components/web_view/web_view_impl.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_WEB_VIEW_WEB_VIEW_IMPL_H_
   6 #define COMPONENTS_WEB_VIEW_WEB_VIEW_IMPL_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "components/view_manager/public/cpp/view_observer.h"
  11 #include "components/view_manager/public/cpp/view_tree_delegate.h"
  12 #include "components/web_view/frame_devtools_agent_delegate.h"
  13 #include "components/web_view/frame_tree_delegate.h"
  14 #include "components/web_view/public/interfaces/web_view.mojom.h"
  15 #include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
  16
  17 namespace mojo {
  18 class ApplicationImpl;
  19 }
  20
  21 namespace web_view {
  22
  23 class Frame;
  24 class FrameTree;
  25 class FrameDevToolsAgent;
  26 class HTMLMessageEvent;
  27 class PendingWebViewLoad;
  28
  29 class WebViewImpl : public mojom::WebView,
  30                     public mojo::ViewTreeDelegate,
  31                     public mojo::ViewObserver,
  32                     public FrameTreeDelegate,
  33                     public FrameDevToolsAgentDelegate {
  34  public:
  35   WebViewImpl(mojo::ApplicationImpl* app,
  36               mojom::WebViewClientPtr client,
  37               mojo::InterfaceRequest<WebView> request);
  38   ~WebViewImpl() override;
  39
  40  private:
  41   friend class PendingWebViewLoad;
  42
  43   // See description above |pending_load_| for details.
  44   void OnLoad();
  45
  46   // Overridden from WebView:
  47   void LoadRequest(mojo::URLRequestPtr request) override;
  48   void GetViewTreeClient(
  49       mojo::InterfaceRequest<mojo::ViewTreeClient> view_tree_client)
  50           override;
  51
  52   // Overridden from mojo::ViewTreeDelegate:
  53   void OnEmbed(mojo::View* root) override;
  54   void OnConnectionLost(mojo::ViewTreeConnection* connection) override;
  55
  56   // Overridden from mojo::ViewObserver:
  57   void OnViewBoundsChanged(mojo::View* view,
  58                            const mojo::Rect& old_bounds,
  59                            const mojo::Rect& new_bounds) override;
  60   void OnViewDestroyed(mojo::View* view) override;
  61
  62   // Overridden from FrameTreeDelegate:
  63   bool CanPostMessageEventToFrame(const Frame* source,
  64                                   const Frame* target,
  65                                   HTMLMessageEvent* event) override;
  66   void LoadingStateChanged(bool loading) override;
  67   void ProgressChanged(double progress) override;
  68   void TitleChanged(const mojo::String& title) override;
  69   void NavigateTopLevel(Frame* source, mojo::URLRequestPtr request) override;
  70   void CanNavigateFrame(Frame* target,
  71                         mojo::URLRequestPtr request,
  72                         const CanNavigateFrameCallback& callback) override;
  73   void DidStartNavigation(Frame* frame) override;
  74
  75   // Overridden from FrameDevToolsAgent::Delegate:
  76   void HandlePageNavigateRequest(const GURL& url) override;
  77
  78   mojo::ApplicationImpl* app_;
  79   mojom::WebViewClientPtr client_;
  80   mojo::StrongBinding<WebView> binding_;
  81   mojo::View* root_;
  82   mojo::View* content_;
  83   scoped_ptr<FrameTree> frame_tree_;
  84
  85   // When LoadRequest() is called a PendingWebViewLoad is created to wait for
  86   // state needed to process the request. When the state is obtained OnLoad()
  87   // is invoked.
  88   scoped_ptr<PendingWebViewLoad> pending_load_;
  89
  90   scoped_ptr<FrameDevToolsAgent> devtools_agent_;
  91
  92   DISALLOW_COPY_AND_ASSIGN(WebViewImpl);
  93 };
  94
  95 }  // namespace web_view
  96
  97 #endif  // COMPONENTS_WEB_VIEW_WEB_VIEW_IMPL_H_