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                mojo::URLResponsePtr* response);
  38
  39   // See class description.
  40   bool IsReady() const;
  41
  42   void set_root(mojo::View* root) { root_ = root; }
  43   mojo::View* root() { return root_; }
  44
  45   void Bind(mojo::InterfaceRequest<mandoline::FrameTreeClient> request);
  46
  47  private:
  48   // mandoline::FrameTreeClient:
  49   void OnConnect(mandoline::FrameTreeServerPtr server,
  50                  mojo::Array<mandoline::FrameDataPtr> frame_data) override;
  51   void OnFrameAdded(mandoline::FrameDataPtr frame_data) override;
  52   void OnFrameRemoved(uint32_t frame_id) override;
  53
  54   GlobalState* global_state_;
  55   HTMLDocumentOOPIF* document_;
  56   mojo::URLResponsePtr response_;
  57   mojo::View* root_;
  58   mandoline::FrameTreeServerPtr server_;
  59   mojo::Array<mandoline::FrameDataPtr> frame_data_;
  60
  61   // Once we get OnConnect() we unbind |frame_tree_client_binding_| and put it
  62   // here.
  63   mojo::InterfaceRequest<mandoline::FrameTreeClient> frame_tree_client_request_;
  64   mojo::Binding<mandoline::FrameTreeClient> frame_tree_client_binding_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(DocumentResourceWaiter);
  67 };
  68
  69 }  // namespace html_viewer
  70
  71 #endif  // COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_