L.Control.Button.js

/**
 *  The MIT License (MIT)
 *
 * Copyright (c) 2013 Jerroyd Moore
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

L.Control.Button = L.Control.extend({
	includes: L.Mixin.Events,
	options: {
		position: 'topleft'
	},

	initialize: function (body, options) {
		L.setOptions(this, options);

		var classNames = 'leaflet-bar leaflet-control button-control'.split('/\s+/');
		if (options && options.className) {
			classNames = classNames.concat(('' + options.className).split(/\s+/));
		}

		var button = L.DomUtil.create('div', classNames.join(' '));
		button.innerHTML = this._prepareBody(body);

		this._container = button;

		return this;
	},

	_prepareBody: function (body) {
		var code = body.replace(/^\s+|\s+$/, '');
		if (code.charAt(0) !== '<') {
			code = '<a href="javascript:;">' + code + '</a>';
		}
		return code;
	},

	isToggled: function () {
		return L.DomUtil.hasClass(this._container, this.options.toggleButton);
	},
	_fireClick: function (e) {
		this.fire('click');

		if (this.options.toggleButton) {
			var btn = this._container;
			if (this.isToggled()) {
				L.DomUtil.removeClass(this._container, this.options.toggleButton);
			} else {
				L.DomUtil.addClass(this._container, this.options.toggleButton);
			}
		}
	},
	onAdd: function (map) {
		if (this._container) {
			L.DomEvent.on(this._container, 'click', this._fireClick, this);
			var stop = L.DomEvent.stopPropagation;
			L.DomEvent.on(this._container, 'mousedown', stop)
				.on(this._container, 'touchstart', stop)
				.on(this._container, 'dblclick', stop)
				.on(this._container, 'mousewheel', stop)
				.on(this._container, 'MozMozMousePixelScroll', stop);
			this.fire('load');

			this._map = map;
		}

		return this._container;
	},
	onRemove: function (map) {
		if (this._container && this._map) {
			L.DomEvent.off(this._container, 'click', this._fireClick, this);
			L.DomEvent.off(this._container, 'mousedown', stop)
				.off(this._container, 'touchstart', stop)
				.off(this._container, 'dblclick', stop)
				.off(this._container, 'mousewheel', stop)
				.off(this._container, 'MozMozMousePixelScroll', stop);

			this.fire('unload');
			this._map = null;
		}

		return this;
	}
});

L.control.button = function (label, options) {
	return new L.Control.Button(label, options);
};