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