| // Copyright 2020 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 WEBLAYER_BROWSER_BROWSER_CONTROLS_NAVIGATION_STATE_HANDLER_DELEGATE_H_ |
| #define WEBLAYER_BROWSER_BROWSER_CONTROLS_NAVIGATION_STATE_HANDLER_DELEGATE_H_ |
| |
| #include "cc/input/browser_controls_state.h" |
| |
| namespace weblayer { |
| |
| enum class ControlsVisibilityReason; |
| |
| // Called to propagate changse to BrowserControlsState. |
| class BrowserControlsNavigationStateHandlerDelegate { |
| public: |
| // Called when the state changes. |
| virtual void OnBrowserControlsStateStateChanged( |
| ControlsVisibilityReason reason, |
| cc::BrowserControlsState state) = 0; |
| |
| // Called when UpdateBrowserControlsState() should be called because a new |
| // navigation started. This is necessary as the browser-controls state is |
| // specific to a renderer, and each navigation may trigger a new renderer. |
| virtual void OnUpdateBrowserControlsStateBecauseOfProcessSwitch( |
| bool did_commit) = 0; |
| |
| protected: |
| virtual ~BrowserControlsNavigationStateHandlerDelegate() = default; |
| }; |
| |
| } // namespace weblayer |
| |
| #endif // WEBLAYER_BROWSER_BROWSER_CONTROLS_NAVIGATION_STATE_HANDLER_DELEGATE_H_ |