePrevious,
Command::SelectLineNext, &nsISelectionController::LineMove},
{Command::WordPrevious, Command::WordNext, Command::SelectWordPrevious,
Command::SelectWordNext, &nsISelectionController::WordMove},
{Command::BeginLine, Command::EndLine, Command::SelectBeginLine,
Command::SelectEndLine, &nsISelectionController::IntraLineMove},
{Command::MovePageUp, Command::MovePageDown, Command::SelectPageUp,
Command::SelectPageDown, &nsISelectionController::PageMove},
{Command::MoveTop, Command::MoveBottom, Command::SelectTop,
Command::SelectBottom, &nsISelectionController::CompleteMove}};
static const struct PhysicalCommand {
Command mMove;
Command mSelect;
int16_t direction;
int16_t amount;
} physicalCommands[] = {
{Command::MoveLeft, Command::SelectLeft, nsISelectionController::MOVE_LEFT,
0},
{Command::MoveRight, Command::SelectRight,
nsISelectionController::MOVE_RIGHT, 0},
{Command::MoveUp, Command::SelectUp, nsISelectionController::MOVE_UP, 0},
{Command::MoveDown, Command::SelectDown, nsISelectionController::MOVE_DOWN,
0},
{Command::MoveLeft2, Command::SelectLeft2,
nsISelectionController::MOVE_LEFT, 1},
{Command::MoveRight2, Command::SelectRight2,
nsISelectionController::MOVE_RIGHT, 1},
{Command::MoveUp2, Command::SelectUp2, nsISelectionController::MOVE_UP, 1},
{Command::MoveDown2, Command::SelectDown2,
nsISelectionController::MOVE_DOWN, 1}};
nsresult SelectionMoveCommands::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
RefPtr<Document> document = aTextEditor.GetDocument();
if (document) {
// Most of the commands below (possibly all of them) need layout to
// be up to date.
document->FlushPendingNotifications(FlushType::Layout);
}
nsCOMPtr<nsISelectionController> selectionController =
aTextEditor.GetSelectionController();
if (NS_WARN_IF(!selectionController)) {
return NS_ERROR_FAILURE;
}
// scroll commands
for (size_t i = 0; i < ArrayLength(scrollCommands); i++) {
const ScrollCommand& cmd = scrollCommands[i];
if (aCommand == cmd.mReverseScroll) {
return (selectionController->*(cmd.scroll))(false);
}
if (aCommand == cmd.mForwardScroll) {
return (selectionController->*(cmd.scroll))(true);
}
}
// caret movement/selection commands
for (size_t i = 0; i < ArrayLength(moveCommands); i++) {
const MoveCommand& cmd = moveCommands[i];
if (aCommand == cmd.mReverseMove) {
return (selectionController->*(cmd.move))(false, false);
}
if (aCommand == cmd.mForwardMove) {
return (selectionController->*(cmd.move))(true, false);
}
if (aCommand == cmd.mReverseSelect) {
return (selectionController->*(cmd.move))(false, true);
}
if (aCommand == cmd.mForwardSelect) {
return (selectionController->*(cmd.move))(true, true);
}
}
// physical-direction movement/selection
for (size_t i = 0; i < ArrayLength(physicalCommands); i++) {
const PhysicalCommand& cmd = physicalCommands[i];
if (aCommand == cmd.mMove) {
return selectionController->PhysicalMove(cmd.direction, cmd.amount,
false);
}
if (aCommand == cmd.mSelect) {
return selectionController->PhysicalMove(cmd.direction, cmd.amount, true);
}
}
return NS_ERROR_FAILURE;
}
nsresult SelectionMoveCommands::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::InsertPlaintextCommand
******************************************************************************/
StaticRefPtr<InsertPlaintextCommand> InsertPlaintextCommand::sInstance;
bool InsertPlaintextCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult InsertPlaintextCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
// 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 =
aTextEditor.InsertTextAsAction(EmptyString(), aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "InsertTextAsAction() failed");
return NS_OK;
}
nsresult InsertPlaintextCommand::DoCommandParam(
Command aCommand, const nsAString& aStringParam, TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
if (NS_WARN_IF(aStringParam.IsVoid())) {
return NS_ERROR_INVALID_ARG;
}
// 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 =
aTextEditor.InsertTextAsAction(aStringParam, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "InsertTextAsAction() failed");
return NS_OK;
}
nsresult InsertPlaintextCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::InsertParagraphCommand
******************************************************************************/
StaticRefPtr<InsertParagraphCommand> InsertParagraphCommand::sInstance;
bool InsertParagraphCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor || !aTextEditor->AsHTMLEditor()) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult InsertParagraphCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
HTMLEditor* htmlEditor = aTextEditor.AsHTMLEditor();
if (!htmlEditor) {
return NS_OK; // Do nothing for now.
}
nsresult rv =
MOZ_KnownLive(htmlEditor)->InsertParagraphSeparatorAsAction(aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"InsertParagraphSeparatorAsAction() failed");
return rv;
}
nsresult InsertParagraphCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::InsertLineBreakCommand
******************************************************************************/
StaticRefPtr<InsertLineBreakCommand> InsertLineBreakCommand::sInstance;
bool InsertLineBreakCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor || !aTextEditor->AsHTMLEditor()) {
return false;
}
return aTextEditor->IsSelectionEditable();
}
nsresult InsertLineBreakCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
HTMLEditor* htmlEditor = aTextEditor.AsHTMLEditor();
if (!htmlEditor) {
return NS_ERROR_FAILURE;
}
nsresult rv = MOZ_KnownLive(htmlEditor)->InsertLineBreakAsAction(aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "InsertLineBreakAsAction() failed");
return rv;
}
nsresult InsertLineBreakCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
return aParams.SetBool(STATE_ENABLED,
IsCommandEnabled(aCommand, aTextEditor));
}
/******************************************************************************
* mozilla::PasteQuotationCommand
******************************************************************************/
StaticRefPtr<PasteQuotationCommand> PasteQuotationCommand::sInstance;
bool PasteQuotationCommand::IsCommandEnabled(Command aCommand,
TextEditor* aTextEditor) const {
if (!aTextEditor) {
return false;
}
return !aTextEditor->IsSingleLineEditor() &&
aTextEditor->CanPaste(nsIClipboard::kGlobalClipboard);
}
nsresult PasteQuotationCommand::DoCommand(Command aCommand,
TextEditor& aTextEditor,
nsIPrincipal* aPrincipal) const {
nsresult rv = aTextEditor.PasteAsQuotationAsAction(
nsIClipboard::kGlobalClipboard, true, aPrincipal);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "PasteAsQuotationAsAction() failed");
return rv;
}
nsresult PasteQuotationCommand::GetCommandStateParams(
Command aCommand, nsCommandParams& aParams, TextEditor* aTextEditor,
nsIEditingSession* aEditingSession) const {
if (!aTextEditor) {
return NS_OK;
}
aParams.SetBool(STATE_ENABLED,
aTextEditor->CanPaste(nsIClipboard::kGlobalClipboard));
return NS_OK;
}
} // namespace mozilla
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