Home | History | Annotate | Download | only in android 
      1 /*
      2  * Copyright 2009, The Android Open Source Project
      3  * Copyright (C) 2006 Zack Rusin <zack (at) kde.org>
      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 #define LOG_TAG "WebCore"
     27 
     28 #include "config.h"
     29 #include "EventHandler.h"
     30 
     31 #include "FocusController.h"
     32 #include "Frame.h"
     33 #include "KeyboardEvent.h"
     34 #include "MouseEventWithHitTestResults.h"
     35 #include "Page.h"
     36 #include "PlatformKeyboardEvent.h"
     37 #include "PlatformWheelEvent.h"
     38 #include "RenderWidget.h"
     39 
     40 namespace WebCore {
     41 
     42 bool EventHandler::tabsToAllFormControls(KeyboardEvent*) const
     43 {
     44     return true;
     45 }
     46 
     47 void EventHandler::focusDocumentView()
     48 {
     49     if (Page* page = m_frame->page())
     50         page->focusController()->setFocusedFrame(m_frame);
     51 }
     52 
     53 bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
     54 {
     55     // Figure out which view to send the event to.
     56     RenderObject* target = targetNode(event) ? targetNode(event)->renderer() : 0;
     57     if (!target || !target->isWidget())
     58         return false;
     59     return passMouseDownEventToWidget(toRenderWidget(target)->widget());
     60 }
     61 
     62 bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
     63 {
     64     return passMouseDownEventToWidget(renderWidget->widget());
     65 }
     66 
     67 // This function is used to route the mouse down event to the native widgets, it seems like a
     68 // work around for the Mac platform which does not support double clicks, but browsers do.
     69 bool EventHandler::passMouseDownEventToWidget(Widget*)
     70 {
     71     // return false so the normal propogation handles the event
     72     return false;
     73 }
     74 
     75 bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const
     76 {
     77     notImplemented();
     78     return false;
     79 }
     80 
     81 // This is called to route wheel events to child widgets when they are RenderWidget
     82 // as the parent usually gets wheel event. Don't have a mouse with a wheel to confirm
     83 // the operation of this function.
     84 bool EventHandler::passWheelEventToWidget(PlatformWheelEvent&, Widget*)
     85 {
     86     notImplemented();
     87     return false;
     88 }
     89 
     90 bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
     91 {
     92     subframe->eventHandler()->handleMousePressEvent(mev.event());
     93     return true;
     94 }
     95 
     96 bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev,
     97     Frame* subframe, HitTestResult* hoveredNode)
     98 {
     99     subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
    100     return true;
    101 }
    102 
    103 bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
    104 {
    105     subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
    106     return true;
    107 }
    108 
    109 PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
    110 {
    111     return PassRefPtr<Clipboard>(0);
    112 }
    113 
    114 unsigned EventHandler::accessKeyModifiers()
    115 {
    116     return PlatformKeyboardEvent::AltKey;
    117 }
    118 
    119 const double EventHandler::TextDragDelay = 0.0;
    120 
    121 }  // namespace WebCore
    122