dom2_eventsimpl.h

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/*
 * This file is part of the DOM implementation for KDE.
 *
 * Copyright (C) 2001 Peter Kelly ([e-mail])
 * Copyright (C) 2001 Tobias Anton ([e-mail])
 * Copyright (C) 2003 Apple Computer, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

#ifndef _DOM_EventsImpl_h_
#define _DOM_EventsImpl_h_

#include "dom/dom2_events.h"
#include "misc/shared.h"
#include "xml/dom2_viewsimpl.h"
#include <qdatetime.h>
#include <qevent.h>

class KHTMLPart;
class QPoint;
class QStringList;

namespace DOM {

class AbstractViewImpl;
class DOMStringImpl;
class NodeImpl;
class ClipboardImpl;

// ### support user-defined events

class EventImpl : public khtml::Shared<EventImpl>
{
public:
    enum EventId {
	UNKNOWN_EVENT = 0,
	// UI events
        DOMFOCUSIN_EVENT,
        DOMFOCUSOUT_EVENT,
        DOMACTIVATE_EVENT,
        // Mouse events
        CLICK_EVENT,
        MOUSEDOWN_EVENT,
        MOUSEUP_EVENT,
        MOUSEOVER_EVENT,
        MOUSEMOVE_EVENT,
        MOUSEOUT_EVENT,
        // IE copy/paste events
        BEFORECUT_EVENT,
        CUT_EVENT,
        BEFORECOPY_EVENT,
        COPY_EVENT,
        BEFOREPASTE_EVENT,
        PASTE_EVENT,
        // IE drag and drop events
        DRAGENTER_EVENT,
        DRAGOVER_EVENT,
        DRAGLEAVE_EVENT,
        DROP_EVENT,
        DRAGSTART_EVENT,
        DRAG_EVENT,
        DRAGEND_EVENT,
	// IE selection events
	SELECTSTART_EVENT,
        // Mutation events
        DOMSUBTREEMODIFIED_EVENT,
        DOMNODEINSERTED_EVENT,
        DOMNODEREMOVED_EVENT,
        DOMNODEREMOVEDFROMDOCUMENT_EVENT,
        DOMNODEINSERTEDINTODOCUMENT_EVENT,
        DOMATTRMODIFIED_EVENT,
        DOMCHARACTERDATAMODIFIED_EVENT,
	// HTML events
	LOAD_EVENT,
	BEFOREUNLOAD_EVENT,
	UNLOAD_EVENT,
	ABORT_EVENT,
	ERROR_EVENT,
	SELECT_EVENT,
	CHANGE_EVENT,
	SUBMIT_EVENT,
	RESET_EVENT,
	FOCUS_EVENT,
	BLUR_EVENT,
	RESIZE_EVENT,
	SCROLL_EVENT,
        CONTEXTMENU_EVENT,
#if APPLE_CHANGES
        SEARCH_EVENT,
#endif
        INPUT_EVENT,
        // Keyboard events
	KEYDOWN_EVENT,
	KEYUP_EVENT,
        // Text events
        TEXTINPUT_EVENT,
	// khtml events (not part of DOM)
	KHTML_DBLCLICK_EVENT, // for html ondblclick
	KHTML_CLICK_EVENT, // for html onclick
	KHTML_DRAGDROP_EVENT,
	KHTML_ERROR_EVENT,
	KEYPRESS_EVENT,
	KHTML_MOVE_EVENT,
	KHTML_ORIGCLICK_MOUSEUP_EVENT,
	// XMLHttpRequest events
	KHTML_READYSTATECHANGE_EVENT,
        // extensions
        MOUSEWHEEL_EVENT,
        HORIZONTALMOUSEWHEEL_EVENT,
        numEventIds
    };

    EventImpl();
    EventImpl(EventId _id, bool canBubbleArg, bool cancelableArg);
    virtual ~EventImpl();

    MAIN_THREAD_ALLOCATED;

