content/browser/frame_host/navigator_delegate.h

   1 // Copyright 2013 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 CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_DELEGATE_H_
   6 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_DELEGATE_H_
   7
   8 #include "base/strings/string16.h"
   9 #include "content/public/browser/invalidate_type.h"
  10 #include "content/public/browser/navigation_controller.h"
  11 #include "ui/base/page_transition_types.h"
  12 #include "ui/base/window_open_disposition.h"
  13
  14 class GURL;
  15 struct FrameHostMsg_DidCommitProvisionalLoad_Params;
  16 struct FrameHostMsg_DidFailProvisionalLoadWithError_Params;
  17
  18 namespace content {
  19
  20 class FrameTreeNode;
  21 class NavigationHandle;
  22 class RenderFrameHostImpl;
  23 struct LoadCommittedDetails;
  24 struct OpenURLParams;
  25
  26 // A delegate API used by Navigator to notify its embedder of navigation
  27 // related events.
  28 class CONTENT_EXPORT NavigatorDelegate {
  29  public:
  30   // Called when a navigation started. The same NavigationHandle will be
  31   // provided for events related to the same navigation.
  32   virtual void DidStartNavigation(NavigationHandle* navigation_handle) {}
  33
  34   // Called when a navigation was redirected.
  35   virtual void DidRedirectNavigation(NavigationHandle* navigation_handle) {}
  36
  37   // Called when a navigation committed.
  38   virtual void DidCommitNavigation(NavigationHandle* navigation_handle) {}
  39
  40   // Called when a document load resulting from the navigation stopped. Note
  41   // that |navigation_handle| will be destroyed at the end of this call.
  42   virtual void DidFinishNavigation(NavigationHandle* navigation_handle) {}
  43
  44   // TODO(clamy): all methods below that are related to navigation
  45   // events should go away in favor of the ones above.
  46
  47   // The RenderFrameHost started a provisional load for the frame
  48   // represented by |render_frame_host|.
  49   virtual void DidStartProvisionalLoad(
  50       RenderFrameHostImpl* render_frame_host,
  51       const GURL& validated_url,
  52       bool is_error_page,
  53       bool is_iframe_srcdoc) {}
  54
  55   // A provisional load in |render_frame_host| failed.
  56   virtual void DidFailProvisionalLoadWithError(
  57       RenderFrameHostImpl* render_frame_host,
  58       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {}
  59
  60   // Document load in |render_frame_host| failed.
  61   virtual void DidFailLoadWithError(
  62       RenderFrameHostImpl* render_frame_host,
  63       const GURL& url,
  64       int error_code,
  65       const base::string16& error_description,
  66       bool was_ignored_by_handler) {}
  67
  68   // A navigation was committed in |render_frame_host|.
  69   virtual void DidCommitProvisionalLoad(
  70       RenderFrameHostImpl* render_frame_host,
  71       const GURL& url,
  72       ui::PageTransition transition_type) {}
  73
  74   // Handles post-navigation tasks in navigation BEFORE the entry has been
  75   // committed to the NavigationController.
  76   virtual void DidNavigateMainFramePreCommit(bool navigation_is_within_page) {}
  77
  78   // Handles post-navigation tasks in navigation AFTER the entry has been
  79   // committed to the NavigationController. Note that the NavigationEntry is
  80   // not provided since it may be invalid/changed after being committed. The
  81   // NavigationController's last committed entry is for this navigation.
  82   virtual void DidNavigateMainFramePostCommit(
  83       RenderFrameHostImpl* render_frame_host,
  84       const LoadCommittedDetails& details,
  85       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {}
  86   virtual void DidNavigateAnyFramePostCommit(
  87       RenderFrameHostImpl* render_frame_host,
  88       const LoadCommittedDetails& details,
  89       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {}
  90
  91   virtual void SetMainFrameMimeType(const std::string& mime_type) {}
  92   virtual bool CanOverscrollContent() const;
  93
  94   // Notification to the Navigator embedder that navigation state has
  95   // changed. This method corresponds to
  96   // WebContents::NotifyNavigationStateChanged.
  97   virtual void NotifyChangedNavigationState(InvalidateTypes changed_flags) {}
  98
  99   // Notifies the Navigator embedder that it is beginning to navigate a frame.
 100   virtual void AboutToNavigateRenderFrame(
 101       RenderFrameHostImpl* old_host,
 102       RenderFrameHostImpl* new_host) {}
 103
 104   // Notifies the Navigator embedder that a navigation to the pending
 105   // NavigationEntry has started in the browser process.
 106   virtual void DidStartNavigationToPendingEntry(
 107       const GURL& url,
 108       NavigationController::ReloadType reload_type) {}
 109
 110   // Opens a URL with the given parameters. See PageNavigator::OpenURL, which
 111   // this forwards to.
 112   virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 113                               const OpenURLParams& params) {}
 114
 115   // Returns whether URLs for aborted browser-initiated navigations should be
 116   // preserved in the omnibox.  Defaults to false.
 117   virtual bool ShouldPreserveAbortedURLs();
 118
 119   // A RenderFrameHost in the specified |frame_tree_node| started loading a new
 120   // document. This correponds to Blink's notion of the throbber starting.
 121   // |to_different_document| will be true unless the load is a fragment
 122   // navigation, or triggered by history.pushState/replaceState.
 123   virtual void DidStartLoading(FrameTreeNode* frame_tree_node,
 124                                bool to_different_document) {}
 125
 126   // A document stopped loading. This corresponds to Blink's notion of the
 127   // throbber stopping.
 128   virtual void DidStopLoading() {}
 129
 130   // The load progress was changed.
 131   virtual void DidChangeLoadProgress() {}
 132 };
 133
 134 }  // namspace content
 135
 136 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_DELEGATE_H_