Rift.IO OSM R1 Initial Submission

[osm/UI.git] / skyquake / plugins / composer / src / src / libraries / UniqueId.js

diff --git a/skyquake/plugins/composer/src/src/libraries/UniqueId.js b/skyquake/plugins/composer/src/src/libraries/UniqueId.js
new file mode 100644 (file)
index 0000000..8f7344e
--- /dev/null
+++ b/skyquake/plugins/composer/src/src/libraries/UniqueId.js
@@ -0,0 +1,52 @@
+/**
+ * Created by onvelocity on 2/12/16.
+ */
+'use strict';
+import d3 from 'd3'
+import guid from './guid'
+import DescriptorModel from './model/DescriptorModel'
+export default class UID {
+
+       static get propertyName() {
+               return ':uid';
+       }
+
+       static create() {
+               return guid();
+       }
+
+       static from(obj) {
+               if (!obj || /undefined|null/.test(obj)) {
+                       return;
+               }
+               if (obj instanceof DescriptorModel) {
+                       // a descriptor instance
+                       return obj.uid;
+               }
+               if (obj.dataset && obj.dataset.uid) {
+                       // DOM Element
+                       obj = obj.dataset.uid;
+               } else if (obj.__data__ && obj.__data__.uid) {
+                       // d3 managed element
+                       obj = obj.__data__.uid;
+               } else if (obj instanceof Element) {
+                       obj = d3.select(obj).attr('data-uid');
+               }
+               if (!obj || /undefined|null/.test(obj)) {
+                       return;
+               }
+               const uid = typeof obj === 'object' ? obj[UID.propertyName] || (obj.uiState && obj.uiState[UID.propertyName]) : obj;
+               if (typeof uid === 'string') {
+                       return uid;
+               }
+       }
+
+       static hasUniqueId(obj) {
+               return !!UID.from(obj);
+       }
+
+       static assignUniqueId(obj) {
+               return obj[UID.propertyName] = UID.create();
+       }
+
+}