Index: components/ui/zoom/zoom_controller.h |
diff --git a/components/ui/zoom/zoom_controller.h b/components/ui/zoom/zoom_controller.h |
deleted file mode 100644 |
index d8977e029af1300116b23581303d124d76b56488..0000000000000000000000000000000000000000 |
--- a/components/ui/zoom/zoom_controller.h |
+++ /dev/null |
@@ -1,204 +0,0 @@ |
-// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef COMPONENTS_UI_ZOOM_ZOOM_CONTROLLER_H_ |
-#define COMPONENTS_UI_ZOOM_ZOOM_CONTROLLER_H_ |
- |
-#include <memory> |
- |
-#include "base/compiler_specific.h" |
-#include "base/macros.h" |
-#include "base/memory/ref_counted.h" |
-#include "base/observer_list.h" |
-#include "components/prefs/pref_member.h" |
-#include "content/public/browser/host_zoom_map.h" |
-#include "content/public/browser/web_contents_observer.h" |
-#include "content/public/browser/web_contents_user_data.h" |
- |
-class ZoomControllerTest; |
- |
-namespace content { |
-class WebContents; |
-} |
- |
-namespace ui_zoom { |
-class ZoomObserver; |
- |
-class ZoomRequestClient : public base::RefCounted<ZoomRequestClient> { |
- public: |
- ZoomRequestClient() {} |
- virtual bool ShouldSuppressBubble() const = 0; |
- |
- protected: |
- virtual ~ZoomRequestClient() {} |
- |
- private: |
- friend class base::RefCounted<ZoomRequestClient>; |
- |
- DISALLOW_COPY_AND_ASSIGN(ZoomRequestClient); |
-}; |
- |
-// 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. |
- enum ZoomMode { |
- // 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. |
- ZOOM_MODE_DEFAULT, |
- // 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. |
- ZOOM_MODE_ISOLATED, |
- // 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. |
- ZOOM_MODE_MANUAL, |
- // Disables all zooming in this tab. The tab will revert to the default |
- // zoom level, and all attempted zoom changes will be ignored. |
- ZOOM_MODE_DISABLED, |
- }; |
- |
- enum RelativeZoom { |
- ZOOM_BELOW_DEFAULT_ZOOM, |
- ZOOM_AT_DEFAULT_ZOOM, |
- ZOOM_ABOVE_DEFAULT_ZOOM |
- }; |
- |
- struct ZoomChangedEventData { |
- ZoomChangedEventData(content::WebContents* web_contents, |
- double old_zoom_level, |
- double new_zoom_level, |
- ZoomController::ZoomMode zoom_mode, |
- bool can_show_bubble) |
- : web_contents(web_contents), |
- old_zoom_level(old_zoom_level), |
- new_zoom_level(new_zoom_level), |
- zoom_mode(zoom_mode), |
- can_show_bubble(can_show_bubble) {} |
- content::WebContents* web_contents; |
- double old_zoom_level; |
- double new_zoom_level; |
- ZoomController::ZoomMode zoom_mode; |
- bool can_show_bubble; |
- }; |
- |
- // Since it's possible for a WebContents to not have a ZoomController, provide |
- // a simple, safe and reliable method to find the current zoom level for a |
- // given WebContents*. |
- static double GetZoomLevelForWebContents( |
- const content::WebContents* web_contents); |
- |
- ~ZoomController() override; |
- |
- ZoomMode zoom_mode() const { return zoom_mode_; } |
- |
- // Convenience method to get default zoom level. Implemented here for |
- // inlining. |
- double GetDefaultZoomLevel() const { |
- return content::HostZoomMap::GetForWebContents(web_contents()) |
- ->GetDefaultZoomLevel(); |
- } |
- |
- // Convenience method to quickly check if the tab's at default zoom. |
- bool IsAtDefaultZoom() const; |
- |
- // Returns which image should be loaded for the current zoom level. |
- RelativeZoom GetZoomRelativeToDefault() const; |
- |
- const ZoomRequestClient* last_client() const { return last_client_.get(); } |
- |
- void AddObserver(ZoomObserver* observer); |
- void RemoveObserver(ZoomObserver* observer); |
- |
- // Used to set whether the zoom notification bubble can be shown when the |
- // zoom level is changed for this controller. Default behavior is to show |
- // the bubble. |
- void SetShowsNotificationBubble(bool can_show_bubble) { |
- can_show_bubble_ = can_show_bubble; |
- } |
- |
- // Gets the current zoom level by querying HostZoomMap (if not in manual zoom |
- // mode) or from the ZoomController local value otherwise. |
- double GetZoomLevel() const; |
- // Calls GetZoomLevel() then converts the returned value to a percentage |
- // zoom factor. |
- // Virtual for testing. |
- virtual int GetZoomPercent() const; |
- |
- // Sets the zoom level through HostZoomMap. |
- // Returns true on success. |
- bool SetZoomLevel(double zoom_level); |
- |
- // Sets the zoom level via HostZoomMap (or stores it locally if in manual zoom |
- // mode), and attributes the zoom to |client|. Returns true on success. |
- bool SetZoomLevelByClient( |
- double zoom_level, |
- const scoped_refptr<const ZoomRequestClient>& client); |
- |
- // Sets the zoom mode, which defines zoom behavior (see enum ZoomMode). |
- void SetZoomMode(ZoomMode zoom_mode); |
- |
- // Set and query whether or not the page scale factor is one. |
- void SetPageScaleFactorIsOneForTesting(bool is_one); |
- bool PageScaleFactorIsOne() const; |
- |
- // content::WebContentsObserver overrides: |
- void DidNavigateMainFrame( |
- const content::LoadCommittedDetails& details, |
- const content::FrameNavigateParams& params) override; |
- void WebContentsDestroyed() override; |
- void RenderFrameHostChanged(content::RenderFrameHost* old_host, |
- content::RenderFrameHost* new_host) override; |
- |
- protected: |
- // Protected for testing. |
- explicit ZoomController(content::WebContents* web_contents); |
- |
- private: |
- friend class content::WebContentsUserData<ZoomController>; |
- friend class ::ZoomControllerTest; |
- |
- void ResetZoomModeOnNavigationIfNeeded(const GURL& url); |
- void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change); |
- |
- // Updates the zoom icon and zoom percentage based on current values and |
- // notifies the observer if changes have occurred. |host| may be empty, |
- // 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); |
- |
- // True if changes to zoom level can trigger the zoom notification bubble. |
- bool can_show_bubble_; |
- |
- // The current zoom mode. |
- ZoomMode zoom_mode_; |
- |
- // Current zoom level. |
- double zoom_level_; |
- |
- std::unique_ptr<ZoomChangedEventData> event_data_; |
- |
- // Keeps track of the extension (if any) that initiated the last zoom change |
- // that took effect. |
- scoped_refptr<const ZoomRequestClient> last_client_; |
- |
- // Observer receiving notifications on state changes. |
- base::ObserverList<ZoomObserver> observers_; |
- |
- content::BrowserContext* browser_context_; |
- // Keep track of the HostZoomMap we're currently subscribed to. |
- content::HostZoomMap* host_zoom_map_; |
- |
- std::unique_ptr<content::HostZoomMap::Subscription> zoom_subscription_; |
- |
- DISALLOW_COPY_AND_ASSIGN(ZoomController); |
-}; |
- |
-} // namespace ui_zoom |
- |
-#endif // COMPONENTS_UI_ZOOM_ZOOM_CONTROLLER_H_ |