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<pre class="prettyprint lang-js"><div id="cls-Ext.grid.ColumnModel"></div>/**
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* @class Ext.grid.ColumnModel
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* @extends Ext.util.Observable
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* <p>After the data has been read into the client side cache (<b>{@link Ext.data.Store Store}</b>),
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* the ColumnModel is used to configure how and what parts of that data will be displayed in the
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* vertical slices (columns) of the grid. The Ext.grid.ColumnModel Class is the default implementation
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* of a ColumnModel used by implentations of {@link Ext.grid.GridPanel GridPanel}.</p>
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* <p>Data is mapped into the store's records and then indexed into the ColumnModel using the
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* <tt>{@link Ext.grid.Column#dataIndex dataIndex}</tt>:</p>
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* <pre><code>
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{data source} == mapping ==> {data store} == <b><tt>{@link Ext.grid.Column#dataIndex dataIndex}</tt></b> ==> {ColumnModel}
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* </code></pre>
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* <p>Each {@link Ext.grid.Column Column} in the grid's ColumnModel is configured with a
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* <tt>{@link Ext.grid.Column#dataIndex dataIndex}</tt> to specify how the data within
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* each record in the store is indexed into the ColumnModel.</p>
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* <p>There are two ways to initialize the ColumnModel class:</p>
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* <p><u>Initialization Method 1: an Array</u></p>
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<pre><code>
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var colModel = new Ext.grid.ColumnModel([
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{ header: "Ticker", width: 60, sortable: true},
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{ header: "Company Name", width: 150, sortable: true, id: 'company'},
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{ header: "Market Cap.", width: 100, sortable: true},
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{ header: "$ Sales", width: 100, sortable: true, renderer: money},
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{ header: "Employees", width: 100, sortable: true, resizable: false}
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]);
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</code></pre>
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* <p>The ColumnModel may be initialized with an Array of {@link Ext.grid.Column} column configuration
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* objects to define the initial layout / display of the columns in the Grid. The order of each
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* {@link Ext.grid.Column} column configuration object within the specified Array defines the initial
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* order of the column display. A Column's display may be initially hidden using the
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* <tt>{@link Ext.grid.Column#hidden hidden}</tt></b> config property (and then shown using the column
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* header menu). Fields that are not included in the ColumnModel will not be displayable at all.</p>
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* <p>How each column in the grid correlates (maps) to the {@link Ext.data.Record} field in the
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* {@link Ext.data.Store Store} the column draws its data from is configured through the
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* <b><tt>{@link Ext.grid.Column#dataIndex dataIndex}</tt></b>. If the
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* <b><tt>{@link Ext.grid.Column#dataIndex dataIndex}</tt></b> is not explicitly defined (as shown in the
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* example above) it will use the column configuration's index in the Array as the index.</p>
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* <p>See <b><tt>{@link Ext.grid.Column}</tt></b> for additional configuration options for each column.</p>
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* <p><u>Initialization Method 2: an Object</u></p>
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* <p>In order to use configuration options from <tt>Ext.grid.ColumnModel</tt>, an Object may be used to
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* initialize the ColumnModel. The column configuration Array will be specified in the <tt><b>{@link #columns}</b></tt>
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* config property. The <tt><b>{@link #defaults}</b></tt> config property can be used to apply defaults
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* for all columns, e.g.:</p><pre><code>
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var colModel = new Ext.grid.ColumnModel({
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columns: [
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{ header: "Ticker", width: 60, menuDisabled: false},
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{ header: "Company Name", width: 150, id: 'company'},
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{ header: "Market Cap."},
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{ header: "$ Sales", renderer: money},
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{ header: "Employees", resizable: false}
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],
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defaults: {
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sortable: true,
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menuDisabled: true,
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width: 100
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},
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listeners: {
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{@link #hiddenchange}: function(cm, colIndex, hidden) {
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saveConfig(colIndex, hidden);
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}
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}
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});
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</code></pre>
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* <p>In both examples above, the ability to apply a CSS class to all cells in a column (including the
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* header) is demonstrated through the use of the <b><tt>{@link Ext.grid.Column#id id}</tt></b> config
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* option. This column could be styled by including the following css:</p><pre><code>
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//add this css *after* the core css is loaded
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.x-grid3-td-company {
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color: red; // entire column will have red font
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}
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// modify the header row only, adding an icon to the column header
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.x-grid3-hd-company {
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background: transparent
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url(../../resources/images/icons/silk/building.png)
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no-repeat 3px 3px ! important;
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padding-left:20px;
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}
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</code></pre>
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* Note that the "Company Name" column could be specified as the
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* <b><tt>{@link Ext.grid.GridPanel}.{@link Ext.grid.GridPanel#autoExpandColumn autoExpandColumn}</tt></b>.
