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

        case EditActionJustify: return UI_STRING_KEY("Justify", "Justify (Undo action name)", "Undo action name");
        case EditActionSetWritingDirection: return UI_STRING_KEY("Set Writing Direction", "Set Writing Direction (Undo action name)", "Undo action name");
        case EditActionSubscript: return UI_STRING_KEY("Subscript", "Subscript (Undo action name)", "Undo action name");
        case EditActionSuperscript: return UI_STRING_KEY("Superscript", "Superscript (Undo action name)", "Undo action name");
        case EditActionUnderline: return UI_STRING_KEY("Underline", "Underline (Undo action name)", "Undo action name");
        case EditActionOutline: return UI_STRING_KEY("Outline", "Outline (Undo action name)", "Undo action name");
        case EditActionUnscript: return UI_STRING_KEY("Unscript", "Unscript (Undo action name)", "Undo action name");
        case EditActionDrag: return UI_STRING_KEY("Drag", "Drag (Undo action name)", "Undo action name");
        case EditActionCut: return UI_STRING_KEY("Cut", "Cut (Undo action name)", "Undo action name");
        case EditActionPaste: return UI_STRING_KEY("Paste", "Paste (Undo action name)", "Undo action name");
        case EditActionPasteFont: return UI_STRING_KEY("Paste Font", "Paste Font (Undo action name)", "Undo action name");
        case EditActionPasteRuler: return UI_STRING_KEY("Paste Ruler", "Paste Ruler (Undo action name)", "Undo action name");
        case EditActionTyping: return UI_STRING_KEY("Typing", "Typing (Undo action name)", "Undo action name");
        case EditActionCreateLink: return UI_STRING_KEY("Create Link", "Create Link (Undo action name)", "Undo action name");
        case EditActionUnlink: return UI_STRING_KEY("Unlink", "Unlink (Undo action name)", "Undo action name");
        case EditActionInsertList: return UI_STRING_KEY("Insert List", "Insert List (Undo action name)", "Undo action name");
        case EditActionFormatBlock: return UI_STRING_KEY("Formatting", "Format Block (Undo action name)", "Undo action name");
        case EditActionIndent: return UI_STRING_KEY("Indent", "Indent (Undo action name)", "Undo action name");
        case EditActionOutdent: return UI_STRING_KEY("Outdent", "Outdent (Undo action name)", "Undo action name");
    }
    return nil;
}

void WebEditorClient::registerCommandForUndoOrRedo(PassRefPtr<EditCommand> cmd, bool isRedo)
{
    ASSERT(cmd);
    
    NSUndoManager *undoManager = [m_webView undoManager];
    NSString *actionName = undoNameForEditAction(cmd->editingAction());
    WebEditCommand *command = [WebEditCommand commandWithEditCommand:cmd];
    [undoManager registerUndoWithTarget:m_undoTarget.get() selector:(isRedo ? @selector(redoEditing:) : @selector(undoEditing:)) object:command];
    if (actionName)
        [undoManager setActionName:actionName];
    m_haveUndoRedoOperations = YES;
}

void WebEditorClient::registerCommandForUndo(PassRefPtr<EditCommand> cmd)
{
    registerCommandForUndoOrRedo(cmd, false);
}

void WebEditorClient::registerCommandForRedo(PassRefPtr<EditCommand> cmd)
{
    registerCommandForUndoOrRedo(cmd, true);
}

void WebEditorClient::clearUndoRedoOperations()
{
    if (m_haveUndoRedoOperations) {
        // workaround for <rdar://problem/4645507> NSUndoManager dies
        // with uncaught exception when undo items cleared while
        // groups are open
        NSUndoManager *undoManager = [m_webView undoManager];
        int groupingLevel = [undoManager groupingLevel];
        for (int i = 0; i < groupingLevel; ++i)
            [undoManager endUndoGrouping];
        
