Source/core/page/EditorClient.h

/*
 * Copyright (C) 2006, 2007 Apple 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
 * 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.
 */

#ifndef EditorClient_h
#define EditorClient_h

#include "core/editing/EditorInsertAction.h"
#include "core/editing/TextAffinity.h"
#include "core/editing/UndoStep.h"
#include "core/platform/graphics/FloatRect.h"
#include "core/platform/text/TextChecking.h"
#include "wtf/Forward.h"
#include "wtf/Vector.h"

namespace WebCore {

class ArchiveResource;
class DocumentFragment;
class Editor;
class Element;
class Frame;
class HTMLElement;
class KeyboardEvent;
class Node;
class Range;
class SharedBuffer;
class SpellChecker;
class StylePropertySet;
class TextCheckerClient;
class VisibleSelection;
class VisiblePosition;

struct GrammarDetail;

class EditorClient {
public:
    virtual ~EditorClient() {  }

    virtual bool shouldDeleteRange(Range*) = 0;
    virtual bool smartInsertDeleteEnabled() = 0;
    virtual bool isSelectTrailingWhitespaceEnabled() = 0;
    virtual bool isContinuousSpellCheckingEnabled() = 0;
    virtual void toggleContinuousSpellChecking() = 0;
    virtual bool isGrammarCheckingEnabled() = 0;

    virtual bool shouldBeginEditing(Range*) = 0;
    virtual bool shouldEndEditing(Range*) = 0;
    virtual bool shouldInsertNode(Node*, Range*, EditorInsertAction) = 0;
    virtual bool shouldInsertText(const String&, Range*, EditorInsertAction) = 0;
    virtual bool shouldChangeSelectedRange(Range* fromRange, Range* toRange, EAffinity, bool stillSelecting) = 0;

    virtual bool shouldApplyStyle(StylePropertySet*, Range*) = 0;

    virtual void didBeginEditing() = 0;
    virtual void respondToChangedContents() = 0;
    virtual void respondToChangedSelection(Frame*) = 0;
    virtual void didEndEditing() = 0;
    virtual void didCancelCompositionOnSelectionChange() = 0;

    virtual void registerUndoStep(PassRefPtr<UndoStep>) = 0;
    virtual void registerRedoStep(PassRefPtr<UndoStep>) = 0;
    virtual void clearUndoRedoOperations() = 0;

    virtual bool canCopyCut(Frame*, bool defaultValue) const = 0;
    virtual bool canPaste(Frame*, bool defaultValue) const = 0;
    virtual bool canUndo() const = 0;
    virtual bool canRedo() const = 0;

    virtual void undo() = 0;
    virtual void redo() = 0;

    virtual void handleKeyboardEvent(KeyboardEvent*) = 0;

    virtual void textFieldDidEndEditing(Element*) = 0;
    virtual void textDidChangeInTextField(Element*) = 0;
    virtual bool doTextFieldCommandFromEvent(Element*, KeyboardEvent*) = 0;

    virtual TextCheckerClient* textChecker() = 0;

    virtual void updateSpellingUIWithMisspelledWord(const String&) = 0;
    virtual void showSpellingUI(bool show) = 0;
    virtual bool spellingUIIsShowing() = 0;
    virtual void willSetInputMethodState() = 0;

    // Support for global selections, used on platforms like the X Window System that treat
    // selection as a type of clipboard.
    virtual bool supportsGlobalSelection() { return false; }
};

}

#endif // EditorClient_h