// A DropZone which cooperates with DragZones whose dragData contains
+// a "field" property representing a form Field. Fields may be dropped onto
+// grid data cells containing a matching data type.
+Ext.ux.CellFieldDropZone = Ext.extend(Ext.dd.DropZone, {
+ constructor: function(){},
+
+// Call the DropZone constructor using the View's scrolling element
+// only after the grid has been rendered.
+ init: function(grid) {
+ if (grid.rendered) {
+ this.grid = grid;
+ this.view = grid.getView();
+ this.store = grid.getStore();
+ Ext.ux.CellFieldDropZone.superclass.constructor.call(this, this.view.scroller);
+ } else {
+ grid.on('render', this.init, this);
+ }
+ },
+
+// Scroll the main configured Element when we drag close to the edge
+ containerScroll: true,
+
+ getTargetFromEvent: function(e) {
+// Ascertain whether the mousemove is within a grid cell
+ var t = e.getTarget(this.view.cellSelector);
+ if (t) {
+
+// We *are* within a grid cell, so ask the View exactly which one,
+// Extract data from the Model to create a target object for
+// processing in subsequent onNodeXXXX methods. Note that the target does
+// not have to be a DOM element. It can be whatever the noNodeXXX methods are
+// programmed to expect.
+ var rowIndex = this.view.findRowIndex(t);
+ var columnIndex = this.view.findCellIndex(t);
+ if ((rowIndex !== false) && (columnIndex !== false)) {
+ return {
+ node: t,
+ record: this.store.getAt(rowIndex),
+ fieldName: this.grid.getColumnModel().getDataIndex(columnIndex)
+ }
+ }
+ }
+ },
+
+// On Node enter, see if it is valid for us to drop the field on that type of column.
+ onNodeEnter: function(target, dd, e, dragData) {
+ delete this.dropOK;
+ if (!target) {
+ return;
+ }
+
+// Check that a field is being dragged.
+ var f = dragData.field;
+ if (!f) {
+ return;
+ }
+
+// Check whether the data type of the column being dropped on accepts the
+// dragged field type. If so, set dropOK flag, and highlight the target node.
+ var type = target.record.fields.get(target.fieldName).type;
+ switch (type) {
+ case 'float':
+ case 'int':
+ if (!f.isXType('numberfield')) {
+ return;
+ }
+ break;
+ case 'date':
+ if (!f.isXType('datefield')) {
+ return;
+ }
+ break;
+ case 'boolean':
+ if (!f.isXType('checkbox')) {
+ return;
+ }
+ }
+ this.dropOK = true;
+ Ext.fly(target.node).addClass('x-drop-target-active');
+ },
+
+// Return the class name to add to the drag proxy. This provides a visual indication
+// of drop allowed or not allowed.
+ onNodeOver: function(target, dd, e, dragData) {
+ return this.dropOK ? this.dropAllowed : this.dropNotAllowed;
+ },
+
+// nhighlight the target node.
+ onNodeOut: function(target, dd, e, dragData) {
+ Ext.fly(target.node).removeClass('x-drop-target-active');
+ },
+
+// Process the drop event if we have previously ascertained that a drop is OK.
+ onNodeDrop: function(target, dd, e, dragData) {
+ if (this.dropOK) {
+ target.record.set(target.fieldName, dragData.field.getValue());
+ return true;
+ }
+ }
+});
+
+// A class which makes Fields within a Panel draggable.
+// the dragData delivered to a coooperating DropZone's methods contains
+// the dragged Field in the property "field".
+Ext.ux.PanelFieldDragZone = Ext.extend(Ext.dd.DragZone, {
+ constructor: function(){},
+
+// Call the DRagZone's constructor. The Panel must have been rendered.
+ init: function(panel) {
+ if (panel.nodeType) {
+ Ext.ux.PanelFieldDragZone.superclass.init.apply(this, arguments);
+ } else {
+ if (panel.rendered) {
+ Ext.ux.PanelFieldDragZone.superclass.constructor.call(this, panel.getEl());
+ var i = Ext.fly(panel.getEl()).select('input');
+ i.unselectable();
+ } else {
+ panel.on('afterlayout', this.init, this, {single: true});
+ }
+ }
+ },
+
+ scroll: false,
+
+// On mousedown, we ascertain whether it is on one of our draggable Fields.
+// If so, we collect data about the draggable object, and return a drag data
+// object which contains our own data, plus a "ddel" property which is a DOM
+// node which provides a "view" of the dragged data.
+ getDragData: function(e) {
+ var t = e.getTarget('input');
+ if (t) {
+ e.stopEvent();
+
+// Ugly code to "detach" the drag gesture from the input field.
+// Without this, Opera never changes the mouseover target from the input field
+// even when dragging outside of the field - it just keeps selecting.
