webeditorclient.cpp

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        IDOMElement* domElement = DOMElement::createInstance(e);
        if (domElement) {
            IDOMHTMLInputElement* domInputElement;
            if (SUCCEEDED(domElement->QueryInterface(IID_IDOMHTMLInputElement, (void**)&domInputElement))) {
                BOOL result;
                formDelegate->doPlatformCommand(domInputElement, BString(L"DeleteBackward"), kit(e->document()->frame()), &result);
                domInputElement->Release();
            }
            domElement->Release();
        }
        formDelegate->Release();
    }
}

void WebEditorClient::textDidChangeInTextArea(Element* e)
{
    IWebFormDelegate* formDelegate;
    if (SUCCEEDED(m_webView->formDelegate(&formDelegate)) && formDelegate) {
        IDOMElement* domElement = DOMElement::createInstance(e);
        if (domElement) {
            IDOMHTMLTextAreaElement* domTextAreaElement;
            if (SUCCEEDED(domElement->QueryInterface(IID_IDOMHTMLTextAreaElement, (void**)&domTextAreaElement))) {
                formDelegate->textDidChangeInTextArea(domTextAreaElement, kit(e->document()->frame()));
                domTextAreaElement->Release();
            }
            domElement->Release();
        }
        formDelegate->Release();
    }
}

class WebEditorUndoCommand : public IWebUndoCommand
{
public:
    WebEditorUndoCommand(PassRefPtr<EditCommand> editCommand, bool isUndo);
    void execute();

    // IUnknown
    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject);
    virtual ULONG STDMETHODCALLTYPE AddRef(void);
    virtual ULONG STDMETHODCALLTYPE Release(void);

private:
    ULONG m_refCount;
    RefPtr<EditCommand> m_editCommand;
    bool m_isUndo;
};

WebEditorUndoCommand::WebEditorUndoCommand(PassRefPtr<EditCommand> editCommand, bool isUndo)
    : m_editCommand(editCommand)
    , m_isUndo(isUndo) 
    , m_refCount(1)
{ 
}

void WebEditorUndoCommand::execute()
{
    if (m_isUndo)
        m_editCommand->unapply();
    else
        m_editCommand->reapply();
}

HRESULT STDMETHODCALLTYPE WebEditorUndoCommand::QueryInterface(REFIID riid, void** ppvObject)
{
    *ppvObject = 0;
    if (IsEqualGUID(riid, IID_IUnknown))
        *ppvObject = static_cast<IWebUndoCommand*>(this);
    else if (IsEqualGUID(riid, IID_IWebUndoCommand))
        *ppvObject = static_cast<IWebUndoCommand*>(this);
    else
        return E_NOINTERFACE;

    AddRef();
    return S_OK;
}

ULONG STDMETHODCALLTYPE WebEditorUndoCommand::AddRef(void)
{
    return ++m_refCount;
}

ULONG STDMETHODCALLTYPE WebEditorUndoCommand::Release(void)
{
    ULONG newRef = --m_refCount;
    if (!newRef)
        delete(this);

