/** * This plugin provides drag and drop functionality for a {@link Ext.grid.View GridView}. * * A specialized instance of {@link Ext.dd.DragZone DragZone} and {@link Ext.dd.DropZone * DropZone} are attached to the grid view. The DropZone will participate in drops * from DragZones having the same {@link #ddGroup} including drops from within the same * grid. * * Note that where touch gestures are available, the `longpress` gesture will initiate * the drag in order that the `touchstart` may still be used to initiate a scroll. * * On platforms which implement the [Pointer Events standard](https://www.w3.org/TR/pointerevents/) (IE), * the `touchstart` event is usually claimed by the platform, however, this plugin * uses the `longpress` event to trigger drags, so `touchstart` will not initiate a scroll. * On these platforms, a two finger drag gesture will scroll the content, or a single * finger drag on an empty area of the view will scroll the content. * * During the drop operation a data object is passed to a participating DropZone's drop * handlers. The drag data object has the following properties: * * - **copy:** {@link Boolean} <br> The value of {@link #copy}. Or `true` if * {@link #allowCopy} is true **and** the control key was pressed as the drag operation * began. * * - **view:** {@link Ext.grid.View GridView} <br> The source grid view from which the * drag originated * * - **ddel:** HTMLElement <br> The drag proxy element which moves with the cursor * * - **item:** HTMLElement <br> The grid view node upon which the mousedown event was * registered * * - **records:** {@link Array} <br> An Array of {@link Ext.data.Model Model}s * representing the selected data being dragged from the source grid view * * By adding this plugin to a view, two new events will be fired from the client * grid view as well as its owning Grid: `{@link #beforedrop}` and `{@link #drop}`. * * @example * var store = Ext.create('Ext.data.Store', { * fields: ['name'], * data: [ * ["Lisa"], * ["Bart"], * ["Homer"], * ["Marge"] * ], * proxy: { * type: 'memory', * reader: 'array' * } * }); * * Ext.create('Ext.grid.Panel', { * store: store, * enableLocking: true, * columns: [{ * header: 'Name', * dataIndex: 'name', * flex: true * }], * viewConfig: { * plugins: { * gridviewdragdrop: { * dragText: 'Drag and drop to reorganize' * } * } * }, * height: 200, * width: 400, * renderTo: Ext.getBody() * }); */Ext.define('Ext.grid.plugin.DragDrop', { extend: 'Ext.plugin.Abstract', alias: 'plugin.gridviewdragdrop', uses: [ 'Ext.view.DragZone', 'Ext.grid.ViewDropZone' ], /** * @event beforedrop * **This event is fired through the {@link Ext.grid.View GridView} and its owning * {@link Ext.grid.Panel Grid}. You can add listeners to the grid or grid {@link * Ext.grid.Panel#viewConfig view config} object** * * Fired when a drop gesture has been triggered by a mouseup event in a valid drop * position in the grid view. * * Returning `false` to this event signals that the drop gesture was invalid and * animates the drag proxy back to the point from which the drag began. * * The dropHandlers parameter can be used to defer the processing of this event. For * example, you can force the handler to wait for the result of a message box * confirmation or an asynchronous server call (_see the details of the dropHandlers * property for more information_). * * grid.on('beforedrop', function(node, data, overModel, dropPosition, dropHandlers) { * // Defer the handling * dropHandlers.wait = true; * Ext.MessageBox.confirm('Drop', 'Are you sure', function(btn){ * if (btn === 'yes') { * dropHandlers.processDrop(); * } else { * dropHandlers.cancelDrop(); * } * }); * }); * * Any other return value continues with the data transfer operation unless the wait * property is set. * * @param {HTMLElement} node The {@link Ext.grid.View grid view} node **if any** over * which the cursor was positioned. * * @param {Object} data The data object gathered at mousedown time by the * cooperating {@link Ext.dd.DragZone DragZone}'s {@link Ext.dd.DragZone#getDragData * getDragData} method. It contains the following properties: * @param {Boolean} data.copy The value of {@link #copy}. Or `true` if * {@link #allowCopy} is true **and** the control key was pressed as the drag * operation began. * @param {Ext.grid.View} data.view The source grid view from which the drag * originated * @param {HTMLElement} data.ddel The drag proxy element which moves with the cursor * @param {HTMLElement} data.item The grid view node upon which the mousedown event * was registered * @param {Ext.data.Model[]} data.records An Array of Models representing the * selected data being dragged from the source grid view * * @param {Ext.data.Model} overModel The Model over which the drop gesture took place * * @param {String} dropPosition `"before"` or `"after"` depending on whether the * cursor is above or below the mid-line of the node. * * @param {Object} dropHandlers * This parameter allows the developer to control when the drop action takes place. * It is useful if any asynchronous processing needs to be completed before * performing the drop. This object has the following properties: * * @param {Boolean} dropHandlers.wait Indicates whether the drop should be deferred. * Set this property to true to defer the drop. * @param {Function} dropHandlers.processDrop A function to be called to complete * the drop operation. * @param {Function} dropHandlers.cancelDrop A function to be called to cancel the * drop operation. */ /** * @event drop * **This event is fired through the {@link Ext.grid.View GridView} and its owning * {@link Ext.grid.Panel Grid}. You