Image-source modules refactoring

image-source/image-source-common.ts

@@ -0,0 +1,37 @@
+import http = require("http");
+
+// This is used for definition purposes only, it does not generate JavaScript for it.
+import definition = require("image-source");
+
+var RESOURCE_PREFIX = "res://";
+
+export function fromResource(name: string): definition.ImageSource {
+    var image = new definition.ImageSource();
+    return image.loadFromResource(name) ? image : null;
+}
+
+export function fromFile(path: string): definition.ImageSource {
+    var image = new definition.ImageSource();
+    return image.loadFromFile(path) ? image : null;
+}
+
+export function fromData(data: any): definition.ImageSource {
+    var image = new definition.ImageSource();
+    return image.loadFromData(data) ? image : null;
+}
+
+export function fromNativeSource(source: any): definition.ImageSource {
+    var image = new definition.ImageSource();
+    return image.setNativeSource(source) ? image : null;
+}
+
+export function fromUrl(url: string): Promise<definition.ImageSource> {
+    return http.getImage(url);
+}
+
+export function fromFileOrResource(path: string): definition.ImageSource {
+    if (path.indexOf(RESOURCE_PREFIX) === 0) {
+        return fromResource(path.substr(RESOURCE_PREFIX.length));
+    }
+    return fromFile(path);
+}