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      1 /*
      2  * Copyright (C) 2006, 2007 Apple, Inc.  All rights reserved.
      3  * Copyright (C) 2012 Google, Inc.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "core/editing/Editor.h"
     29 
     30 #include "core/events/KeyboardEvent.h"
     31 #include "core/frame/LocalFrame.h"
     32 #include "core/page/EditorClient.h"
     33 #include "platform/PlatformKeyboardEvent.h"
     34 
     35 namespace blink {
     36 
     37 bool Editor::handleEditingKeyboardEvent(KeyboardEvent* evt)
     38 {
     39     const PlatformKeyboardEvent* keyEvent = evt->keyEvent();
     40     // do not treat this as text input if it's a system key event
     41     if (!keyEvent || keyEvent->isSystemKey())
     42         return false;
     43 
     44     String commandName = behavior().interpretKeyEvent(*evt);
     45     Command command = this->command(commandName);
     46 
     47     if (keyEvent->type() == PlatformEvent::RawKeyDown) {
     48         // WebKit doesn't have enough information about mode to decide how
     49         // commands that just insert text if executed via Editor should be treated,
     50         // so we leave it upon WebCore to either handle them immediately
     51         // (e.g. Tab that changes focus) or let a keypress event be generated
     52         // (e.g. Tab that inserts a Tab character, or Enter).
     53         if (command.isTextInsertion() || commandName.isEmpty())
     54             return false;
     55         return command.execute(evt);
     56     }
     57 
     58     if (command.execute(evt))
     59         return true;
     60 
     61     if (!behavior().shouldInsertCharacter(*evt) || !canEdit())
     62         return false;
     63 
     64     return insertText(evt->keyEvent()->text(), evt);
     65 }
     66 
     67 void Editor::handleKeyboardEvent(KeyboardEvent* evt)
     68 {
     69     // Give the embedder a chance to handle the keyboard event.
     70     if (client().handleKeyboardEvent() || handleEditingKeyboardEvent(evt))
     71         evt->setDefaultHandled();
     72 }
     73 
     74 } // namespace blink
     75