1 /*

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

     3  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.

     4  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)

     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 "ClipboardQt.h"

    32 #include "Cursor.h"

    33 #include "Document.h"

    34 #include "EventNames.h"

    35 #include "FloatPoint.h"

    36 #include "FocusController.h"

    37 #include "Frame.h"

    38 #include "FrameLoader.h"

    39 #include "FrameTree.h"

    40 #include "FrameView.h"

    41 #include "HTMLFrameSetElement.h"

    42 #include "HitTestRequest.h"

    43 #include "HitTestResult.h"

    44 #include "KeyboardEvent.h"

    45 #include "MouseEventWithHitTestResults.h"

    46 #include "NotImplemented.h"

    47 #include "Page.h"

    48 #include "PlatformKeyboardEvent.h"

    49 #include "PlatformWheelEvent.h"

    50 #include "RenderWidget.h"

    51 #include "Scrollbar.h"

    52 

    53 QT_BEGIN_NAMESPACE

    54 Q_GUI_EXPORT extern bool qt_tab_all_widgets; // from qapplication.cpp

    55 QT_END_NAMESPACE

    56 

    57 namespace WebCore {

    58 

    59 #if defined(Q_WS_MAC)

    60 const double EventHandler::TextDragDelay = 0.15;

    61 #else

    62 const double EventHandler::TextDragDelay = 0.0;

    63 #endif

    64 

    65 static bool isKeyboardOptionTab(KeyboardEvent* event)

    66 {

    67     return event

    68         && (event->type() == eventNames().keydownEvent || event->type() == eventNames().keypressEvent)

    69         && event->altKey()

    70         && event->keyIdentifier() == "U+0009";

    71 }

    72 

    73 bool EventHandler::invertSenseOfTabsToLinks(KeyboardEvent* event) const

    74 {

    75     return isKeyboardOptionTab(event);

    76 }

    77 

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

    79 {

    80     return (isKeyboardOptionTab(event) ? !qt_tab_all_widgets : qt_tab_all_widgets);

    81 }

    82 

    83 void EventHandler::focusDocumentView()

    84 {

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

    86     if (!page)

    87         return;

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

    89 }

    90 

    91 bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults&)

    92 {

    93     notImplemented();

    94     return false;

    95 }

    96 

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

    98 {

    99     // Qt has an activation event which is sent independently

   100     //   of mouse event so this thing will be a snafu to implement

   101     //   correctly

   102     return false;

   103 }

   104 

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

   106 {

   107     Q_ASSERT(widget);

   108     if (!widget->isFrameView())

   109         return false;

   110 

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

   112 }

   113 

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

   115 {

   116     return ClipboardQt::create(ClipboardWritable, true);

   117 }

   118 

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

   120 {

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

   122     return true;

   123 }

   124 

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

   126 {

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

   128     return true;

   129 }

   130 

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

   132 {

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

   134     return true;

   135 }

   136 

   137 unsigned EventHandler::accessKeyModifiers()

   138 {

   139 #if OS(DARWIN)

   140     return PlatformKeyboardEvent::CtrlKey | PlatformKeyboardEvent::AltKey;

   141 #else

   142     return PlatformKeyboardEvent::AltKey;

   143 #endif

   144 }

   145 

   146 }