playlist editor draft

assets/src/model.js

@@ -35,7 +35,7 @@ export default class Model {
      * Instanciate model with provided data and options.
      * By default `url` is taken from `data.url_`.
      */
-    constructor(data, {url=null, ...options}={}) {
+    constructor(data={}, {url=null, ...options}={}) {
         this.url = url || data.url_;
         this.options = options;
         this.commit(data);
@@ -133,6 +133,8 @@ export default class Model {
 }
 
 
+
+
 /**
  * List of models
  */
@@ -231,6 +233,25 @@ export class Set {
         this.items.splice(index,1);
         save && this.save();
     }
+
+    /**
+     * Clear items, assign new ones
+     */
+    reset(items=[]) {
+        // TODO: check reactivity
+        this.items = []
+        for(var item of items)
+            this.push(item)
+    }
+
+    move(from, to) {
+        if(from >= this.length || to > this.length)
+            throw "source or target index is not in range"
+
+        const value = this.items[from]
+        this.items.splice(from, 1)
+        this.items.splice(to, 0, value)
+    }
 }
 
 Set[Symbol.iterator] = function () {