+ if (Ext.isOpera) {
+ Ext.fly(t).on('mousemove', function(e1){
+ t.style.visibility = 'hidden';
+ (function(){
+ t.style.visibility = '';
+ }).defer(1);
+ }, null, {single:true});
+ }
+
+// Get the data we are dragging: the Field
+// create a ddel for the drag proxy to display
+ var f = Ext.getCmp(t.id);
+ var d = document.createElement('div');
+ d.className = 'x-form-text';
+ d.appendChild(document.createTextNode(t.value));
+ Ext.fly(d).setWidth(f.getEl().getWidth());
+ return {
+ field: f,
+ ddel: d
+ };
+ }
+ },
+
+// The coordinates to slide the drag proxy back to on failed drop.
+ getRepairXY: function() {
+ return this.dragData.field.getEl().getXY();
+ }
+});
+
+Ext.onReady(function(){
+
+ var myData = [
+ ['3m Co',71.72,0.02,0.03,'9/1 12:00am'],
+ ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am'],
+ ['Altria Group Inc',83.81,0.28,0.34,'9/1 12:00am'],
+ ['American Express Company',52.55,0.01,0.02,'9/1 12:00am'],
+ ['American International Group, Inc.',64.13,0.31,0.49,'9/1 12:00am'],
+ ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am'],
+ ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am'],
+ ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am'],
+ ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am'],
+ ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'9/1 12:00am'],
+ ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am'],
+ ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am'],
+ ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am'],
+ ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am'],
+ ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am'],
+ ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am'],
+ ['International Business Machines',81.41,0.44,0.54,'9/1 12:00am'],
+ ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am'],
+ ['JP Morgan & Chase & Co',45.73,0.07,0.15,'9/1 12:00am'],
+ ['McDonald\'s Corporation',36.76,0.86,2.40,'9/1 12:00am'],
+ ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am'],
+ ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am'],
+ ['Pfizer Inc',27.96,0.4,1.45,'9/1 12:00am'],
+ ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am'],
+ ['The Home Depot, Inc.',34.64,0.35,1.02,'9/1 12:00am'],
+ ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am'],
+ ['United Technologies Corporation',63.26,0.55,0.88,'9/1 12:00am'],
+ ['Verizon Communications',35.57,0.39,1.11,'9/1 12:00am'],
+ ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am']
+ ];
+
+ // example of custom renderer function
+ function change(val){
+ if(val > 0){
+ return '' + val + '';
+ }else if(val < 0){
+ return '' + val + '';
+ }
+ return val;
+ }
+
+ // example of custom renderer function
+ function pctChange(val){
+ if(val > 0){
+ return '' + val + '%';
+ }else if(val < 0){
+ return '' + val + '%';
+ }
+ return val;
+ }
+
+ // create the data store
+ var store = new Ext.data.ArrayStore({
+ fields: [
+ {name: 'company'},
+ {name: 'price', type: 'float'},
+ {name: 'change', type: 'float'},
+ {name: 'pctChange', type: 'float'},
+ {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
+ ]
+ });
+ store.loadData(myData);
+
+ var helpWindow = new Ext.Window({
+ title: 'Source code',
+ width: 920,
+ height: 500,
+ closeAction: 'hide',
+ bodyCfg: {tag: 'textarea', readonly: true},
+ bodyStyle: {
+ backgroundColor: 'white',
+ margin: '0px',
+ border: '0px none'
+ },
+ listeners: {
+ render: function(w) {
+ Ext.Ajax.request({
+ url: 'field-to-grid-dd.js',
+ success: function(r) {
+ w.body.dom.value = r.responseText;
+ }
+ });
+ }
+ }
+ });
+
+ // create the Grid
+ var grid = new Ext.grid.GridPanel({
+ store: store,
+ columns: [
+ {id:'company',header: "Company", width: 160, sortable: true, dataIndex: 'company'},
+ {header: "Price", width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price'},
+ {header: "Change", width: 75, sortable: true, renderer: change, dataIndex: 'change'},
+ {header: "% Change", width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},
+ {header: "Last Updated", width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
+ ],
+ plugins: new Ext.ux.CellFieldDropZone(),
+ stripeRows: true,
+ autoExpandColumn: 'company',
+ height:350,
+ width:600,
+ title:'Array Grid',
+ bbar: new Ext.PagingToolbar({
+ buttons: [{
+ text: 'View Source',
+ handler: function() {
+ helpWindow.show();
+ }
+ }],
+ store: store,
+ pageSize: 25
+ })
+ });
+
+ grid.render('grid-example');
+ grid.getSelectionModel().selectFirstRow();
+
+ var f = new Ext.Panel({
+ frame: true,
+ layout: 'form',
+ width: 600,
+ plugins: new Ext.ux.PanelFieldDragZone(),
+ style: {
+ 'margin-top': '10px'
+ },
+ labelWidth: 150,
+ items: [{
+ xtype: 'textfield',
+ fieldLabel: 'Drag this text',
+ value: 'test'
+ },{
+ xtype: 'numberfield',
+ fieldLabel: 'Drag this number',
+ value: '1.2'
+ },{
+ xtype: 'datefield',
+ fieldLabel: 'Drag this date',
+ value: new Date()
+ }],
+ renderTo: Ext.getBody()
+ });
+});