RE: ToolTip with LinkLayer

Thanks Mark,

I did use the findClosest with the LinkLayer registered for the SelectMouseMode, but what I couldn't retreive corretcly on the client( LinkLayer ) was the AppObject for the LinkOMGraphicList, even though I was setting it for the graphics from the server.

That was when the LinkProperties came handy, I added the String I required displayed as a ToolTip as a LPC_GRAPHICID ( any key would do ) property to the LinkProperties before the LinkServer wrote the graphics onto the Link.

Then from client I could use the findClosest and then use the getProperty for the LPC_GRAPHICID key on the closest graphic.With the value retreived I could fire an InfoLine message or a ToolTip.

What I am looking at now is to bring to front any OMText objects that I add with the LinkOMGraphicList. These are added to the graphic list during a MouseEvent, say a mouse click . But they seem to be covered by the graphics for the countries.

Any thoughts ... ?!

Regards,
Pradeep.

--
On Thu, 5 Jul 2001 07:46:30   
 Mark Bucciarelli wrote:
>To get the layer to respond to mouse events in SelectMouseMode, add
>that mode to the array returned by the getMouseModeServiceList() 
>method.  I think you have to create your own layer subclass to do 
>this.
>
>Once the layer responds to SelectMouseMode events you can customize
>the MouseMoved(MouseEvent) method for that layer to fire a tool
>tip request, something like this:
>
>  public boolean mouseMoved(MouseEvent evt)
>  {
>    if (!isVisible()) return false;
>    Location loc = findClosestLocation(evt);
>    if (loc != null)
>    {
>      InfoDisplayEvent info = new InfoDisplayEvent(this, loc.getName());
>      fireRequestToolTip(evt, loc.getName());
>    }
>    else
>      fireHideToolTip(evt);
>
>    return loc == null;
>  }
>
>This code is for a location layer, so there may not be an equivalent 
>method to findClosestLocation() (findClosestLink()?).  Also, the 
>SelectMouseMode is set to consume events, so if some other object is
>registered higher in the queue than the layer, and that object consumes
>the mouseMoved event, the layer will not get it.  What I did to get 
>around this was to modify the NavMouseMode class to not consume events.
>It's a hack, I probably should subclass to do this right.
>
>What's cool about this is that once you dig in this far, you can mess
>around with all the other mouse events, and do things like fire pop-up 
>menu on a right click and whatever else UI candy you can think of.
>
>--
>Mark Bucciarelli    Peregrine Systems, Inc.       R&D, Boston
>(413) 253-0020      mbucciarelli@peregrine.com    Yahoo: m_bucciarelli
>http://www.peregrine.com 
>
>> -----Original Message-----
>> From: PRADEEP RAMACHANDRAN [mailto:arpradeep@lycos.com]
>> Sent: Thursday, July 05, 2001 10:13 AM
>> To: openmap-users@bbn.com
>> Subject: ToolTip with LinkLayer 
>> 
>> 
>> Hello,
>> 
>> Can the LinkLayer be made to fireToolTip messages
>> or InfoLine messages when in SelectMouseMode. I am
>> looking for a functionality similar to that in the
>> AreaShapeLayer where the abbreviated country names
>> appear on the InformationDelegator in gesture mode.
>> 
>> Would it be correct to say that the only way to have
>> this done would be to associate an AppObject with the 
>> LinkOMGraphicList for the LinkServer and have the  
>> names created from reading a CSVFile record for the 
>> corresponding shapefile record? 
>> 
>> I couldn't figure out what to expect when the Gestures
>> mode is active in the LinkLayer. Is there some behaviour
>> that can be observed for the layer when in gesture mode?
>> 
>> Thanks,
>> Pradeep.
>> 
>> 
>> 
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>
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