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// Copyright 2016 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_COCOA_FULLSCREEN_FULLSCREEN_TOOLBAR_ANIMATION_CONTROLLER_H_
#define CHROME_BROWSER_UI_COCOA_FULLSCREEN_FULLSCREEN_TOOLBAR_ANIMATION_CONTROLLER_H_
#import <Cocoa/Cocoa.h>
#include "base/timer/timer.h"
#include "content/public/browser/web_contents_observer.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/gfx/animation/slide_animation.h"
class FullscreenToolbarAnimationController;
@class FullscreenToolbarController;
namespace content {
class WebContents;
}
// This class provides a controller that manages the fullscreen toolbar's
// animation.
class FullscreenToolbarAnimationController
: public gfx::AnimationDelegate,
public content::WebContentsObserver {
public:
explicit FullscreenToolbarAnimationController(
FullscreenToolbarController* owner);
FullscreenToolbarAnimationController(
const FullscreenToolbarAnimationController&) = delete;
FullscreenToolbarAnimationController& operator=(
const FullscreenToolbarAnimationController&) = delete;
~FullscreenToolbarAnimationController() override;
// Called by |owner_| when the fullscreen toolbar layout is updated.
void ToolbarDidUpdate();
// Stops the animation and cancels |hide_toolbar_timer_|.
void StopAnimationAndTimer();
// Animates the toolbar in and out to show changes with the tabstrip.
// |contents| is the WebContents that's changed.
// |in_foreground| is true if the tabstrip change is done in the foreground.
void AnimateToolbarForTabstripChanges(content::WebContents* contents,
bool in_foreground);
// Animates the toolbar in if it's not fully shown.
void AnimateToolbarIn();
// Animates the toolbar out if it's not focused.
void AnimateToolbarOutIfPossible();
// Returns the fraction of the toolbar exposed at the top according to the
// animation's progress.
CGFloat GetToolbarFractionFromProgress() const;
// Returns true if |animation_| is running.
bool IsAnimationRunning() const;
// content::WebContentsObserver:
void DidFirstVisuallyNonEmptyPaint() override;
// gfx::AnimationDelegate:
void AnimationProgressed(const gfx::Animation* animation) override;
void AnimationEnded(const gfx::Animation* animation) override;
private:
// Kickstarts |hide_toolbar_timer_| if applicable. This should only be
// called after the toolbar is shown.
void StartHideTimerIfPossible();
// Our owner.
FullscreenToolbarController* __weak owner_;
// The animation of the decoration.
gfx::SlideAnimation animation_;
// Timer that will start the scrollbar's hiding animation when it reaches 0.
base::RetainingOneShotTimer hide_toolbar_timer_;
// The value that the animation should start from.
CGFloat animation_start_value_;
// True when the toolbar is dropped to show tabstrip changes.
BOOL should_hide_toolbar_after_delay_;
};
#endif // CHROME_BROWSER_UI_COCOA_FULLSCREEN_FULLSCREEN_TOOLBAR_ANIMATION_CONTROLLER_H_
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