    EventId id() const { return m_id; }

    DOMString type() const;
    NodeImpl *target() const;
    void setTarget(NodeImpl *_target);
    NodeImpl *currentTarget() const;
    void setCurrentTarget(NodeImpl *_currentTarget);
    unsigned short eventPhase() const;
    void setEventPhase(unsigned short _eventPhase);
    bool bubbles() const;
    bool cancelable() const;
    DOMTimeStamp timeStamp();
    void stopPropagation();
    void preventDefault();
    void initEvent(const DOMString &eventTypeArg, bool canBubbleArg, bool cancelableArg);

    virtual bool isUIEvent() const;
    virtual bool isMouseEvent() const;
    virtual bool isMutationEvent() const;
    virtual bool isKeyboardEvent() const;
    virtual bool isDragEvent() const;   // a subset of mouse events
    virtual bool isClipboardEvent() const;
    virtual bool isWheelEvent() const;

    bool propagationStopped() const { return m_propagationStopped; }
    bool defaultPrevented() const { return m_defaultPrevented; }

    static EventId typeToId(const DOMString &type);
    static DOMString idToType(EventId id);

    void setDefaultHandled() { m_defaultHandled = true; }
    bool defaultHandled() const { return m_defaultHandled; }

    void setCancelBubble(bool cancel) { m_cancelBubble = cancel; }
    void setDefaultPrevented(bool defaultPrevented) { m_defaultPrevented = defaultPrevented; }
    bool getCancelBubble() const { return m_cancelBubble; }

    virtual bool storesResultAsString() const;
    virtual void storeResult(const DOMString&);

protected:
    DOMStringImpl *m_type;
    bool m_canBubble;
    bool m_cancelable;

    bool m_propagationStopped;
    bool m_defaultPrevented;
    bool m_defaultHandled;
    bool m_cancelBubble;

    EventId m_id;
    NodeImpl *m_currentTarget; // ref > 0 maintained externally
    unsigned short m_eventPhase;
    NodeImpl *m_target;
    QDateTime m_createTime;
};



class UIEventImpl : public EventImpl
{
public:
    UIEventImpl();
    UIEventImpl(EventId _id,
		bool canBubbleArg,
		bool cancelableArg,
		AbstractViewImpl *viewArg,
		long detailArg);
    virtual ~UIEventImpl();
    AbstractViewImpl *view() const { return m_view; }
    long detail() const { return m_detail; }
    void initUIEvent(const DOMString &typeArg,
		     bool canBubbleArg,
		     bool cancelableArg,
		     const AbstractView &viewArg,
		     long detailArg);
    virtual bool isUIEvent() const;

protected:
    AbstractViewImpl *m_view;
    long m_detail;

};

class UIEventWithKeyStateImpl : public UIEventImpl {
public:
    UIEventWithKeyStateImpl() : m_ctrlKey(false), m_altKey(false), m_shiftKey(false), m_metaKey(false) { }
    UIEventWithKeyStateImpl(EventId eventID, bool canBubbleArg, bool cancelableArg, AbstractViewImpl *viewArg,
        long detailArg, bool ctrlKeyArg, bool altKeyArg, bool shiftKeyArg, bool metaKeyArg)
        : UIEventImpl(eventID, canBubbleArg, cancelableArg, viewArg, detailArg)
        , m_ctrlKey(ctrlKeyArg), m_altKey(altKeyArg), m_shiftKey(shiftKeyArg), m_metaKey(metaKeyArg) { }

    bool ctrlKey() const { return m_ctrlKey; }
    bool shiftKey() const { return m_shiftKey; }
    bool altKey() const { return m_altKey; }
    bool metaKey() const { return m_metaKey; }

protected: // expose these so init functions can set them
    bool m_ctrlKey : 1;
    bool m_altKey : 1;
    bool m_shiftKey : 1;
    bool m_metaKey : 1;
};

// Internal only: Helper class for what's common between mouse and wheel events.
class MouseRelatedEventImpl : public UIEventWithKeyStateImpl {
public:
    MouseRelatedEventImpl();
    MouseRelatedEventImpl(EventId _id,
                          bool canBubbleArg,
                          bool cancelableArg,
                          AbstractViewImpl *viewArg,
                          long detailArg,
                          long screenXArg,
                          long screenYArg,
                          long clientXArg,
                          long clientYArg,
                          bool ctrlKeyArg,
                          bool altKeyArg,
                          bool shiftKeyArg,
                          bool metaKeyArg,
                          bool isSimulated = false);