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// Copyright (c) 2016, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
"use strict";
var _ = require('underscore');
var $ = require('jquery');
var EventEmitter = require('events');
function get(domRoot) {
var result = {};
_.each(domRoot.find(".btn"), function (a) {
var obj = $(a);
result[obj.data().bind] = obj.hasClass("active");
});
return result;
}
function Toggles(root, state) {
EventEmitter.call(this);
this.domRoot = root;
state = _.extend(get(this.domRoot), state);
this.domRoot.find('.btn')
.click(_.bind(this.onClick, this))
.each(function () {
$(this).toggleClass('active', !!state[$(this).data().bind]);
});
this.state = state;
}
_.extend(Toggles.prototype, EventEmitter.prototype);
Toggles.prototype.get = function () {
return _.clone(this.state);
};
Toggles.prototype.set = function (key, value) {
this._change(function () {
this.state[key] = value;
}.bind(this));
};
Toggles.prototype._change = function (update) {
var before = this.get();
update();
this.emit('change', before, this.get());
};
Toggles.prototype.onClick = function (event) {
var button = $(event.currentTarget);
if (button.hasClass("disabled")) return;
button.toggleClass('active');
this._change(function () {
this.state = get(this.domRoot);
}.bind(this));
};
module.exports = Toggles;