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      1 /*
      2  * Copyright (C) 2011 Apple Inc. All rights reserved.
      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 INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/html/HTMLSelectElement.h"
     28 
     29 #if OS(WIN)
     30 
     31 #include "core/dom/Element.h"
     32 #include "core/events/KeyboardEvent.h"
     33 #include "core/rendering/RenderMenuList.h"
     34 
     35 namespace WebCore {
     36 
     37 bool HTMLSelectElement::platformHandleKeydownEvent(KeyboardEvent* event)
     38 {
     39     // Allow (Shift) F4 and (Ctrl/Shift) Alt/AltGr + Up/Down arrow to pop the menu, matching Firefox.
     40     bool eventShowsMenu = (!event->altKey() && !event->ctrlKey() && event->keyIdentifier() == "F4")
     41         || ((event->altGraphKey() || event->altKey()) && (event->keyIdentifier() == "Down" || event->keyIdentifier() == "Up"));
     42     if (!eventShowsMenu)
     43         return false;
     44 
     45     // Save the selection so it can be compared to the new selection when dispatching change events during setSelectedIndex,
     46     // which gets called from RenderMenuList::valueChanged, which gets called after the user makes a selection from the menu.
     47     saveLastSelection();
     48     if (RenderMenuList* menuList = toRenderMenuList(renderer()))
     49         menuList->showPopup();
     50 
     51     int index = selectedIndex();
     52     ASSERT(index >= 0);
     53     ASSERT_WITH_SECURITY_IMPLICATION(index < static_cast<int>(listItems().size()));
     54     setSelectedIndex(index);
     55     event->setDefaultHandled();
     56     return true;
     57 }
     58 
     59 }
     60 
     61 #endif
     62