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POSetting / Getting Property Values from within JQuery Plugin
 

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  1. POSetting / Getting Property Values from within JQuery Plugin
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    <p>Greetings.</p> <p>I am trying to modify Shawn Mayzes JQuery Google Maps plugin to support retrieving a "current" latlng property.</p> <p>Shawn's plugin and examples can be found here: <a href="http://www.mayzes.org/googlemaps.jquery.examples.html" rel="nofollow noreferrer">http://www.mayzes.org/googlemaps.jquery.examples.html</a></p> <p>The example on which I am focusing is "Map Geocoding Simple" (<a href="http://www.mayzes.org/fragments/new/geocode.html" rel="nofollow noreferrer">http://www.mayzes.org/fragments/new/geocode.html</a>). The relevant function within the plugin is:</p> <pre><code> if ( opts.geocode ) { geocoder = new GClientGeocoder(); geocoder.getLatLng(opts.geocode, function(center) { if (!center) { alert(address + " not found"); } else { $.googleMaps.gMap.setCenter(center, opts.depth); $.googleMaps.latitude = center.x; $.googleMaps.longitude = center.y; } }); } else { // Latitude &amp; Longitude Center Point var center = $.googleMaps.mapLatLong(opts.latitude, opts.longitude); // Set the center of the Map with the new Center Point and Depth $.googleMaps.gMap.setCenter(center, opts.depth); } </code></pre> <p>Now, what I want to do is retrieve the "center point", the lat / long value of the center point, after passing ad address to the plugin.</p> <p>So, in my code when I pass an address, thus:</p> <pre><code>$('#map').googleMaps({ geocode: add }); </code></pre> <p>I would like some means of of retrieving the lat / long like this:</p> <pre><code>$('#map').getLatLng(); </code></pre> <p>...or as a callback function within the plugin instantiation (like they do in the JQuery UI Tabs control).</p> <p>Those would be the "ideal" solutions, but in the meantime, I was willing to "content myself" with a hack. Why not use the Jquery "data" function like this?</p> <pre><code> if ( opts.geocode ) { geocoder = new GClientGeocoder(); geocoder.getLatLng(opts.geocode, function(center) { if (!center) { alert(address + " not found"); } else { alert('center--'+center); **$(this).data('latlng', center);** $.googleMaps.gMap.setCenter(center, opts.depth); $.googleMaps.latitude = center.x; $.googleMaps.longitude = center.y; } }); } else { // Latitude &amp; Longitude Center Point var center = $.googleMaps.mapLatLong(opts.latitude, opts.longitude); // Set the center of the Map with the new Center Point and Depth $.googleMaps.gMap.setCenter(center, opts.depth); } </code></pre> <p>Then I would be able to retrieve the latlng value by simply referencing:</p> <pre><code> $('#map').data('latlng'); </code></pre> <p>But, alas, this does not work at all.</p> <p>Any guidance / hints / solutions to similar problems would be of great assistance.</p> <p>Shameless</p> <p>//////////////////////////////////////////////////////// Response to Matchu ////////////////////////////////////////////////////////</p> <p>Thank you for the idea. Here is what I tried:</p> <pre><code>$.googleMaps = { mapsConfiguration: function(opts) { var ThisMap = this; // GEOCODE if ( opts.geocode ) { geocoder = new GClientGeocoder(); geocoder.getLatLng(opts.geocode, function(center) { if (!center) { alert(address + " not found"); } else { alert('center--'+center); ThisMap.data('latlng', center); $.googleMaps.gMap.setCenter(center, opts.depth);... </code></pre> <p>The "var ThisMap = this" is on Line 3 of the plugin, which seems pretty "up high" to me :)</p> <p>I try to retrieve the "latlng" using:</p> <pre><code> var map = $('#map').googleMaps({ geocode: add }); alert('latlng--'+map.data('latlng')); </code></pre> <p>I know that what needs to happen here is possible because I have used similar usage pattersn with other plugins. Unfortunately, those plugins seem to be pretty "advanced" and I have not seen an example of storing and retrieving current property values in any of the simple JQuery Plugin tutorials. Has anyone else?</p>
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    1. COTried the following for accessing the data by key: var map = $('#map').googleMaps({ geocode: add }); alert('latlng--'+map.data('latlng')); ...and this did not work, either.
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      1. POSetting / Getting Property Values from within JQuery Plugin
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