WebNSEventExtras.m   [plain text]

/*
* Copyright (C) 2005 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#if !PLATFORM(IOS)

#import <WebKitLegacy/WebNSEventExtras.h>
#import <wtf/mac/AppKitCompatibilityDeclarations.h>

@implementation NSEvent (WebExtras)

-(BOOL)_web_isKeyEvent:(unichar)key
{
int type = [self type];
if (type != NSEventTypeKeyDown && type != NSEventTypeKeyUp)
return NO;

NSString *chars = [self charactersIgnoringModifiers];
if ([chars length] != 1)
return NO;

unichar c = [chars characterAtIndex:0];
if (c != key)
return NO;

return YES;
}

- (BOOL)_web_isDeleteKeyEvent
{
const unichar deleteKey = NSDeleteCharacter;
const unichar deleteForwardKey = NSDeleteFunctionKey;
return [self _web_isKeyEvent:deleteKey] || [self _web_isKeyEvent:deleteForwardKey];
}

- (BOOL)_web_isEscapeKeyEvent
{
const unichar escapeKey = 0x001b;
return [self _web_isKeyEvent:escapeKey];
}

- (BOOL)_web_isOptionTabKeyEvent
{
return ([self modifierFlags] & NSEventModifierFlagOption) && [self _web_isTabKeyEvent];
}

- (BOOL)_web_isReturnOrEnterKeyEvent
{
const unichar enterKey = NSEnterCharacter;
const unichar returnKey = NSCarriageReturnCharacter;
return [self _web_isKeyEvent:enterKey] || [self _web_isKeyEvent:returnKey];
}

- (BOOL)_web_isTabKeyEvent
{
const unichar tabKey = 0x0009;
const unichar shiftTabKey = 0x0019;
return [self _web_isKeyEvent:tabKey] || [self _web_isKeyEvent:shiftTabKey];
}

@end

#endif // !PLATFORM(IOS)