Adjust API for properties metadata

src/demo/app/metamodel.ts

@@ -100,8 +100,10 @@ class Metadata implements Flo.ElementMetadata {
     return Promise.resolve(this.rawData.properties.find(p => p.id === property));
   }
 
-  properties() : Promise<Array<Flo.PropertyMetadata>> {
-    return Promise.resolve(this.rawData.properties);
+  properties() : Promise<Map<string,Flo.PropertyMetadata>> {
+    let propertiesMap = new Map<string, Flo.PropertyMetadata>();
+    this.rawData.properties.forEach(p => propertiesMap.set(p.id, p));
+    return Promise.resolve(propertiesMap);
   }
 
 }

src/lib/src/shared/flo.common.ts

@@ -35,7 +35,7 @@ export namespace Flo {
     readonly group : string;
     description?() : Promise<string>;
     get(property : String) : Promise<PropertyMetadata>;
-    properties() : Promise<Array<PropertyMetadata>>;
+    properties() : Promise<Map<string, PropertyMetadata>>;
     readonly metadata? : ExtraMetadata;
     readonly [propName : string] : any;
   }
@@ -218,7 +218,7 @@ export namespace Flo {
         group: group,
         unresolved: true,
         get: (property : String) => new Promise(resolve => resolve()),
-        properties: () => Promise.resolve([])
+        properties: () => Promise.resolve(new Map<string, PropertyMetadata>())
       };
     }
   }

src/lib/src/shared/flo.properties.ts

@@ -123,7 +123,7 @@ export namespace Properties {
 
     protected createProperties() : Promise<Array<Property>> {
       let metadata : Flo.ElementMetadata = this.cell.attr('metadata');
-      return Promise.resolve(metadata.properties().then(propsMetadata => propsMetadata.map(m => this.createProperty(m))));
+      return Promise.resolve(metadata.properties().then(propsMetadata => Array.from(propsMetadata.values()).map(m => this.createProperty(m))));
     }
 
     protected createProperty(metadata : Flo.PropertyMetadata) : Property {