105 lines
2.9 KiB
JavaScript
105 lines
2.9 KiB
JavaScript
// A shim to implement the W3C Geolocation API Specification using Gears
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if (typeof navigator.geolocation == "undefined" || navigator.geolocation.shim ) (function(){
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// -- BEGIN GEARS_INIT
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(function() {
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// We are already defined. Hooray!
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if (window.google && google.gears) {
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return;
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}
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var factory = null;
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// Firefox
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if (typeof GearsFactory != 'undefined') {
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factory = new GearsFactory();
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} else {
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// IE
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try {
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factory = new ActiveXObject('Gears.Factory');
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// privateSetGlobalObject is only required and supported on WinCE.
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if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
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factory.privateSetGlobalObject(this);
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}
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} catch (e) {
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// Safari
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if ((typeof navigator.mimeTypes != 'undefined')
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&& navigator.mimeTypes["application/x-googlegears"]) {
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factory = document.createElement("object");
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factory.style.display = "none";
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factory.width = 0;
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factory.height = 0;
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factory.type = "application/x-googlegears";
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document.documentElement.appendChild(factory);
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}
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}
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}
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// *Do not* define any objects if Gears is not installed. This mimics the
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// behavior of Gears defining the objects in the future.
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if (!factory) {
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return;
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}
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// Now set up the objects, being careful not to overwrite anything.
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//
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// Note: In Internet Explorer for Windows Mobile, you can't add properties to
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// the window object. However, global objects are automatically added as
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// properties of the window object in all browsers.
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if (!window.google) {
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google = {};
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}
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if (!google.gears) {
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google.gears = {factory: factory};
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}
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})();
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// -- END GEARS_INIT
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var GearsGeoLocation = (function() {
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// -- PRIVATE
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var geo = google.gears.factory.create('beta.geolocation');
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var wrapSuccess = function(callback, self) { // wrap it for lastPosition love
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return function(position) {
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callback(position);
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self.lastPosition = position;
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}
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}
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// -- PUBLIC
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return {
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shim: true,
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type: "Gears",
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lastPosition: null,
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getCurrentPosition: function(successCallback, errorCallback, options) {
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var self = this;
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var sc = wrapSuccess(successCallback, self);
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geo.getCurrentPosition(sc, errorCallback, options);
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},
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watchPosition: function(successCallback, errorCallback, options) {
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geo.watchPosition(successCallback, errorCallback, options);
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},
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clearWatch: function(watchId) {
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geo.clearWatch(watchId);
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},
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getPermission: function(siteName, imageUrl, extraMessage) {
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geo.getPermission(siteName, imageUrl, extraMessage);
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}
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};
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});
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// If you have Gears installed use that
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if (window.google && google.gears) {
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navigator.geolocation = GearsGeoLocation();
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}
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})();
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