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A11y: add functionality for prefers-reduced-motion to the timeline #876

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A11y: add functionality for prefers-reduced-motion to the timeline #876

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f2479f2
add functionality fro prefers-reduce-motion to the timeline next/prev…
Tanvez Jul 19, 2024
23732d2
updated timenav duration to match the slider
Tanvez Jul 22, 2024
c4faf84
changed location where reducedMotionEnabled is checked
Tanvez Jul 22, 2024
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21 changes: 21 additions & 0 deletions src/js/timeline/Timeline.js
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Original file line number Diff line number Diff line change
Expand Up @@ -462,6 +462,23 @@ class Timeline {

}

//Check prefered-reduced-motion - Accessibility to reduce motion if enabled in Operationg System
reducedMotionEnabled() {
const isReduced =
window.matchMedia(`(prefers-reduced-motion: reduce)`) === true ||
window.matchMedia(`(prefers-reduced-motion: reduce)`).matches ===
true
// Change duration for speed in which slides/timenav move
if(isReduced){
this._updateDisplay(this._timenav.options.height, true, 1);
this._timenav.options.duration = 1
}
else {
// revert time nav option duration back to 1000
this._timenav.options.duration = 1000
}
}

_initEvents() {
// TimeNav Events
this._timenav.on('change', this._onTimeNavChange, this);
Expand All @@ -487,6 +504,7 @@ class Timeline {
}

_onSlideChange(e) {
this.reducedMotionEnabled()
if (this.current_id != e.unique_id) {
this.current_id = e.unique_id;
this._timenav.goToId(this.current_id);
Expand All @@ -495,6 +513,7 @@ class Timeline {
}

_onTimeNavChange(e) {
this.reducedMotionEnabled()
if (this.current_id != e.unique_id) {
this.current_id = e.unique_id;
this._storyslider.goToId(this.current_id);
Expand Down Expand Up @@ -555,10 +574,12 @@ class Timeline {
}

_onStorySliderNext(e) {
this.reducedMotionEnabled()
this.fire("nav_next", e);
}

_onStorySliderPrevious(e) {
this.reducedMotionEnabled()
this.fire("nav_previous", e);
}

Expand Down