Hi list,
I asked on Friday about keyMask and got it working but unfortunately
it couldn't help in the end. I wanted my control to have those behaviors :
- on single click : "unselect" all features, then only select the
clicked feature, or only "unselect" the clicked feature if that was to
one selected.
- on ctrl+click : select/unselect multiple features at the same time.
I couldn't figure how to make that work with keyMask. It seemed that I
would not be able to make both ways working ( click with an without ctrl
key ) at the same time.
So, instead I look at control.handler.evt.ctrlKey directly. See the
code below if you're interested in comments about it.
Alexandre
/**
* Class: DeleteFeature
*/
OpenLayers.Control.DeleteFeature = OpenLayers.Class(OpenLayers.Control, {
features: null,
initialize: function(layer, options) {
OpenLayers.Control.prototype.initialize.apply(this, [options]);
this.features = [];
this.layer = layer;
this.handler = new OpenLayers.Handler.Feature(
this, layer,
{ click: this.clickFeature }//,
//{ keyMask:OpenLayers.Handler.MOD_CTRL }
);
},
clickFeature: function(feature) {
if(this.handler.evt.ctrlKey) { // multiple features selection
// if feature doesn't have a fid, destroy it
if(feature.fid == undefined) {
removeRoadInfoPopup(oLastHoverFeature); // HARDCODED adube
oLastHoverFeature = null; // HARDCODED adube
this.layer.destroyFeatures([feature]);
} else if (feature.state != OpenLayers.State.DELETE){
this.features.push(feature);
feature.state = OpenLayers.State.DELETE;
this.layer.events.triggerEvent("afterfeaturemodified",
{feature: feature});
feature.renderIntent = "select";
this.layer.drawFeature(feature);
} else {
this.features =
OpenLayers.Util.removeItem(this.features, feature);
feature.state = null;
feature.renderIntent = "default";
this.layer.drawFeature(feature);
}
} else { // single feature selection
// unselect all features but current if already selected
if (this.features.length == 1 &&
this.features[0].fid == feature.fid){
// do nothing, this feature will be removed below
} else {
for(i=0; i<this.features.length; i++){
this.features[i].state = null;
this.features[i].renderIntent = "default";
this.layer.drawFeature(this.features[i]);
}
this.features = [];
}
if(feature.fid == undefined) {
removeRoadInfoPopup(oLastHoverFeature); // HARDCODED adube
oLastHoverFeature = null; // HARDCODED adube
this.layer.destroyFeatures([feature]);
} else if (feature.state != OpenLayers.State.DELETE){
this.features.push(feature);
feature.state = OpenLayers.State.DELETE;
this.layer.events.triggerEvent("afterfeaturemodified",
{feature: feature});
feature.renderIntent = "select";
this.layer.drawFeature(feature);
} else {
this.features =
OpenLayers.Util.removeItem(this.features, feature);
feature.state = null;
feature.renderIntent = "default";
this.layer.drawFeature(feature);
}
}
},
setMap: function(map) {
this.handler.setMap(map);
OpenLayers.Control.prototype.setMap.apply(this, arguments);
},
CLASS_NAME: "OpenLayers.Control.DeleteFeature"
});
--
Alexandre Dubé
Mapgears
www.mapgears.com
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