        [undoManager removeAllActionsWithTarget:m_undoTarget.get()];
        
        for (int i = 0; i < groupingLevel; ++i)
            [undoManager beginUndoGrouping];
        
        m_haveUndoRedoOperations = NO;
    }    
}

bool WebEditorClient::canUndo() const
{
    return [[m_webView undoManager] canUndo];
}

bool WebEditorClient::canRedo() const
{
    return [[m_webView undoManager] canRedo];
}

void WebEditorClient::undo()
{
    if (canUndo())
        [[m_webView undoManager] undo];
}

void WebEditorClient::redo()
{
    if (canRedo())
        [[m_webView undoManager] redo];    
}

void WebEditorClient::handleKeyboardEvent(KeyboardEvent* event)
{
    Frame* frame = event->target()->toNode()->document()->frame();
    WebHTMLView *webHTMLView = [[kit(frame) frameView] documentView];
    if ([webHTMLView _interceptEditingKeyEvent:event shouldSaveCommand:NO])
        event->setDefaultHandled();
}

void WebEditorClient::handleInputMethodKeydown(KeyboardEvent* event)
{
    Frame* frame = event->target()->toNode()->document()->frame();
    WebHTMLView *webHTMLView = [[kit(frame) frameView] documentView];
    if ([webHTMLView _interceptEditingKeyEvent:event shouldSaveCommand:YES])
        event->setDefaultHandled();
}

#define FormDelegateLog(ctrl)  LOG(FormDelegate, "control=%@", ctrl)

void WebEditorClient::textFieldDidBeginEditing(Element* element)
{
    if (!element->isHTMLElement())
        return;

    DOMHTMLInputElement* inputElement = [DOMHTMLInputElement _wrapHTMLInputElement:(HTMLInputElement*)element];
    FormDelegateLog(inputElement);
    CallFormDelegate(m_webView, @selector(textFieldDidBeginEditing:inFrame:), inputElement, kit(element->document()->frame()));
}

void WebEditorClient::textFieldDidEndEditing(Element* element)
{
    if (!element->isHTMLElement())
        return;

    DOMHTMLInputElement* inputElement = [DOMHTMLInputElement _wrapHTMLInputElement:(HTMLInputElement*)element];
    FormDelegateLog(inputElement);
    CallFormDelegate(m_webView, @selector(textFieldDidEndEditing:inFrame:), inputElement, kit(element->document()->frame()));
}
    
void WebEditorClient::textDidChangeInTextField(Element* element)
{
    if (!element->isHTMLElement())
        return;

    DOMHTMLInputElement* inputElement = [DOMHTMLInputElement _wrapHTMLInputElement:(HTMLInputElement*)element];
    FormDelegateLog(inputElement);
    CallFormDelegate(m_webView, @selector(textDidChangeInTextField:inFrame:), inputElement, kit(element->document()->frame()));
}

static SEL selectorForKeyEvent(KeyboardEvent* event)
{
    // FIXME: This helper function is for the auto-fill code so we can pass a selector to the form delegate.  
    // Eventually, we should move all of the auto-fill code down to WebKit and remove the need for this function by
    // not relying on the selector in the new implementation.
    // The key identifiers are from <http://www.w3.org/TR/DOM-Level-3-Events/keyset.html#KeySet-Set>
    String key = event->keyIdentifier();
    if (key == "Up")
        return @selector(moveUp:);
    if (key == "Down")
        return @selector(moveDown:);
    if (key == "U+001B")
        return @selector(cancel:);
    if (key == "U+0009") {
        if (event->shiftKey())
            return @selector(insertBacktab:);
        return @selector(insertTab:);
    }
    if (key == "Enter")
        return @selector(insertNewline:);
    return 0;
}

bool WebEditorClient::doTextFieldCommandFromEvent(Element* element, KeyboardEvent* event)
{
    if (!element->isHTMLElement())
        return NO;

    DOMHTMLInputElement* inputElement = [DOMHTMLInputElement _wrapHTMLInputElement:(HTMLInputElement*)element];
    FormDelegateLog(inputElement);
    if (SEL commandSelector = selectorForKeyEvent(event))
        return CallFormDelegateReturningBoolean(NO, m_webView, @selector(textField:doCommandBySelector:inFrame:), inputElement, commandSelector, kit(element->document()->frame()));
    return NO;
}

void WebEditorClient::textWillBeDeletedInTextField(Element* element)
{
    if (!element->isHTMLElement())
        return;

