    Observable
      GridView

# Class Ext.grid.GridView

Package: | Ext.grid
Defined In: | GridView.js
Class: | GridView
Subclasses: | GroupingView
Extends: | Observable

This class encapsulates the user interface of an Ext.grid.GridPanel. Methods of this class may be used to access user interface elements to enable special display effects. Do not change the DOM structure of the user interface.

This class does not provide ways to manipulate the underlying data. The data model of a Grid is held in an Ext.data.Store.

## Config Options

Config Options | Defined By
--- | ---
| autoFill : Boolean Defaults to false. Specify true to have the column widths re-proportioned when the grid is initially rendered. The ... Defaults to `false`. Specify `true` to have the column widths re-proportioned when the grid is initially rendered. The initially configured width of each column will be adjusted to fit the grid width and prevent horizontal scrolling. If columns are later resized (manually or programmatically), the other columns in the grid will not be resized to fit the grid width. See `forceFit` also. | GridView
| cellSelector : String The selector used to find cells internally (defaults to `'td.x-grid3-cell'`) | GridView
| cellSelectorDepth : Number The number of levels to search for cells in event delegation (defaults to `4`) | GridView
| columnsText : String The text displayed in the 'Columns' menu item (defaults to `'Columns'`) | GridView
| deferEmptyText : Boolean True to defer `emptyText` being applied until the store's first load (defaults to `true`). | GridView
| emptyText : String Default text (html tags are accepted) to display in the grid body when no rows are available (defaults to ''). This v... Default text (html tags are accepted) to display in the grid body when no rows are available (defaults to ''). This value will be used to update the `mainBody`:
    this.mainBody.update('<div class="x-grid-empty">' + this.emptyText + '</div>');
| GridView
| enableRowBody : Boolean True to add a second TR element per row that can be used to provide a row body that spans beneath the data row. Use ... True to add a second TR element per row that can be used to provide a row body that spans beneath the data row. Use the getRowClass method's rowParams config to customize the row body. | GridView
| forceFit : Boolean Defaults to false. Specify true to have the column widths re-proportioned at all times. The initially configured wi... Defaults to `false`. Specify `true` to have the column widths re-proportioned at all times. The initially configured width of each column will be adjusted to fit the grid width and prevent horizontal scrolling. If columns are later resized (manually or programmatically), the other columns in the grid will be resized to fit the grid width. See `autoFill` also. | GridView
| headersDisabled : Boolean True to disable the grid column headers (defaults to false). Use the ColumnModel menuDisabled config to disable the ... True to disable the grid column headers (defaults to `false`). Use the ColumnModel `menuDisabled` config to disable the menu for individual columns. While this config is true the following will be disabled: clicking on header to sort the trigger to reveal the menu. | GridView
| listeners : Object A config object containing one or more event handlers to be added to this object during initialization. This should ... A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once. DOM events from ExtJs Components While some ExtJs Component classes export selected DOM events (e.g. "click", "mouseover" etc), this is usually only done when extra value can be added. For example the DataView's `click` event passing the node clicked on. To access DOM events directly from a Component's HTMLElement, listeners must be added to the Element after the Component has been rendered. A plugin can simplify this step:
    // Plugin is configured with a listeners config object.
    // The Component is appended to the argument list of all handler functions.
    Ext.DomObserver = Ext.extend(Object, {
        constructor: function(config) {
            this.listeners = config.listeners ? config.listeners : config;
        },

        // Component passes itself into plugin's init method
        init: function(c) {
            var p, l = this.listeners;
            for (p in l) {
                if (Ext.isFunction(l[p])) {
                    l[p] = this.createHandler(l[p], c);
                } else {
                    l[p].fn = this.createHandler(l[p].fn, c);
                }
            }

