googlemap.js

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/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.widget.GoogleMap");
dojo.require("dojo.event.*");
dojo.require("dojo.math");
dojo.require("dojo.widget.*");
dojo.require("dojo.uri.Uri");
dojo.require("dojo.widget.HtmlWidget");
(function () {
	var gkey = djConfig["gMapKey"] || djConfig["googleMapKey"];
	var uri = new dojo.uri.Uri(window.location.href);
	if (uri.host == "www.dojotoolkit.org") {
		gkey = "ABQIAAAACUNdgv_7FGOmUslbm9l6_hRqjp7ri2mNiOEYqetD3xnFHpt5rBSjszDd1sdufPyQKUTyCf_YxoIxvw";
	} else {
		if (uri.host == "blog.dojotoolkit.org") {
			gkey = "ABQIAAAACUNdgv_7FGOmUslbm9l6_hSkep6Av1xaMhVn3yCLkorJeXeLARQ6fammI_P3qSGleTJhoI5_1JmP_Q";
		} else {
			if (uri.host == "archive.dojotoolkit.org") {
				gkey = "ABQIAAAACUNdgv_7FGOmUslbm9l6_hTaQpDt0dyGLIHbXMPTzg1kWeAfwRTwZNyrUfbfxYE9yIvRivEjcXoDTg";
			} else {
				if (uri.host == "dojotoolkit.org") {
					gkey = "ABQIAAAACUNdgv_7FGOmUslbm9l6_hSaOaO_TgJ5c3mtQFnk5JO2zD5dZBRZk-ieqVs7BORREYNzAERmcJoEjQ";
				}
			}
		}
	}
	if (!dojo.hostenv.post_load_) {
		if (!gkey || gkey == "") {
			dojo.raise("dojo.widget.GoogleMap: The Google Map widget requires a proper API key in order to be used.");
		}
		var tag = "<scr" + "ipt src='http://maps.google.com/maps?file=api&amp;v=2&amp;key=" + gkey + "'></scri" + "pt>";
		if (!dj_global["GMap2"]) {
			document.write(tag);
		}
	} else {
		dojo.debug("Cannot initialize Google Map system after the page has been loaded! Please either manually include the script block provided by Google in your page or require() the GoogleMap widget before onload has fired.");
	}
})();
dojo.widget.defineWidget("dojo.widget.GoogleMap", dojo.widget.HtmlWidget, function () {
	this.map = null;
	this.geocoder = null;
	this.data = [];
	this.datasrc = "";
	this.controls = ["largemap", "scale", "maptype"];
}, {templatePath:null, templateCssPath:null, isContainer:false, _defaultPoint:{lat:39.10662, lng:-94.578209}, setControls:function () {
	var methodmap = {largemap:GLargeMapControl, smallmap:GSmallMapControl, smallzoom:GSmallZoomControl, scale:GScaleControl, maptype:GMapTypeControl, overview:GOverviewMapControl};
	for (var i = 0; i < this.controls.length; i++) {
		this.map.addControl(new (methodmap[this.controls[i].toLowerCase()])());
	}
}, findCenter:function (bounds) {
	if (this.data.length == 1) {
		return (new GLatLng(this.data[0].lat, this.data[0].lng));
	}
	var clat = (bounds.getNorthEast().lat() + bounds.getSouthWest().lat()) / 2;
	var clng = (bounds.getNorthEast().lng() + bounds.getSouthWest().lng()) / 2;
	return (new GLatLng(clat, clng));
}, createPinpoint:function (pt, overlay) {
	var m = new GMarker(pt);
	if (overlay) {
		GEvent.addListener(m, "click", function () {
			m.openInfoWindowHtml("<div>" + overlay + "</div>");
		});
	}
	return m;
}, plot:function (obj) {
	var p = new GLatLng(obj.lat, obj.lng);
	var d = obj.description || null;
	var m = this.createPinpoint(p, d);
	this.map.addOverlay(m);
}, plotAddress:function (address) {
	var self = this;
	this.geocoder.getLocations(address, function (response) {
		if (!response || response.Status.code != 200) {
			alert("The address \"" + address + "\" was not found.");
			return;
		}
		var obj = {lat:response.Placemark[0].Point.coordinates[1], lng:response.Placemark[0].Point.coordinates[0], description:response.Placemark[0].address};
		self.data.push(obj);
		self.render();
	});
}, parse:function (table) {
	this.data = [];
	var h = table.getElementsByTagName("thead")[0];
	if (!h) {
		return;
	}
	var a = [];
	var cols = h.getElementsByTagName("td");
	if (cols.length == 0) {
		cols = h.getElementsByTagName("th");
	}
	for (var i = 0; i < cols.length; i++) {
		var c = cols[i].innerHTML.toLowerCase();
		if (c == "long") {
			c = "lng";
		}
		a.push(c);
	}
	var b = table.getElementsByTagName("tbody")[0];
	if (!b) {
		return;
	}
	for (var i = 0; i < b.childNodes.length; i++) {
		if (!(b.childNodes[i].nodeName && b.childNodes[i].nodeName.toLowerCase() == "tr")) {
			continue;
		}
		var cells = b.childNodes[i].getElementsByTagName("td");
		var o = {};
		for (var j = 0; j < a.length; j++) {
			var col = a[j];
			if (col == "lat" || col == "lng") {
				o[col] = parseFloat(cells[j].innerHTML);
			} else {
				o[col] = cells[j].innerHTML;
			}
		}
		this.data.push(o);
	}
}, render:function () {
	if (this.data.length == 0) {
		this.map.setCenter(new GLatLng(this._defaultPoint.lat, this._defaultPoint.lng), 4);
		return;
	}
	this.map.clearOverlays();
	var bounds = new GLatLngBounds();
	var d = this.data;
	for (var i = 0; i < d.length; i++) {
		bounds.extend(new GLatLng(d[i].lat, d[i].lng));
	}
	var zoom = Math.min((this.map.getBoundsZoomLevel(bounds) - 1), 14);
	this.map.setCenter(this.findCenter(bounds), zoom);
	for (var i = 0; i < this.data.length; i++) {
		this.plot(this.data[i]);
	}
}, initialize:function (args, frag) {
	if (this.datasrc) {
		this.parse(dojo.byId(this.datasrc));
	} else {
		if (this.domNode.getElementsByTagName("table")[0]) {
			this.parse(this.domNode.getElementsByTagName("table")[0]);
		}
	}
}, postCreate:function () {
	while (this.domNode.childNodes.length > 0) {
		this.domNode.removeChild(this.domNode.childNodes[0]);
	}
	if (this.domNode.style.position != "absolute") {
		this.domNode.style.position = "relative";
	}
	this.map = new GMap2(this.domNode);
	try {
		this.geocoder = new GClientGeocoder();
	}
	catch (ex) {
	}
	this.render();
	this.setControls();
}});