[OpenLayers-Trac] [OpenLayers] #3041: event after selection with box

[OpenLayers]

#3041: event after selection with box
---------------------+------------------------------------------------------
 Reporter:  travin   |       Owner:              
     Type:  feature  |      Status:  new         
 Priority:  minor    |   Milestone:  2.11 Release
Component:  general  |     Version:  2.10        
 Keywords:           |       State:              
---------------------+------------------------------------------------------
 I'm using following feature:

 {{{
 new OpenLayers.Control.SelectFeature(wfsLayer, {
    box: true
 });
 }}}

 When I select features with a box, I can wait for the 'featureselected'
 event, but in my case I need an event triggered when all feateres in the
 box have been selected. So I added the following event to
 OpenLayers.Layer.Vector:
 'allfeaturesselectedwithbox'. I pass the following object to the event:

 {{{
 {
     features: //all selected features of the layer
 }
 }}}


 I needed two code changes for this:
 1: I added the event to EVENT_TYPES
 2: in changed the method selectBox


 {{{
 selectBox: function(position) {
         if (position instanceof OpenLayers.Bounds) {
             var minXY = this.map.getLonLatFromPixel(
                 new OpenLayers.Pixel(position.left, position.bottom)
             );
             var maxXY = this.map.getLonLatFromPixel(
                 new OpenLayers.Pixel(position.right, position.top)
             );
             var bounds = new OpenLayers.Bounds(
                 minXY.lon, minXY.lat, maxXY.lon, maxXY.lat
             );

             // if multiple is false, first deselect currently selected
 features
             if (!this.multipleSelect()) {
                 this.unselectAll();
             }

             // because we're using a box, we consider we want multiple
 selection
             var prevMultiple = this.multiple;
             this.multiple = true;
             var layers = this.layers || [this.layer];
             var layer;
             for(var l=0; l<layers.length; ++l) {
                 layer = layers[l];
                 for(var i=0, len = layer.features.length; i<len; ++i) {
                     var feature = layer.features[i];
                     // check if the feature is displayed
                     if (!feature.getVisibility()) {
                         continue;
                     }

                     if (this.geometryTypes == null ||
 OpenLayers.Util.indexOf(
                             this.geometryTypes,
 feature.geometry.CLASS_NAME) > -1) {
                         if
 (bounds.toGeometry().intersects(feature.geometry)) {
                             if
 (OpenLayers.Util.indexOf(layer.selectedFeatures, feature) == -1) {
                                 this.select(feature);
                             }
                         }
                     }
                 }

                 // MY FIX
                layer.events.triggerEvent("allfeaturesselectedwithbox", {
                     features: layer.selectedFeatures
                 });
                 // END MY FIX
             }
             this.multiple = prevMultiple;
         }
     }
 }}}

 It's an easy feature, but I thought it could be useful for other
 developers.

-- 
Ticket URL: <http://trac.openlayers.org/ticket/3041>
OpenLayers <http://openlayers.org/>
A free AJAX map viewer