            // Add the listeners to the Element immediately following the render call
            c.render = c.render.createSequence(function() {
                var e = c.getEl();
                if (e) {
                    e.on(l);
                }
            });
        },

        createHandler: function(fn, c) {
            return function(e) {
                fn.call(this, e, c);
            };
        }
    });

    var combo = new Ext.form.ComboBox({

        // Collapse combo when its element is clicked on
        plugins: [ new Ext.DomObserver({
            click: function(evt, comp) {
                comp.collapse();
            }
        })],
        store: myStore,
        typeAhead: true,
        mode: 'local',
        triggerAction: 'all'
    });
| Observable
| rowBodySelector : String The selector used to find row bodies internally (defaults to `'div.x-grid3-row'`) | GridView
| rowBodySelectorDepth : Number The number of levels to search for row bodies in event delegation (defaults to `10`) | GridView
| rowSelector : String The selector used to find rows internally (defaults to `'div.x-grid3-row'`) | GridView
| rowSelectorDepth : Number The number of levels to search for rows in event delegation (defaults to `10`) | GridView
| scrollOffset : Number The amount of space to reserve for the vertical scrollbar (defaults to undefined). If an explicit value isn't specifi... The amount of space to reserve for the vertical scrollbar (defaults to `undefined`). If an explicit value isn't specified, this will be automatically calculated. | GridView
| selectedRowClass : String The CSS class applied to a selected row (defaults to 'x-grid3-row-selected'). An example overriding the default styli... The CSS class applied to a selected row (defaults to `'x-grid3-row-selected'`). An example overriding the default styling:
    .x-grid3-row-selected {background-color: yellow;}
Note that this only controls the row, and will not do anything for the text inside it. To style inner facets (like text) use something like:
    .x-grid3-row-selected .x-grid3-cell-inner {
            color: #FFCC00;
        }
| GridView
| sortAscText : String The text displayed in the 'Sort Ascending' menu item (defaults to `'Sort Ascending'`) | GridView
| sortClasses : Array The CSS classes applied to a header when it is sorted. (defaults to `['sort-asc', 'sort-desc']`) | GridView
| sortDescText : String The text displayed in the 'Sort Descending' menu item (defaults to `'Sort Descending'`) | GridView

## Public Properties

Property | Defined By
--- | ---
| dragZone : Ext.grid.GridDragZone A customized implementation of a DragZone which provides default implementations of the template methods of DragZone ... A customized implementation of a DragZone which provides default implementations of the template methods of DragZone to enable dragging of the selected rows of a GridPanel. See Ext.grid.GridDragZone for details. This will only be present: if the owning GridPanel was configured with enableDragDrop: `true`. after the owning GridPanel has been rendered. | GridView
| mainBody : Ext.Element Read-only. The GridView's body Element which encapsulates all rows in the Grid. This Element is only available after ... Read-only. The GridView's body Element which encapsulates all rows in the Grid. This Element is only available after the GridPanel has been rendered. | GridView

