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      1 // Copyright (c) 2012 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_UI_COCOA_TASK_MANAGER_MAC_H_
      6 #define CHROME_BROWSER_UI_COCOA_TASK_MANAGER_MAC_H_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 #include <vector>
     10 
     11 #include "base/mac/scoped_nsobject.h"
     12 #include "chrome/browser/task_manager/task_manager.h"
     13 #include "chrome/browser/ui/cocoa/table_row_nsimage_cache.h"
     14 
     15 @class WindowSizeAutosaver;
     16 class TaskManagerMac;
     17 
     18 namespace gfx {
     19 class ImageSkia;
     20 }
     21 
     22 // This class is responsible for loading the task manager window and for
     23 // managing it.
     24 @interface TaskManagerWindowController :
     25   NSWindowController<NSTableViewDataSource,
     26                      NSTableViewDelegate> {
     27  @private
     28   IBOutlet NSTableView* tableView_;
     29   IBOutlet NSButton* endProcessButton_;
     30   TaskManagerMac* taskManagerObserver_;  // weak
     31   TaskManager* taskManager_;  // weak
     32   TaskManagerModel* model_;  // weak
     33 
     34   base::scoped_nsobject<WindowSizeAutosaver> size_saver_;
     35 
     36   // These contain a permutation of [0..|model_->ResourceCount() - 1|]. Used to
     37   // implement sorting.
     38   std::vector<int> viewToModelMap_;
     39   std::vector<int> modelToViewMap_;
     40 
     41   // Descriptor of the current sort column.
     42   base::scoped_nsobject<NSSortDescriptor> currentSortDescriptor_;
     43 }
     44 
     45 // Creates and shows the task manager's window.
     46 - (id)initWithTaskManagerObserver:(TaskManagerMac*)taskManagerObserver;
     47 
     48 // Refreshes all data in the task manager table.
     49 - (void)reloadData;
     50 
     51 // Callback for "Stats for nerds" link.
     52 - (IBAction)statsLinkClicked:(id)sender;
     53 
     54 // Callback for "End process" button.
     55 - (IBAction)killSelectedProcesses:(id)sender;
     56 
     57 // Callback for double clicks on the table.
     58 - (void)selectDoubleClickedTab:(id)sender;
     59 @end
     60 
     61 @interface TaskManagerWindowController (TestingAPI)
     62 - (NSTableView*)tableView;
     63 @end
     64 
     65 // This class listens to task changed events sent by chrome.
     66 class TaskManagerMac : public TaskManagerModelObserver,
     67                        public TableRowNSImageCache::Table {
     68  public:
     69   explicit TaskManagerMac(TaskManager* task_manager);
     70   virtual ~TaskManagerMac();
     71 
     72   // TaskManagerModelObserver
     73   virtual void OnModelChanged() OVERRIDE;
     74   virtual void OnItemsChanged(int start, int length) OVERRIDE;
     75   virtual void OnItemsAdded(int start, int length) OVERRIDE;
     76   virtual void OnItemsRemoved(int start, int length) OVERRIDE;
     77 
     78   // Called by the cocoa window controller when its window closes and the
     79   // controller destroyed itself. Informs the model to stop updating.
     80   void WindowWasClosed();
     81 
     82   // TableRowNSImageCache::Table
     83   virtual int RowCount() const OVERRIDE;
     84   virtual gfx::ImageSkia GetIcon(int r) const OVERRIDE;
     85 
     86   // Creates the task manager if it doesn't exist; otherwise, it activates the
     87   // existing task manager window.
     88   static void Show();
     89 
     90   // Returns the TaskManager observed by |this|.
     91   TaskManager* task_manager() { return task_manager_; }
     92 
     93   // Lazily converts the image at the given row and caches it in |icon_cache_|.
     94   NSImage* GetImageForRow(int row);
     95 
     96   // Returns the cocoa object. Used for testing.
     97   TaskManagerWindowController* cocoa_controller() { return window_controller_; }
     98 
     99  private:
    100   // The task manager.
    101   TaskManager* const task_manager_;  // weak
    102 
    103   // Our model.
    104   TaskManagerModel* const model_;  // weak
    105 
    106   // Controller of our window, destroys itself when the task manager window
    107   // is closed.
    108   TaskManagerWindowController* window_controller_;  // weak
    109 
    110   // Caches favicons for all rows. Needs to be initalized after |model_|.
    111   TableRowNSImageCache icon_cache_;
    112 
    113   // An open task manager window. There can only be one open at a time. This
    114   // is reset to NULL when the window is closed.
    115   static TaskManagerMac* instance_;
    116 
    117   DISALLOW_COPY_AND_ASSIGN(TaskManagerMac);
    118 };
    119 
    120 #endif  // CHROME_BROWSER_UI_COCOA_TASK_MANAGER_MAC_H_
    121