Hello.
I dit not use eDraw, because I don't really like it/don't want this layers structure.
I'ts probably similar, but I did as follows in the standard Draw Widget, in order to save and load a drawing (to/from file):
var graphics = this._getAllGraphics();
var jsonString = "[";
array.forEach(graphics, lang.hitch(this, function(g){
jsonString = jsonString + "{\"geotype\":\"" + g.geometry.geoType + "\",\"graphic\":" + jsonRef.toJson(g.toJson()) + "},";
}));
jsonString = jsonString.substring(0, jsonString.length - 1) + "]";
var filename = "Drawing.json";
return CSVUtils._download(filename, jsonString);
jsonRef refers to 'dojox/json/ref' and CSVUtils to 'jimu/CSVUtils'
And to import a JSON string/file:
var objects = jsonRef.fromJson(evt.target.result);
for(var i = 0; i < objects.length; i++) {
var parsedGraphic = new Graphic(objects.graphic);
var geoType = objects.geotype;
this._onDrawEnd(parsedGraphic, geoType, null);
}
evt.target.result comes for a Reader object (onload event)