## Public Methods

Method | Defined By
--- | ---
| GridView( `Object config` ) Parameters: `config` : Object Returns: void | GridView
- | addEvents( `Object|String o`, `string Optional.` ) : void Adds the specified events to the list of events which this Observable may fire. Adds the specified events to the list of events which this Observable may fire. Parameters: `o` : Object|String Either an object with event names as properties with a value of `true` or the first event name string if multiple event names are being passed as separate parameters. `Optional.` : string Event name if multiple event names are being passed as separate parameters. Usage:
      this.addEvents('storeloaded', 'storecleared');
Returns: void | Observable
- | addListener( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this object. Appends an event handler to this object. Parameters: `eventName` : String The name of the event to listen for. `handler` : Function The method the event invokes. `scope` : Object (optional) The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event. `options` : Object (optional) An object containing handler configuration. properties. This may contain any of the following properties: scope : Object The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event. delay : Number The number of milliseconds to delay the invocation of the handler after the event fires. single : Boolean True to add a handler to handle just the next firing of the event, and then remove itself. buffer : Number Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place. target : Observable Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable. Combining Options Using the options argument, it is possible to combine different types of listeners: A delayed, one-time listener.
      myDataView.on('click', this.onClick, this, {
      single: true,
      delay: 100
      });
  Attaching multiple handlers in 1 call The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers.
      myGridPanel.on({
      'click' : {
          fn: this.onClick,
          scope: this,
          delay: 100
      },
      'mouseover' : {
          fn: this.onMouseOver,
          scope: this
      },
      'mouseout' : {
          fn: this.onMouseOut,
          scope: this
      }
      });
  Or a shorthand syntax:
      myGridPanel.on({
      'click' : this.onClick,
      'mouseover' : this.onMouseOver,
      'mouseout' : this.onMouseOut,
       scope: this
      });
Returns: void | Observable
| enableBubble( `String/Array events` ) : void Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present... Enables events fired by this Observable to bubble up an owner hierarchy by calling `this.getBubbleTarget()` if present. There is no implementation in the Observable base class. This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component.getBubbleTarget. The default implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to access the required target more quickly. Example:
    Ext.override(Ext.form.Field, {
        //  Add functionality to Field's initComponent to enable the change event to bubble

        initComponent : Ext.form.Field.prototype.initComponent.createSequence(function() {
            this.enableBubble('change');
        }),

        //  We know that we want Field's events to bubble directly to the FormPanel.

        getBubbleTarget : function() {
            if (!this.formPanel) {
                this.formPanel = this.findParentByType('form');
            }
            return this.formPanel;
        }
    });

    var myForm = new Ext.formPanel({
        title: 'User Details',
        items: [{
            ...
        }],
        listeners: {
            change: function() {
                // Title goes red if form has been modified.

