Restructured library.

lib/poppable.js

@@ -0,0 +1,72 @@
+/** Basic class for poppable elements that need to be closed as soon as one poppable is
+ * shown.
+ */
+export default class Poppable {
+
+    /** Register the poppable element in a context. Closes previously registered ones.
+     * @param {*} context 
+     */
+    register(context) {
+        let registered = Poppable.get(context)
+        if (registered != null) {
+            registered.close()
+        }
+        Poppable.set(context, this)
+    }
+
+    /**
+     * Unregister object from context
+     * @param {*} context 
+     */
+    unregister(context) {
+        Poppable.delete(context)
+    }
+
+    /**
+     * Returns the given poppable in a context
+     * @static
+     * @param {*} context
+     * @returns
+     * @memberof Poppable
+     */
+    static get(context) {
+        return Poppable.registrations.get(context)
+    }
+
+    /** Sets the poppable in the given context 
+    * @static
+    * @param {*} context
+    * @param {*} poppable
+    * @returns
+    * @memberof Poppable
+    */
+    static set(context, poppable) {
+        return Poppable.registrations.set(context, poppable)
+    }
+
+    /** Test whether a poppable exists in the given context
+     * 
+     * @param {*} context 
+     */
+    static has(context) {
+        return Poppable.registrations.has(context)
+    }
+
+    /**
+     * Removes the poppable from the given context.
+     *
+     * @static
+     * @param {*} context
+     * @memberof Poppable
+     */
+    static delete(context) {
+        Poppable.registrations.delete(context)
+    }
+
+    /** All poppable must implement a close method. */
+    close() {
+        console.error("Must be implemented")
+    }
+}
+
+Poppable.registrations = new Map()