components/html_viewer/html_document_oopif.h

   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 #ifndef COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_OOPIF_H_
   6 #define COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_OOPIF_H_
   7
   8 #include <set>
   9
  10 #include "base/callback.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/scoped_vector.h"
  14 #include "components/html_viewer/ax_provider_impl.h"
  15 #include "components/html_viewer/html_frame_tree_manager_delegate.h"
  16 #include "components/html_viewer/public/interfaces/test_html_viewer.mojom.h"
  17 #include "components/view_manager/public/cpp/view_manager_client_factory.h"
  18 #include "components/view_manager/public/cpp/view_manager_delegate.h"
  19 #include "components/view_manager/public/cpp/view_observer.h"
  20 #include "mandoline/tab/public/interfaces/frame_tree.mojom.h"
  21 #include "mojo/application/public/cpp/app_lifetime_helper.h"
  22 #include "mojo/application/public/cpp/interface_factory.h"
  23 #include "mojo/application/public/cpp/service_provider_impl.h"
  24 #include "mojo/application/public/interfaces/application.mojom.h"
  25 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  26
  27 namespace base {
  28 class SingleThreadTaskRunner;
  29 }
  30
  31 namespace mojo {
  32 class ViewManager;
  33 class View;
  34 }
  35
  36 namespace html_viewer {
  37
  38 class AxProviderImpl;
  39 class DevToolsAgentImpl;
  40 class DocumentResourceWaiter;
  41 class GlobalState;
  42 class HTMLFrameTreeManager;
  43 class TestHTMLViewerImpl;
  44 class WebLayerTreeViewImpl;
  45
  46 // A view for a single HTML document.
  47 //
  48 // HTMLDocument is deleted in one of two ways:
  49 // . When the View the HTMLDocument is embedded in is destroyed.
  50 // . Explicitly by way of Destroy().
  51 class HTMLDocumentOOPIF
  52     : public mojo::ViewManagerDelegate,
  53       public mojo::ViewObserver,
  54       public HTMLFrameTreeManagerDelegate,
  55       public mojo::InterfaceFactory<mojo::AxProvider>,
  56       public mojo::InterfaceFactory<mandoline::FrameTreeClient>,
  57       public mojo::InterfaceFactory<TestHTMLViewer> {
  58  public:
  59   using DeleteCallback = base::Callback<void(HTMLDocumentOOPIF*)>;
  60
  61   // Load a new HTMLDocument with |response|.
  62   // |html_document_app| is the application this app was created in, and
  63   // |connection| the specific connection triggering this new instance.
  64   // |setup| is used to obtain init type state (such as resources).
  65   HTMLDocumentOOPIF(mojo::ApplicationImpl* html_document_app,
  66                     mojo::ApplicationConnection* connection,
  67                     mojo::URLResponsePtr response,
  68                     GlobalState* setup,
  69                     const DeleteCallback& delete_callback);
  70
  71   // Deletes this object.
  72   void Destroy();
  73
  74  private:
  75   friend class DocumentResourceWaiter;  // So it can call LoadIfNecessary().
  76
  77   // Requests for interfaces before the document is loaded go here. Once
  78   // loaded the requests are bound and BeforeLoadCache is deleted.
  79   struct BeforeLoadCache {
  80     BeforeLoadCache();
  81     ~BeforeLoadCache();
  82
  83     std::set<mojo::InterfaceRequest<mojo::AxProvider>*> ax_provider_requests;
  84     std::set<mojo::InterfaceRequest<TestHTMLViewer>*> test_interface_requests;
  85   };
  86
  87   ~HTMLDocumentOOPIF() override;
  88
  89   void LoadIfNecessary();
  90   void Load();
  91
  92   BeforeLoadCache* GetBeforeLoadCache();
  93
  94   // ViewManagerDelegate:
  95   void OnEmbed(mojo::View* root) override;
  96   void OnViewManagerDestroyed(mojo::ViewManager* view_manager) override;
  97
  98   // ViewObserver:
  99   void OnViewViewportMetricsChanged(
 100       mojo::View* view,
 101       const mojo::ViewportMetrics& old_metrics,
 102       const mojo::ViewportMetrics& new_metrics) override;
 103   void OnViewDestroyed(mojo::View* view) override;
 104
 105   // HTMLFrameTreeManagerDelegate:
 106   bool ShouldNavigateLocallyInMainFrame() override;
 107   void OnFrameDidFinishLoad(HTMLFrame* frame) override;
 108
 109   // mojo::InterfaceFactory<mojo::AxProvider>:
 110   void Create(mojo::ApplicationConnection* connection,
 111               mojo::InterfaceRequest<mojo::AxProvider> request) override;
 112
 113   // mojo::InterfaceFactory<mandoline::FrameTreeClient>:
 114   void Create(
 115       mojo::ApplicationConnection* connection,
 116       mojo::InterfaceRequest<mandoline::FrameTreeClient> request) override;
 117
 118   // mojo::InterfaceFactory<TestHTMLViewer>:
 119   void Create(mojo::ApplicationConnection* connection,
 120               mojo::InterfaceRequest<TestHTMLViewer> request) override;
 121
 122   scoped_ptr<mojo::AppRefCount> app_refcount_;
 123   mojo::ApplicationImpl* html_document_app_;
 124   mojo::ApplicationConnection* connection_;
 125   mojo::ViewManagerClientFactory view_manager_client_factory_;
 126
 127   // HTMLDocument owns these pointers; binding requests after document load.
 128   std::set<AxProviderImpl*> ax_providers_;
 129
 130   ScopedVector<TestHTMLViewerImpl> test_html_viewers_;
 131
 132   // Set to true when the local frame has finished loading.
 133   bool did_finish_local_frame_load_ = false;
 134
 135   GlobalState* global_state_;
 136
 137   scoped_ptr<HTMLFrameTreeManager> frame_tree_manager_;
 138   scoped_ptr<mojo::Binding<mandoline::FrameTreeClient>>
 139       frame_tree_manager_binding_;
 140
 141   scoped_ptr<DevToolsAgentImpl> devtools_agent_;
 142
 143   scoped_ptr<DocumentResourceWaiter> resource_waiter_;
 144
 145   scoped_ptr<BeforeLoadCache> before_load_cache_;
 146
 147   DeleteCallback delete_callback_;
 148
 149   DISALLOW_COPY_AND_ASSIGN(HTMLDocumentOOPIF);
 150 };
 151
 152 }  // namespace html_viewer
 153
 154 #endif  // COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_OOPIF_H_