                myForm.header.setStyle('color', 'red');
            }
        }
    });
Parameters: `events` : String/Array The event name to bubble, or an Array of event names. Returns: void | Observable
| findCellIndex( `HTMLElement el` ) : Number Return the index of the grid column which contains the passed HTMLElement. See also findRowIndex Return the index of the grid column which contains the passed HTMLElement. See also findRowIndex Parameters: `el` : HTMLElement The target element Returns: `Number` The column index, or <b>false</b> if the target element is not within a row of this GridView. | GridView
| findRow( `HTMLElement el` ) : HTMLElement Return the HtmlElement representing the grid row which contains the passed element. Return the HtmlElement representing the grid row which contains the passed element. Parameters: `el` : HTMLElement The target HTMLElement Returns: `HTMLElement` The row element, or null if the target element is not within a row of this GridView. | GridView
| findRowBody( `HTMLElement el` ) : HTMLElement Return the HtmlElement representing the grid row body which contains the passed element. Return the HtmlElement representing the grid row body which contains the passed element. Parameters: `el` : HTMLElement The target HTMLElement Returns: `HTMLElement` The row body element, or null if the target element is not within a row body of this GridView. | GridView
| findRowIndex( `HTMLElement el` ) : Number Return the index of the grid row which contains the passed HTMLElement. See also findCellIndex Return the index of the grid row which contains the passed HTMLElement. See also findCellIndex Parameters: `el` : HTMLElement The target HTMLElement Returns: `Number` The row index, or <b>false</b> if the target element is not within a row of this GridView. | GridView
| fireEvent( `String eventName`, `Object... args` ) : Boolean Fires the specified event with the passed parameters (minus the event name). An event may be set to bubble up an Obse... Fires the specified event with the passed parameters (minus the event name). An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) by calling enableBubble. Parameters: `eventName` : String The name of the event to fire. `args` : Object... Variable number of parameters are passed to handlers. Returns: `Boolean` returns false if any of the handlers return false otherwise it returns true. | Observable
| focusCell( `Number row`, `Number col` ) : void Focuses the specified cell. Focuses the specified cell. Parameters: `row` : Number The row index `col` : Number The column index Returns: void | GridView
| focusRow( `Number row` ) : void Focuses the specified row. Focuses the specified row. Parameters: `row` : Number The row index Returns: void | GridView
| getCell( `Number row`, `Number col` ) : HtmlElement Returns the grid's &lt;td> HtmlElement at the specified coordinates. Returns the grid's `<td>` HtmlElement at the specified coordinates. Parameters: `row` : Number The row index in which to find the cell. `col` : Number The column index of the cell. Returns: `HtmlElement` The td at the specified coordinates. | GridView
| getHeaderCell( `Number index` ) : HtmlElement Return the &lt;td> HtmlElement which represents the Grid's header cell for the specified column index. Return the `<td>` HtmlElement which represents the Grid's header cell for the specified column index. Parameters: `index` : Number The column index Returns: `HtmlElement` The td element. | GridView
| getRow( `Number index` ) : HtmlElement Return the &lt;div> HtmlElement which represents a Grid row for the specified index. Return the `<div>` HtmlElement which represents a Grid row for the specified index. Parameters: `index` : Number The row index Returns: `HtmlElement` The div element. | GridView
| getRowClass( `Record record`, `Number index`, `Object rowParams`, `Store store` ) : String Override this function to apply custom CSS classes to rows during rendering. You can also supply custom parameters t... Override this function to apply custom CSS classes to rows during rendering. You can also supply custom parameters to the row template for the current row to customize how it is rendered using the rowParams parameter. This function should return the CSS class name (or empty string '' for none) that will be added to the row's wrapping div. To apply multiple class names, simply return them space-delimited within the string (e.g., 'my-class another-class'). Example usage:
    viewConfig: {
        forceFit: true,
        showPreview: true, // custom property
        enableRowBody: true, // required to create a second, full-width row to show expanded Record data
        getRowClass: function(record, rowIndex, rp, ds){ // rp = rowParams
            if(this.showPreview){
                rp.body = '<p>'+record.data.excerpt+'</p>';
                return 'x-grid3-row-expanded';
            }
            return 'x-grid3-row-collapsed';
        }
    },
Parameters: `record` : Record The Ext.data.Record corresponding to the current row. `index` : Number The row index. `rowParams` : Object A config object that is passed to the row template during rendering that allows customization of various aspects of a grid row. If enableRowBody is configured ``true, then the following properties may be set by this function, and will be used to render a full-width expansion row below each grid row: `body` : String An HTML fragment to be used as the expansion row's body content (defaults to ''). `bodyStyle` : String A CSS style specification that will be applied to the expansion row's <tr> element. (defaults to ''). The following property will be passed in, and may be appended to: `tstyle` : String A CSS style specification that willl be applied to the <table> element which encapsulates both the standard grid row, and any expansion row. `store` : Store The Ext.data.Store this grid is bound to Returns: `String` a CSS class name to add to the row. | GridView
| hasListener( `String eventName` ) : Boolean Checks to see if this object has any listeners for a specified event Checks to see if this object has any listeners for a specified event Parameters: `eventName` : String The name of the event to check for Returns: `Boolean` True if the event is being listened for, else false | Observable
| on( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this object (shorthand for addListener.) Appends an event handler to this object (shorthand for addListener.) Parameters: `eventName` : String The type of event to listen for `handler` : Function The method the event invokes `scope` : Object (optional) The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event. `options` : Object (optional) An object containing handler configuration. Returns: void | Observable
| purgeListeners() : void Removes all listeners for this object Removes all listeners for this object Parameters: None. Returns: void | Observable
| refresh( [`Boolean headersToo`] ) : void Refreshs the grid UI Refreshs the grid UI Parameters: `headersToo` : Boolean (optional) True to also refresh the headers Returns: void | GridView
| relayEvents( `Object o`, `Array events` ) : void Relays selected events from the specified Observable as if the events were fired by this. Relays selected events from the specified Observable as if the events were fired by `this`. Parameters: `o` : Object The Observable whose events this object is to relay. `events` : Array Array of event names to relay. Returns: void | Observable
| removeListener( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes an event handler. Removes an event handler. Parameters: `eventName` : String The type of event the handler was associated with. `handler` : Function The handler to remove. This must be a reference to the function passed into the addListener call. `scope` : Object (optional) The scope originally specified for the handler. Returns: void | Observable
| resumeEvents() : void Resume firing events. (see suspendEvents) If events were suspended using the queueSuspended parameter, then all event... Resume firing events. (see suspendEvents) If events were suspended using the `queueSuspended` parameter, then all events fired during event suspension will be sent to any listeners now. Parameters: None. Returns: void | Observable
| scrollToTop() : void Scrolls the grid to the top Scrolls the grid to the top Parameters: None. Returns: void | GridView
| suspendEvents( `Boolean queueSuspended` ) : void Suspend the firing of all events. (see resumeEvents) Suspend the firing of all events. (see resumeEvents) Parameters: `queueSuspended` : Boolean Pass as true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events; Returns: void | Observable
| un( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes an event handler (shorthand for removeListener.) Removes an event handler (shorthand for removeListener.) Parameters: `eventName` : String The type of event the handler was associated with. `handler` : Function The handler to remove. This must be a reference to the function passed into the addListener call. `scope` : Object (optional) The scope originally specified for the handler. Returns: void | Observable

