Home | History | Annotate | Download | only in Misc 
      1 /*
      2  * Copyright (C) 2005 Apple Computer, 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  *
      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  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import <WebKit/WebNSEventExtras.h>
     30 
     31 @implementation NSEvent (WebExtras)
     32 
     33 -(BOOL)_web_isKeyEvent:(unichar)key
     34 {
     35     int type = [self type];
     36     if (type != NSKeyDown && type != NSKeyUp)
     37         return NO;
     38 
     39     NSString *chars = [self charactersIgnoringModifiers];
     40     if ([chars length] != 1)
     41         return NO;
     42 
     43     unichar c = [chars characterAtIndex:0];
     44     if (c != key)
     45         return NO;
     46 
     47     return YES;
     48 }
     49 
     50 - (BOOL)_web_isDeleteKeyEvent
     51 {
     52     const unichar deleteKey = NSDeleteCharacter;
     53     const unichar deleteForwardKey = NSDeleteFunctionKey;
     54     return [self _web_isKeyEvent:deleteKey] || [self _web_isKeyEvent:deleteForwardKey];
     55 }
     56 
     57 - (BOOL)_web_isEscapeKeyEvent
     58 {
     59     const unichar escapeKey = 0x001b;
     60     return [self _web_isKeyEvent:escapeKey];
     61 }
     62 
     63 - (BOOL)_web_isOptionTabKeyEvent
     64 {
     65     return ([self modifierFlags] & NSAlternateKeyMask) && [self _web_isTabKeyEvent];
     66 }
     67 
     68 - (BOOL)_web_isReturnOrEnterKeyEvent
     69 {
     70     const unichar enterKey = NSEnterCharacter;
     71     const unichar returnKey = NSCarriageReturnCharacter;
     72     return [self _web_isKeyEvent:enterKey] || [self _web_isKeyEvent:returnKey];
     73 }
     74 
     75 - (BOOL)_web_isTabKeyEvent
     76 {
     77     const unichar tabKey = 0x0009;
     78     const unichar shiftTabKey = 0x0019;
     79     return [self _web_isKeyEvent:tabKey] || [self _web_isKeyEvent:shiftTabKey];
     80 }
     81 
     82 @end
     83