Index: chrome/browser/sync/sessions/sync_sessions_router_tab_helper.h |
diff --git a/chrome/browser/sync/sessions/sync_sessions_router_tab_helper.h b/chrome/browser/sync/sessions/sync_sessions_router_tab_helper.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..944249c05f6351740ae80f5924913ed0fec7c6de |
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+++ b/chrome/browser/sync/sessions/sync_sessions_router_tab_helper.h |
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+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSIONS_ROUTER_TAB_HELPER_H_ |
+#define CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSIONS_ROUTER_TAB_HELPER_H_ |
+ |
+#include "components/sessions/core/session_id.h" |
+#include "content/public/browser/web_contents_observer.h" |
+#include "content/public/browser/web_contents_user_data.h" |
+ |
+namespace sync_sessions { |
+ |
+class SyncSessionsWebContentsRouter; |
+ |
+// TabHelper class that forwards tab-level WebContentsObserver events to a |
+// (per-profile) sessions router. The router is responsible for forwarding |
+// these events to sessions sync. This class also tracks the source tab id |
+// of its corresponding tab, if available. |
+// A TabHelper is a WebContentsObserver tied to the top level WebContents for a |
+// browser tab. |
+// https://chromium.googlesource.com/chromium/src/+/master/docs/tab_helpers.md |
+class SyncSessionsRouterTabHelper |
+ : public content::WebContentsUserData<SyncSessionsRouterTabHelper>, |
+ public content::WebContentsObserver { |
+ public: |
+ ~SyncSessionsRouterTabHelper() override; |
+ |
+ static void CreateForWebContents( |
+ content::WebContents* web_contents, |
+ SyncSessionsWebContentsRouter* session_router); |
+ |
+ // Get the tab id of the tab responsible for creating the tab this helper |
+ // corresponds to. Returns -1 if there is no such tab. |
+ SessionID::id_type source_tab_id() const { return source_tab_id_; } |
+ |
+ private: |
+ friend class content::WebContentsUserData<SyncSessionsRouterTabHelper>; |
+ |
+ explicit SyncSessionsRouterTabHelper(content::WebContents* web_contents, |
+ SyncSessionsWebContentsRouter* router); |
+ |
+ // Set the tab id of the tab reponsible for creating the tab this helper |
+ // corresponds to. |
+ void set_source_tab_id(const SessionID::id_type id) { source_tab_id_ = id; } |
+ |
+ // WebContentsObserver implementation. |
+ void DidFinishNavigation( |
+ content::NavigationHandle* navigation_handle) override; |
+ void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) override; |
+ void WebContentsDestroyed() override; |
+ void DidFinishLoad(content::RenderFrameHost* render_frame_host, |
+ const GURL& validated_url) override; |
+ void DidOpenRequestedURL(content::WebContents* new_contents, |
+ content::RenderFrameHost* source_render_frame_host, |
+ const GURL& url, |
+ const content::Referrer& referrer, |
+ WindowOpenDisposition disposition, |
+ ui::PageTransition transition, |
+ bool started_from_context_menu, |
+ bool renderer_initiated) override; |
+ |
+ void NotifyRouter(); |
+ |
+ // |router_| is a KeyedService and is guaranteed to outlive |this|. |
+ SyncSessionsWebContentsRouter* router_; |
+ // Tab id of the tab from which this tab was created. Example events that |
+ // create this relationship: |
+ // * From context menu, "Open link in new tab". |
+ // * From context menu, "Open link in new window". |
+ // * Ctrl-click. |
+ // * Click on a link with target='_blank'. |
+ SessionID::id_type source_tab_id_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(SyncSessionsRouterTabHelper); |
+}; |
+ |
+} // namespace sync_sessions |
+ |
+#endif // CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSIONS_ROUTER_TAB_HELPER_H_ |