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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/renderer/java/java_bridge_dispatcher.h" | 5 #include "content/renderer/java/java_bridge_dispatcher.h" |
| 6 | 6 |
| 7 #include "content/child/child_process.h" | 7 #include "content/child/child_process.h" |
| 8 #include "content/child/npapi/npobject_util.h" // For CreateNPVariant() | 8 #include "content/child/npapi/npobject_util.h" // For CreateNPVariant() |
| 9 #include "content/common/java_bridge_messages.h" | 9 #include "content/common/java_bridge_messages.h" |
| 10 #include "content/public/renderer/render_thread.h" | 10 #include "content/public/renderer/render_thread.h" |
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| 58 iter != objects_.end(); ++iter) { | 58 iter != objects_.end(); ++iter) { |
| 59 // This refs the NPObject. This reference is dropped when either the window | 59 // This refs the NPObject. This reference is dropped when either the window |
| 60 // object is later cleared, or the object is GC'ed. So the object may be | 60 // object is later cleared, or the object is GC'ed. So the object may be |
| 61 // deleted at any time after OnRemoveNamedObject() is called. | 61 // deleted at any time after OnRemoveNamedObject() is called. |
| 62 web_frame->bindToWindowObject(iter->first, | 62 web_frame->bindToWindowObject(iter->first, |
| 63 NPVARIANT_TO_OBJECT(iter->second)); | 63 NPVARIANT_TO_OBJECT(iter->second)); |
| 64 } | 64 } |
| 65 } | 65 } |
| 66 | 66 |
| 67 void JavaBridgeDispatcher::OnAddNamedObject( | 67 void JavaBridgeDispatcher::OnAddNamedObject( |
| 68 const string16& name, | 68 const base::string16& name, |
| 69 const NPVariant_Param& variant_param) { | 69 const NPVariant_Param& variant_param) { |
| 70 DCHECK_EQ(variant_param.type, NPVARIANT_PARAM_SENDER_OBJECT_ROUTING_ID); | 70 DCHECK_EQ(variant_param.type, NPVARIANT_PARAM_SENDER_OBJECT_ROUTING_ID); |
| 71 | 71 |
| 72 EnsureChannelIsSetUp(); | 72 EnsureChannelIsSetUp(); |
| 73 if (!channel_.get()) { | 73 if (!channel_.get()) { |
| 74 // It's possible for |channel_| to be NULL if the RenderView is going away. | 74 // It's possible for |channel_| to be NULL if the RenderView is going away. |
| 75 return; | 75 return; |
| 76 } | 76 } |
| 77 | 77 |
| 78 // This creates an NPObject, wrapped as an NPVariant. Pass 0 for the for | 78 // This creates an NPObject, wrapped as an NPVariant. Pass 0 for the for |
| 79 // containing window, as this is only used by plugins to pump the window | 79 // containing window, as this is only used by plugins to pump the window |
| 80 // message queue when a method on a renderer-side object causes a dialog to | 80 // message queue when a method on a renderer-side object causes a dialog to |
| 81 // be displayed, and the Java Bridge does not need this functionality. The | 81 // be displayed, and the Java Bridge does not need this functionality. The |
| 82 // page URL is also not required. | 82 // page URL is also not required. |
| 83 NPVariant variant; | 83 NPVariant variant; |
| 84 bool created = | 84 bool created = |
| 85 CreateNPVariant(variant_param, channel_.get(), &variant, 0, GURL()); | 85 CreateNPVariant(variant_param, channel_.get(), &variant, 0, GURL()); |
| 86 DCHECK(created); | 86 DCHECK(created); |
| 87 DCHECK_EQ(variant.type, NPVariantType_Object); | 87 DCHECK_EQ(variant.type, NPVariantType_Object); |
| 88 | 88 |
| 89 // The NPObject is created with a ref count of one, which we remove when | 89 // The NPObject is created with a ref count of one, which we remove when |
| 90 // OnRemoveNamedObject() is called for that object. | 90 // OnRemoveNamedObject() is called for that object. |
| 91 ObjectMap::iterator iter = objects_.find(name); | 91 ObjectMap::iterator iter = objects_.find(name); |
| 92 if (iter != objects_.end()) { | 92 if (iter != objects_.end()) { |
| 93 blink::WebBindings::releaseObject(NPVARIANT_TO_OBJECT(iter->second)); | 93 blink::WebBindings::releaseObject(NPVARIANT_TO_OBJECT(iter->second)); |
| 94 } | 94 } |
| 95 objects_[name] = variant; | 95 objects_[name] = variant; |
| 96 } | 96 } |
| 97 | 97 |
| 98 void JavaBridgeDispatcher::OnRemoveNamedObject(const string16& name) { | 98 void JavaBridgeDispatcher::OnRemoveNamedObject(const base::string16& name) { |
| 99 if (!channel_.get()) { | 99 if (!channel_.get()) { |
| 100 DCHECK(objects_.empty()); | 100 DCHECK(objects_.empty()); |
| 101 return; | 101 return; |
| 102 } | 102 } |
| 103 | 103 |
| 104 // Removing an object does not unbind it from JavaScript until the window | 104 // Removing an object does not unbind it from JavaScript until the window |
| 105 // object is next cleared. Note that the browser checks that the named object | 105 // object is next cleared. Note that the browser checks that the named object |
| 106 // is present. | 106 // is present. |
| 107 ObjectMap::iterator iter = objects_.find(name); | 107 ObjectMap::iterator iter = objects_.find(name); |
| 108 DCHECK(iter != objects_.end()); | 108 DCHECK(iter != objects_.end()); |
| 109 blink::WebBindings::releaseObject(NPVARIANT_TO_OBJECT(iter->second)); | 109 blink::WebBindings::releaseObject(NPVARIANT_TO_OBJECT(iter->second)); |
| 110 objects_.erase(iter); | 110 objects_.erase(iter); |
| 111 } | 111 } |
| 112 | 112 |
| 113 } // namespace content | 113 } // namespace content |
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