Framelet Prototype 2016

components/framelet/renderer/framelet_container.h

+// Copyright 2015 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.
+
+#ifndef COMPONENTS_FRAMELET_RENDERER_FRAMELET_CONTAINER_H_
+#define COMPONENTS_FRAMELET_RENDERER_FRAMELET_CONTAINER_H_
+
+#include "cc/layers/solid_color_layer.h"
+#include "cc/layers/ui_resource_layer.h"
+#include "cc/surfaces/surface_id.h"
+#include "components/guest_view/common/guest_view_constants.h"
+#include "components/guest_view/renderer/guest_view_container.h"
+#include "ipc/ipc_sender.h"
+#include "third_party/WebKit/public/platform/WebURLLoader.h"
+#include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
+#include "third_party/WebKit/public/web/WebFrameletClient.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace blink {
+class WebLayer;
+}
+
+namespace cc {
+struct SurfaceSequence;
+}
+
+namespace gfx {
+class Image;
+}
+
+namespace framelet {
+
+enum class ResourceUsageLevel : int;
+
+enum class ResourceMonitoring { ENABLED, DISABLED };
+
+class FrameletContainer : public guest_view::GuestViewContainer,
+                          public blink::WebFrameletClient {
+ public:
+  FrameletContainer(content::RenderFrame* render_frame,
+                    const GURL& url,
+                    IPC::Sender* thread_safe_sender);
+  ~FrameletContainer() override;
+
+  const GURL& url() const { return url_; }
+
+  const gfx::Size& element_size() const { return element_size_; }
+
+  bool focused() const { return focused_; }
+  bool visible() const { return visible_; }
+
+  blink::WebFocusType focus_type() const { return focus_type_; }
+
+  bool has_guest() const {
+    return guest_instance_id_ != guest_view::kInstanceIDNone;
+  }
+
+  int guest_instance_id() const { return guest_instance_id_; }
+
+  void Attach(int guest_instance_id);
+  void Detach();
+
+  // GuestViewContainer implementation.
+  bool OnMessage(const IPC::Message& message) override;
+
+  // WebFrameletClient implementation.
+  void didAttach(blink::WebFramelet* framelet) override;
+  void didDetach() override;
+  void forwardInputEvent(const blink::WebInputEvent* input_event) override;
+  void frameRectsChanged(const blink::WebRect& frame_rect) override;
+  void updateFocus(bool focused, blink::WebFocusType focus_type) override;
+  void updateVisibility(bool visible) override;
+
+ private:
+  void CreateFrameletIfReady(ResourceMonitoring resource_monitoring);
+  void UpdateClickToPlayLayerPosition();
+
+  // TODO(fsamuel): This is likely to cause tear down issues.
+  // We should not be holding a raw pointer to |sender|.
+  static void SatisfyCallbackOnCompositorThread(IPC::Sender* sender,
+                                                int host_routing_id,
+                                                int element_instance_id,
+                                                cc::SurfaceSequence sequence);
+  static void RequireCallbackOnCompositorThread(IPC::Sender* sender,
+                                                int host_routing_id,
+                                                int element_instance_id,
+                                                cc::SurfaceId id,
+                                                cc::SurfaceSequence sequence);
+
+  // Message handlers
+  void OnReportMemoryUsage(int element_instance_id,
+                           const ResourceUsageLevel& memory_usage);
+  void OnSetChildFrameSurface(int element_instance_id,
+                              const cc::SurfaceId& surface_id,
+                              const gfx::Size& frame_size,
+                              float scale_factor,
+                              const cc::SurfaceSequence& sequence);
+
+  int guest_instance_id_;
+  bool focused_;
+  blink::WebFocusType focus_type_;
+  bool visible_;
+  bool killed_;
+  gfx::Size element_size_;
+  GURL url_;
+  IPC::Sender* thread_safe_sender_;
+  blink::WebFramelet* framelet_;
+
+  scoped_ptr<blink::WebLayer> web_layer_;
+  scoped_refptr<cc::SolidColorLayer> solid_layer_;
+
+  const gfx::Image& click_to_play_image_;
+  scoped_refptr<cc::UIResourceLayer> click_to_play_layer_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameletContainer);
+};
+
+}  // namespace framelet
+
+#endif  // COMPONENTS_FRAMELET_RENDERER_FRAMELET_CONTAINER_H_