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be83c0ee74
Towards fixing #865. This adds an IO class for detecting the mouse wheel being scrolled. Basic tests are included; they mock the runtime to see what blocks are activated by scrolling.
28 lines
663 B
JavaScript
28 lines
663 B
JavaScript
class MouseWheel {
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constructor (runtime) {
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/**
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* Reference to the owning Runtime.
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* @type{!Runtime}
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*/
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this.runtime = runtime;
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}
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/**
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* Mouse wheel DOM event handler.
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* @param {object} data Data from DOM event.
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*/
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postData (data) {
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const matchFields = {};
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if (data.deltaY < 0) {
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matchFields.KEY_OPTION = 'up arrow';
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} else if (data.deltaY > 0) {
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matchFields.KEY_OPTION = 'down arrow';
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} else {
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return;
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}
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this.runtime.startHats('event_whenkeypressed', matchFields);
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}
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}
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module.exports = MouseWheel;
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