| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_DOM_CSS_TRANSITIONS_ADAPTER_H_ |
| #define COBALT_DOM_CSS_TRANSITIONS_ADAPTER_H_ |
| |
| #include <map> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "cobalt/cssom/css_transition.h" |
| #include "cobalt/cssom/css_transition_set.h" |
| #include "cobalt/cssom/property_definitions.h" |
| #include "cobalt/web_animations/animation.h" |
| #include "cobalt/web_animations/animation_timeline.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| class DOMAnimatable; |
| |
| // This class contains logic to adapt CSS Transitions to the Web Animations |
| // framework. It watches for CSS Transition events, and handles them by |
| // appropriately creating and destroying Animation objects on the target element |
| // and timeline. |
| class CSSTransitionsAdapter : public cssom::TransitionSet::EventHandler { |
| public: |
| explicit CSSTransitionsAdapter( |
| const scoped_refptr<dom::DOMAnimatable>& target); |
| ~CSSTransitionsAdapter(); |
| |
| void OnTransitionStarted(const cssom::Transition& transition) OVERRIDE; |
| void OnTransitionRemoved(const cssom::Transition& transition) OVERRIDE; |
| |
| private: |
| // The AnimationWithEventHandler struct maintains a reference to the Animation |
| // object and also owns an Animation::EventHandler that connects animation |
| // events to this CSSTransitionsAdapter object. |
| struct AnimationWithEventHandler { |
| AnimationWithEventHandler( |
| const scoped_refptr<web_animations::Animation>& animation, |
| scoped_ptr<web_animations::Animation::EventHandler> event_handler) |
| : animation(animation), event_handler(event_handler.Pass()) {} |
| ~AnimationWithEventHandler() {} |
| |
| scoped_refptr<web_animations::Animation> animation; |
| scoped_ptr<web_animations::Animation::EventHandler> event_handler; |
| }; |
| typedef std::map<cssom::PropertyKey, AnimationWithEventHandler*> |
| PropertyValueAnimationMap; |
| |
| // Called to handle Animation events. When a transition's corresponding |
| // animation enters the after phase, we fire the transitionend event. |
| void HandleAnimationEnterAfterPhase(const cssom::Transition& transition); |
| |
| scoped_refptr<dom::DOMAnimatable> animatable_; |
| |
| // The animation map tracks animations that were created by transitions. |
| // As transitions are created and removed, we update this animation map |
| // per property value. |
| PropertyValueAnimationMap animation_map_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CSSTransitionsAdapter); |
| }; |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_CSS_TRANSITIONS_ADAPTER_H_ |