mirror of https://github.com/anoshenko/rui.git
122 lines
3.2 KiB
Go
122 lines
3.2 KiB
Go
package rui
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func (animation *animationData) Start(view View, listener func(view View, animation Animation, event string)) bool {
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if view == nil {
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ErrorLog("nil View in animation.Start() function")
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return false
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}
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if !animation.hasAnimatedProperty() {
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return false
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}
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animation.view = view
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animation.listener = listener
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animation.oldAnimation = nil
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if value := view.Get(AnimationTag); value != nil {
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if oldAnimation, ok := value.([]Animation); ok && len(oldAnimation) > 0 {
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animation.oldAnimation = oldAnimation
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}
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}
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animation.oldListeners = map[string][]func(View, string){}
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setListeners := func(event string, listener func(View, string)) {
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var listeners []func(View, string) = nil
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if value := view.Get(event); value != nil {
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if oldListeners, ok := value.([]func(View, string)); ok && len(oldListeners) > 0 {
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listeners = oldListeners
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}
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}
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if listeners == nil {
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view.Set(event, listener)
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} else {
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animation.oldListeners[event] = listeners
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view.Set(event, append(listeners, listener))
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}
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}
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setListeners(AnimationStartEvent, animation.onAnimationStart)
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setListeners(AnimationEndEvent, animation.onAnimationEnd)
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setListeners(AnimationCancelEvent, animation.onAnimationCancel)
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setListeners(AnimationIterationEvent, animation.onAnimationIteration)
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view.Set(AnimationTag, animation)
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return true
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}
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func (animation *animationData) finish() {
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if animation.view != nil {
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for _, event := range []string{AnimationStartEvent, AnimationEndEvent, AnimationCancelEvent, AnimationIterationEvent} {
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if listeners, ok := animation.oldListeners[event]; ok {
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animation.view.Set(event, listeners)
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} else {
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animation.view.Remove(event)
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}
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}
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if animation.oldAnimation != nil {
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animation.view.Set(AnimationTag, animation.oldAnimation)
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animation.oldAnimation = nil
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} else {
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animation.view.Set(AnimationTag, "")
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}
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animation.oldListeners = map[string][]func(View, string){}
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animation.view = nil
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animation.listener = nil
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}
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}
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func (animation *animationData) Stop() {
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animation.onAnimationCancel(animation.view, "")
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}
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func (animation *animationData) Pause() {
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if animation.view != nil {
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animation.view.Set(AnimationPaused, true)
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}
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}
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func (animation *animationData) Resume() {
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if animation.view != nil {
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animation.view.Remove(AnimationPaused)
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}
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}
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func (animation *animationData) onAnimationStart(view View, _ string) {
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if animation.view != nil && animation.listener != nil {
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animation.listener(animation.view, animation, AnimationStartEvent)
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}
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}
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func (animation *animationData) onAnimationEnd(view View, _ string) {
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if animation.view != nil {
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animationView := animation.view
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listener := animation.listener
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animation.finish()
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if listener != nil {
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listener(animationView, animation, AnimationEndEvent)
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}
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}
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}
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func (animation *animationData) onAnimationIteration(view View, _ string) {
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if animation.view != nil && animation.listener != nil {
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animation.listener(animation.view, animation, AnimationIterationEvent)
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}
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}
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func (animation *animationData) onAnimationCancel(view View, _ string) {
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if animation.view != nil {
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animationView := animation.view
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listener := animation.listener
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animation.finish()
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if listener != nil {
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listener(animationView, animation, AnimationCancelEvent)
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}
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}
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}
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