Index: chrome/browser/ui/zoom/zoom_controller.h |
diff --git a/chrome/browser/ui/zoom/zoom_controller.h b/chrome/browser/ui/zoom/zoom_controller.h |
index 3c427a716d6956b4603ee54f1d1fe67dd4780985..fbf48edfe35ae80a10d274e0eebaaf44e4d30e8b 100644 |
--- a/chrome/browser/ui/zoom/zoom_controller.h |
+++ b/chrome/browser/ui/zoom/zoom_controller.h |
@@ -7,6 +7,7 @@ |
#include "base/basictypes.h" |
#include "base/compiler_specific.h" |
+#include "base/observer_list.h" |
#include "base/prefs/pref_member.h" |
#include "content/public/browser/host_zoom_map.h" |
#include "content/public/browser/web_contents_observer.h" |
@@ -18,13 +19,38 @@ namespace content { |
class WebContents; |
} |
-// Per-tab class to manage the Omnibox zoom icon. |
+namespace extensions { |
+class Extension; |
+} // namespace extensions |
+ |
+// Per-tab class to manage zoom changes and the Omnibox zoom icon. |
class ZoomController : public content::WebContentsObserver, |
public content::WebContentsUserData<ZoomController> { |
public: |
+ // Defines how zoom changes are handled. |
+ // |kZoomModeDefault| results in default zoom behavior, i.e. zoom changes are |
+ // handled automatically and on a per-origin basis, meaning that other |
+ // tabs navigated to the same origin will also zoom. |
+ // |kZoomModeIsolated| results in zoom changes being handled automatically, |
+ // but on a per-tab basis. Tabs in this zoom mode will not be affected by |
+ // zoom changes in other tabs, and vice versa. |
+ // |kZoomModeManual| overrides the automatic handling of zoom changes. The |
+ // |onZoomChange| event will still be dispatched, but the page will not |
+ // actually be zoomed. These zoom changes can be handled manually by |
+ // listening for the |onZoomChange| event. Zooming in this mode is also on |
+ // a per-tab basis. |
+ // |kZoomModeDisabled| disables all zooming in this tab. The tab will revert |
+ // to default (100%) zoom, and all attempted zoom changes will be ignored. |
+ enum ZoomMode { |
+ kZoomModeDefault, |
sky
2014/06/24 16:23:42
ZOOM_MODE_DEFAULT is the right name and style for
wjmaclean
2014/06/24 18:04:07
Done.
|
+ kZoomModeIsolated, |
+ kZoomModeManual, |
+ kZoomModeDisabled, |
+ }; |
+ |
virtual ~ZoomController(); |
- int zoom_percent() const { return zoom_percent_; } |
+ ZoomMode zoom_mode() const { return zoom_mode_; } |
// Convenience method to quickly check if the tab's at default zoom. |
bool IsAtDefaultZoom() const; |
@@ -32,7 +58,29 @@ class ZoomController : public content::WebContentsObserver, |
// Returns which image should be loaded for the current zoom level. |
int GetResourceForZoomLevel() const; |
- void set_observer(ZoomObserver* observer) { observer_ = observer; } |
+ const extensions::Extension* last_extension() const { |
+ return last_extension_.get(); |
+ } |
+ |
+ void AddObserver(ZoomObserver* observer); |
+ void RemoveObserver(ZoomObserver* observer); |
+ |
+ double GetZoomLevel() const; |
+ int GetZoomPercent() const; |
+ |
+ // Sets the zoom level through HostZoomMap. |
+ // Returns true on success. |
+ bool SetZoomLevel(double zoom_level); |
+ |
+ // Sets the zoom level through WebContents::SetZoomLevel(), and attributes the |
+ // zoom to |extension|. Returns a boolean flag indicating success (true) or |
+ // failure (false). |
+ bool SetZoomLevelByExtension( |
+ double zoom_level, |
+ scoped_refptr<const extensions::Extension> extension); |
+ |
+ // Sets the zoom mode, which defines zoom behavior (see enum ZoomMode). |
+ void SetZoomMode(ZoomMode zoom_mode); |
// content::WebContentsObserver overrides: |
virtual void DidNavigateMainFrame( |
@@ -51,15 +99,27 @@ class ZoomController : public content::WebContentsObserver, |
// meaning the change should apply to ~all sites. If it is not empty, the |
// change only affects sites with the given host. |
void UpdateState(const std::string& host); |
+ // Same as UpdateState, but takes into account whether a temporary zoom level |
+ // has been set on |host| when deciding whether to show the zoom notification |
+ // bubble. |
+ void UpdateStateIncludingTemporary(const std::string& host, |
+ bool is_temporary_zoom); |
- // The current zoom percentage. |
- int zoom_percent_; |
+ // The current zoom mode. |
+ ZoomMode zoom_mode_; |
+ |
+ // Current zoom level. |
+ double zoom_level_; |
// Used to access the default zoom level preference. |
DoublePrefMember default_zoom_level_; |
+ // Keeps track of the extension (if any) that initiated the last zoom change |
+ // that took effect. |
+ scoped_refptr<const extensions::Extension> last_extension_; |
+ |
// Observer receiving notifications on state changes. |
- ZoomObserver* observer_; |
+ ObserverList<ZoomObserver> observers_; |
content::BrowserContext* browser_context_; |