1 /*

     2  * Copyright (C) 2010 Company 100, Inc.

     3  * Copyright 2009, The Android Open Source Project

     4  * Copyright (C) 2006 Zack Rusin <zack@kde.org>

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions

     8  * are met:

     9  * 1. Redistributions of source code must retain the above copyright

    10  *    notice, this list of conditions and the following disclaimer.

    11  * 2. Redistributions in binary form must reproduce the above copyright

    12  *    notice, this list of conditions and the following disclaimer in the

    13  *    documentation and/or other materials provided with the distribution.

    14  *

    15  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

    16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

    19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    26  */

    27 

    28 #include "config.h"

    29 #include "EventHandler.h"

    30 

    31 #include "ClipboardBrew.h"

    32 #include "EventNames.h"

    33 #include "FocusController.h"

    34 #include "Frame.h"

    35 #include "FrameView.h"

    36 #include "HitTestResult.h"

    37 #include "KeyboardEvent.h"

    38 #include "MouseEventWithHitTestResults.h"

    39 #include "NotImplemented.h"

    40 #include "Page.h"

    41 #include "PlatformKeyboardEvent.h"

    42 #include "PlatformWheelEvent.h"

    43 #include "RenderWidget.h"

    44 

    45 namespace WebCore {

    46 

    47 bool EventHandler::tabsToAllControls(KeyboardEvent* event) const

    48 {

    49     return true;

    50 }

    51 

    52 void EventHandler::focusDocumentView()

    53 {

    54     Page* page = m_frame->page();

    55     if (page)

    56         page->focusController()->setFocusedFrame(m_frame);

    57 }

    58 

    59 bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)

    60 {

    61     // Figure out which view to send the event to.

    62     RenderObject* target = event.targetNode() ? event.targetNode()->renderer() : 0;

    63     if (!target || !target->isWidget())

    64         return false;

    65     return passMouseDownEventToWidget(toRenderWidget(target)->widget());

    66 }

    67 

    68 bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)

    69 {

    70     return passMouseDownEventToWidget(renderWidget->widget());

    71 }

    72 

    73 // This function is used to route the mouse down event to the native widgets, it seems like a

    74 // work around for the Mac platform which does not support double clicks, but browsers do.

    75 bool EventHandler::passMouseDownEventToWidget(Widget* widget)

    76 {

    77     notImplemented();

    78     return false;

    79 }

    80 

    81 bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const

    82 {

    83     notImplemented();

    84     return false;

    85 }

    86 

    87 // This function is called for mouse events by FrameView::handleMousePressEvent().

    88 // It is used to ensure that events are sync'ed correctly between frames. For example

    89 // if the user presses down in one frame and up in another frame, this function will

    90 // returns true, and pass the event to the correct frame.

    91 bool EventHandler::passSubframeEventToSubframe(MouseEventWithHitTestResults& event, Frame* subframe, HitTestResult*)

    92 {

    93     notImplemented();

    94     return false;

    95 }

    96 

    97 // This is called to route wheel events to child widgets when they are RenderWidget

    98 // as the parent usually gets wheel event. Don't have a mouse with a wheel to confirm

    99 // the operation of this function.

   100 bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& event, Widget* widget)

   101 {

   102     notImplemented();

   103     return false;

   104 }

   105 

   106 bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)

   107 {

   108     return passSubframeEventToSubframe(mev, subframe);

   109 }

   110 

   111 bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)

   112 {

   113     return passSubframeEventToSubframe(mev, subframe, hoveredNode);

   114 }

   115 

   116 bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)

   117 {

   118     return passSubframeEventToSubframe(mev, subframe);

   119 }

   120 

   121 unsigned EventHandler::accessKeyModifiers()

   122 {

   123     return PlatformKeyboardEvent::AltKey;

   124 }

   125 

   126 } // namespace WebCore

   127