    return newRef;
}

static LPCTSTR undoNameForEditAction(EditAction editAction)
{
    switch (editAction) {
        case EditActionUnspecified: return 0;
        case EditActionSetColor: return LPCTSTR_UI_STRING_KEY("Set Color", "Set Color (Undo action name)", "Undo action name");
        case EditActionSetBackgroundColor: return LPCTSTR_UI_STRING_KEY("Set Background Color", "Set Background Color (Undo action name)", "Undo action name");
        case EditActionTurnOffKerning: return LPCTSTR_UI_STRING_KEY("Turn Off Kerning", "Turn Off Kerning (Undo action name)", "Undo action name");
        case EditActionTightenKerning: return LPCTSTR_UI_STRING_KEY("Tighten Kerning", "Tighten Kerning (Undo action name)", "Undo action name");
        case EditActionLoosenKerning: return LPCTSTR_UI_STRING_KEY("Loosen Kerning", "Loosen Kerning (Undo action name)", "Undo action name");
        case EditActionUseStandardKerning: return LPCTSTR_UI_STRING_KEY("Use Standard Kerning", "Use Standard Kerning (Undo action name)", "Undo action name");
        case EditActionTurnOffLigatures: return LPCTSTR_UI_STRING_KEY("Turn Off Ligatures", "Turn Off Ligatures (Undo action name)", "Undo action name");
        case EditActionUseStandardLigatures: return LPCTSTR_UI_STRING_KEY("Use Standard Ligatures", "Use Standard Ligatures (Undo action name)", "Undo action name");
        case EditActionUseAllLigatures: return LPCTSTR_UI_STRING_KEY("Use All Ligatures", "Use All Ligatures (Undo action name)", "Undo action name");
        case EditActionRaiseBaseline: return LPCTSTR_UI_STRING_KEY("Raise Baseline", "Raise Baseline (Undo action name)", "Undo action name");
        case EditActionLowerBaseline: return LPCTSTR_UI_STRING_KEY("Lower Baseline", "Lower Baseline (Undo action name)", "Undo action name");
        case EditActionSetTraditionalCharacterShape: return LPCTSTR_UI_STRING_KEY("Set Traditional Character Shape", "Set Traditional Character Shape (Undo action name)", "Undo action name");
        case EditActionSetFont: return LPCTSTR_UI_STRING_KEY("Set Font", "Set Font (Undo action name)", "Undo action name");
        case EditActionChangeAttributes: return LPCTSTR_UI_STRING_KEY("Change Attributes", "Change Attributes (Undo action name)", "Undo action name");
        case EditActionAlignLeft: return LPCTSTR_UI_STRING_KEY("Align Left", "Align Left (Undo action name)", "Undo action name");
        case EditActionAlignRight: return LPCTSTR_UI_STRING_KEY("Align Right", "Align Right (Undo action name)", "Undo action name");
        case EditActionCenter: return LPCTSTR_UI_STRING_KEY("Center", "Center (Undo action name)", "Undo action name");
        case EditActionJustify: return LPCTSTR_UI_STRING_KEY("Justify", "Justify (Undo action name)", "Undo action name");
        case EditActionSetWritingDirection: return LPCTSTR_UI_STRING_KEY("Set Writing Direction", "Set Writing Direction (Undo action name)", "Undo action name");
        case EditActionSubscript: return LPCTSTR_UI_STRING_KEY("Subscript", "Subscript (Undo action name)", "Undo action name");
        case EditActionSuperscript: return LPCTSTR_UI_STRING_KEY("Superscript", "Superscript (Undo action name)", "Undo action name");
        case EditActionUnderline: return LPCTSTR_UI_STRING_KEY("Underline", "Underline (Undo action name)", "Undo action name");
        case EditActionOutline: return LPCTSTR_UI_STRING_KEY("Outline", "Outline (Undo action name)", "Undo action name");
        case EditActionUnscript: return LPCTSTR_UI_STRING_KEY("Unscript", "Unscript (Undo action name)", "Undo action name");
        case EditActionDrag: return LPCTSTR_UI_STRING_KEY("Drag", "Drag (Undo action name)", "Undo action name");
        case EditActionCut: return LPCTSTR_UI_STRING_KEY("Cut", "Cut (Undo action name)", "Undo action name");
        case EditActionPaste: return LPCTSTR_UI_STRING_KEY("Paste", "Paste (Undo action name)", "Undo action name");
        case EditActionPasteFont: return LPCTSTR_UI_STRING_KEY("Paste Font", "Paste Font (Undo action name)", "Undo action name");
        case EditActionPasteRuler: return LPCTSTR_UI_STRING_KEY("Paste Ruler", "Paste Ruler (Undo action name)", "Undo action name");
        case EditActionTyping: return LPCTSTR_UI_STRING_KEY("Typing", "Typing (Undo action name)", "Undo action name");
        case EditActionCreateLink: return LPCTSTR_UI_STRING_KEY("Create Link", "Create Link (Undo action name)", "Undo action name");
        case EditActionUnlink: return LPCTSTR_UI_STRING_KEY("Unlink", "Unlink (Undo action name)", "Undo action name");
        case EditActionInsertList: return LPCTSTR_UI_STRING_KEY("Insert List", "Insert List (Undo action name)", "Undo action name");
        case EditActionFormatBlock: return LPCTSTR_UI_STRING_KEY("Formatting", "Format Block (Undo action name)", "Undo action name");
        case EditActionIndent: return LPCTSTR_UI_STRING_KEY("Indent", "Indent (Undo action name)", "Undo action name");
        case EditActionOutdent: return LPCTSTR_UI_STRING_KEY("Outdent", "Outdent (Undo action name)", "Undo action name");
    }
    return 0;
}

void WebEditorClient::registerCommandForUndo(PassRefPtr<EditCommand> command)
{
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        LPCTSTR actionName = undoNameForEditAction(command->editingAction());
        WebEditorUndoCommand* undoCommand = new WebEditorUndoCommand(command, true);
        if (!undoCommand)
            return;
        uiDelegate->registerUndoWithTarget(m_undoTarget, 0, undoCommand);
        undoCommand->Release(); // the undo manager owns the reference
        BSTR actionNameBSTR = SysAllocString(actionName);
        if (actionNameBSTR) {
            uiDelegate->setActionTitle(actionNameBSTR);
            SysFreeString(actionNameBSTR);
        }
        uiDelegate->Release();
    }
}

void WebEditorClient::registerCommandForRedo(PassRefPtr<EditCommand> command)
{
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        WebEditorUndoCommand* undoCommand = new WebEditorUndoCommand(command, false);
        if (!undoCommand)
            return;
        uiDelegate->registerUndoWithTarget(m_undoTarget, 0, undoCommand);
        undoCommand->Release(); // the undo manager owns the reference
        uiDelegate->Release();
    }
}

void WebEditorClient::clearUndoRedoOperations()
{
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        uiDelegate->removeAllActionsWithTarget(m_undoTarget);
        uiDelegate->Release();
    }
}

bool WebEditorClient::canUndo() const
{
    BOOL result = FALSE;
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        uiDelegate->canUndo(&result);
        uiDelegate->Release();
    }
    return !!result;
}

