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      1 /*
      2  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
      3  * Copyright (C) 2007-2009 Torch Mobile, Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "EventHandler.h"
     29 
     30 #include "ClipboardWin.h"
     31 #include "Cursor.h"
     32 #include "FloatPoint.h"
     33 #include "FocusController.h"
     34 #include "FrameView.h"
     35 #include "Frame.h"
     36 #include "HitTestRequest.h"
     37 #include "HitTestResult.h"
     38 #include "MouseEventWithHitTestResults.h"
     39 #include "Page.h"
     40 #include "PlatformKeyboardEvent.h"
     41 #include "PlatformWheelEvent.h"
     42 #include "Scrollbar.h"
     43 #include "SelectionController.h"
     44 #include "WCDataObject.h"
     45 #include "NotImplemented.h"
     46 
     47 namespace WebCore {
     48 
     49 const double EventHandler::TextDragDelay = 0.0;
     50 
     51 bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
     52 {
     53     subframe->eventHandler()->handleMousePressEvent(mev.event());
     54     return true;
     55 }
     56 
     57 bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
     58 {
     59     if (m_mouseDownMayStartDrag && !m_mouseDownWasInSubframe)
     60         return false;
     61     subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
     62     return true;
     63 }
     64 
     65 bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
     66 {
     67     subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
     68     return true;
     69 }
     70 
     71 bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& wheelEvent, Widget* widget)
     72 {
     73     if (!widget->isFrameView())
     74         return false;
     75 
     76     return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(wheelEvent);
     77 }
     78 
     79 bool EventHandler::tabsToAllControls(KeyboardEvent*) const
     80 {
     81     return true;
     82 }
     83 
     84 bool EventHandler::eventActivatedView(const PlatformMouseEvent& event) const
     85 {
     86     return event.activatedWebView();
     87 }
     88 
     89 PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
     90 {
     91 #if OS(WINCE)
     92     return 0;
     93 #else
     94     COMPtr<WCDataObject> dataObject;
     95     WCDataObject::createInstance(&dataObject);
     96     return ClipboardWin::create(true, dataObject.get(), ClipboardWritable);
     97 #endif
     98 }
     99 
    100 void EventHandler::focusDocumentView()
    101 {
    102     Page* page = m_frame->page();
    103     if (!page)
    104         return;
    105     page->focusController()->setFocusedFrame(m_frame);
    106 }
    107 
    108 bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults&)
    109 {
    110     notImplemented();
    111     return false;
    112 }
    113 
    114 unsigned EventHandler::accessKeyModifiers()
    115 {
    116     return PlatformKeyboardEvent::AltKey;
    117 }
    118 
    119 }
    120