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interactors.js
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interactors.js
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import * as d3 from "./helpers/d3-service"
/**
* Toggles selection on clickable elements. Will set classes "selected" and "dimmed".
* @param {Number} selector A valid selector of the elements to toggle
* @example
* barChart.on('customClick', britecharts.interactors.multiToggle('rect.bar'))
*
* @return {void}
*/
export function toggleOnOff (selection, bool) {
const shouldBeSelected = typeof bool === "undefined" ? !selection.classed("selected") : bool
selection
.classed("selected", shouldBeSelected)
.classed("dimmed", !shouldBeSelected)
}
export function exclusiveToggle (othersSelection, selection) {
return toggle(othersSelection, selection, {
toggleOffIsEnabled: false,
toggleMultipleIsEnabled: false
})
}
export function toggle (othersSelection, selection, options = {toggleOffIsEnabled: false, toggleMultipleIsEnabled: false}) {
/* eslint-disable consistent-this */
let hasSelection = false
othersSelection.classed("selected", function selectedClass () {
const isSelected = this.classList.contains("selected")
const hasJustBeenClicked = this === selection.node()
let shouldBeSelected = false
if (hasJustBeenClicked) {
shouldBeSelected = options.toggleOffIsEnabled ? !isSelected : true
} else {
shouldBeSelected = options.toggleMultipleIsEnabled ? isSelected : false
}
hasSelection = hasSelection || shouldBeSelected
return shouldBeSelected
})
othersSelection.classed("dimmed", function dimmedClass () {
return hasSelection && !this.classList.contains("selected")
})
/* eslint-enable consistent-this */
}
export function blurOnEnter (selection) {
selection.on("keypress.enter", function keypress () {
if (d3.event.key === "Enter") { this.blur() }
})
}