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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 CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ |
6 #define CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ | 6 #define CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/callback.h" | 13 #include "base/callback.h" |
14 #include "base/callback_list.h" | 14 #include "base/callback_list.h" |
15 #include "content/common/content_export.h" | 15 #include "content/common/content_export.h" |
16 #include "url/gurl.h" | 16 #include "url/gurl.h" |
17 | 17 |
18 namespace content { | 18 namespace content { |
19 | 19 |
20 class NavigationEntry; | 20 class NavigationEntry; |
21 class BrowserContext; | 21 class BrowserContext; |
22 class ResourceContext; | 22 class ResourceContext; |
| 23 class SiteInstance; |
23 class WebContents; | 24 class WebContents; |
24 | 25 |
25 // Maps hostnames to custom zoom levels. Written on the UI thread and read on | 26 // Maps hostnames to custom zoom levels. Written on the UI thread and read on |
26 // any thread. One instance per browser context. Must be created on the UI | 27 // any thread. One instance per browser context. Must be created on the UI |
27 // thread, and it'll delete itself on the UI thread as well. | 28 // thread, and it'll delete itself on the UI thread as well. |
28 // Zoom can be defined at three levels: default zoom, zoom for host, and zoom | 29 // Zoom can be defined at three levels: default zoom, zoom for host, and zoom |
29 // for host with specific scheme. Setting any of the levels leaves settings | 30 // for host with specific scheme. Setting any of the levels leaves settings |
30 // for other settings intact. Getting the zoom level starts at the most | 31 // for other settings intact. Getting the zoom level starts at the most |
31 // specific setting and progresses to the less specific: first the zoom for the | 32 // specific setting and progresses to the less specific: first the zoom for the |
32 // host and scheme pair is checked, secondly the zoom for the host only and | 33 // host and scheme pair is checked, secondly the zoom for the host only and |
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54 | 55 |
55 typedef std::vector<ZoomLevelChange> ZoomLevelVector; | 56 typedef std::vector<ZoomLevelChange> ZoomLevelVector; |
56 | 57 |
57 // Extracts the URL from NavigationEntry, substituting the error page | 58 // Extracts the URL from NavigationEntry, substituting the error page |
58 // URL in the event that the error page is showing. | 59 // URL in the event that the error page is showing. |
59 CONTENT_EXPORT static GURL GetURLFromEntry(const NavigationEntry* entry); | 60 CONTENT_EXPORT static GURL GetURLFromEntry(const NavigationEntry* entry); |
60 | 61 |
61 CONTENT_EXPORT static HostZoomMap* GetDefaultForBrowserContext( | 62 CONTENT_EXPORT static HostZoomMap* GetDefaultForBrowserContext( |
62 BrowserContext* browser_context); | 63 BrowserContext* browser_context); |
63 | 64 |
| 65 // Returns the HostZoomMap associated with this SiteInstance. The SiteInstance |
| 66 // may serve multiple WebContents, and the HostZoomMap is the same for all of |
| 67 // these WebContents. |
| 68 CONTENT_EXPORT static HostZoomMap* Get(SiteInstance* instance); |
| 69 |
| 70 // Returns the HostZoomMap associated with this WebContent's main frame. If |
| 71 // multiple WebContents share the same SiteInstance, then they share a single |
| 72 // HostZoomMap. |
| 73 CONTENT_EXPORT static HostZoomMap* GetForWebContents( |
| 74 const WebContents* contents); |
| 75 |
64 // Returns the current zoom level for the specified WebContents. May be | 76 // Returns the current zoom level for the specified WebContents. May be |
65 // temporary or host-specific. | 77 // temporary or host-specific. |
66 CONTENT_EXPORT static double GetZoomLevel(const WebContents* web_contents); | 78 CONTENT_EXPORT static double GetZoomLevel(const WebContents* web_contents); |
67 | 79 |
68 // Sets the current zoom level for the specified WebContents. The level may | 80 // Sets the current zoom level for the specified WebContents. The level may |
69 // be temporary or host-specific depending on the particular WebContents. | 81 // be temporary or host-specific depending on the particular WebContents. |
70 CONTENT_EXPORT static void SetZoomLevel(const WebContents* web_contents, | 82 CONTENT_EXPORT static void SetZoomLevel(const WebContents* web_contents, |
71 double level); | 83 double level); |
72 | 84 |
73 // Send an IPC to refresh any displayed error page's zoom levels. Needs to | 85 // Send an IPC to refresh any displayed error page's zoom levels. Needs to |
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150 virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback( | 162 virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback( |
151 const ZoomLevelChangedCallback& callback) = 0; | 163 const ZoomLevelChangedCallback& callback) = 0; |
152 | 164 |
153 protected: | 165 protected: |
154 virtual ~HostZoomMap() {} | 166 virtual ~HostZoomMap() {} |
155 }; | 167 }; |
156 | 168 |
157 } // namespace content | 169 } // namespace content |
158 | 170 |
159 #endif // CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ | 171 #endif // CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_ |
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