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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/layer_animation_sequence.h"
namespace ui {
////////////////////////////////////////////////////////////////////////////////
// LayerAnimationObserver
LayerAnimationObserver::LayerAnimationObserver() {
}
LayerAnimationObserver::~LayerAnimationObserver() {
StopObserving();
}
void LayerAnimationObserver::OnLayerAnimationStarted(
LayerAnimationSequence* sequence) {}
bool LayerAnimationObserver::RequiresNotificationWhenAnimatorDestroyed() const {
return false;
}
void LayerAnimationObserver::OnAttachedToSequence(
LayerAnimationSequence* sequence) {
}
void LayerAnimationObserver::OnDetachedFromSequence(
LayerAnimationSequence* sequence) {
}
void LayerAnimationObserver::StopObserving() {
while (!attached_sequences_.empty()) {
LayerAnimationSequence* sequence = *attached_sequences_.begin();
sequence->RemoveObserver(this);
}
}
void LayerAnimationObserver::AttachedToSequence(
LayerAnimationSequence* sequence) {
DCHECK(attached_sequences_.find(sequence) == attached_sequences_.end());
attached_sequences_.insert(sequence);
OnAttachedToSequence(sequence);
}
void LayerAnimationObserver::DetachedFromSequence(
LayerAnimationSequence* sequence, bool send_notification) {
if (attached_sequences_.find(sequence) != attached_sequences_.end())
attached_sequences_.erase(sequence);
if (send_notification)
OnDetachedFromSequence(sequence);
}
////////////////////////////////////////////////////////////////////////////////
// ImplicitAnimationObserver
ImplicitAnimationObserver::ImplicitAnimationObserver() = default;
ImplicitAnimationObserver::~ImplicitAnimationObserver() = default;
void ImplicitAnimationObserver::SetActive(bool active) {
active_ = active;
CheckCompleted();
}
void ImplicitAnimationObserver::StopObservingImplicitAnimations() {
SetActive(false);
StopObserving();
}
bool ImplicitAnimationObserver::WasAnimationAbortedForProperty(
LayerAnimationElement::AnimatableProperty property) const {
return AnimationStatusForProperty(property) == ANIMATION_STATUS_ABORTED;
}
bool ImplicitAnimationObserver::WasAnimationCompletedForProperty(
LayerAnimationElement::AnimatableProperty property) const {
return AnimationStatusForProperty(property) == ANIMATION_STATUS_COMPLETED;
}
void ImplicitAnimationObserver::OnLayerAnimationEnded(
LayerAnimationSequence* sequence) {
UpdatePropertyAnimationStatus(sequence, ANIMATION_STATUS_COMPLETED);
auto weak_this = weak_factory_.GetWeakPtr();
sequence->RemoveObserver(this);
if (!weak_this)
return;
DCHECK(attached_sequences().find(sequence) == attached_sequences().end());
CheckCompleted();
}
void ImplicitAnimationObserver::OnLayerAnimationAborted(
LayerAnimationSequence* sequence) {
UpdatePropertyAnimationStatus(sequence, ANIMATION_STATUS_ABORTED);
auto weak_this = weak_factory_.GetWeakPtr();
sequence->RemoveObserver(this);
if (!weak_this)
return;
DCHECK(attached_sequences().find(sequence) == attached_sequences().end());
CheckCompleted();
}
void ImplicitAnimationObserver::OnLayerAnimationScheduled(
LayerAnimationSequence* sequence) {
if (!first_sequence_scheduled_) {
first_sequence_scheduled_ = true;
OnImplicitAnimationsScheduled();
}
}
void ImplicitAnimationObserver::OnAttachedToSequence(
LayerAnimationSequence* sequence) {
}
void ImplicitAnimationObserver::OnDetachedFromSequence(
LayerAnimationSequence* sequence) {
DCHECK(attached_sequences().find(sequence) == attached_sequences().end());
CheckCompleted();
}
void ImplicitAnimationObserver::CheckCompleted() {
if (active_ && attached_sequences().empty()) {
active_ = false;
OnImplicitAnimationsCompleted();
}
}
void ImplicitAnimationObserver::UpdatePropertyAnimationStatus(
LayerAnimationSequence* sequence,
AnimationStatus status) {
LayerAnimationElement::AnimatableProperties properties =
sequence->properties();
for (unsigned i = LayerAnimationElement::FIRST_PROPERTY;
i != LayerAnimationElement::SENTINEL;
i = i << 1) {
if (i & properties) {
LayerAnimationElement::AnimatableProperty property =
static_cast<LayerAnimationElement::AnimatableProperty>(i);
property_animation_status_[property] = status;
}
}
}
ImplicitAnimationObserver::AnimationStatus
ImplicitAnimationObserver::AnimationStatusForProperty(
LayerAnimationElement::AnimatableProperty property) const {
auto iter = property_animation_status_.find(property);
return iter == property_animation_status_.end() ? ANIMATION_STATUS_UNKNOWN :
iter->second;
}
} // namespace ui
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