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Side by Side Diff: chrome/browser/ui/task_manager/task_manager_table_model.h

Issue 1367673003: Expose all reusable task manager view code so it can be used by Mac (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright 2015 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_TASK_MANAGER_TASK_MANAGER_TABLE_MODEL_H_
6 #define CHROME_BROWSER_UI_TASK_MANAGER_TASK_MANAGER_TABLE_MODEL_H_
7
8 #include <stdint.h>
9
10 #include "base/macros.h"
11 #include "base/memory/scoped_ptr.h"
12 #include "base/values.h"
13 #include "chrome/browser/task_management/task_manager_observer.h"
14 #include "ui/base/models/table_model.h"
15
16 namespace task_management {
17
18 class TaskManagerValuesStringifier;
19
20 // Describes how the platform specific table view is sorted.
21 struct TableSortDescriptor {
22 TableSortDescriptor();
23 TableSortDescriptor(int col_id, bool ascending);
24
25 // The ID of the sorted column, -1 if the table is not sorted.
26 int sorted_column_id;
27
28 // True if the column is sorted ascending.
29 bool is_ascending;
30 };
31
32 // An interface to be able to communicate with the platform-specific table view
33 // (Either views::TableView or NSTableView on the Mac).
34 class TableViewDelegate {
35 public:
36 TableViewDelegate() {}
37 virtual ~TableViewDelegate() {}
38
39 virtual bool IsColumnVisible(int column_id) const = 0;
40
41 virtual void SetColumnVisibility(int column_id, bool new_visibility) = 0;
42
43 virtual bool IsTableSorted() const = 0;
44
45 virtual TableSortDescriptor GetSortDescriptor() const = 0;
46
47 // As the name of |visible_column_index| implies, it must by the index of the
48 // column in the visible columns array.
49 virtual void ToggleSortOrder(int visible_column_index) = 0;
50
51 private:
52 DISALLOW_COPY_AND_ASSIGN(TableViewDelegate);
53 };
54
55 class TaskManagerTableModel
56 : public TaskManagerObserver,
57 public ui::TableModel {
58 public:
59 TaskManagerTableModel(int64_t refresh_flags, TableViewDelegate* delegate);
60 ~TaskManagerTableModel() override;
61
62 // ui::TableModel:
63 int RowCount() override;
64 base::string16 GetText(int row, int column) override;
65 gfx::ImageSkia GetIcon(int row) override;
66 void SetObserver(ui::TableModelObserver* observer) override;
67 int CompareValues(int row1, int row2, int column_id) override;
68
69 // task_management::TaskManagerObserver:
70 void OnTaskAdded(TaskId id) override;
71 void OnTaskToBeRemoved(TaskId id) override;
72 void OnTasksRefreshed(const TaskIdList& task_ids) override;
73
74 // Gets the start index and length of the group to which the task at
75 // |row_index| belongs.
76 void GetRowsGroupRange(int row_index, int* out_start, int* out_length);
77
78 // Start / stop observing the task manager.
79 void StartUpdating();
80 void StopUpdating();
81
82 // Activates the browser tab associated with the process in the specified
83 // |row_index|.
84 void ActivateTask(int row_index);
85
86 // Kills the process on which the task at |row_index| is running.
87 void KillTask(int row_index);
88
89 // Based on the given |visibility| and the |column_id|, a particular refresh
90 // type will be enabled or disabled.
91 void UpdateRefreshTypes(int column_id, bool visibility);
92
93 // Checks if the task at |row_index| is running on the browser process.
94 bool IsBrowserProcess(int row_index) const;
95
96 // Restores the saved columns settings from a previous session into
97 // |columns_settings_| and updates the table view.
98 void RetrieveSavedColumnsSettingsAndUpdateTable();
99
100 // Stores the current values in |column_settings_| to the user prefs so that
101 // it can be restored later next time the task manager view is opened.
102 void StoreColumnsSettings();
103
104 void ToggleColumnVisibility(int column_id);
105
106 private:
107 void OnRefresh();
108
109 // Checks whether the task at |row_index| is the first task in its process
110 // group of tasks.
111 bool IsTaskFirstInGroup(int row_index) const;
112
113 // The delegate that will be used to communicate with the platform-specific
114 // TableView.
115 TableViewDelegate* table_view_delegate_;
116
117 // Contains either the column settings retrieved from user preferences if it
118 // exists, or the default column settings.
119 // The columns settings are the visible columns and the last sorted column
120 // and the direction of the sort.
121 scoped_ptr<base::DictionaryValue> columns_settings_;
122
123 // The table model observer that will be set by the table view of the task
124 // manager.
125 ui::TableModelObserver* table_model_observer_;
126
127 // The sorted list of task IDs by process ID then by task ID.
128 std::vector<TaskId> tasks_;
129
130 // The owned task manager values stringifier that will be used to convert the
131 // values to string16.
132 scoped_ptr<TaskManagerValuesStringifier> stringifier_;
133
134 DISALLOW_COPY_AND_ASSIGN(TaskManagerTableModel);
135 };
136
137 } // namespace task_management
138
139 #endif // CHROME_BROWSER_UI_TASK_MANAGER_TASK_MANAGER_TABLE_MODEL_H_
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