[Sheriff] Revert "Revert "Revert 266297 "1. Handle the case of empty embedder_extension_id..."""

chrome/browser/guest_view/web_view/web_view_find_helper.h

-// Copyright 2014 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_GUEST_VIEW_WEB_VIEW_WEB_VIEW_FIND_HELPER_H_
-#define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_FIND_HELPER_H_
-
-#include <map>
-#include <vector>
-
-#include "base/memory/weak_ptr.h"
-#include "base/values.h"
-#include "content/public/browser/web_contents.h"
-#include "third_party/WebKit/public/web/WebFindOptions.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace extensions {
-class WebviewFindFunction;
-} // namespace extensions
-class WebViewGuest;
-
-// Helper class for find requests and replies for the webview find API.
-class WebviewFindHelper {
- public:
-  explicit WebviewFindHelper(WebViewGuest* webview_guest);
-  ~WebviewFindHelper();
-
-  // Cancels all find requests in progress and calls their callback functions.
-  void CancelAllFindSessions();
-
-  // Dispatches the |findupdate| event.
-  void DispatchFindUpdateEvent(bool canceled, bool final_update);
-
-  // Ends the find session with id |session_request_id|  and calls the
-  // appropriate callbacks.
-  void EndFindSession(int session_request_id, bool canceled);
-
-  // Helper function for WebViewGuest::Find().
-  void Find(content::WebContents* guest_web_contents,
-            const base::string16& search_text,
-            const blink::WebFindOptions& options,
-            scoped_refptr<extensions::WebviewFindFunction> find_function);
-
-  // Helper function for WeViewGuest:FindReply().
-  void FindReply(int request_id,
-                 int number_of_matches,
-                 const gfx::Rect& selection_rect,
-                 int active_match_ordinal,
-                 bool final_update);
-
- private:
-  // A wrapper to store find results.
-  class FindResults {
-   public:
-    FindResults();
-    ~FindResults();
-
-    // Aggregate the find results.
-    void AggregateResults(int number_of_matches,
-                          const gfx::Rect& selection_rect,
-                          int active_match_ordinal,
-                          bool final_update);
-
-    // Stores find results into a DictionaryValue.
-    void PrepareResults(base::DictionaryValue* results);
-
-   private:
-    int number_of_matches_;
-    int active_match_ordinal_;
-    gfx::Rect selection_rect_;
-
-    friend void WebviewFindHelper::EndFindSession(int session_request_id,
-                                                  bool canceled);
-
-    DISALLOW_COPY_AND_ASSIGN(FindResults);
-  };
-
-  // Stores and processes the results for the |findupdate| event.
-  class FindUpdateEvent {
-   public:
-    explicit FindUpdateEvent(const base::string16& search_text);
-    ~FindUpdateEvent();
-
-    // Aggregate the find results.
-    void AggregateResults(int number_of_matches,
-                          const gfx::Rect& selection_rect,
-                          int active_match_ordinal,
-                          bool final_update);
-
-    // Stores find results and other event info into a DictionaryValue.
-    void PrepareResults(base::DictionaryValue* results);
-
-   private:
-    const base::string16 search_text_;
-    FindResults find_results_;
-
-    DISALLOW_COPY_AND_ASSIGN(FindUpdateEvent);
-  };
-
-  // Handles all information about a find request and its results.
-  class FindInfo {
-   public:
-    FindInfo(int request_id,
-             const base::string16& search_text,
-             const blink::WebFindOptions& options,
-             scoped_refptr<extensions::WebviewFindFunction> find_function);
-    ~FindInfo();
-
-    // Add another request to |find_next_requests_|.
-    void AddFindNextRequest(const base::WeakPtr<FindInfo>& request) {
-      find_next_requests_.push_back(request);
-    }
-
-    // Aggregate the find results.
-    void AggregateResults(int number_of_matches,
-                          const gfx::Rect& selection_rect,
-                          int active_match_ordinal,
-                          bool final_update);
-
-    base::WeakPtr<FindInfo> AsWeakPtr();
-
-    blink::WebFindOptions* options() {
-      return &options_;
-    }
-
-    bool replied() {
-      return replied_;
-    }
-
-    int request_id() {
-      return request_id_;
-    }
-
-    const base::string16& search_text() {
-      return search_text_;
-    }
-
-    // Calls the callback function within |find_function_| with the find results
-    // from within |find_results_|.
-    void SendResponse(bool canceled);
-
-   private:
-    const int request_id_;
-    const base::string16 search_text_;
-    blink::WebFindOptions options_;
-    scoped_refptr<extensions::WebviewFindFunction> find_function_;
-    FindResults find_results_;
-
-    // A find reply has been received for this find request.
-    bool replied_;
-
-    // Stores pointers to all the find next requests if this is the first
-    // request of a find session.
-    std::vector<base::WeakPtr<FindInfo> > find_next_requests_;
-
-    // Weak pointer used to access the find info of fin.
-    base::WeakPtrFactory<FindInfo> weak_ptr_factory_;
-
-    friend void WebviewFindHelper::EndFindSession(int session_request_id,
-                                                  bool canceled);
-
-    DISALLOW_COPY_AND_ASSIGN(FindInfo);
-  };
-
-  // Pointer to the webview that is being helped.
-  WebViewGuest* const webview_guest_;
-
-  // A counter to generate a unique request id for a find request.
-  // We only need the ids to be unique for a given WebViewGuest.
-  int current_find_request_id_;
-
-  // Stores aggregated find results and other info for the |findupdate| event.
-  scoped_ptr<FindUpdateEvent> find_update_event_;
-
-  // Pointer to the first request of the current find session.
-  linked_ptr<FindInfo> current_find_session_;
-
-  // Stores each find request's information by request_id so that its callback
-  // function can be called when its find results are available.
-  typedef std::map<int, linked_ptr<FindInfo> > FindInfoMap;
-  FindInfoMap find_info_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebviewFindHelper);
-};
-
-#endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_FIND_HELPER_H_