components/html_viewer/document_resource_waiter.h

   1 // Copyright 2015 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 #ifndef COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_
   6 #define COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "mandoline/tab/public/interfaces/frame_tree.mojom.h"
  10 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  11
  12 namespace mojo {
  13 class View;
  14 }
  15
  16 namespace html_viewer {
  17
  18 class HTMLDocumentOOPIF;
  19 class GlobalState;
  20
  21 // DocumentResourceWaiter waits for the necessary resources needed to load an
  22 // HTMLDocument. Use IsReady() to determine when everything is available. Once
  23 // ready it is assumed HTMLDocument will call back for the FrameTreeClient and
  24 // FrameData.
  25 class DocumentResourceWaiter : public mandoline::FrameTreeClient {
  26  public:
  27   DocumentResourceWaiter(GlobalState* global_state,
  28                          mojo::URLResponsePtr response,
  29                          HTMLDocumentOOPIF* document);
  30   ~DocumentResourceWaiter() override;
  31
  32   // Releases all the resources that have been accumulated.
  33   void Release(mojo::InterfaceRequest<mandoline::FrameTreeClient>*
  34                    frame_tree_client_request,
  35                mandoline::FrameTreeServerPtr* frame_tree_server,
  36                mojo::Array<mandoline::FrameDataPtr>* frame_data);
  37
  38   mojo::URLResponsePtr ReleaseURLResponse();
  39
  40   // See class description.
  41   bool IsReady() const;
  42
  43   void set_root(mojo::View* root) { root_ = root; }
  44   mojo::View* root() { return root_; }
  45
  46   void Bind(mojo::InterfaceRequest<mandoline::FrameTreeClient> request);
  47
  48  private:
  49   // mandoline::FrameTreeClient:
  50   void OnConnect(mandoline::FrameTreeServerPtr server,
  51                  mojo::Array<mandoline::FrameDataPtr> frame_data) override;
  52   void OnFrameAdded(mandoline::FrameDataPtr frame_data) override;
  53   void OnFrameRemoved(uint32_t frame_id) override;
  54   void OnFrameClientPropertyChanged(uint32_t frame_id,
  55                                     const mojo::String& name,
  56                                     mojo::Array<uint8_t> new_value) override;
  57
  58   GlobalState* global_state_;
  59   HTMLDocumentOOPIF* document_;
  60   mojo::URLResponsePtr response_;
  61   mojo::View* root_;
  62   mandoline::FrameTreeServerPtr server_;
  63   mojo::Array<mandoline::FrameDataPtr> frame_data_;
  64
  65   // Once we get OnConnect() we unbind |frame_tree_client_binding_| and put it
  66   // here.
  67   mojo::InterfaceRequest<mandoline::FrameTreeClient> frame_tree_client_request_;
  68   mojo::Binding<mandoline::FrameTreeClient> frame_tree_client_binding_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(DocumentResourceWaiter);
  71 };
  72
  73 }  // namespace html_viewer
  74
  75 #endif  // COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_