copy data/DiffStore.js from manager to manager5

www/manager5/data/DiffStore.js

+/* Config properties:
+ * rstore: A storage to track changes
+ * Only works if rstore has a model and use 'idProperty'
+ */
+Ext.define('PVE.data.DiffStore', {
+    extend: 'Ext.data.Store',
+
+    sortAfterUpdate: false,
+    
+    constructor: function(config) {
+	var me = this;
+
+	config = config || {};
+
+	if (!config.rstore) {
+	    throw "no rstore specified";
+	}
+
+	if (!config.rstore.model) {
+	    throw "no rstore model specified";
+	}
+
+	var rstore = config.rstore;
+
+	Ext.apply(config, {
+	    model: rstore.model,
+	    proxy: { type: 'memory' }
+	});
+
+	me.callParent([config]);
+
+	var first_load = true;
+
+	var cond_add_item = function(data, id) {
+	    var olditem = me.getById(id);
+	    if (olditem) {
+		olditem.beginEdit();
+		me.model.prototype.fields.eachKey(function(field) {
+		    if (olditem.data[field] !== data[field]) {
+			olditem.set(field, data[field]);
+		    }
+		});
+		olditem.endEdit(true);
+		olditem.commit(); 
+	    } else {
+		var newrec = Ext.ModelMgr.create(data, me.model, id);
+		var pos = (me.appendAtStart && !first_load) ? 0 : me.data.length;
+		me.insert(pos, newrec);
+	    }
+	};
+
+	me.mon(rstore, 'load', function(s, records, success) {
+
+	    if (!success) {
+		return;
+	    }
+
+	    me.suspendEvents();
+
+	    // remove vanished items
+	    (me.snapshot || me.data).each(function(olditem) {
+		var item = rstore.getById(olditem.getId());
+		if (!item) {
+		    me.remove(olditem);
+		}
+	    });
+		    
+	    rstore.each(function(item) {
+		cond_add_item(item.data, item.getId());
+	    });
+
+	    me.filter();
+
+	    if (me.sortAfterUpdate) {
+		me.sort();
+	    }
+
+	    first_load = false;
+
+	    me.resumeEvents();
+	    me.fireEvent('datachanged', me);
+	});
+    }
+});