1 /*
2 * Copyright (C) 2009 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "DOMApplicationCache.h"
33
34 #if ENABLE(OFFLINE_WEB_APPLICATIONS)
35
36 #include "ApplicationCacheHost.h"
37 #include "V8Binding.h"
38 #include "V8CustomBinding.h"
39 #include "V8Document.h"
40 #include "V8ObjectEventListener.h"
41 #include "V8Proxy.h"
42 #include "V8Utilities.h"
43 #include "WorkerContextExecutionProxy.h"
44
45 namespace WebCore {
46
47 static const bool kFindOnly = true;
48 static const bool kFindOrCreate = false;
49
argumentToEventListener(DOMApplicationCache * appcache,v8::Local<v8::Value> value,bool findOnly)50 static PassRefPtr<EventListener> argumentToEventListener(DOMApplicationCache* appcache, v8::Local<v8::Value> value, bool findOnly)
51 {
52 V8Proxy* proxy = V8Proxy::retrieve(appcache->scriptExecutionContext());
53 if (proxy)
54 return findOnly ? proxy->objectListeners()->findWrapper(value, false)
55 : proxy->objectListeners()->findOrCreateWrapper<V8ObjectEventListener>(proxy->frame(), value, false);
56 return 0;
57 }
58
eventListenerToV8Object(EventListener * listener)59 static v8::Local<v8::Object> eventListenerToV8Object(EventListener* listener)
60 {
61 return (static_cast<V8ObjectEventListener*>(listener))->getListenerObject();
62 }
63
toEventID(v8::Local<v8::String> value)64 static inline ApplicationCacheHost::EventID toEventID(v8::Local<v8::String> value)
65 {
66 String key = toWebCoreString(value);
67 ASSERT(key.startsWith("on"));
68 return DOMApplicationCache::toEventID(key.substring(2));
69 }
70
71 // Handles appcache.onfooevent attribute getting
ACCESSOR_GETTER(DOMApplicationCacheEventHandler)72 ACCESSOR_GETTER(DOMApplicationCacheEventHandler)
73 {
74 INC_STATS("DOMApplicationCache.onevent_getter");
75 DOMApplicationCache* appcache = V8DOMWrapper::convertToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, info.Holder());
76 EventListener* listener = appcache->getAttributeEventListener(toEventID(name));
77 if (!listener)
78 return v8::Null();
79 return eventListenerToV8Object(listener);
80 }
81
82 // Handles appcache.onfooevent attribute setting
ACCESSOR_SETTER(DOMApplicationCacheEventHandler)83 ACCESSOR_SETTER(DOMApplicationCacheEventHandler)
84 {
85 INC_STATS("DOMApplicationCache.onevent_setter");
86 DOMApplicationCache* appcache = V8DOMWrapper::convertToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, info.Holder());
87 ApplicationCacheHost::EventID eventType = toEventID(name);
88
89 if (EventListener* oldListener = appcache->getAttributeEventListener(eventType)) {
90 v8::Local<v8::Object> object = eventListenerToV8Object(oldListener);
91 removeHiddenDependency(info.Holder(), object, V8Custom::kDOMApplicationCacheCacheIndex);
92 appcache->clearAttributeEventListener(eventType);
93 }
94
95 if (value->IsFunction()) {
96 RefPtr<EventListener> newListener = argumentToEventListener(appcache, value, kFindOrCreate);
97 if (newListener) {
98 createHiddenDependency(info.Holder(), value, V8Custom::kDOMApplicationCacheCacheIndex);
99 appcache->setAttributeEventListener(eventType, newListener);
100 }
101 }
102 }
103
104 // Handles appcache.addEventListner(name, func, capture) method calls
CALLBACK_FUNC_DECL(DOMApplicationCacheAddEventListener)105 CALLBACK_FUNC_DECL(DOMApplicationCacheAddEventListener)
106 {
107 INC_STATS("DOMApplicationCache.addEventListener()");
108 DOMApplicationCache* appcache = V8DOMWrapper::convertToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, args.Holder());
109
110 RefPtr<EventListener> listener = argumentToEventListener(appcache, args[1], kFindOrCreate);
111 if (listener) {
112 createHiddenDependency(args.Holder(), args[1], V8Custom::kDOMApplicationCacheCacheIndex);
113 String eventType = toWebCoreString(args[0]);
114 bool useCapture = args[2]->BooleanValue();
115 appcache->addEventListener(eventType, listener, useCapture);
116 }
117 return v8::Undefined();
118 }
119
120 // Handles appcache.removeEventListner(name, func, capture) method calls
CALLBACK_FUNC_DECL(DOMApplicationCacheRemoveEventListener)121 CALLBACK_FUNC_DECL(DOMApplicationCacheRemoveEventListener)
122 {
123 INC_STATS("DOMApplicationCache.removeEventListener()");
124 DOMApplicationCache* appcache = V8DOMWrapper::convertToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, args.Holder());
125
126 RefPtr<EventListener> listener = argumentToEventListener(appcache, args[1], kFindOnly);
127 if (listener) {
128 removeHiddenDependency(args.Holder(), args[1], V8Custom::kDOMApplicationCacheCacheIndex);
129 String eventType = toWebCoreString(args[0]);
130 bool useCapture = args[2]->BooleanValue();
131 appcache->removeEventListener(eventType, listener.get(), useCapture);
132 }
133 return v8::Undefined();
134 }
135
136 } // namespace WebCore
137
138 #endif // ENABLE(OFFLINE_WEB_APPLICATIONS)
139