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      1 /*
      2  * Copyright (C) 2006 Zack Rusin <zack (at) 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 bool EventHandler::tabsToAllFormControls(KeyboardEvent* event) const
     66 {
     67     return (isKeyboardOptionTab(event) ? !qt_tab_all_widgets : qt_tab_all_widgets);
     68 }
     69 
     70 void EventHandler::focusDocumentView()
     71 {
     72     Page* page = m_frame->page();
     73     if (!page)
     74         return;
     75     page->focusController()->setFocusedFrame(m_frame);
     76 }
     77 
     78 bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults&)
     79 {
     80     notImplemented();
     81     return false;
     82 }
     83 
     84 bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const
     85 {
     86     // Qt has an activation event which is sent independently
     87     //   of mouse event so this thing will be a snafu to implement
     88     //   correctly
     89     return false;
     90 }
     91 
     92 bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& event, Widget* widget)
     93 {
     94     Q_ASSERT(widget);
     95     if (!widget->isFrameView())
     96         return false;
     97 
     98     return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(event);
     99 }
    100 
    101 PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
    102 {
    103     return ClipboardQt::create(ClipboardWritable, Clipboard::DragAndDrop);
    104 }
    105 
    106 bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
    107 {
    108     subframe->eventHandler()->handleMousePressEvent(mev.event());
    109     return true;
    110 }
    111 
    112 bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
    113 {
    114     subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
    115     return true;
    116 }
    117 
    118 bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
    119 {
    120     subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
    121     return true;
    122 }
    123 
    124 unsigned EventHandler::accessKeyModifiers()
    125 {
    126 #if OS(DARWIN)
    127     return PlatformKeyboardEvent::CtrlKey | PlatformKeyboardEvent::AltKey;
    128 #else
    129     return PlatformKeyboardEvent::AltKey;
    130 #endif
    131 }
    132 
    133 }
    134