Rob, This is an acceptable method to restore service to my broken gadget, and thanks to your team for being proactive to find a solution.
Regards, -G Gavin McDonald EVI Logistic Enterprises 604-313-3845 - VE7HXR On Wed, Apr 21, 2010 at 7:02 PM, Rob Russell <[email protected]> wrote: > I spent some time today, with the help of other developers on the iGoogle > team, coming up with a way to adapt an arbitrary gadget that relies on the > way user prefs used to be supplied with the url in type="url" gadgets. A > gadget ideally only needs the gadget API, and shouldn't rely on the way > iGoogle sends (or doesn't send) parameters in the URL query string. > > Keep in mind that what I'm suggesting is just one way to adapt such a > gadget, it's up to individual gadget developers to detemine what works for > them. I have used this to adapt one of the reported gadgets and it seems to > work fine. > > The crux of the idea is that instead of supplying an external page to wrap, > we use a type=html gadget and request the page that we want wrapped after > the gadget loads. The wrapping gadget will be cached by iGoogle. You can > consider this code a template and adapt it if you'd like to include a > loading animation or message for the user in case your server takes some > time to respond. > > I've tested this with sample data in IE6 on Windows and on Firefox. It is > just an example though and I encourage anyone that sees room for improvement > to chime in. > > The UserPrefs elements are the same as for the existing Content type=url > section, as are the Module and ModulePrefs elements. > > In the Javascript, the wrappeduserprefs variable is an array of the values > of name attributes from the UserPref elements. So for this pretend gadget, > it has prefs myname and mycolor. The type of the UserPref doesn't matter. > The wrappedpage variable is the url of the page that your Content type=url > gadget pointed at - that is the value of the href attribute on the Content > element. > > If your server code doesn't need the "up_" prefix on the parameter name > then change (most will but it could be a chance to clean up some server side > cruft) > params["up_"+userprefs[key]] = prefs.getArray(userprefs[key]); > to > params[userprefs[key]] = prefs.getArray(userprefs[key]); > > Here's the code > > <?xml version="1.0" encoding="UTF-8"?> > <Module> > <ModulePrefs title="example url iframed" /> > <UserPref name="myname" display_name="Name" default_value=""/> > <UserPref name="mycolor" display_name="Color" default_value="Red" > datatype="enum" > > <EnumValue value="Red" /> > <EnumValue value="Blue" /> > </UserPref> > <Content type="html"> > <![CDATA[ > <script type="text/javascript"> > var wrappedpage = "http://example.com/mygadget.php";; > var wrappeduserprefs = ["myname","mycolor"]; > > var prefs = new gadgets.Prefs(); > var params = {}; > > function init() { > for (key in wrappeduserprefs) { > params["up_"+wrappeduserprefs[key]] = > prefs.getArray(wrappeduserprefs[key]); > } > > document.getElementById("wrapped").src = wrappedpage + "?" + > gadgets.io.encodeValues(params); > } > > gadgets.util.registerOnLoadHandler(init); > </script> > <style> > body { > margin: 0; > padding: 0; > overflow: hidden; > } > </style> > <iframe src="" name="wrapped" id="wrapped" width="100%" height="200px" > style="border:none; margin:0; overflow:hidden; padding:0;" scrolling="no" > frameborder=0 > > </iframe> > ]]> > </Content> > </Module> > > > Rob Russell > Google Developer Relations > > -- > You received this message because you are subscribed to the Google Groups > "iGoogle Developer Forum" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-gadgets-api%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/Google-Gadgets-API?hl=en. > -- You received this message because you are subscribed to the Google Groups "iGoogle Developer Forum" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/Google-Gadgets-API?hl=en.
