webeditorclient.mm

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer. 
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution. 
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "WebEditorClient.h"

#import "DOMHTMLInputElementInternal.h"
#import "DOMHTMLTextAreaElementInternal.h"
#import "DOMRangeInternal.h"
#import "WebArchive.h"
#import "WebDataSourceInternal.h"
#import "WebDocument.h"
#import "WebEditingDelegatePrivate.h"
#import "WebFormDelegate.h"
#import "WebFrameInternal.h"
#import "WebHTMLView.h"
#import "WebHTMLViewInternal.h"
#import "WebKitLogging.h"
#import "WebKitVersionChecks.h"
#import "WebLocalizableStrings.h"
#import "WebNSURLExtras.h"
#import "WebViewInternal.h"
#import <WebCore/Document.h>
#import <WebCore/EditAction.h>
#import <WebCore/EditCommand.h>
#import <WebCore/KeyboardEvent.h>
#import <WebCore/LegacyWebArchive.h>
#import <WebCore/PlatformKeyboardEvent.h>
#import <WebCore/PlatformString.h>
#import <WebCore/WebCoreObjCExtras.h>
#import <runtime/InitializeThreading.h>
#import <wtf/PassRefPtr.h>

using namespace WebCore;
using namespace WTF;

EditorInsertAction core(WebViewInsertAction);
WebViewInsertAction kit(EditorInsertAction);

EditorInsertAction core(WebViewInsertAction kitAction)
{
    return static_cast<EditorInsertAction>(kitAction);
}

WebViewInsertAction kit(EditorInsertAction coreAction)
{
    return static_cast<WebViewInsertAction>(coreAction);
}

#ifdef BUILDING_ON_TIGER
@interface NSSpellChecker (NotYetPublicMethods)
- (void)learnWord:(NSString *)word;
@end
#endif

@interface WebEditCommand : NSObject
{
    RefPtr<EditCommand> m_command;   
}

+ (WebEditCommand *)commandWithEditCommand:(PassRefPtr<EditCommand>)command;
- (EditCommand *)command;

@end

@implementation WebEditCommand

+ (void)initialize
{
    JSC::initializeThreading();
#ifndef BUILDING_ON_TIGER
    WebCoreObjCFinalizeOnMainThread(self);
#endif
}

- (id)initWithEditCommand:(PassRefPtr<EditCommand>)command
{
    ASSERT(command);
    [super init];
    m_command = command;
    return self;
}

- (void)dealloc
{
    if (WebCoreObjCScheduleDeallocateOnMainThread([WebEditCommand class], self))
        return;

    [super dealloc];
}

- (void)finalize
{
    ASSERT_MAIN_THREAD();

    [super finalize];
}

+ (WebEditCommand *)commandWithEditCommand:(PassRefPtr<EditCommand>)command
{
    return [[[WebEditCommand alloc] initWithEditCommand:command] autorelease];
}

- (EditCommand *)command
{
    return m_command.get();
}

@end

@interface WebEditorUndoTarget : NSObject
{
}

- (void)undoEditing:(id)arg;
- (void)redoEditing:(id)arg;

@end

@implementation WebEditorUndoTarget

- (void)undoEditing:(id)arg
{
    ASSERT([arg isKindOfClass:[WebEditCommand class]]);
    [arg command]->unapply();
}

- (void)redoEditing:(id)arg
{
    ASSERT([arg isKindOfClass:[WebEditCommand class]]);
    [arg command]->reapply();
}

