<webview>: Expose transparency API

content/renderer/browser_plugin/browser_plugin_bindings.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/browser_plugin/browser_plugin_bindings.h"
 
 #include <cstdlib>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 294 matching lines @@
   void UpdateDOMAttribute(BrowserPluginBindings* bindings,
                           std::string new_value) {
     bindings->instance()->UpdateDOMAttribute(name(), new_value);
   }
  private:
   std::string name_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBinding);
 };
 
+class BrowserPluginPropertyBindingAllowTransparency
+    : public BrowserPluginPropertyBinding {
+ public:
+  BrowserPluginPropertyBindingAllowTransparency()
+      : BrowserPluginPropertyBinding(
+          browser_plugin::kAttributeAllowTransparency) {
+  }
+  virtual bool GetProperty(BrowserPluginBindings* bindings,
+                           NPVariant* result) OVERRIDE {
+    bool allow_transparency =
+        bindings->instance()->GetAllowTransparencyAttribute();
+    BOOLEAN_TO_NPVARIANT(allow_transparency, *result);
+    return true;
+  }
+  virtual bool SetProperty(BrowserPluginBindings* bindings,
+                           NPObject* np_obj,
+                           const NPVariant* variant) OVERRIDE {
+    std::string value = StringFromNPVariant(*variant);
+    if (!bindings->instance()->HasDOMAttribute(name())) {
+      UpdateDOMAttribute(bindings, value);
+      bindings->instance()->ParseAllowTransparencyAttribute();
+    } else {
+      UpdateDOMAttribute(bindings, value);
+    }
+    return true;
+  }
+  virtual void RemoveProperty(BrowserPluginBindings* bindings,
+                              NPObject* np_obj) OVERRIDE {
+    bindings->instance()->RemoveDOMAttribute(name());
+    bindings->instance()->ParseAllowTransparencyAttribute();
+  }
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingAllowTransparency);
+};
+
 class BrowserPluginPropertyBindingAutoSize
     : public BrowserPluginPropertyBinding {
  public:
   BrowserPluginPropertyBindingAutoSize()
       : BrowserPluginPropertyBinding(browser_plugin::kAttributeAutoSize) {
   }
   virtual bool GetProperty(BrowserPluginBindings* bindings,
                            NPVariant* result) OVERRIDE {
     bool auto_size = bindings->instance()->GetAutoSizeAttribute();
     BOOLEAN_TO_NPVARIANT(auto_size, *result);
@@ skipping 306 matching lines @@
       weak_ptr_factory_(this) {
   NPObject* obj =
       WebBindings::createObject(instance->pluginNPP(),
                                 &browser_plugin_message_class);
   np_object_ = static_cast<BrowserPluginBindings::BrowserPluginNPObject*>(obj);
   np_object_->message_channel = weak_ptr_factory_.GetWeakPtr();
 
   method_bindings_.push_back(new BrowserPluginBindingAttach);
   method_bindings_.push_back(new BrowserPluginBindingAttachWindowTo);
 
+  property_bindings_.push_back(
+      new BrowserPluginPropertyBindingAllowTransparency);
   property_bindings_.push_back(new BrowserPluginPropertyBindingAutoSize);
   property_bindings_.push_back(new BrowserPluginPropertyBindingContentWindow);
   property_bindings_.push_back(new BrowserPluginPropertyBindingMaxHeight);
   property_bindings_.push_back(new BrowserPluginPropertyBindingMaxWidth);
   property_bindings_.push_back(new BrowserPluginPropertyBindingMinHeight);
   property_bindings_.push_back(new BrowserPluginPropertyBindingMinWidth);
   property_bindings_.push_back(new BrowserPluginPropertyBindingName);
   property_bindings_.push_back(new BrowserPluginPropertyBindingPartition);
   property_bindings_.push_back(new BrowserPluginPropertyBindingSrc);
 }
@@ skipping 68 matching lines @@
   for (PropertyBindingList::iterator iter = property_bindings_.begin();
        iter != property_bindings_.end();
        ++iter) {
     if ((*iter)->MatchesName(name))
       return (*iter)->GetProperty(this, result);
   }
   return false;
 }
 
 }  // namespace content