1 /*

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

     3  *

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

     5  * modification, are permitted provided that the following conditions

     6  * are met:

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

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

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

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

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

    12  *

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

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

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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

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

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

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

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

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

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

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

    24  */

    25 

    26 #include "config.h"

    27 #include "EventHandler.h"

    28 

    29 #include "ClipboardGtk.h"

    30 #include "FloatPoint.h"

    31 #include "FocusController.h"

    32 #include "Frame.h"

    33 #include "FrameView.h"

    34 #include "KeyboardEvent.h"

    35 #include "MouseEventWithHitTestResults.h"

    36 #include "NotImplemented.h"

    37 #include "Page.h"

    38 #include "PlatformKeyboardEvent.h"

    39 #include "PlatformWheelEvent.h"

    40 #include "RenderWidget.h"

    41 #include "Scrollbar.h"

    42 

    43 namespace WebCore {

    44 

    45 const double EventHandler::TextDragDelay = 0.0;

    46 

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

    48 {

    49     // We always allow tabs to all controls

    50     return true;

    51 }

    52 

    53 void EventHandler::focusDocumentView()

    54 {

    55     if (Page* page = m_frame->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 bool EventHandler::passMouseDownEventToWidget(Widget* widget)

    74 {

    75     notImplemented();

    76     return false;

    77 }

    78 

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

    80 {

    81     //GTK+ activation is not necessarily tied to mouse events, so it may

    82     //not make sense to implement this

    83 

    84     notImplemented();

    85     return false;

    86 }

    87 

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

    89 {

    90     ASSERT(widget);

    91     if (!widget->isFrameView())

    92         return false;

    93 

    94     return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(event);

    95 }

    96 

    97 PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const

    98 {

    99     return ClipboardGtk::create(ClipboardWritable, DataObjectGtk::create(), true);

   100 }

   101 

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

   103 {

   104     subframe->eventHandler()->handleMousePressEvent(mev.event());

   105     return true;

   106 }

   107 

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

   109 {

   110     subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);

   111     return true;

   112 }

   113 

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

   115 {

   116     subframe->eventHandler()->handleMouseReleaseEvent(mev.event());

   117     return true;

   118 }

   119 

   120 unsigned EventHandler::accessKeyModifiers()

   121 {

   122     return PlatformKeyboardEvent::AltKey;

   123 }

   124 

   125 // GTK+ must scroll horizontally if the mouse pointer is on top of the

   126 // horizontal scrollbar while scrolling with the wheel; we need to

   127 // add the deltas and ticks here so that this behavior is consistent

   128 // for styled scrollbars.

   129 bool EventHandler::shouldTurnVerticalTicksIntoHorizontal(const HitTestResult& result) const

   130 {

   131     return result.scrollbar() && result.scrollbar()->orientation() == HorizontalScrollbar;

   132 }

   133 

   134 }