#7076 manager.VDomUpdate WIP

Author: tobiu

src/manager/VDomUpdate.mjs

@@ -0,0 +1,109 @@
+import Collection from '../collection/Base.mjs';
+
+/**
+ * @class Neo.manager.VDomUpdate
+ * @extends Neo.collection.Base
+ * @singleton
+ */
+class VDomUpdate extends Collection {
+    static config = {
+        /**
+         * @member {String} className='Neo.manager.VDomUpdate'
+         * @protected
+         */
+        className: 'Neo.manager.VDomUpdate',
+        /**
+         * @member {Boolean} singleton=true
+         * @protected
+         */
+        singleton: true,
+        /**
+         * @member {Neo.collection.Base|null} mergedCallbackMap=null
+         * @protected
+         */
+        mergedCallbackMap: null,
+        /**
+         * @member {Neo.collection.Base|null} postUpdateQueueMap=null
+         * @protected
+         */
+        postUpdateQueueMap: null
+    }
+
+    /**
+     * @param {Object} config
+     */
+    construct(config) {
+        super.construct(config);
+
+        let me = this;
+
+        me.mergedCallbackMap  = Neo.create(Collection, {keyProperty: 'ownerId'});
+        me.postUpdateQueueMap = Neo.create(Collection, {keyProperty: 'ownerId'});
+    }
+
+    /**
+     * @param {String} ownerId
+     * @param {String} childId
+     * @param {Array} callbacks
+     */
+    registerMerged(ownerId, childId, callbacks) {
+        let me   = this,
+            item = me.mergedCallbackMap.get(ownerId);
+
+        if (!item) {
+            item = {ownerId, callbacks: [], childIds: []};
+            me.mergedCallbackMap.add(item);
+        }
+
+        item.callbacks.push(...callbacks);
+        item.childIds.push(childId);
+    }
+
+    /**
+     * @param {String} ownerId
+     * @param {String} childId
+     */
+    registerPostUpdate(ownerId, childId) {
+        let me   = this,
+            item = me.postUpdateQueueMap.get(ownerId);
+
+        if (!item) {
+            item = {ownerId, childIds: []};
+            me.postUpdateQueueMap.add(item);
+        }
+
+        item.childIds.push(childId);
+    }
+
+    /**
+     * @param {String} ownerId
+     */
+    executeCallbacks(ownerId) {
+        let me   = this,
+            item = me.mergedCallbackMap.get(ownerId);
+
+        if (item) {
+            item.callbacks.forEach(callback => callback());
+            me.mergedCallbackMap.remove(item);
+        }
+    }
+
+    /**
+     * @param {String} ownerId
+     */
+    triggerPostUpdates(ownerId) {
+        let me   = this,
+            item = me.postUpdateQueueMap.get(ownerId);
+
+        if (item) {
+            item.childIds.forEach(childId => {
+                let component = Neo.getComponent(childId);
+                component?.update();
+            });
+
+            me.postUpdateQueueMap.remove(item);
+        }
+    }
+}
+
+export default Neo.setupClass(VDomUpdate);