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 "components/web_view/public/interfaces/frame_tree.mojom.h"
  10 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  11 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
  12
  13 namespace mojo {
  14 class View;
  15 }
  16
  17 namespace html_viewer {
  18
  19 class HTMLDocumentOOPIF;
  20 class GlobalState;
  21
  22 // DocumentResourceWaiter waits for the necessary resources needed to load an
  23 // HTMLDocument. Use IsReady() to determine when everything is available. Once
  24 // ready it is assumed HTMLDocument will call back for the FrameTreeClient and
  25 // FrameData.
  26 class DocumentResourceWaiter : public web_view::FrameTreeClient {
  27  public:
  28   DocumentResourceWaiter(GlobalState* global_state,
  29                          mojo::URLResponsePtr response,
  30                          HTMLDocumentOOPIF* document);
  31   ~DocumentResourceWaiter() override;
  32
  33   // Releases all the resources that have been accumulated.
  34   void Release(mojo::InterfaceRequest<web_view::FrameTreeClient>*
  35                    frame_tree_client_request,
  36                web_view::FrameTreeServerPtr* frame_tree_server,
  37                mojo::Array<web_view::FrameDataPtr>* frame_data,
  38                uint32_t* view_id,
  39                uint32_t* change_id,
  40                web_view::ViewConnectType* view_connect_type,
  41                OnConnectCallback* on_connect_callback);
  42
  43   mojo::URLResponsePtr ReleaseURLResponse();
  44
  45   // See class description.
  46   bool IsReady() const;
  47
  48   void set_root(mojo::View* root) { root_ = root; }
  49   mojo::View* root() { return root_; }
  50
  51   void Bind(mojo::InterfaceRequest<web_view::FrameTreeClient> request);
  52
  53  private:
  54   // web_view::FrameTreeClient:
  55   void OnConnect(web_view::FrameTreeServerPtr server,
  56                  uint32_t change_id,
  57                  uint32_t view_id,
  58                  web_view::ViewConnectType view_connect_type,
  59                  mojo::Array<web_view::FrameDataPtr> frame_data,
  60                  const OnConnectCallback& callback) override;
  61   void OnFrameAdded(uint32_t change_id,
  62                     web_view::FrameDataPtr frame_data) override;
  63   void OnFrameRemoved(uint32_t change_id, uint32_t frame_id) override;
  64   void OnFrameClientPropertyChanged(uint32_t frame_id,
  65                                     const mojo::String& name,
  66                                     mojo::Array<uint8_t> new_value) override;
  67   void OnPostMessageEvent(uint32_t source_frame_id,
  68                           uint32_t target_frame_id,
  69                           web_view::HTMLMessageEventPtr event) override;
  70   void OnWillNavigate(uint32_t target_frame_id) override;
  71
  72   GlobalState* global_state_;
  73   HTMLDocumentOOPIF* document_;
  74   mojo::URLResponsePtr response_;
  75   mojo::View* root_;
  76   web_view::FrameTreeServerPtr server_;
  77   mojo::Array<web_view::FrameDataPtr> frame_data_;
  78   uint32_t change_id_;
  79   uint32_t view_id_;
  80   web_view::ViewConnectType view_connect_type_;
  81   OnConnectCallback on_connect_callback_;
  82
  83   // Once we get OnConnect() we unbind |frame_tree_client_binding_| and put it
  84   // here.
  85   mojo::InterfaceRequest<web_view::FrameTreeClient> frame_tree_client_request_;
  86   mojo::Binding<web_view::FrameTreeClient> frame_tree_client_binding_;
  87
  88   DISALLOW_COPY_AND_ASSIGN(DocumentResourceWaiter);
  89 };
  90
  91 }  // namespace html_viewer
  92
  93 #endif  // COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_