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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ | 5 #ifndef CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ |
| 6 #define CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ | 6 #define CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include "chrome/browser/tabs/tab_strip_model.h" | 9 #include "chrome/browser/tabs/tab_strip_model.h" |
| 10 #include "chrome/common/page_transition_types.h" | 10 #include "chrome/common/page_transition_types.h" |
| 11 | 11 |
| 12 class TabContents; | 12 class TabContentsWrapper; |
| 13 | 13 |
| 14 /////////////////////////////////////////////////////////////////////////////// | 14 /////////////////////////////////////////////////////////////////////////////// |
| 15 // TabStripModelOrderController | 15 // TabStripModelOrderController |
| 16 // | 16 // |
| 17 // An object that allows different types of ordering and reselection to be | 17 // An object that allows different types of ordering and reselection to be |
| 18 // heuristics plugged into a TabStripModel. | 18 // heuristics plugged into a TabStripModel. |
| 19 // | 19 // |
| 20 class TabStripModelOrderController : public TabStripModelObserver { | 20 class TabStripModelOrderController : public TabStripModelObserver { |
| 21 public: | 21 public: |
| 22 explicit TabStripModelOrderController(TabStripModel* tabstrip); | 22 explicit TabStripModelOrderController(TabStripModel* tabstrip); |
| 23 virtual ~TabStripModelOrderController(); | 23 virtual ~TabStripModelOrderController(); |
| 24 | 24 |
| 25 // Sets the insertion policy. Default is INSERT_AFTER. | 25 // Sets the insertion policy. Default is INSERT_AFTER. |
| 26 void set_insertion_policy(TabStripModel::InsertionPolicy policy) { | 26 void set_insertion_policy(TabStripModel::InsertionPolicy policy) { |
| 27 insertion_policy_ = policy; | 27 insertion_policy_ = policy; |
| 28 } | 28 } |
| 29 TabStripModel::InsertionPolicy insertion_policy() const { | 29 TabStripModel::InsertionPolicy insertion_policy() const { |
| 30 return insertion_policy_; | 30 return insertion_policy_; |
| 31 } | 31 } |
| 32 | 32 |
| 33 // Determine where to place a newly opened tab by using the supplied | 33 // Determine where to place a newly opened tab by using the supplied |
| 34 // transition and foreground flag to figure out how it was opened. | 34 // transition and foreground flag to figure out how it was opened. |
| 35 int DetermineInsertionIndex(TabContents* new_contents, | 35 int DetermineInsertionIndex(TabContentsWrapper* new_contents, |
| 36 PageTransition::Type transition, | 36 PageTransition::Type transition, |
| 37 bool foreground); | 37 bool foreground); |
| 38 | 38 |
| 39 // Returns the index to append tabs at. | 39 // Returns the index to append tabs at. |
| 40 int DetermineInsertionIndexForAppending(); | 40 int DetermineInsertionIndexForAppending(); |
| 41 | 41 |
| 42 // Determine where to shift selection after a tab is closed. | 42 // Determine where to shift selection after a tab is closed. |
| 43 int DetermineNewSelectedIndex(int removed_index) const; | 43 int DetermineNewSelectedIndex(int removed_index) const; |
| 44 | 44 |
| 45 // Overridden from TabStripModelObserver: | 45 // Overridden from TabStripModelObserver: |
| 46 virtual void TabSelectedAt(TabContents* old_contents, | 46 virtual void TabSelectedAt(TabContentsWrapper* old_contents, |
| 47 TabContents* new_contents, | 47 TabContentsWrapper* new_contents, |
| 48 int index, | 48 int index, |
| 49 bool user_gesture); | 49 bool user_gesture); |
| 50 | 50 |
| 51 private: | 51 private: |
| 52 // Returns a valid index to be selected after the tab at |removing_index| is | 52 // Returns a valid index to be selected after the tab at |removing_index| is |
| 53 // closed. If |index| is after |removing_index|, |index| is adjusted to | 53 // closed. If |index| is after |removing_index|, |index| is adjusted to |
| 54 // reflect the fact that |removing_index| is going away. | 54 // reflect the fact that |removing_index| is going away. |
| 55 int GetValidIndex(int index, int removing_index) const; | 55 int GetValidIndex(int index, int removing_index) const; |
| 56 | 56 |
| 57 TabStripModel* tabstrip_; | 57 TabStripModel* tabstrip_; |
| 58 | 58 |
| 59 TabStripModel::InsertionPolicy insertion_policy_; | 59 TabStripModel::InsertionPolicy insertion_policy_; |
| 60 | 60 |
| 61 DISALLOW_COPY_AND_ASSIGN(TabStripModelOrderController); | 61 DISALLOW_COPY_AND_ASSIGN(TabStripModelOrderController); |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 #endif // CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ | 64 #endif // CHROME_BROWSER_TABS_TAB_STRIP_MODEL_ORDER_CONTROLLER_H_ |
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