domabstractview.mm

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2008 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 Computer, 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.
 */

#import "config.h"
#import "DOMAbstractView.h"

#import "DOMDocument.h"
#import "DOMInternal.h"
#import "DOMWindow.h"
#import "Document.h"
#import "ExceptionHandlers.h"
#import "Frame.h"
#import "ThreadCheck.h"
#import <wtf/GetPtr.h>

#define IMPL reinterpret_cast<WebCore::Frame*>(_internal)

@implementation DOMAbstractView

- (void)dealloc
{
    { DOM_ASSERT_MAIN_THREAD(); WebCoreThreadViolationCheck(); }
    [super dealloc];
}

- (DOMDocument *)document
{
    if (!_internal)
        return nil;
    return [DOMDocument _wrapDocument:WTF::getPtr(IMPL->domWindow()->document())];
}

@end

@implementation DOMAbstractView (Frame)

- (void)_disconnectFrame
{
    ASSERT(_internal);
    WebCore::removeDOMWrapper(_internal);
    _internal = 0;
}

@end

@implementation DOMAbstractView (WebCoreInternal)

- (WebCore::DOMWindow *)_abstractView
{
    if (!_internal)
        return nil;
    return IMPL->domWindow();
}

- (id)_initWithFrame:(WebCore::Frame *)impl
{
    { DOM_ASSERT_MAIN_THREAD(); WebCoreThreadViolationCheck(); };
    [super _init];
    _internal = reinterpret_cast<DOMObjectInternal*>(impl);
    WebCore::addDOMWrapper(self, impl);
    return self;
}

+ (DOMAbstractView *)_wrapAbstractView:(WebCore::DOMWindow *)impl
{
    { DOM_ASSERT_MAIN_THREAD(); WebCoreThreadViolationCheck(); };

    if (!impl)
        return nil;
    WebCore::Frame* frame = impl->frame();
    if (!frame)
        return nil;
    id cachedInstance;
    cachedInstance = WebCore::getDOMWrapper(frame);
    if (cachedInstance)
        return [[cachedInstance retain] autorelease];
    return [[[self alloc] _initWithFrame:frame] autorelease];
}

@end