    DOMHTMLInputElement* inputElement = [DOMHTMLInputElement _wrapHTMLInputElement:(HTMLInputElement*)element];
    FormDelegateLog(inputElement);
    // We're using the deleteBackward selector for all deletion operations since the autofill code treats all deletions the same way.
    CallFormDelegateReturningBoolean(NO, m_webView, @selector(textField:doCommandBySelector:inFrame:), inputElement, @selector(deleteBackward:), kit(element->document()->frame()));
}

void WebEditorClient::textDidChangeInTextArea(Element* element)
{
    if (!element->isHTMLElement())
        return;

    DOMHTMLTextAreaElement* textAreaElement = [DOMHTMLTextAreaElement _wrapHTMLTextAreaElement:(HTMLTextAreaElement*)element];
    FormDelegateLog(textAreaElement);
    CallFormDelegate(m_webView, @selector(textDidChangeInTextArea:inFrame:), textAreaElement, kit(element->document()->frame()));
}

void WebEditorClient::ignoreWordInSpellDocument(const String& text)
{
    [[NSSpellChecker sharedSpellChecker] ignoreWord:text 
                             inSpellDocumentWithTag:spellCheckerDocumentTag()];
}

void WebEditorClient::learnWord(const String& text)
{
    [[NSSpellChecker sharedSpellChecker] learnWord:text];
}

void WebEditorClient::checkSpellingOfString(const UChar* text, int length, int* misspellingLocation, int* misspellingLength)
{
    NSString* textString = [[NSString alloc] initWithCharactersNoCopy:const_cast<UChar*>(text) length:length freeWhenDone:NO];
    NSRange range = [[NSSpellChecker sharedSpellChecker] checkSpellingOfString:textString startingAt:0 language:nil wrap:NO inSpellDocumentWithTag:spellCheckerDocumentTag() wordCount:NULL];
    [textString release];
    if (misspellingLocation) {
        // WebCore expects -1 to represent "not found"
        if (range.location == NSNotFound)
            *misspellingLocation = -1;
        else
            *misspellingLocation = range.location;
    }
    
    if (misspellingLength)
        *misspellingLength = range.length;
}

void WebEditorClient::checkGrammarOfString(const UChar* text, int length, Vector<GrammarDetail>& details, int* badGrammarLocation, int* badGrammarLength)
{
#ifndef BUILDING_ON_TIGER
    NSArray *grammarDetails;
    NSString* textString = [[NSString alloc] initWithCharactersNoCopy:const_cast<UChar*>(text) length:length freeWhenDone:NO];
    NSRange range = [[NSSpellChecker sharedSpellChecker] checkGrammarOfString:textString startingAt:0 language:nil wrap:NO inSpellDocumentWithTag:spellCheckerDocumentTag() details:&grammarDetails];
    [textString release];
    if (badGrammarLocation)
        // WebCore expects -1 to represent "not found"
        *badGrammarLocation = (range.location == NSNotFound) ? -1 : range.location;
    if (badGrammarLength)
        *badGrammarLength = range.length;
    for (NSDictionary *detail in grammarDetails) {
        ASSERT(detail);
        GrammarDetail grammarDetail;
        NSValue *detailRangeAsNSValue = [detail objectForKey:NSGrammarRange];
        ASSERT(detailRangeAsNSValue);
        NSRange detailNSRange = [detailRangeAsNSValue rangeValue];
        ASSERT(detailNSRange.location != NSNotFound && detailNSRange.length > 0);
        grammarDetail.location = detailNSRange.location;
        grammarDetail.length = detailNSRange.length;
        grammarDetail.userDescription = [detail objectForKey:NSGrammarUserDescription];
        NSArray *guesses = [detail objectForKey:NSGrammarCorrections];
        for (NSString *guess in guesses)
            grammarDetail.guesses.append(String(guess));
        details.append(grammarDetail);
    }
#endif
}

