For local review prior to sending to webkit

bindings/v8/custom/V8DOMApplicationCacheCustom.cpp

+/*
+ * Copyright (C) 2008, 2009 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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.
+ */
+
+#include "config.h"
+#include "DOMApplicationCache.h"
+
+#if ENABLE(APPLICATION_CACHE)
+
+#include "V8Binding.h"
+#include "V8Document.h"
+#include "V8CustomBinding.h"
+#include "V8ObjectEventListener.h"
+#include "V8Proxy.h"
+#include "V8Utilities.h"
+#include "WorkerContextExecutionProxy.h"
+
+namespace WebCore {
+
+static const bool kFindOnly = true;
+static const bool kFindOrCreate = false;
+
+static PassRefPtr<EventListener> argumentToEventListener(DOMApplicationCache* appcache, v8::Local<v8::Value> value, bool findOnly)
+{
+#if 0 && ENABLE(WORKERS)
+    // FIXME: this is not tested yet
+    WorkerContextExecutionProxy* workerContextProxy = WorkerContextExecutionProxy::retrieve();
+    if (workerContextProxy)
+        return workerContextProxy->findOrCreateObjectEventListener(value, false, findOnly);
+#endif
+
+    V8Proxy* proxy = V8Proxy::retrieve(appcache->scriptExecutionContext());
+    if (proxy)
+        return findOnly ? proxy->FindObjectEventListener(value, false)
+                        : proxy->FindOrCreateObjectEventListener(value, false);
+    return 0;
+}
+
+static v8::Local<v8::Object> eventListenerToV8Object(EventListener* listener)
+{
+    return (static_cast<V8ObjectEventListener*>(listener))->getListenerObject();
+}
+
+static inline ApplicationCacheEventType toEventType(v8::Local<v8::String> value)
+{
+    String key = toWebCoreString(value);
+    ASSERT(key.startsWith("on"));
+    return DOMApplicationCache::toEventType(key.substring(2));
+}
+
+// Handles appcache.onfooevent attribute getting
+ACCESSOR_GETTER(DOMApplicationCacheEventHandler)
+{
+    INC_STATS("DOMApplicationCache.onevent_getter");
+    DOMApplicationCache* appcache = V8Proxy::ToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, info.Holder());
+    EventListener* listener = appcache->getAttributeEventListener(toEventType(name));
+    return eventListenerToV8Object(listener);
+}
+
+// Handles appcache.onfooevent attribute setting
+ACCESSOR_SETTER(DOMApplicationCacheEventHandler)
+{
+    INC_STATS("DOMApplicationCache.onevent_setter");
+    DOMApplicationCache* appcache = V8Proxy::ToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, info.Holder());
+    ApplicationCacheEventType eventType = toEventType(name);
+
+    if (EventListener* oldListener = appcache->getAttributeEventListener(eventType)) {
+        v8::Local<v8::Object> object = eventListenerToV8Object(oldListener);
+        removeHiddenDependency(info.Holder(), object, V8Custom::kDOMApplicationCacheCacheIndex);
+        appcache->clearAttributeEventListener(eventType);
+    }
+
+    if (value->IsFunction()) {
+        RefPtr<EventListener> newListener = argumentToEventListener(appcache, value, kFindOrCreate);
+        if (newListener) {
+            createHiddenDependency(info.Holder(), value, V8Custom::kDOMApplicationCacheCacheIndex);
+            appcache->setAttributeEventListener(eventType, newListener);
+        }
+    }
+}
+
+// Handles appcache.addEventListner(name, func, capture) method calls
+CALLBACK_FUNC_DECL(DOMApplicationCacheAddEventListener)
+{
+    INC_STATS("DOMApplicationCache.addEventListener()");
+    DOMApplicationCache* appcache = V8Proxy::ToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, args.Holder());
+
+    RefPtr<EventListener> listener = argumentToEventListener(appcache, args[1], kFindOrCreate);
+    if (listener) {
+        createHiddenDependency(args.Holder(), args[1], V8Custom::kDOMApplicationCacheCacheIndex);
+        String eventType = toWebCoreString(args[0]);
+        bool useCapture = args[2]->BooleanValue();
+        appcache->addEventListener(eventType, listener, useCapture);
+    }
+    return v8::Undefined();
+}
+
+// Handles appcache.removeEventListner(name, func, capture) method calls
+CALLBACK_FUNC_DECL(DOMApplicationCacheRemoveEventListener)
+{
+    INC_STATS("DOMApplicationCache.removeEventListener()");
+    DOMApplicationCache* appcache = V8Proxy::ToNativeObject<DOMApplicationCache>(V8ClassIndex::DOMAPPLICATIONCACHE, args.Holder());
+
+    RefPtr<EventListener> listener = argumentToEventListener(appcache, args[1], kFindOnly);
+    if (listener) {
+        removeHiddenDependency(args.Holder(), args[1], V8Custom::kDOMApplicationCacheCacheIndex);
+        String eventType = toWebCoreString(args[0]);
+        bool useCapture = args[2]->BooleanValue();
+        appcache->removeEventListener(eventType, listener.get(), useCapture);
+    }
+    return v8::Undefined();
+}
+
+} // namespace WebCore
+
+#endif  // ENABLE(APPLICATION_CACHE)