use url to jump to an exten in 1.3 viewer?

Question

Is it possible (or can a modification be made) to have the 1.3 viewer jump/display a desired extent (and also enable disable specific layers) from a given url (so a person could e-mail a link to another person)?

example:  https://webviewer.com/flex/index.html?x=1111111&y=2222222&layer1=1&layer2=0

Thanks,

Wayne

RobertScheitlin__GISP · Answer

Daniel, Cedric's code for adding an event listener for the extent change is exactly what you need. The only thing I would do is also remove the event listener when it is not needed as shown below, no need to continue to listen for the extent when the widget is closed or minimized (you have to always consider code performance/optimization). Also there is no real need for a config xml for this simple widget so eliminate the widgetConfigLoaded and use creationComplete.

CedricDespierre_Corporon1 · Answer

Hello 🙂
Use this event:
map.addEventListener(ExtentEvent.EXTENT_CHANGE, repositionInfo); > this will call the repositionInfo function each time you move/zoom on the map.

Your code will look something like that:
private function init():void
   {
map.addEventListener(ExtentEvent.EXTENT_CHANGE, repositionInfo);
txtVersion.text = "https://server.com/flex/index.html?EXT=" + String(map.extent.xmin) + "," + String(map.extent.ymin) + "," + String(map.extent.xmax) + "," + String(map.extent.ymax);
   }

private function repositionInfo(event:Event):void { 
    txtVersion.text = "https://server.com/flex/index.html?EXT=" + String(map.extent.xmin) + "," + String(map.extent.ymin) + "," + String(map.extent.xmax) + "," + String(map.extent.ymax);
}

good luck!

DanielLewis · Answer

Robert, Thanks again. I'm now trying to create a widget that shows the URL (with extent) for the user to easily copy (into e-mail, for example). I have the widget written, but it only shows the extent for the first time it's opened. It doesn't update as the user moves around the map. How do I get it to update?