1 | import { Trigger } from './trigger.class';
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2 | var DEFAULT_ALIASES = {
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3 | hover: ['mouseenter', 'mouseleave'],
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4 | focus: ['focusin', 'focusout']
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5 | };
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6 | export function parseTriggers(triggers, aliases) {
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7 | if (aliases === void 0) { aliases = DEFAULT_ALIASES; }
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8 | var trimmedTriggers = (triggers || '').trim();
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9 | if (trimmedTriggers.length === 0) {
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10 | return [];
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11 | }
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12 | var parsedTriggers = trimmedTriggers.split(/\s+/)
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13 | .map(function (trigger) { return trigger.split(':'); })
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14 | .map(function (triggerPair) {
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15 | var alias = aliases[triggerPair[0]] || triggerPair;
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16 | return new Trigger(alias[0], alias[1]);
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17 | });
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18 | var manualTriggers = parsedTriggers
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19 | .filter(function (triggerPair) { return triggerPair.isManual(); });
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20 | if (manualTriggers.length > 1) {
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21 | throw 'Triggers parse error: only one manual trigger is allowed';
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22 | }
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23 | if (manualTriggers.length === 1 && parsedTriggers.length > 1) {
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24 | throw 'Triggers parse error: manual trigger can\'t be mixed with other triggers';
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25 | }
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26 | return parsedTriggers;
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27 | }
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28 | export function listenToTriggers(renderer, target, triggers, showFn, hideFn, toggleFn) {
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29 | var parsedTriggers = parseTriggers(triggers);
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30 | var listeners = [];
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31 | if (parsedTriggers.length === 1 && parsedTriggers[0].isManual()) {
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32 | return Function.prototype;
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33 | }
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34 | parsedTriggers.forEach(function (trigger) {
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35 | if (trigger.open === trigger.close) {
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36 | listeners.push(renderer.listen(target, trigger.open, toggleFn));
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37 | return;
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38 | }
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39 | listeners.push(renderer.listen(target, trigger.open, showFn), renderer.listen(target, trigger.close, hideFn));
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40 | });
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41 | return function () { listeners.forEach(function (unsubscribeFn) { return unsubscribeFn(); }); };
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42 | }
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43 |
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