Added ComponentDatatype.fromName

CHANGES.md

@@ -14,7 +14,7 @@ Change Log
 * Camera flights now disable collision with the terrain until all of the terrain in the area has finished loading. This prevents the camera from being moved to be above lower resolution terrain when flying to a position close to higher resolution terrain. [#4075](https://github.com/AnalyticalGraphicsInc/cesium/issues/4075)
 * Added support for Int32 and Uint32 in ComponentDatatypeSpec.
 * Added `GeocoderViewModel.keepExpanded` which when set to true will always keep the GeoCoder in its expanded state.
-
+* Added `ComponentDatatype.fromName` for getting a `ComponentDatatype` from its name.
 
 ### 1.24 - 2016-08-01
 

Source/Core/ComponentDatatype.js

@@ -151,7 +151,7 @@ define([
     };
 
     /**
-     * Gets the ComponentDatatype for the provided TypedArray instance.
+     * Gets the {@link ComponentDatatype} for the provided TypedArray instance.
      *
      * @param {TypedArray} array The typed array.
      * @returns {ComponentDatatype} The ComponentDatatype for the provided array, or undefined if the array is not a TypedArray.
@@ -297,5 +297,36 @@ define([
         }
     };
 
+    /**
+     * Get the ComponentDatatype from its name.
+     *
+     * @param {String} name The name of the ComponentDatatype.
+     * @returns {ComponentDatatype} The ComponentDatatype.
+     *
+     * @exception {DeveloperError} name is not a valid value.
+     */
+    ComponentDatatype.fromName = function(name) {
+        switch (name) {
+            case 'BYTE':
+                return ComponentDatatype.BYTE;
+            case 'UNSIGNED_BYTE':
+                return ComponentDatatype.UNSIGNED_BYTE;
+            case 'SHORT':
+                return ComponentDatatype.SHORT;
+            case 'UNSIGNED_SHORT':
+                return ComponentDatatype.UNSIGNED_SHORT;
+            case 'INT':
+                return ComponentDatatype.INT;
+            case 'UNSIGNED_INT':
+                return ComponentDatatype.UNSIGNED_INT;
+            case 'FLOAT':
+                return ComponentDatatype.FLOAT;
+            case 'DOUBLE':
+                return ComponentDatatype.DOUBLE;
+            default:
+                throw new DeveloperError('name is not a valid value.');
+        }
+    };
+
     return freezeObject(ComponentDatatype);
 });

Specs/Core/ComponentDatatypeSpec.js

@@ -149,4 +149,21 @@ defineSuite([
             ComponentDatatype.createTypedArray(ComponentDatatype.BYTE, undefined, 0, 1);
         }).toThrowDeveloperError();
     });
+
+    it('fromName works', function() {
+        expect(ComponentDatatype.fromName('BYTE')).toEqual(ComponentDatatype.BYTE);
+        expect(ComponentDatatype.fromName('UNSIGNED_BYTE')).toEqual(ComponentDatatype.UNSIGNED_BYTE);
+        expect(ComponentDatatype.fromName('SHORT')).toEqual(ComponentDatatype.SHORT);
+        expect(ComponentDatatype.fromName('UNSIGNED_SHORT')).toEqual(ComponentDatatype.UNSIGNED_SHORT);
+        expect(ComponentDatatype.fromName('INT')).toEqual(ComponentDatatype.INT);
+        expect(ComponentDatatype.fromName('UNSIGNED_INT')).toEqual(ComponentDatatype.UNSIGNED_INT);
+        expect(ComponentDatatype.fromName('FLOAT')).toEqual(ComponentDatatype.FLOAT);
+        expect(ComponentDatatype.fromName('DOUBLE')).toEqual(ComponentDatatype.DOUBLE);
+    });
+
+    it('fromName throws without name', function() {
+        expect(function() {
+            ComponentDatatype.fromName();
+        }).toThrowDeveloperError();
+    });
 });