Notify launcher page with onTransitionChanged event

ui/app_list/views/contents_view.h

 // Copyright (c) 2012 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 UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 #define UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 113 matching lines @@
   // Invoked when active view is changed.
   void ActivePageChanged(bool show_search_results);
 
   // Returns the size of the default content area.
   gfx::Size GetDefaultContentsSize() const;
 
   // Gets the origin (the off-screen resting place) for a given launcher page
   // with index |page_index|.
   gfx::Rect GetOffscreenPageBounds(int page_index) const;
 
+  // Notifies the view delegate that the custom launcher page's animation has
+  // changed.
+  void NotifyCustomLauncherPageAnimationChanged(double progress,
+                                                int current_page,
+                                                int target_page);
+
   // Calculates and sets the bounds for the subviews. If there is currently an
   // animation, this positions the views as appropriate for the current frame.
   void UpdatePageBounds();
 
   // Adds |view| as a new page to the end of the list of launcher pages. The
   // view is inserted as a child of the ContentsView, and a button with
   // |resource_id| is added to the ContentsSwitcherView. There is no name
   // associated with the page. Returns the index of the new page.
   int AddLauncherPage(views::View* view, int resource_id);
 
   // Adds |view| as a new page to the end of the list of launcher pages. The
   // view is inserted as a child of the ContentsView, and a button with
   // |resource_id| is added to the ContentsSwitcherView. The page is associated
   // with the name |state|. Returns the index of the new page.
   int AddLauncherPage(views::View* view,
                       int resource_id,
                       AppListModel::State state);
 
   // Gets the PaginationModel owned by the AppsGridView.
   // Note: This is different to |pagination_model_|, which manages top-level
   // launcher-page pagination.
   PaginationModel* GetAppsPaginationModel();
 
   // Special sub views of the ContentsView. All owned by the views hierarchy.
   AppsContainerView* apps_container_view_;
   SearchResultListView* search_results_view_;
   StartPageView* start_page_view_;
 
+  AppListViewDelegate* view_delegate_;

[tapted, 2014/11/06 06:05:45]

needs to be initialized.

But I'd prefer exposing the AppListMainView::delegate_, and getting the ALVD
with

app_list_main_view_->delegate(); (or writing a helper function that does that).

Then you could remove the delegate argument from ContentsView::Init as well.

[calamity, 2014/11/07 03:43:29]

Done.

+
   AppListMainView* app_list_main_view_;     // Parent view, owns this.
   // Sibling view, owned by |app_list_main_view_|.
   ContentsSwitcherView* contents_switcher_view_;
 
   scoped_ptr<views::ViewModel> view_model_;
 
   // Maps State onto |view_model_| indices.
   std::map<AppListModel::State, int> state_to_view_;
 
   // Maps |view_model_| indices onto State.
   std::map<int, AppListModel::State> view_to_state_;
 
   // The page that was showing before ShowSearchResults(true) was invoked.
   int page_before_search_;
 
   // Manages the pagination for the launcher pages.
   PaginationModel pagination_model_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentsView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_