extensions/renderer/app_window_custom_bindings.cc

   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
   3 // found in the LICENSE file.
   4
   5 #include "extensions/renderer/app_window_custom_bindings.h"
   6
   7 #include <string>
   8
   9 #include "base/command_line.h"
  10 #include "content/public/child/v8_value_converter.h"
  11 #include "content/public/renderer/render_thread.h"
  12 #include "content/public/renderer/render_view.h"
  13 #include "content/public/renderer/render_view_observer.h"
  14 #include "content/public/renderer/render_view_visitor.h"
  15 #include "extensions/common/extension_messages.h"
  16 #include "extensions/common/switches.h"
  17 #include "extensions/renderer/dispatcher.h"
  18 #include "extensions/renderer/script_context.h"
  19 #include "extensions/renderer/script_context_set.h"
  20 #include "grit/extensions_renderer_resources.h"
  21 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  22 #include "third_party/WebKit/public/web/WebView.h"
  23 #include "ui/base/resource/resource_bundle.h"
  24 #include "v8/include/v8.h"
  25
  26 namespace extensions {
  27
  28 class DidCreateDocumentElementObserver : public content::RenderViewObserver {
  29  public:
  30   DidCreateDocumentElementObserver(content::RenderView* view,
  31                                    Dispatcher* dispatcher)
  32       : content::RenderViewObserver(view), dispatcher_(dispatcher) {}
  33
  34   void DidCreateDocumentElement(blink::WebLocalFrame* frame) override {
  35     DCHECK(frame);
  36     DCHECK(dispatcher_);
  37     // Don't attempt to inject the titlebar into iframes.
  38     if (frame->parent())
  39       return;
  40     ScriptContext* script_context =
  41         dispatcher_->script_context_set().GetByV8Context(
  42             frame->mainWorldScriptContext());
  43     if (!script_context)
  44       return;
  45     script_context->module_system()->CallModuleMethod(
  46         "injectAppTitlebar", "didCreateDocumentElement");
  47   }
  48
  49  private:
  50   Dispatcher* dispatcher_;
  51 };
  52
  53 AppWindowCustomBindings::AppWindowCustomBindings(Dispatcher* dispatcher,
  54                                                  ScriptContext* context)
  55     : ObjectBackedNativeHandler(context), dispatcher_(dispatcher) {
  56   RouteFunction("GetView",
  57       base::Bind(&AppWindowCustomBindings::GetView,
  58                  base::Unretained(this)));
  59
  60   RouteFunction("GetWindowControlsHtmlTemplate",
  61       base::Bind(&AppWindowCustomBindings::GetWindowControlsHtmlTemplate,
  62                  base::Unretained(this)));
  63 }
  64
  65 void AppWindowCustomBindings::GetView(
  66     const v8::FunctionCallbackInfo<v8::Value>& args) {
  67   // TODO(jeremya): convert this to IDL nocompile to get validation, and turn
  68   // these argument checks into CHECK().
  69   if (args.Length() != 2)
  70     return;
  71
  72   if (!args[0]->IsInt32())
  73     return;
  74
  75   if (!args[1]->IsBoolean())
  76     return;
  77
  78   int view_id = args[0]->Int32Value();
  79
  80   bool inject_titlebar = args[1]->BooleanValue();
  81
  82   if (view_id == MSG_ROUTING_NONE)
  83     return;
  84
  85   content::RenderView* view = content::RenderView::FromRoutingID(view_id);
  86   if (!view)
  87     return;
  88
  89   if (inject_titlebar)
  90     new DidCreateDocumentElementObserver(view, dispatcher_);
  91
  92   // TODO(jeremya): it doesn't really make sense to set the opener here, but we
  93   // need to make sure the security origin is set up before returning the DOM
  94   // reference. A better way to do this would be to have the browser pass the
  95   // opener through so opener_id is set in RenderViewImpl's constructor.
  96   content::RenderView* render_view = context()->GetRenderView();
  97   if (!render_view)
  98     return;
  99   blink::WebFrame* opener = render_view->GetWebView()->mainFrame();
 100   blink::WebFrame* frame = view->GetWebView()->mainFrame();
 101   frame->setOpener(opener);
 102   content::RenderThread::Get()->Send(
 103       new ExtensionHostMsg_ResumeRequests(view->GetRoutingID()));
 104
 105   v8::Local<v8::Value> window = frame->mainWorldScriptContext()->Global();
 106   args.GetReturnValue().Set(window);
 107 }
 108
 109 void AppWindowCustomBindings::GetWindowControlsHtmlTemplate(
 110     const v8::FunctionCallbackInfo<v8::Value>& args) {
 111   CHECK_EQ(args.Length(), 0);
 112
 113   v8::Handle<v8::Value> result = v8::String::Empty(args.GetIsolate());
 114   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 115           switches::kEnableAppWindowControls)) {
 116     base::StringValue value(
 117         ResourceBundle::GetSharedInstance()
 118             .GetRawDataResource(IDR_WINDOW_CONTROLS_TEMPLATE_HTML)
 119             .as_string());
 120     scoped_ptr<content::V8ValueConverter> converter(
 121         content::V8ValueConverter::create());
 122     result = converter->ToV8Value(&value, context()->v8_context());
 123   }
 124   args.GetReturnValue().Set(result);
 125 }
 126
 127 }  // namespace extensions