## Public Events

Event | Defined By
--- | ---
| beforerefresh : ( `Ext.grid.GridView view` ) Internal UI Event. Fired before the view is refreshed. Internal UI Event. Fired before the view is refreshed. Listeners will be called with the following arguments: `view` : Ext.grid.GridView | GridView
| beforerowremoved : ( `Ext.grid.GridView view`, `Number rowIndex`, `Ext.data.Record record` ) Internal UI Event. Fired before a row is removed. Internal UI Event. Fired before a row is removed. Listeners will be called with the following arguments: `view` : Ext.grid.GridView `rowIndex` : Number The index of the row to be removed. `record` : Ext.data.Record The Record to be removed | GridView
| beforerowsinserted : ( `Ext.grid.GridView view`, `Number firstRow`, `Number lastRow` ) Internal UI Event. Fired before rows are inserted. Internal UI Event. Fired before rows are inserted. Listeners will be called with the following arguments: `view` : Ext.grid.GridView `firstRow` : Number The index of the first row to be inserted. `lastRow` : Number The index of the last row to be inserted. | GridView
| refresh : ( `Ext.grid.GridView view` ) Internal UI Event. Fired after the GridView's body has been refreshed. Internal UI Event. Fired after the GridView's body has been refreshed. Listeners will be called with the following arguments: `view` : Ext.grid.GridView | GridView
| rowremoved : ( `Ext.grid.GridView view`, `Number rowIndex`, `Ext.data.Record record` ) Internal UI Event. Fired after a row is removed. Internal UI Event. Fired after a row is removed. Listeners will be called with the following arguments: `view` : Ext.grid.GridView `rowIndex` : Number The index of the row that was removed. `record` : Ext.data.Record The Record that was removed | GridView
| rowsinserted : ( `Ext.grid.GridView view`, `Number firstRow`, `Number lastRow` ) Internal UI Event. Fired after rows are inserted. Internal UI Event. Fired after rows are inserted. Listeners will be called with the following arguments: `view` : Ext.grid.GridView `firstRow` : Number The index of the first inserted. `lastRow` : Number The index of the last row inserted. | GridView
| rowupdated : ( `Ext.grid.GridView view`, `Number firstRow`, `Ext.data.record record` ) Internal UI Event. Fired after a row has been updated. Internal UI Event. Fired after a row has been updated. Listeners will be called with the following arguments: `view` : Ext.grid.GridView `firstRow` : Number The index of the row updated. `record` : Ext.data.record The Record backing the row updated. | GridView