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[#64,view/map] Listen to changes in documents to refresh the map

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Added new listeners to refresh the markers whenever a document(s) is
added or removed, or all documents are reset. Instead of recreating
everytime all markers, only the necessary ones are added or removed.
This commit is contained in:
amercader 2012-04-10 13:16:37 +01:00
parent 517c95f78a
commit 9f0c0d753a
1 changed files with 66 additions and 20 deletions
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86
src/view-map.js
View File

@ -35,12 +35,16 @@ my.Map = Backbone.View.extend({
var self = this;
this.el = $(this.el);
this.render();
this.model.bind('change', function() {
self._setupGeometryField();
});
this.model.currentDocuments.bind('add', function(doc){self.redraw('add',doc)});
this.model.currentDocuments.bind('remove', function(doc){self.redraw('remove',doc)});
this.model.currentDocuments.bind('reset', function(){self.redraw('reset')});
this.mapReady = false;
this.render();
},
render: function() {
@ -65,35 +69,73 @@ my.Map = Backbone.View.extend({
return this;
},
redraw: function(){
redraw: function(action,doc){
var self = this;
action = action || 'refresh';
if (this.geomReady){
if (this.model.currentDocuments.length > 0){
if (action == 'reset'){
// Clear all features
this.features.clearLayers();
var bounds = new L.LatLngBounds();
} else if (action == 'add' && doc){
// Add one or n features
this._add(doc);
} else if (action == 'remove' && doc){
// Remove one or n features
this._remove(doc);
} else if (action == 'refresh'){
// Clear and rebuild all features
this.features.clearLayers();
this._add(this.model.currentDocuments.models);
this.model.currentDocuments.forEach(function(doc){
var feature = self._getGeometryFromDocument(doc);
if (feature){
// Build popup contents
// TODO: mustache?
html = ''
for (key in doc.attributes){
html += '<div><strong>' + key + '</strong>: '+ doc.attributes[key] + '</div>'
}
feature.properties = {popupContent: html};
self.features.addGeoJSON(feature);
// TODO: bounds and center map
}
});
}
}
},
_add: function(doc){
var self = this;
if (!(doc instanceof Array)) doc = [doc];
doc.forEach(function(doc){
var feature = self._getGeometryFromDocument(doc);
if (feature){
// Build popup contents
// TODO: mustache?
html = ''
for (key in doc.attributes){
html += '<div><strong>' + key + '</strong>: '+ doc.attributes[key] + '</div>'
}
feature.properties = {popupContent: html};
// Add a reference to the model id, which will allow us to
// link this Leaflet layer to a Recline doc
feature.properties.cid = doc.cid;
self.features.addGeoJSON(feature);
}
});
},
_remove: function(doc){
var self = this;
if (!(doc instanceof Array)) doc = [doc];
doc.forEach(function(doc){
for (key in self.features._layers){
if (self.features._layers[key].cid == doc.cid){
self.features.removeLayer(self.features._layers[key]);
}
}
});
},
_getGeometryFromDocument: function(doc){
if (this.geomReady){
if (this._geomFieldName){
@ -152,6 +194,10 @@ my.Map = Backbone.View.extend({
if (e.properties && e.properties.popupContent){
e.layer.bindPopup(e.properties.popupContent);
}
if (e.properties && e.properties.cid){
e.layer.cid = e.properties.cid;
}
});
this.map.addLayer(this.features);