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/*
* Copyright (c) 2014 ThoughtWorks, Inc.
*
* Pixelated is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pixelated is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
*/
'use strict';
define(function () {
return Iterator;
function Iterator(elems, startingIndex) {
this.index = startingIndex || 0;
this.elems = elems;
this.hasPrevious = function () {
return this.index !== 0;
};
this.hasNext = function () {
return this.index < this.elems.length - 1;
};
this.previous = function () {
return this.elems[--this.index];
};
this.next = function () {
return this.elems[++this.index];
};
this.current = function () {
return this.elems[this.index];
};
this.hasElements = function () {
return this.elems.length > 0;
};
this.removeCurrent = function () {
var removed = this.current(),
toRemove = this.index;
if(!this.hasNext()) { this.index--; }
this.elems.remove(toRemove);
return removed;
};
}
});
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