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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_ZOOM_ZOOM_VIEW_CONTROLLER_H_
#define CHROME_BROWSER_UI_VIEWS_ZOOM_ZOOM_VIEW_CONTROLLER_H_
#include "components/tabs/public/tab_interface.h"
namespace content {
class WebContents;
}
namespace zoom {
// This class updates the corresponding page action to reflect the current zoom
// level in a given tab. In addition, it helps to show the ZoomBubbleView base
// on the current state.
class ZoomViewController {
public:
explicit ZoomViewController(tabs::TabInterface& tab_interface);
ZoomViewController(const ZoomViewController&) = delete;
ZoomViewController& operator=(const ZoomViewController&) = delete;
~ZoomViewController();
// This is a wrapper that invokes `UpdatePageActionIcon` and
// `UpdateBubbleVisibility` in the correct order.
void UpdatePageActionIconAndBubbleVisibility(bool prefer_to_show_bubble,
bool from_user_gesture);
// Updates the page action icon, tooltip, and visibility based on
// the current zoom state (below/above default). Does NOT show/hide the
// bubble.
void UpdatePageActionIcon(bool is_bubble_visible);
// Shows or hides the bubble depending on whether `prefer_to_show_bubble` is
// true and whether we are at default zoom, etc. When showing the bubble,
// `from_user_gesture` indicates if a direct user action triggered this.
void UpdateBubbleVisibility(bool prefer_to_show_bubble,
bool from_user_gesture);
private:
bool IsBubbleVisible() const;
// Determines if the page action should be visible under the current zoom
// conditions, factoring in whether the bubble is already visible or allowed.
bool CanBubbleBeVisible(bool prefer_to_show_bubble,
bool is_zoom_at_default) const;
// Helper to retrieve the active WebContents from the tab.
content::WebContents* GetWebContents() const;
// Because zoom settings are per-tab, we store the tab interface by reference.
// The TabInterface is guaranteed valid for this object’s lifetime.
const raw_ref<tabs::TabInterface> tab_interface_;
};
} // namespace zoom
#endif // CHROME_BROWSER_UI_VIEWS_ZOOM_ZOOM_VIEW_CONTROLLER_H_
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