extensions/renderer/guest_view/extensions_guest_view_container.cc

   1 // Copyright 2014 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/guest_view/extensions_guest_view_container.h"
   6
   7 #include "content/public/renderer/render_frame.h"
   8 #include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
   9 #include "ui/gfx/geometry/size.h"
  10
  11 namespace extensions {
  12
  13 ExtensionsGuestViewContainer::ExtensionsGuestViewContainer(
  14     content::RenderFrame* render_frame)
  15     : GuestViewContainer(render_frame),
  16       element_resize_isolate_(nullptr),
  17       weak_ptr_factory_(this) {
  18 }
  19
  20 ExtensionsGuestViewContainer::~ExtensionsGuestViewContainer() {
  21 }
  22
  23 void ExtensionsGuestViewContainer::OnDestroy(bool embedder_frame_destroyed) {
  24 }
  25
  26 void ExtensionsGuestViewContainer::RegisterElementResizeCallback(
  27     v8::Local<v8::Function> callback,
  28     v8::Isolate* isolate) {
  29   element_resize_callback_.Reset(isolate, callback);
  30   element_resize_isolate_ = isolate;
  31 }
  32
  33 void ExtensionsGuestViewContainer::DidResizeElement(const gfx::Size& new_size) {
  34   // Call the element resize callback, if one is registered.
  35   if (element_resize_callback_.IsEmpty())
  36     return;
  37
  38   base::MessageLoop::current()->PostTask(
  39       FROM_HERE,
  40       base::Bind(&ExtensionsGuestViewContainer::CallElementResizeCallback,
  41                  weak_ptr_factory_.GetWeakPtr(), new_size));
  42 }
  43
  44 void ExtensionsGuestViewContainer::CallElementResizeCallback(
  45     const gfx::Size& new_size) {
  46   v8::HandleScope handle_scope(element_resize_isolate_);
  47   v8::Local<v8::Function> callback = v8::Local<v8::Function>::New(
  48       element_resize_isolate_, element_resize_callback_);
  49   v8::Local<v8::Context> context = callback->CreationContext();
  50   if (context.IsEmpty())
  51     return;
  52
  53   const int argc = 2;
  54   v8::Local<v8::Value> argv[argc] = {
  55       v8::Integer::New(element_resize_isolate_, new_size.width()),
  56       v8::Integer::New(element_resize_isolate_, new_size.height())};
  57
  58   v8::Context::Scope context_scope(context);
  59   blink::WebScopedMicrotaskSuppression suppression;
  60
  61   callback->Call(context->Global(), argc, argv);
  62 }
  63
  64 }  // namespace extensions