[OpenLayers-Users] Control activate and deactivate events

[Robert Sanson]

Hi George
 
Here is how I specify the controls:
 
//Select, Draw and Modify controls - these are specific to the layer
              controls = {
                select: new OpenLayers.Control.SelectFeature(crops, {callbacks: {'over':feature_info}}),
                dpolygon: new OpenLayers.Control.DrawFeature(crops,OpenLayers.Handler.Polygon),
                modify: new OpenLayers.Control.ModifyFeature(crops),
                delf: new OpenLayers.Control.SelectFeature(crops, {onSelect: function(feature) {crops.destroyFeatures([feature])}})
                //delf: new OpenLayers.Control.SelectFeature(crops, {onSelect: function(feature) {feature.geometry.destroy();crops.eraseFeatures([feature])}})
              };
              for(var key in controls) {
                map.addControl(controls[key]);
              }
 
Then I have a function that responds to radio buttons in a div outside the map that sets the mode and activates or deactivates the controls:
 
 function toggleControl(element) {
              mode = element.value;
              OpenLayers.Util.getElement('comments').innerHTML = "Mode:" + mode;
              if ((mode == "select") || (mode == "modify")){
                crop_style.strokeColor = "#0000ff";
              }
              else {
                crop_style.strokeColor = "#ff0000";
              }
              for(key in controls) {
                var control = controls[key];
                if(element.value == key && element.checked) {
                    control.activate();
                } else {
                    control.deactivate();
                }
              }
              crops.onFeatureInsert = function(feature) {
                feature.attributes.prop0 = 'new'; //This should be modified to get actual ID
                alert("New crop area inserted");
              }
            }

Hope that helps.
 
Robert S
>>> Geo-rge <George at muammar.net> 28/05/2009 8:41 a.m. >>>

Dear List,

I am having trouble trying to capture events when the ModifyFeature control
is activated and deactivated.

I define my control as such:

   modify =  new
OpenLayers.Control.ModifyFeature(lyrPlanning,{'displayClass':
'olControlModifyFeature',
   'mode': OpenLayers.Control.ModifyFeature.RESHAPE |
OpenLayers.Control.ModifyFeature.DRAG  |
OpenLayers.Control.ModifyFeature.ROTATE});

I try to register the event like this:
  modify.events.register('deactivate',modify,modify_deactivated);

this last line causes a syntax error!

I had already defined
function modify_deactivated() {alert('!');}"

I have that feeling that I am doing something so silly I will never get it.
Appreciate any help

George Mu'ammar
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