Recover properly from a failed notes load

Patch OpenLayers so that it doesn't consider an area as loaded if
the HTTP request fails, so that it will try and load the area when
you zoom back in again.

diff --git a/vendor/assets/openlayers/OpenLayers.js b/vendor/assets/openlayers/OpenLayers.js
index ebd372e38b4bc0bd78fd089f4d37b2322cd1f317..ad5df5a32defcd77173a0605fad74c304f7beec1 100644 (file)
--- a/vendor/assets/openlayers/OpenLayers.js
+++ b/vendor/assets/openlayers/OpenLayers.js
@@ -944,8 +944,8 @@ var invalid=!this.bounds||!this.bounds.containsBounds(mapBounds);if(!invalid&&th
 return invalid;},calculateBounds:function(mapBounds){if(!mapBounds){mapBounds=this.getMapBounds();}
 var center=mapBounds.getCenterLonLat();var dataWidth=mapBounds.getWidth()*this.ratio;var dataHeight=mapBounds.getHeight()*this.ratio;this.bounds=new OpenLayers.Bounds(center.lon-(dataWidth/2),center.lat-(dataHeight/2),center.lon+(dataWidth/2),center.lat+(dataHeight/2));},triggerRead:function(options){if(this.response&&!(options&&options.noAbort===true)){this.layer.protocol.abort(this.response);this.layer.events.triggerEvent("loadend");}
 this.layer.events.triggerEvent("loadstart");this.response=this.layer.protocol.read(OpenLayers.Util.applyDefaults({filter:this.createFilter(),callback:this.merge,scope:this},options));},createFilter:function(){var filter=new OpenLayers.Filter.Spatial({type:OpenLayers.Filter.Spatial.BBOX,value:this.bounds,projection:this.layer.projection});if(this.layer.filter){filter=new OpenLayers.Filter.Logical({type:OpenLayers.Filter.Logical.AND,filters:[this.layer.filter,filter]});}
-return filter;},merge:function(resp){this.layer.destroyFeatures();var features=resp.features;if(features&&features.length>0){var remote=this.layer.projection;var local=this.layer.map.getProjectionObject();if(!local.equals(remote)){var geom;for(var i=0,len=features.length;i<len;++i){geom=features[i].geometry;if(geom){geom.transform(remote,local);}}}
-this.layer.addFeatures(features);}
+return filter;},merge:function(resp){this.layer.destroyFeatures();if(resp.code==OpenLayers.Protocol.Response.SUCCESS){var features=resp.features;if(features&&features.length>0){var remote=this.layer.projection;var local=this.layer.map.getProjectionObject();if(!local.equals(remote)){var geom;for(var i=0,len=features.length;i<len;++i){geom=features[i].geometry;if(geom){geom.transform(remote,local);}}}
+this.layer.addFeatures(features);}}else{this.bounds=null;}
 this.response=null;this.layer.events.triggerEvent("loadend");},CLASS_NAME:"OpenLayers.Strategy.BBOX"});OpenLayers.Handler.Feature=OpenLayers.Class(OpenLayers.Handler,{EVENTMAP:{'click':{'in':'click','out':'clickout'},'mousemove':{'in':'over','out':'out'},'dblclick':{'in':'dblclick','out':null},'mousedown':{'in':null,'out':null},'mouseup':{'in':null,'out':null},'touchstart':{'in':'click','out':'clickout'}},feature:null,lastFeature:null,down:null,up:null,touch:false,clickTolerance:4,geometryTypes:null,stopClick:true,stopDown:true,stopUp:false,initialize:function(control,layer,callbacks,options){OpenLayers.Handler.prototype.initialize.apply(this,[control,callbacks,options]);this.layer=layer;},touchstart:function(evt){if(!this.touch){this.touch=true;this.map.events.un({mousedown:this.mousedown,mouseup:this.mouseup,mousemove:this.mousemove,click:this.click,dblclick:this.dblclick,scope:this});}
 return OpenLayers.Event.isMultiTouch(evt)?true:this.mousedown(evt);},touchmove:function(evt){OpenLayers.Event.stop(evt);},mousedown:function(evt){if(OpenLayers.Event.isLeftClick(evt)||OpenLayers.Event.isSingleTouch(evt)){this.down=evt.xy;}
 return this.handle(evt)?!this.stopDown:true;},mouseup:function(evt){this.up=evt.xy;return this.handle(evt)?!this.stopUp:true;},click:function(evt){return this.handle(evt)?!this.stopClick:true;},mousemove:function(evt){if(!this.callbacks['over']&&!this.callbacks['out']){return true;}