Method animate

packages/core/ui/gestures/touch-manager.ts:183–219

(definition: AnimationDefinition | TouchAnimationFn)

	static startAnimationForType(view: View, type: TouchAnimationTypes) {
		if (view) {
			const animate = function (definition: AnimationDefinition | TouchAnimationFn) {
				if (definition) {
					if (isFunction(definition)) {
						(<TouchAnimationFn>definition)(view);
					} else {
						if (!TouchManager.touchAnimationDefinitions) {
							TouchManager.touchAnimationDefinitions = [];
						}
						// reuse animations for each type
						let touchAnimation: Animation;
						// triggering animations should always cancel other animations which may be in progress
						for (const d of TouchManager.touchAnimationDefinitions) {
							if (d.view === view && d.animation) {
								d.animation.cancel();
								if (d.type === type) {
									touchAnimation = d.animation;
								}
							}
						}

						if (!touchAnimation) {
							touchAnimation = new Animation([
								{
									target: view,
									...(<AnimationDefinition>definition),
								},
							]);
							TouchManager.touchAnimationDefinitions.push({
								view,
								type,
								animation: touchAnimation,
							});
						}
						touchAnimation.play().catch(() => {});
					}
				}
			};
			// always use instance defined animation over global
			if (isObject(view.touchAnimation) && view.touchAnimation[type]) {
				animate(view.touchAnimation[type]);