Rift.IO OSM R1 Initial Submission

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

diff --git a/skyquake/plugins/composer/src/src/libraries/InstanceCounter.js b/skyquake/plugins/composer/src/src/libraries/InstanceCounter.js
new file mode 100644 (file)
index 0000000..78f8de7
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+++ b/skyquake/plugins/composer/src/src/libraries/InstanceCounter.js
@@ -0,0 +1,46 @@
+/**
+ * Created by onvelocity on 1/28/16.
+ */
+
+function getInstanceCount(type, bump = true) {
+       // keep a global counter
+       let count = 0;
+       const data = sessionStorage.getItem('instance-counts');
+       const counts = JSON.parse(data || '{}');
+       if (counts.hasOwnProperty(type)) {
+               count = counts[type];
+               if (bump) {
+                       counts[type] = ++count;
+               } else {
+                       return count;
+               }
+       } else {
+               count = counts[type] = 1;
+       }
+       sessionStorage.setItem('instance-counts', JSON.stringify(counts));
+       return count;
+}
+
+export default {
+
+       /**
+        * Get instance count for given type without bumping the number.
+        *
+        * @param type
+        * @returns {number}
+        */
+       current(type) {
+               return getInstanceCount(type, false);
+       },
+
+       /**
+        * Get the instance count for the given type - will bump the counter and return the new value.
+        *
+        * @param type
+        * @returns {number}
+        */
+       count(type) {
+               return getInstanceCount(type);
+       }
+
+}
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