@end

void WebEditorClient::pageDestroyed()
{
    delete this;
}

WebEditorClient::WebEditorClient(WebView *webView)
    : m_webView(webView)
    , m_undoTarget([[[WebEditorUndoTarget alloc] init] autorelease])
    , m_haveUndoRedoOperations(false)
{
}

bool WebEditorClient::isContinuousSpellCheckingEnabled()
{
    return [m_webView isContinuousSpellCheckingEnabled];
}

void WebEditorClient::toggleContinuousSpellChecking()
{
    [m_webView toggleContinuousSpellChecking:nil];
}

bool WebEditorClient::isGrammarCheckingEnabled()
{
#ifdef BUILDING_ON_TIGER
    return false;
#else
    return [m_webView isGrammarCheckingEnabled];
#endif
}

void WebEditorClient::toggleGrammarChecking()
{
#ifndef BUILDING_ON_TIGER
    [m_webView toggleGrammarChecking:nil];
#endif
}

int WebEditorClient::spellCheckerDocumentTag()
{
    return [m_webView spellCheckerDocumentTag];
}

bool WebEditorClient::isEditable()
{
    return [m_webView isEditable];
}

bool WebEditorClient::shouldDeleteRange(Range* range)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
        shouldDeleteDOMRange:kit(range)];
}

bool WebEditorClient::shouldShowDeleteInterface(HTMLElement* element)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
        shouldShowDeleteInterfaceForElement:kit(element)];
}

bool WebEditorClient::smartInsertDeleteEnabled()
{
    return [m_webView smartInsertDeleteEnabled];
}

bool WebEditorClient::isSelectTrailingWhitespaceEnabled()
{
    return [m_webView isSelectTrailingWhitespaceEnabled];
}

bool WebEditorClient::shouldApplyStyle(CSSStyleDeclaration* style, Range* range)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
        shouldApplyStyle:kit(style) toElementsInDOMRange:kit(range)];
}

bool WebEditorClient::shouldMoveRangeAfterDelete(Range* range, Range* rangeToBeReplaced)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
        shouldMoveRangeAfterDelete:kit(range) replacingRange:kit(rangeToBeReplaced)];
}

bool WebEditorClient::shouldBeginEditing(Range* range)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
        shouldBeginEditingInDOMRange:kit(range)];

    return false;
}

bool WebEditorClient::shouldEndEditing(Range* range)
{
    return [[m_webView _editingDelegateForwarder] webView:m_webView
                             shouldEndEditingInDOMRange:kit(range)];
}

bool WebEditorClient::shouldInsertText(const String& text, Range* range, EditorInsertAction action)
{
    WebView* webView = m_webView;
    return [[webView _editingDelegateForwarder] webView:webView shouldInsertText:text replacingDOMRange:kit(range) givenAction:kit(action)];
}

bool WebEditorClient::shouldChangeSelectedRange(Range* fromRange, Range* toRange, EAffinity selectionAffinity, bool stillSelecting)
{
    return [m_webView _shouldChangeSelectedDOMRange:kit(fromRange) toDOMRange:kit(toRange) affinity:kit(selectionAffinity) stillSelecting:stillSelecting];
}

void WebEditorClient::didBeginEditing()
{
    [[NSNotificationCenter defaultCenter] postNotificationName:WebViewDidBeginEditingNotification object:m_webView];
}

void WebEditorClient::respondToChangedContents()
{
    NSView <WebDocumentView> *view = [[[m_webView selectedFrame] frameView] documentView];
    if ([view isKindOfClass:[WebHTMLView class]])
        [(WebHTMLView *)view _updateFontPanel];
    [[NSNotificationCenter defaultCenter] postNotificationName:WebViewDidChangeNotification object:m_webView];    
}

void WebEditorClient::respondToChangedSelection()
{
    NSView <WebDocumentView> *view = [[[m_webView selectedFrame] frameView] documentView];
    if ([view isKindOfClass:[WebHTMLView class]])
        [(WebHTMLView *)view _selectionChanged];

    // FIXME: This quirk is needed due to <rdar://problem/5009625> - We can phase it out once Aperture can adopt the new behavior on their end
    if (!WebKitLinkedOnOrAfter(WEBKIT_FIRST_VERSION_WITHOUT_APERTURE_QUIRK) && [[[NSBundle mainBundle] bundleIdentifier] isEqualToString:@"com.apple.Aperture"])
        return;