bool WebEditorClient::canRedo() const
{
    BOOL result = FALSE;
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        uiDelegate->canRedo(&result);
        uiDelegate->Release();
    }
    return !!result;
}

void WebEditorClient::undo()
{
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        uiDelegate->undo();
        uiDelegate->Release();
    }
}

void WebEditorClient::redo()
{
    IWebUIDelegate* uiDelegate = 0;
    if (SUCCEEDED(m_webView->uiDelegate(&uiDelegate))) {
        uiDelegate->redo();
        uiDelegate->Release();
    }
}

void WebEditorClient::handleKeyboardEvent(KeyboardEvent* evt)
{
    if (m_webView->handleEditingKeyboardEvent(evt))
        evt->setDefaultHandled();
}

void WebEditorClient::handleInputMethodKeydown(KeyboardEvent* )
{
}

bool WebEditorClient::isEditable()
{
    return false;
}

void WebEditorClient::ignoreWordInSpellDocument(const String& word)
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    initViewSpecificSpelling(m_webView);
    ed->ignoreWordInSpellDocument(m_webView, BString(word));
}

void WebEditorClient::learnWord(const String& word)
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    ed->learnWord(BString(word));
}

void WebEditorClient::checkSpellingOfString(const UChar* text, int length, int* misspellingLocation, int* misspellingLength)
{
    *misspellingLocation = -1;
    *misspellingLength = 0;

    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    initViewSpecificSpelling(m_webView);
    ed->checkSpellingOfString(m_webView, text, length, misspellingLocation, misspellingLength);
}

void WebEditorClient::checkGrammarOfString(const UChar* text, int length, Vector<GrammarDetail>& details, int* badGrammarLocation, int* badGrammarLength)
{
    details.clear();
    *badGrammarLocation = -1;
    *badGrammarLength = 0;

    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    initViewSpecificSpelling(m_webView);
    COMPtr<IEnumWebGrammarDetails> enumDetailsObj;
    if (FAILED(ed->checkGrammarOfString(m_webView, text, length, &enumDetailsObj, badGrammarLocation, badGrammarLength)))
        return;

    while (true) {
        ULONG fetched;
        COMPtr<IWebGrammarDetail> detailObj;
        if (enumDetailsObj->Next(1, &detailObj, &fetched) != S_OK)
            break;

        GrammarDetail detail;
        if (FAILED(detailObj->length(&detail.length)))
            continue;
        if (FAILED(detailObj->location(&detail.location)))
            continue;
        BSTR userDesc;
        if (FAILED(detailObj->userDescription(&userDesc)))
            continue;
        detail.userDescription = String(userDesc, SysStringLen(userDesc));
        SysFreeString(userDesc);

        COMPtr<IEnumSpellingGuesses> enumGuessesObj;
        if (FAILED(detailObj->guesses(&enumGuessesObj)))
            continue;
        while (true) {
            BSTR guess;
            if (enumGuessesObj->Next(1, &guess, &fetched) != S_OK)
                break;
            detail.guesses.append(String(guess, SysStringLen(guess)));
            SysFreeString(guess);
        }

        details.append(detail);
    }
}

void WebEditorClient::updateSpellingUIWithGrammarString(const String& string, const WebCore::GrammarDetail& detail)
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    Vector<BSTR> guessesBSTRs;
    for (unsigned i = 0; i < detail.guesses.size(); i++) {
        BString guess(detail.guesses[i]);
        guessesBSTRs.append(guess.release());
    }
    BString userDescriptionBSTR(detail.userDescription);
    ed->updateSpellingUIWithGrammarString(BString(string), detail.location, detail.length, userDescriptionBSTR, guessesBSTRs.data(), (int)guessesBSTRs.size());
    for (unsigned i = 0; i < guessesBSTRs.size(); i++)
        SysFreeString(guessesBSTRs[i]);
}

void WebEditorClient::updateSpellingUIWithMisspelledWord(const String& word)
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    ed->updateSpellingUIWithMisspelledWord(BString(word));
}

void WebEditorClient::showSpellingUI(bool show)
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;
    
    ed->showSpellingUI(show);
}

bool WebEditorClient::spellingUIIsShowing()
{
    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return false;

    BOOL showing;
    if (FAILED(ed->spellingUIIsShowing(&showing)))
        return false;

    return !!showing;
}

void WebEditorClient::getGuessesForWord(const String& word, Vector<String>& guesses)
{
    guesses.clear();

    COMPtr<IWebEditingDelegate> ed;
    if (FAILED(m_webView->editingDelegate(&ed)) || !ed.get())
        return;

    COMPtr<IEnumSpellingGuesses> enumGuessesObj;
    if (FAILED(ed->guessesForWord(BString(word), &enumGuessesObj)))
        return;

    while (true) {
        ULONG fetched;
        BSTR guess;
        if (enumGuessesObj->Next(1, &guess, &fetched) != S_OK)
            break;
        guesses.append(String(guess, SysStringLen(guess)));
        SysFreeString(guess);
    }
}

void WebEditorClient::setInputMethodState(bool enabled)
{
    m_webView->setInputMethodState(enabled);
}