void WebEditorClient::checkSpellingAndGrammarOfParagraph(const UChar* text, int length, bool checkGrammar, Vector<TextCheckingResult>& results)
{
#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD)
    NSString *textString = [[NSString alloc] initWithCharactersNoCopy:const_cast<UChar*>(text) length:length freeWhenDone:NO];
    NSTextCheckingTypes checkingTypes = checkGrammar ? (NSTextCheckingTypeOrthography | NSTextCheckingTypeSpelling | NSTextCheckingTypeGrammar) : (NSTextCheckingTypeOrthography | NSTextCheckingTypeSpelling);
    NSArray *incomingResults = [[NSSpellChecker sharedSpellChecker] checkString:textString range:NSMakeRange(0, [textString length]) types:checkingTypes options:nil inSpellDocumentWithTag:spellCheckerDocumentTag() orthography:NULL wordCount:NULL];
    [textString release];
    for (NSTextCheckingResult *incomingResult in incomingResults) {
        NSRange resultRange = [incomingResult range];
        NSTextCheckingType resultType = [incomingResult resultType];
        ASSERT(resultRange.location != NSNotFound && resultRange.length > 0);
        if (NSTextCheckingTypeSpelling == resultType) {
            TextCheckingResult result;
            result.resultType = 1;
            result.location = resultRange.location;
            result.length = resultRange.length;
            results.append(result);
        } else if (checkGrammar && NSTextCheckingTypeGrammar == resultType) {
            TextCheckingResult result;
            NSArray *details = [incomingResult grammarDetails];
            result.resultType = 2;
            result.location = resultRange.location;
            result.length = resultRange.length;
            for (NSDictionary *incomingDetail in details) {
                ASSERT(incomingDetail);
                GrammarDetail detail;
                NSValue *detailRangeAsNSValue = [incomingDetail objectForKey:NSGrammarRange];
                ASSERT(detailRangeAsNSValue);
                NSRange detailNSRange = [detailRangeAsNSValue rangeValue];
                ASSERT(detailNSRange.location != NSNotFound && detailNSRange.length > 0);
                detail.location = detailNSRange.location;
                detail.length = detailNSRange.length;
                detail.userDescription = [incomingDetail objectForKey:NSGrammarUserDescription];
                NSArray *guesses = [incomingDetail objectForKey:NSGrammarCorrections];
                for (NSString *guess in guesses)
                    detail.guesses.append(String(guess));
                result.details.append(detail);
            }
            results.append(result);
        }
    }
#endif
}

void WebEditorClient::updateSpellingUIWithGrammarString(const String& badGrammarPhrase, const GrammarDetail& grammarDetail)
{
#ifndef BUILDING_ON_TIGER
    NSMutableArray* corrections = [NSMutableArray array];
    for (unsigned i = 0; i < grammarDetail.guesses.size(); i++) {
        NSString* guess = grammarDetail.guesses[i];
        [corrections addObject:guess];
    }
    NSRange grammarRange = NSMakeRange(grammarDetail.location, grammarDetail.length);
    NSString* grammarUserDescription = grammarDetail.userDescription;
    NSMutableDictionary* grammarDetailDict = [NSDictionary dictionaryWithObjectsAndKeys:[NSValue valueWithRange:grammarRange], NSGrammarRange, grammarUserDescription, NSGrammarUserDescription, corrections, NSGrammarCorrections, nil];
    
    [[NSSpellChecker sharedSpellChecker] updateSpellingPanelWithGrammarString:badGrammarPhrase detail:grammarDetailDict];
#endif
}

void WebEditorClient::updateSpellingUIWithMisspelledWord(const String& misspelledWord)
{
    [[NSSpellChecker sharedSpellChecker] updateSpellingPanelWithMisspelledWord:misspelledWord];
}

void WebEditorClient::showSpellingUI(bool show)
{
    NSPanel *spellingPanel = [[NSSpellChecker sharedSpellChecker] spellingPanel];
    if (show)
        [spellingPanel orderFront:nil];
    else
        [spellingPanel orderOut:nil];
}

bool WebEditorClient::spellingUIIsShowing()
{
    return [[[NSSpellChecker sharedSpellChecker] spellingPanel] isVisible];
}

void WebEditorClient::getGuessesForWord(const String& word, WTF::Vector<String>& guesses)
{
    NSArray* stringsArray = [[NSSpellChecker sharedSpellChecker] guessesForWord:word];
    unsigned count = [stringsArray count];
    guesses.clear();
    if (count > 0) {
        NSEnumerator* enumerator = [stringsArray objectEnumerator];
        NSString* string;
        while ((string = [enumerator nextObject]) != nil)
            guesses.append(string);
    }
}

void WebEditorClient::setInputMethodState(bool)
{
}