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bd591424e2
This is a pretty thin abstraction to prevent having to put magic numbers in code, doing the which/keyCode hack, and remembering to all preventDefault. Hopefully we'll expand it to handle things like shift/alt keys for components that want their own keyboard handlers (vs. going through hotkey.js).
44 lines
719 B
JavaScript
44 lines
719 B
JavaScript
var keydown_util = (function () {
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var exports = {};
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/*
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See hotkey.js for handlers that are more app-wide.
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*/
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var keys = {
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37: 'left_arrow',
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38: 'up_arrow',
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39: 'right_arrow',
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40: 'down_arrow',
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};
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exports.handle = function (opts) {
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opts.elem.keydown(function (e) {
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var key = e.which || e.keyCode;
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var key_name = keys[key];
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if (!key_name) {
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return;
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}
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if (!opts.handlers[key_name]) {
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return;
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}
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var handled = opts.handlers[key_name]();
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if (handled) {
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e.preventDefault();
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}
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});
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};
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return exports;
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}());
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if (typeof module !== 'undefined') {
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module.exports = keydown_util;
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}
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