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Side by Side Diff: chrome/browser/ui/tab_contents/tab_contents_iterator.h

Issue 1644773003: Remove BrowserIterator (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@host-desktop-1
Patch Set: rebase Created 4 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 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_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_ 5 #ifndef CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_
6 #define CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_ 6 #define CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_
7 7
8 #include <set> 8 #include <set>
9 9
10 #include "base/macros.h" 10 #include "base/macros.h"
11 #include "chrome/browser/ui/browser_iterator.h" 11 #include "chrome/browser/ui/browser_list.h"
12 12
13 namespace content { 13 namespace content {
14 class WebContents; 14 class WebContents;
15 } 15 }
16 16
17 // Iterates through all web view hosts in all browser windows. Because the 17 // Iterates through all web view hosts in all browser windows. Because the
18 // renderers act asynchronously, getting a host through this interface does 18 // renderers act asynchronously, getting a host through this interface does
19 // not guarantee that the renderer is ready to go. Doing anything to affect 19 // not guarantee that the renderer is ready to go. Doing anything to affect
20 // browser windows or tabs while iterating may cause incorrect behavior. 20 // browser windows or tabs while iterating may cause incorrect behavior.
21 // 21 //
22 // Example: 22 // Example:
23 // for (TabContentsIterator iterator; !iterator.done(); iterator.Next()) { 23 // for (TabContentsIterator iterator; !iterator.done(); iterator.Next()) {
24 // WebContents* cur = *iterator; 24 // WebContents* cur = *iterator;
25 // -or- 25 // -or-
26 // iterator->OperationOnWebContents(); 26 // iterator->OperationOnWebContents();
27 // ... 27 // ...
28 // } 28 // }
29 class TabContentsIterator { 29 class TabContentsIterator {
30 public: 30 public:
31 TabContentsIterator(); 31 TabContentsIterator();
32 32
33 // Returns true if we are past the last Browser. 33 // Returns true if we are past the last Browser.
34 bool done() const { return cur_ == NULL; } 34 bool done() const { return cur_ == NULL; }
35 35
36 // Returns the Browser instance associated with the current 36 // Returns the Browser instance associated with the current
37 // WebContents. Valid as long as !done(). 37 // WebContents. Valid as long as !done().
38 Browser* browser() const { 38 Browser* browser() const {
39 if (!browser_iterator_.done()) 39 if (browser_iterator_ != BrowserList::GetInstance()->end())
40 return *browser_iterator_; 40 return *browser_iterator_;
41 return NULL; 41 return NULL;
42 } 42 }
43 43
44 // Returns the current WebContents, valid as long as !done(). 44 // Returns the current WebContents, valid as long as !done().
45 content::WebContents* operator->() const { 45 content::WebContents* operator->() const {
46 return cur_; 46 return cur_;
47 } 47 }
48 content::WebContents* operator*() const { 48 content::WebContents* operator*() const {
49 return cur_; 49 return cur_;
50 } 50 }
51 51
52 // Loads the next host into |cur_|. This is designed so that for the initial 52 // Loads the next host into |cur_|. This is designed so that for the initial
53 // call from the constructor, when browser_iterator_ points to the first 53 // call from the constructor, when browser_iterator_ points to the first
54 // Browser and web_view_index_ is -1, it will fill the first host. 54 // Browser and web_view_index_ is -1, it will fill the first host.
55 void Next(); 55 void Next();
56 56
57 private: 57 private:
58 // Tab index into the current Browser of the current web view. 58 // Tab index into the current Browser of the current web view.
59 int web_view_index_; 59 int web_view_index_;
60 60
61 // Current WebContents, or NULL if we're at the end of the list. This 61 // Current WebContents, or NULL if we're at the end of the list. This
62 // can be extracted given the browser iterator and index, but it's nice to 62 // can be extracted given the browser iterator and index, but it's nice to
63 // cache this since the caller may access the current host many times. 63 // cache this since the caller may access the current host many times.
64 content::WebContents* cur_; 64 content::WebContents* cur_;
65 65
66 // An iterator over all the browsers. 66 // An iterator over all the browsers.
67 chrome::BrowserIterator browser_iterator_; 67 BrowserList::const_iterator browser_iterator_;
68 68
69 DISALLOW_COPY_AND_ASSIGN(TabContentsIterator); 69 DISALLOW_COPY_AND_ASSIGN(TabContentsIterator);
70 }; 70 };
71 71
72 #endif // CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_ 72 #endif // CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_ITERATOR_H_
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