    [[NSNotificationCenter defaultCenter] postNotificationName:WebViewDidChangeSelectionNotification object:m_webView];
}

void WebEditorClient::didEndEditing()
{
    [[NSNotificationCenter defaultCenter] postNotificationName:WebViewDidEndEditingNotification object:m_webView];
}

void WebEditorClient::didWriteSelectionToPasteboard()
{
    [[m_webView _editingDelegateForwarder] webView:m_webView didWriteSelectionToPasteboard:[NSPasteboard generalPasteboard]];
}

void WebEditorClient::didSetSelectionTypesForPasteboard()
{
    [[m_webView _editingDelegateForwarder] webView:m_webView didSetSelectionTypesForPasteboard:[NSPasteboard generalPasteboard]];
}

NSString* WebEditorClient::userVisibleString(NSURL *URL)
{
    return [URL _web_userVisibleString];
}

#ifdef BUILDING_ON_TIGER
NSArray* WebEditorClient::pasteboardTypesForSelection(Frame* selectedFrame)
{
    WebFrame* frame = kit(selectedFrame);
    return [[[frame frameView] documentView] pasteboardTypesForSelection];
}
#endif

bool WebEditorClient::shouldInsertNode(Node *node, Range* replacingRange, EditorInsertAction givenAction)
{ 
    return [[m_webView _editingDelegateForwarder] webView:m_webView shouldInsertNode:kit(node) replacingDOMRange:kit(replacingRange) givenAction:(WebViewInsertAction)givenAction];
}

static NSString* undoNameForEditAction(EditAction editAction)
{
    switch (editAction) {
        case EditActionUnspecified: return nil;
        case EditActionSetColor: return UI_STRING_KEY("Set Color", "Set Color (Undo action name)", "Undo action name");
        case EditActionSetBackgroundColor: return UI_STRING_KEY("Set Background Color", "Set Background Color (Undo action name)", "Undo action name");
        case EditActionTurnOffKerning: return UI_STRING_KEY("Turn Off Kerning", "Turn Off Kerning (Undo action name)", "Undo action name");
        case EditActionTightenKerning: return UI_STRING_KEY("Tighten Kerning", "Tighten Kerning (Undo action name)", "Undo action name");
        case EditActionLoosenKerning: return UI_STRING_KEY("Loosen Kerning", "Loosen Kerning (Undo action name)", "Undo action name");
        case EditActionUseStandardKerning: return UI_STRING_KEY("Use Standard Kerning", "Use Standard Kerning (Undo action name)", "Undo action name");
        case EditActionTurnOffLigatures: return UI_STRING_KEY("Turn Off Ligatures", "Turn Off Ligatures (Undo action name)", "Undo action name");
        case EditActionUseStandardLigatures: return UI_STRING_KEY("Use Standard Ligatures", "Use Standard Ligatures (Undo action name)", "Undo action name");
        case EditActionUseAllLigatures: return UI_STRING_KEY("Use All Ligatures", "Use All Ligatures (Undo action name)", "Undo action name");
        case EditActionRaiseBaseline: return UI_STRING_KEY("Raise Baseline", "Raise Baseline (Undo action name)", "Undo action name");
        case EditActionLowerBaseline: return UI_STRING_KEY("Lower Baseline", "Lower Baseline (Undo action name)", "Undo action name");
        case EditActionSetTraditionalCharacterShape: return UI_STRING_KEY("Set Traditional Character Shape", "Set Traditional Character Shape (Undo action name)", "Undo action name");
        case EditActionSetFont: return UI_STRING_KEY("Set Font", "Set Font (Undo action name)", "Undo action name");
        case EditActionChangeAttributes: return UI_STRING_KEY("Change Attributes", "Change Attributes (Undo action name)", "Undo action name");
        case EditActionAlignLeft: return UI_STRING_KEY("Align Left", "Align Left (Undo action name)", "Undo action name");
        case EditActionAlignRight: return UI_STRING_KEY("Align Right", "Align Right (Undo action name)", "Undo action name");
        case EditActionCenter: return UI_STRING_KEY("Center", "Center (Undo action name)", "Undo action name");