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