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// Copyright 2014 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.
#include "mojo/services/view_manager/animation_runner.h"
#include "base/memory/scoped_vector.h"
#include "mojo/services/view_manager/animation_runner_observer.h"
#include "mojo/services/view_manager/scheduled_animation_group.h"
#include "mojo/services/view_manager/server_view.h"
namespace view_manager {
namespace {
bool ConvertViewAndAnimationPairToScheduledAnimationGroup(
const std::vector<AnimationRunner::ViewAndAnimationPair>& views,
AnimationRunner::AnimationId id,
base::TimeTicks now,
ScopedVector<ScheduledAnimationGroup>* groups) {
for (const auto& view_animation_pair : views) {
DCHECK(view_animation_pair.second);
scoped_ptr<ScheduledAnimationGroup> group(ScheduledAnimationGroup::Create(
view_animation_pair.first, now, id, *(view_animation_pair.second)));
if (!group.get())
return false;
groups->push_back(group.release());
}
return true;
}
} // namespace
AnimationRunner::AnimationRunner(base::TimeTicks now)
: next_id_(1), last_tick_time_(now) {
}
AnimationRunner::~AnimationRunner() {
}
void AnimationRunner::AddObserver(AnimationRunnerObserver* observer) {
observers_.AddObserver(observer);
}
void AnimationRunner::RemoveObserver(AnimationRunnerObserver* observer) {
observers_.RemoveObserver(observer);
}
AnimationRunner::AnimationId AnimationRunner::Schedule(
const std::vector<ViewAndAnimationPair>& views,
base::TimeTicks now) {
DCHECK_GE(now, last_tick_time_);
const AnimationId animation_id = next_id_++;
ScopedVector<ScheduledAnimationGroup> groups;
if (!ConvertViewAndAnimationPairToScheduledAnimationGroup(views, animation_id,
now, &groups)) {
return 0;
}
// Cancel any animations for the views.
for (auto* group : groups) {
ScheduledAnimationGroup* current_group =
view_to_animation_map_.get(group->view());
if (current_group)
current_group->SetValuesToTargetValuesForPropertiesNotIn(*group);
CancelAnimationForViewImpl(group->view(), CANCEL_SOURCE_SCHEDULE);
}
for (auto* group : groups) {
group->ObtainStartValues();
view_to_animation_map_.set(group->view(), make_scoped_ptr(group));
DCHECK(!id_to_views_map_[animation_id].count(group->view()));
id_to_views_map_[animation_id].insert(group->view());
}
// |view_to_animation_map_| owns the groups.
groups.weak_clear();
FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_,
OnAnimationScheduled(animation_id));
return animation_id;
}
void AnimationRunner::CancelAnimation(AnimationId id) {
if (id_to_views_map_.count(id) == 0)
return;
std::set<ServerView*> views(id_to_views_map_[id]);
for (ServerView* view : views)
CancelAnimationForView(view);
}
void AnimationRunner::CancelAnimationForView(ServerView* view) {
CancelAnimationForViewImpl(view, CANCEL_SOURCE_CANCEL);
}
void AnimationRunner::Tick(base::TimeTicks time) {
DCHECK(time >= last_tick_time_);
last_tick_time_ = time;
if (view_to_animation_map_.empty())
return;
// The animation ids of any views whose animation completes are added here. We
// notify after processing all views so that if an observer mutates us in some
// way we're aren't left in a weird state.
std::set<AnimationId> animations_completed;
for (ViewToAnimationMap::iterator i = view_to_animation_map_.begin();
i != view_to_animation_map_.end();) {
if (i->second->Tick(time)) {
const AnimationId animation_id = i->second->id();
ServerView* view = i->first;
++i;
if (RemoveViewFromMaps(view))
animations_completed.insert(animation_id);
} else {
++i;
}
}
for (const AnimationId& id : animations_completed) {
FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_, OnAnimationDone(id));
}
}
void AnimationRunner::CancelAnimationForViewImpl(ServerView* view,
CancelSource source) {
if (!view_to_animation_map_.contains(view))
return;
const AnimationId animation_id = view_to_animation_map_.get(view)->id();
if (RemoveViewFromMaps(view)) {
// This was the last view in the group.
if (source == CANCEL_SOURCE_CANCEL) {
FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_,
OnAnimationCanceled(animation_id));
} else {
FOR_EACH_OBSERVER(AnimationRunnerObserver, observers_,
OnAnimationInterrupted(animation_id));
}
}
}
bool AnimationRunner::RemoveViewFromMaps(ServerView* view) {
DCHECK(view_to_animation_map_.contains(view));
const AnimationId animation_id = view_to_animation_map_.get(view)->id();
view_to_animation_map_.erase(view);
DCHECK(id_to_views_map_.count(animation_id));
id_to_views_map_[animation_id].erase(view);
if (!id_to_views_map_[animation_id].empty())
return false;
id_to_views_map_.erase(animation_id);
return true;
}
} // namespace view_manager
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