ng2-bootstrap/utils/triggers.js

Native Angular Bootstrap Components

import { Trigger } from './trigger.class';
var DEFAULT_ALIASES = {
    hover: ['mouseenter', 'mouseleave'],
    focus: ['focusin', 'focusout']
};
export function parseTriggers(triggers, aliases) {
    if (aliases === void 0) { aliases = DEFAULT_ALIASES; }
    var trimmedTriggers = (triggers || '').trim();
    if (trimmedTriggers.length === 0) {
        return [];
    }
    var parsedTriggers = trimmedTriggers.split(/\s+/)
        .map(function (trigger) { return trigger.split(':'); })
        .map(function (triggerPair) {
        var alias = aliases[triggerPair[0]] || triggerPair;
        return new Trigger(alias[0], alias[1]);
    });
    var manualTriggers = parsedTriggers
        .filter(function (triggerPair) { return triggerPair.isManual(); });
    if (manualTriggers.length > 1) {
        throw 'Triggers parse error: only one manual trigger is allowed';
    }
    if (manualTriggers.length === 1 && parsedTriggers.length > 1) {
        throw 'Triggers parse error: manual trigger can\'t be mixed with other triggers';
    }
    return parsedTriggers;
}
export function listenToTriggers(renderer, target, triggers, showFn, hideFn, toggleFn) {
    var parsedTriggers = parseTriggers(triggers);
    var listeners = [];
    if (parsedTriggers.length === 1 && parsedTriggers[0].isManual()) {
        return Function.prototype;
    }
    parsedTriggers.forEach(function (trigger) {
        if (trigger.open === trigger.close) {
            listeners.push(renderer.listen(target, trigger.open, toggleFn));
            return;
        }
        listeners.push(renderer.listen(target, trigger.open, showFn), renderer.listen(target, trigger.close, hideFn));
    });
    return function () { listeners.forEach(function (unsubscribeFn) { return unsubscribeFn(); }); };
}
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