/**
+ * @class Ext.view.DragZone
+ * @extends Ext.dd.DragZone
+ * @private
+ */
+Ext.define('Ext.view.DragZone', {
+ extend: 'Ext.dd.DragZone',
+ containerScroll: false,
+
+ constructor: function(config) {
+ var me = this;
+
+ Ext.apply(me, config);
+
+ // Create a ddGroup unless one has been configured.
+ // User configuration of ddGroups allows users to specify which
+ // DD instances can interact with each other. Using one
+ // based on the id of the View would isolate it and mean it can only
+ // interact with a DropZone on the same View also using a generated ID.
+ if (!me.ddGroup) {
+ me.ddGroup = 'view-dd-zone-' + me.view.id;
+ }
+
+ // Ext.dd.DragDrop instances are keyed by the ID of their encapsulating element.
+ // So a View's DragZone cannot use the View's main element because the DropZone must use that
+ // because the DropZone may need to scroll on hover at a scrolling boundary, and it is the View's
+ // main element which handles scrolling.
+ // We use the View's parent element to drag from. Ideally, we would use the internal structure, but that
+ // is transient; DataView's recreate the internal structure dynamically as data changes.
+ // TODO: Ext 5.0 DragDrop must allow multiple DD objects to share the same element.
+ me.callParent([me.view.el.dom.parentNode]);
+
+ me.ddel = Ext.get(document.createElement('div'));
+ me.ddel.addCls(Ext.baseCSSPrefix + 'grid-dd-wrap');
+ },
+
+ init: function(id, sGroup, config) {
+ this.initTarget(id, sGroup, config);
+ this.view.mon(this.view, {
+ itemmousedown: this.onItemMouseDown,
+ scope: this
+ });
+ },
+
+ onItemMouseDown: function(view, record, item, index, e) {
+ if (!this.isPreventDrag(e, record, item, index)) {
+ this.handleMouseDown(e);
+ }
+ },
+
+ // private template method
+ isPreventDrag: function(e) {
+ return false;
+ },
+
+ getDragData: function(e) {
+ var view = this.view,
+ item = e.getTarget(view.getItemSelector()),
+ record, selectionModel, records;
+
+ if (item) {
+ record = view.getRecord(item);
+ selectionModel = view.getSelectionModel();
+ records = selectionModel.getSelection();
+ return {
+ copy: this.view.copy || (this.view.allowCopy && e.ctrlKey),
+ event: new Ext.EventObjectImpl(e),
+ view: view,
+ ddel: this.ddel,
+ item: item,
+ records: records,
+ fromPosition: Ext.fly(item).getXY()
+ };
+ }
+ },
+
+ onInitDrag: function(x, y) {
+ var me = this,
+ data = me.dragData,
+ view = data.view,
+ selectionModel = view.getSelectionModel(),
+ record = view.getRecord(data.item),
+ e = data.event;
+
+ // Update the selection to match what would have been selected if the user had
+ // done a full click on the target node rather than starting a drag from it
+ if (!selectionModel.isSelected(record) || e.hasModifier()) {
+ selectionModel.selectWithEvent(record, e);
+ }
+ data.records = selectionModel.getSelection();
+
+ me.ddel.update(me.getDragText());
+ me.proxy.update(me.ddel.dom);
+ me.onStartDrag(x, y);
+ return true;
+ },
+
+ getDragText: function() {
+ var count = this.dragData.records.length;
+ return Ext.String.format(this.dragText, count, count == 1 ? '' : 's');
+ },
+
+ getRepairXY : function(e, data){
+ return data ? data.fromPosition : false;
+ }
+});