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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_GLIC_WIDGET_GLIC_WINDOW_RESIZE_ANIMATION_H_
#define CHROME_BROWSER_GLIC_WIDGET_GLIC_WINDOW_RESIZE_ANIMATION_H_
#include "base/callback_list.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/gfx/animation/linear_animation.h"
#include "ui/gfx/geometry/rect_f.h"
namespace glic {
class GlicWindowController;
class GlicWindowAnimator;
// This class controls the animation of the glic window from one size to
// another. It has the following constraints that the caller must enforce:
// * The glic window and glic view must outlive instances of this class.
// * There can be at most 1 animation at any point in time.
// * Callbacks are posted when this object is destroyed and must remain valid
// until they run. This class will generally override any other changes to
// window size.
// This class deals exclusively with the widget bounds, which may be different
// than the content bounds on Windows.
class GlicWindowResizeAnimation : public gfx::LinearAnimation,
public gfx::AnimationDelegate {
public:
GlicWindowResizeAnimation(GlicWindowController* window_controller,
GlicWindowAnimator* window_animator,
const gfx::Rect& target_bounds,
base::TimeDelta duration,
base::OnceClosure destruction_callback);
GlicWindowResizeAnimation(const GlicWindowResizeAnimation&) = delete;
GlicWindowResizeAnimation& operator=(const GlicWindowResizeAnimation&) =
delete;
~GlicWindowResizeAnimation() override;
base::TimeDelta duration_left() const { return duration_left_; }
gfx::Rect target_bounds() const { return new_bounds_; }
void AnimateToState(double state) override;
void AnimationEnded(const Animation* animation) override;
// Change the target bounds only and add `callback` to the list of callbacks
// to be run on destruction.
void UpdateTargetBounds(const gfx::Rect& target_bounds,
base::OnceClosure callback);
private:
// GlicWindowAnimator owns GlicWindowResizeAnimation
// and will outlive it
const raw_ptr<GlicWindowController> window_controller_;
const raw_ptr<GlicWindowAnimator> glic_window_animator_;
const gfx::Rect initial_bounds_;
gfx::Rect new_bounds_;
base::TimeDelta duration_left_;
std::unique_ptr<base::OnceClosureList> destruction_callbacks_;
base::WeakPtrFactory<GlicWindowResizeAnimation> weak_ptr_factory_{this};
};
} // namespace glic
#endif // CHROME_BROWSER_GLIC_WIDGET_GLIC_WINDOW_RESIZE_ANIMATION_H_
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