can add listeners to the grid or grid {@link * Ext.grid.Panel#viewConfig view config} object** * * Fired when a drop operation has been completed and the data has been moved or * copied. * * @param {HTMLElement} node The {@link Ext.grid.View GridView} node **if any** over * which the cursor was positioned. * * @param {Object} data The data object gathered at mousedown time by the * cooperating {@link Ext.dd.DragZone DragZone}'s {@link Ext.dd.DragZone#getDragData * getDragData} method. It contains the following properties: * @param {Boolean} data.copy The value of {@link #copy}. Or `true` if * {@link #allowCopy} is true **and** the control key was pressed as the drag * operation began. * @param {Ext.grid.View} data.view The source grid view from which the drag * originated * @param {HTMLElement} data.ddel The drag proxy element which moves with the cursor * @param {HTMLElement} data.item The grid view node upon which the mousedown event * was registered * @param {Ext.data.Model[]} data.records An Array of Models representing the * selected data being dragged from the source grid view * * @param {Ext.data.Model} overModel The Model over which the drop gesture took * place. * * @param {String} dropPosition `"before"` or `"after"` depending on whether the * cursor is above or below the mid-line of the node. */ /** * @cfg {Boolean} [copy=false] * Set as `true` to copy the records from the source grid to the destination drop * grid. Otherwise, dragged records will be moved. * * **Note:** This only applies to records dragged between two different grids with * unique stores. * * See {@link #allowCopy} to allow only control-drag operations to copy records. */ /** * @cfg {Boolean} [allowCopy=false] * Set as `true` to allow the user to hold down the control key at the start of the * drag operation and copy the dragged records between grids. Otherwise, dragged * records will be moved. * * **Note:** This only applies to records dragged between two different grids with * unique stores. * * See {@link #copy} to enable the copying of all dragged records. */ /** * @cfg {String} dragText * The text to show while dragging. * * Two placeholders can be used in the text: * * - `{0}` The number of selected items. * - `{1}` 's' when more than 1 items (only useful for English). * @locale */ dragText : '{0} selected row{1}', /** * @cfg {String} [ddGroup=gridDD] * A named drag drop group to which this object belongs. If a group is specified, then both the DragZones and * DropZone used by this plugin will only interact with other drag drop objects in the same group. */ ddGroup : "GridDD", /** * @cfg {String} [dragGroup] * The {@link #ddGroup} to which the DragZone will belong. * * This defines which other DropZones the DragZone will interact with. Drag/DropZones only interact with other * Drag/DropZones which are members of the same {@link #ddGroup}. */ /** * @cfg {String} [dropGroup] * The {@link #ddGroup} to which the DropZone will belong. * * This defines which other DragZones the DropZone will interact with. Drag/DropZones only interact with other * Drag/DropZones which are members of the same {@link #ddGroup}. */ /** * @cfg {Boolean} enableDrop * `false` to disallow the View from accepting drop gestures. */ enableDrop: true, /** * @cfg {Boolean} enableDrag * `false` to disallow dragging items from the View. */ enableDrag: true, /** * `true` to register this container with the Scrollmanager for auto scrolling during drag operations. * A {@link Ext.dd.ScrollManager} configuration may also be passed. * @cfg {Object/Boolean} containerScroll */ containerScroll: false, /** * @cfg {Object} [dragZone] * A config object to apply to the creation of the {@link #property-dragZone DragZone} which handles for drag start gestures. * * Template methods of the DragZone may be overridden using this config. */ /** * @cfg {Object} [dropZone] * A config object to apply to the creation of the {@link #property-dropZone DropZone} which handles mouseover and drop gestures. * * Template methods of the DropZone may be overridden using this config. */ /** * @property {Ext.view.DragZone} dragZone * An {@link Ext.view.DragZone DragZone} which handles mousedown and dragging of records from the grid. */ /** * @property {Ext.grid.ViewDropZone} dropZone * An {@link Ext.grid.ViewDropZone DropZone} which handles mouseover and dropping records in any grid which shares the same {@link #dropGroup}. */ init: function(view) { Ext.applyIf(view, { copy: this.copy, allowCopy: this.allowCopy }); view.on('render', this.onViewRender, this, {single: true}); }, /** * @private * Component calls destroy on all its plugins at destroy time. */ destroy: function() { var me = this; me.dragZone = me.dropZone = Ext.destroy(me.dragZone, me.dropZone); me.callParent(); }, enable: function() { var me = this; if (me.dragZone) { me.dragZone.unlock(); } if (me.dropZone) { me.dropZone.unlock(); } me.callParent(); }, disable: function() { var me = this; if (me.dragZone) { me.dragZone.lock(); } if (me.dropZone) { me.dropZone.lock(); } me.callParent(); }, onViewRender: function(view) { var me = this, ownerGrid = view.ownerCt.ownerGrid || view.ownerCt, dragZone = me.dragZone || {}; ownerGrid.relayEvents(view, ['beforedrop', 'drop']); if (me.enableDrag) { if (me.containerScroll) { dragZone.scrollEl = view.getEl(); dragZone.containerScroll = true; } me.dragZone = new Ext.view.DragZone(Ext.apply({ view: view, ddGroup: me.dragGroup || me.ddGroup, dragText: me.dragText }, dragZone)); } if (me.enableDrop) { me.dropZone = new Ext.grid.ViewDropZone(Ext.apply({ view: view, ddGroup: me.dropGroup || me.ddGroup }, me.dropZone)); } }});