Re: ToolTip with LinkLayer

Hi Pradeep,

I would have the server add the OMText objects last when it returns
graphics, so they appear on top of all the other graphics.

- Don

On Friday, July 6, 2001, at 08:47 AM, PRADEEP RAMACHANDRAN wrote:

> 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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