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/*
* Copyright (C) 2004, 2006, 2007, 2008, 2009 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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 "DOMInternal.h"
#import "DOMNodeInternal.h"
#import "Frame.h"
#import "JSNode.h"
#import "WebScriptObjectPrivate.h"
#import "runtime_root.h"
//------------------------------------------------------------------------------------------
// Wrapping WebCore implementation objects
static NSMapTable* DOMWrapperCache;
NSMapTable* createWrapperCache()
{
#ifdef BUILDING_ON_TIGER
return NSCreateMapTable(NSNonOwnedPointerMapKeyCallBacks, NSNonRetainedObjectMapValueCallBacks, 0);
#else
// NSMapTable with zeroing weak pointers is the recommended way to build caches like this under garbage collection.
NSPointerFunctionsOptions keyOptions = NSPointerFunctionsOpaqueMemory | NSPointerFunctionsOpaquePersonality;
NSPointerFunctionsOptions valueOptions = NSPointerFunctionsZeroingWeakMemory | NSPointerFunctionsObjectPersonality;
return [[NSMapTable alloc] initWithKeyOptions:keyOptions valueOptions:valueOptions capacity:0];
#endif
}
NSMapTable* createWrapperCacheWithIntegerKeys()
{
#ifdef BUILDING_ON_TIGER
return NSCreateMapTable(NSIntMapKeyCallBacks, NSNonRetainedObjectMapValueCallBacks, 0);
#else
// NSMapTable with zeroing weak pointers is the recommended way to build caches like this under garbage collection.
NSPointerFunctionsOptions keyOptions = NSPointerFunctionsOpaqueMemory | NSPointerFunctionsIntegerPersonality;
NSPointerFunctionsOptions valueOptions = NSPointerFunctionsZeroingWeakMemory | NSPointerFunctionsObjectPersonality;
return [[NSMapTable alloc] initWithKeyOptions:keyOptions valueOptions:valueOptions capacity:0];
#endif
}
NSObject* getDOMWrapper(DOMObjectInternal* impl)
{
if (!DOMWrapperCache)
return nil;
return static_cast<NSObject*>(NSMapGet(DOMWrapperCache, impl));
}
void addDOMWrapper(NSObject* wrapper, DOMObjectInternal* impl)
{
if (!DOMWrapperCache)
DOMWrapperCache = createWrapperCache();
NSMapInsert(DOMWrapperCache, impl, wrapper);
}
void removeDOMWrapper(DOMObjectInternal* impl)
{
if (!DOMWrapperCache)
return;
NSMapRemove(DOMWrapperCache, impl);
}
//------------------------------------------------------------------------------------------
@implementation WebScriptObject (WebScriptObjectInternal)
// Only called by DOMObject subclass.
- (id)_init
{
self = [super init];
if (![self isKindOfClass:[DOMObject class]]) {
[NSException raise:NSGenericException format:@"+%@: _init is an internal initializer", [self class]];
return nil;
}
_private = [[WebScriptObjectPrivate alloc] init];
_private->isCreatedByDOMWrapper = YES;
return self;
}
- (void)_initializeScriptDOMNodeImp
{
ASSERT(_private->isCreatedByDOMWrapper);
if (![self isKindOfClass:[DOMNode class]]) {
// DOMObject can't map back to a document, and thus an interpreter,
// so for now only create wrappers for DOMNodes.
NSLog(@"%s:%d: We don't know how to create ObjC JS wrappers from DOMObjects yet.", __FILE__, __LINE__);
return;
}
// Extract the WebCore::Node from the ObjectiveC wrapper.
DOMNode *n = (DOMNode *)self;
WebCore::Node *nodeImpl = core(n);
// Dig up Interpreter and ExecState.
WebCore::Frame *frame = 0;
if (WebCore::Document* document = nodeImpl->document())
frame = document->frame();
if (!frame)
return;
// The global object which should own this node.
WebCore::JSDOMGlobalObject* globalObject = frame->script()->globalObject();
JSC::ExecState *exec = globalObject->globalExec();
// Get (or create) a cached JS object for the DOM node.
JSC::JSObject *scriptImp = asObject(WebCore::toJS(exec, globalObject, nodeImpl));
JSC::Bindings::RootObject* rootObject = frame->script()->bindingRootObject();
[self _setImp:scriptImp originRootObject:rootObject rootObject:rootObject];
}
@end
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