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      1 // Copyright (c) 2011 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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
      6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
      7 #pragma once
      8 
      9 #include "base/basictypes.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/string16.h"
     12 #include "ui/base/models/simple_menu_model.h"
     13 
     14 class BaseDownloadItemModel;
     15 class Browser;
     16 class DownloadItem;
     17 
     18 // DownloadShelf is an interface for platform-specific download shelf views.
     19 class DownloadShelf {
     20  public:
     21   virtual ~DownloadShelf() {}
     22 
     23   // A new download has started, so add it to our shelf. This object will
     24   // take ownership of |download_model|. Also make the shelf visible.
     25   virtual void AddDownload(BaseDownloadItemModel* download_model) = 0;
     26 
     27   // The browser view needs to know when we are going away to properly return
     28   // the resize corner size to WebKit so that we don't draw on top of it.
     29   // This returns the showing state of our animation which is set to true at
     30   // the beginning Show and false at the beginning of a Hide.
     31   virtual bool IsShowing() const = 0;
     32 
     33   // Returns whether the download shelf is showing the close animation.
     34   virtual bool IsClosing() const = 0;
     35 
     36   // Opens the shelf.
     37   virtual void Show() = 0;
     38 
     39   // Closes the shelf.
     40   virtual void Close() = 0;
     41 
     42   virtual Browser* browser() const = 0;
     43 };
     44 
     45 // Logic for the download shelf context menu. Platform specific subclasses are
     46 // responsible for creating and running the menu.
     47 class DownloadShelfContextMenu : public ui::SimpleMenuModel::Delegate {
     48  public:
     49   virtual ~DownloadShelfContextMenu();
     50 
     51   virtual DownloadItem* download() const;
     52 
     53   enum ContextMenuCommands {
     54     SHOW_IN_FOLDER = 1,  // Open a file explorer window with the item selected.
     55     OPEN_WHEN_COMPLETE,  // Open the download when it's finished.
     56     ALWAYS_OPEN_TYPE,    // Default this file extension to always open.
     57     CANCEL,              // Cancel the download.
     58     TOGGLE_PAUSE,        // Temporarily pause a download.
     59     MENU_LAST
     60   };
     61 
     62  protected:
     63   explicit DownloadShelfContextMenu(BaseDownloadItemModel* download_model);
     64 
     65   ui::SimpleMenuModel* GetInProgressMenuModel();
     66   ui::SimpleMenuModel* GetFinishedMenuModel();
     67   // Information source.
     68   DownloadItem* download_;
     69 
     70   // ui::SimpleMenuModel::Delegate implementation:
     71   virtual bool IsCommandIdEnabled(int command_id) const;
     72   virtual bool IsCommandIdChecked(int command_id) const;
     73   virtual void ExecuteCommand(int command_id);
     74   virtual bool GetAcceleratorForCommandId(int command_id,
     75                                           ui::Accelerator* accelerator);
     76   virtual bool IsItemForCommandIdDynamic(int command_id) const;
     77   virtual string16 GetLabelForCommandId(int command_id) const;
     78 
     79   // A model to control the cancel behavior.
     80   BaseDownloadItemModel* model_;
     81 
     82  private:
     83   // We show slightly different menus if the download is in progress vs. if the
     84   // download has finished.
     85   scoped_ptr<ui::SimpleMenuModel> in_progress_download_menu_model_;
     86   scoped_ptr<ui::SimpleMenuModel> finished_download_menu_model_;
     87 
     88   DISALLOW_COPY_AND_ASSIGN(DownloadShelfContextMenu);
     89 };
     90 
     91 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SHELF_H_
     92