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<script>
import { getCssClassDimensions } from '~/lib/utils/css_utils';
import Tracking from '~/tracking';
import {
JS_TOGGLE_EXPAND_CLASS,
SUPER_SIDEBAR_PEEK_OPEN_DELAY,
SUPER_SIDEBAR_PEEK_CLOSE_DELAY,
SUPER_SIDEBAR_PEEK_STATE_CLOSED as STATE_CLOSED,
SUPER_SIDEBAR_PEEK_STATE_WILL_OPEN as STATE_WILL_OPEN,
SUPER_SIDEBAR_PEEK_STATE_OPEN as STATE_OPEN,
SUPER_SIDEBAR_PEEK_STATE_WILL_CLOSE as STATE_WILL_CLOSE,
} from '../constants';
export default {
name: 'SidebarHoverPeek',
mixins: [Tracking.mixin()],
props: {
isMouseOverSidebar: {
type: Boolean,
required: false,
default: false,
},
},
created() {
// Nothing needs to observe these properties, so they are not reactive.
this.state = null;
this.openTimer = null;
this.closeTimer = null;
this.xSidebarEdge = null;
this.isMouseWithinSidebarArea = false;
},
async mounted() {
await this.$nextTick();
this.xSidebarEdge = getCssClassDimensions('super-sidebar').width;
document.addEventListener('mousemove', this.onMouseMove);
document.documentElement.addEventListener('mouseleave', this.onDocumentLeave);
document
.querySelector(`.${JS_TOGGLE_EXPAND_CLASS}`)
.addEventListener('mouseenter', this.onMouseEnter);
document
.querySelector(`.${JS_TOGGLE_EXPAND_CLASS}`)
.addEventListener('mouseleave', this.onMouseLeave);
this.changeState(STATE_CLOSED);
},
beforeDestroy() {
document.removeEventListener('mousemove', this.onMouseMove);
document.documentElement.removeEventListener('mouseleave', this.onDocumentLeave);
document
.querySelector(`.${JS_TOGGLE_EXPAND_CLASS}`)
.removeEventListener('mouseenter', this.onMouseEnter);
document
.querySelector(`.${JS_TOGGLE_EXPAND_CLASS}`)
.removeEventListener('mouseleave', this.onMouseLeave);
this.clearTimers();
},
methods: {
onMouseMove({ clientX }) {
if (clientX < this.xSidebarEdge) {
this.isMouseWithinSidebarArea = true;
} else {
this.isMouseWithinSidebarArea = false;
if (!this.isMouseOverSidebar && this.state === STATE_OPEN) {
this.willClose();
}
}
},
onDocumentLeave() {
this.isMouseWithinSidebarArea = false;
if (this.state === STATE_OPEN) {
this.willClose();
} else if (this.state === STATE_WILL_OPEN) {
this.close();
}
},
onMouseEnter() {
clearTimeout(this.closeTimer);
this.willOpen();
},
onMouseLeave() {
clearTimeout(this.openTimer);
if (this.isMouseWithinSidebarArea || this.isMouseOverSidebar) return;
this.willClose();
},
willClose() {
this.changeState(STATE_WILL_CLOSE);
this.closeTimer = setTimeout(this.close, SUPER_SIDEBAR_PEEK_CLOSE_DELAY);
},
willOpen() {
this.changeState(STATE_WILL_OPEN);
this.openTimer = setTimeout(this.open, SUPER_SIDEBAR_PEEK_OPEN_DELAY);
},
open() {
this.changeState(STATE_OPEN);
this.clearTimers();
this.track('nav_hover_peek', {
label: 'nav_sidebar_toggle',
property: 'nav_sidebar',
});
},
close() {
if (this.isMouseWithinSidebarArea) return;
this.changeState(STATE_CLOSED);
this.clearTimers();
},
clearTimers() {
clearTimeout(this.closeTimer);
clearTimeout(this.openTimer);
},
/**
* Switches to the new state, and emits a change event.
*
* If the given state is the current state, do nothing.
*
* @param {string} state The state to transition to.
*/
changeState(state) {
if (this.state === state) return;
this.state = state;
this.$emit('change', state);
},
},
render() {
return null;
},
};
</script>
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