Home | History | Annotate | Download | only in objc 
      1 /*
      2  * Copyright (C) 2004, 2006, 2006, 2008, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2006 James G. Speth <speth (at) end.com>
      4  * Copyright (C) 2006 Samuel Weinig <sam.weinig (at) gmail.com>
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #import "config.h"
     29 #import "DOMObject.h"
     30 
     31 #import "DOMHTMLLinkElementInternal.h"
     32 #import "DOMHTMLStyleElementInternal.h"
     33 #import "DOMInternal.h"
     34 #import "DOMProcessingInstructionInternal.h"
     35 #import "DOMStyleSheetInternal.h"
     36 #import "HTMLLinkElement.h"
     37 #import "HTMLStyleElement.h"
     38 #import "ProcessingInstruction.h"
     39 #import "StyleSheet.h"
     40 #import "WebScriptObjectPrivate.h"
     41 #import <wtf/UnusedParam.h>
     42 
     43 @implementation DOMObject
     44 
     45 // Prevent creation of DOM objects by clients who just "[[xxx alloc] init]".
     46 - (id)init
     47 {
     48     [NSException raise:NSGenericException format:@"+[%@ init]: should never be used", NSStringFromClass([self class])];
     49     [self release];
     50     return nil;
     51 }
     52 
     53 - (void)dealloc
     54 {
     55     if (_internal)
     56         removeDOMWrapper(_internal);
     57     [super dealloc];
     58 }
     59 
     60 - (id)copyWithZone:(NSZone *)unusedZone
     61 {
     62     UNUSED_PARAM(unusedZone);
     63     return [self retain];
     64 }
     65 
     66 @end
     67 
     68 @implementation DOMObject (DOMLinkStyle)
     69 
     70 - (DOMStyleSheet *)sheet
     71 {
     72     WebCore::StyleSheet* styleSheet;
     73 
     74     if ([self isKindOfClass:[DOMProcessingInstruction class]])
     75         styleSheet = core(static_cast<DOMProcessingInstruction *>(self))->sheet();
     76     else if ([self isKindOfClass:[DOMHTMLLinkElement class]])
     77         styleSheet = core(static_cast<DOMHTMLLinkElement *>(self))->sheet();
     78     else if ([self isKindOfClass:[DOMHTMLStyleElement class]])
     79         styleSheet = core(static_cast<DOMHTMLStyleElement *>(self))->sheet();
     80     else
     81         return nil;
     82 
     83     return kit(styleSheet);
     84 }
     85 
     86 @end
     87