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// Copyright 2017 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 "third_party/blink/renderer/core/animation/animatable.h"
#include "third_party/blink/renderer/bindings/core/v8/unrestricted_double_or_keyframe_animation_options.h"
#include "third_party/blink/renderer/bindings/core/v8/unrestricted_double_or_keyframe_effect_options.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_get_animations_options.h"
#include "third_party/blink/renderer/core/animation/animation.h"
#include "third_party/blink/renderer/core/animation/document_animations.h"
#include "third_party/blink/renderer/core/animation/document_timeline.h"
#include "third_party/blink/renderer/core/animation/effect_input.h"
#include "third_party/blink/renderer/core/animation/effect_model.h"
#include "third_party/blink/renderer/core/animation/keyframe_effect.h"
#include "third_party/blink/renderer/core/animation/keyframe_effect_model.h"
#include "third_party/blink/renderer/core/animation/timing.h"
#include "third_party/blink/renderer/core/animation/timing_input.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/feature_policy/layout_animations_policy.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
namespace blink {
namespace {
// A helper method which is used to trigger a violation report for cases where
// the |element.animate| API is used to animate a CSS property which is blocked
// by the feature policy 'layout-animations'.
void ReportFeaturePolicyViolationsIfNecessary(
const ExecutionContext& context,
const KeyframeEffectModelBase& effect) {
for (const auto& property_handle : effect.Properties()) {
if (!property_handle.IsCSSProperty())
continue;
const auto& css_property = property_handle.GetCSSProperty();
if (LayoutAnimationsPolicy::AffectedCSSProperties().Contains(
&css_property)) {
LayoutAnimationsPolicy::ReportViolation(css_property, context);
}
}
}
UnrestrictedDoubleOrKeyframeEffectOptions CoerceEffectOptions(
UnrestrictedDoubleOrKeyframeAnimationOptions options) {
if (options.IsKeyframeAnimationOptions()) {
return UnrestrictedDoubleOrKeyframeEffectOptions::FromKeyframeEffectOptions(
options.GetAsKeyframeAnimationOptions());
} else {
return UnrestrictedDoubleOrKeyframeEffectOptions::FromUnrestrictedDouble(
options.GetAsUnrestrictedDouble());
}
}
} // namespace
// https://drafts.csswg.org/web-animations/#dom-animatable-animate
Animation* Animatable::animate(
ScriptState* script_state,
const ScriptValue& keyframes,
const UnrestrictedDoubleOrKeyframeAnimationOptions& options,
ExceptionState& exception_state) {
if (!script_state->ContextIsValid())
return nullptr;
Element* element = GetAnimationTarget();
if (!element->GetExecutionContext())
return nullptr;
KeyframeEffect* effect =
KeyframeEffect::Create(script_state, element, keyframes,
CoerceEffectOptions(options), exception_state);
if (exception_state.HadException())
return nullptr;
// Creation of the keyframe effect parses JavaScript, which could result
// in destruction of the execution context. Recheck that it is still valid.
if (!element->GetExecutionContext())
return nullptr;
ReportFeaturePolicyViolationsIfNecessary(*element->GetExecutionContext(),
*effect->Model());
if (!options.IsKeyframeAnimationOptions())
return element->GetDocument().Timeline().Play(effect);
Animation* animation;
const KeyframeAnimationOptions* options_dict =
options.GetAsKeyframeAnimationOptions();
if (!options_dict->hasTimeline()) {
animation = element->GetDocument().Timeline().Play(effect);
} else if (AnimationTimeline* timeline = options_dict->timeline()) {
animation = timeline->Play(effect);
} else {
animation = Animation::Create(element->GetExecutionContext(), effect,
nullptr, exception_state);
}
if (!animation)
return nullptr;
animation->setId(options_dict->id());
return animation;
}
Animation* Animatable::animate(ScriptState* script_state,
const ScriptValue& keyframes,
ExceptionState& exception_state) {
if (!script_state->ContextIsValid())
return nullptr;
Element* element = GetAnimationTarget();
if (!element->GetExecutionContext())
return nullptr;
KeyframeEffect* effect =
KeyframeEffect::Create(script_state, element, keyframes, exception_state);
if (exception_state.HadException())
return nullptr;
// Creation of the keyframe effect parses JavaScript, which could result
// in destruction of the execution context. Recheck that it is still valid.
if (!element->GetExecutionContext())
return nullptr;
ReportFeaturePolicyViolationsIfNecessary(*element->GetExecutionContext(),
*effect->Model());
return element->GetDocument().Timeline().Play(effect);
}
HeapVector<Member<Animation>> Animatable::getAnimations(
GetAnimationsOptions* options) {
bool use_subtree = options && options->subtree();
Element* element = GetAnimationTarget();
if (use_subtree)
element->GetDocument().UpdateStyleAndLayoutTreeForSubtree(element);
else
element->GetDocument().UpdateStyleAndLayoutTreeForNode(element);
HeapVector<Member<Animation>> animations;
if (!use_subtree && !element->HasAnimations())
return animations;
for (const auto& animation :
element->GetDocument().GetDocumentAnimations().getAnimations(
element->GetTreeScope())) {
DCHECK(animation->effect());
// TODO(gtsteel) make this use the idl properties
Element* target = To<KeyframeEffect>(animation->effect())->EffectTarget();
if (element == target || (use_subtree && element->contains(target))) {
// DocumentAnimations::getAnimations should only give us animations that
// are either current or in effect.
DCHECK(animation->effect()->IsCurrent() ||
animation->effect()->IsInEffect());
animations.push_back(animation);
}
}
return animations;
}
} // namespace blink
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