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* @constructor
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* @param {Mixed} config Specify either an Array of {@link Ext.grid.Column} configuration objects or specify
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* a configuration Object (see introductory section discussion utilizing Initialization Method 2 above).
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*/
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Ext.grid.ColumnModel = Ext.extend(Ext.util.Observable, {
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<div id="cfg-Ext.grid.ColumnModel-defaultWidth"></div>/**
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* @cfg {Number} defaultWidth (optional) The width of columns which have no <tt>{@link #width}</tt>
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* specified (defaults to <tt>100</tt>). This property shall preferably be configured through the
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* <tt><b>{@link #defaults}</b></tt> config property.
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*/
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defaultWidth: 100,
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<div id="cfg-Ext.grid.ColumnModel-defaultSortable"></div>/**
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* @cfg {Boolean} defaultSortable (optional) Default sortable of columns which have no
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* sortable specified (defaults to <tt>false</tt>). This property shall preferably be configured
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* through the <tt><b>{@link #defaults}</b></tt> config property.
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*/
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defaultSortable: false,
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<div id="cfg-Ext.grid.ColumnModel-columns"></div>/**
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* @cfg {Array} columns An Array of object literals. The config options defined by
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* <b>{@link Ext.grid.Column}</b> are the options which may appear in the object literal for each
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* individual column definition.
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*/
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<div id="cfg-Ext.grid.ColumnModel-defaults"></div>/**
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* @cfg {Object} defaults Object literal which will be used to apply {@link Ext.grid.Column}
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* configuration options to all <tt><b>{@link #columns}</b></tt>. Configuration options specified with
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* individual {@link Ext.grid.Column column} configs will supersede these <tt><b>{@link #defaults}</b></tt>.
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*/
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constructor : function(config){
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<div id="prop-Ext.grid.ColumnModel-config"></div>/**
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* An Array of {@link Ext.grid.Column Column definition} objects representing the configuration
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* of this ColumnModel. See {@link Ext.grid.Column} for the configuration properties that may
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* be specified.
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* @property config
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* @type Array
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*/
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if(config.columns){
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Ext.apply(this, config);
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this.setConfig(config.columns, true);
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}else{
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this.setConfig(config, true);
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}
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this.addEvents(
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<div id="event-Ext.grid.ColumnModel-widthchange"></div>/**
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* @event widthchange
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* Fires when the width of a column is programmaticially changed using
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* <code>{@link #setColumnWidth}</code>.
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* Note internal resizing suppresses the event from firing. See also
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* {@link Ext.grid.GridPanel}.<code>{@link #columnresize}</code>.
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* @param {ColumnModel} this
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* @param {Number} columnIndex The column index
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* @param {Number} newWidth The new width
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*/
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"widthchange",
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<div id="event-Ext.grid.ColumnModel-headerchange"></div>/**
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* @event headerchange
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* Fires when the text of a header changes.
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* @param {ColumnModel} this
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* @param {Number} columnIndex The column index
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* @param {String} newText The new header text
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*/
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"headerchange",
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<div id="event-Ext.grid.ColumnModel-hiddenchange"></div>/**
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* @event hiddenchange
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* Fires when a column is hidden or "unhidden".
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* @param {ColumnModel} this
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* @param {Number} columnIndex The column index
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* @param {Boolean} hidden true if hidden, false otherwise
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*/
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"hiddenchange",
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<div id="event-Ext.grid.ColumnModel-columnmoved"></div>/**
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* @event columnmoved
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* Fires when a column is moved.
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* @param {ColumnModel} this
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* @param {Number} oldIndex
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* @param {Number} newIndex
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*/
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"columnmoved",
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<div id="event-Ext.grid.ColumnModel-configchange"></div>/**
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* @event configchange
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* Fires when the configuration is changed
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* @param {ColumnModel} this
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*/
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"configchange"
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);
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Ext.grid.ColumnModel.superclass.constructor.call(this);
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},
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<div id="method-Ext.grid.ColumnModel-getColumnId"></div>/**
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* Returns the id of the column at the specified index.
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* @param {Number} index The column index
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* @return {String} the id
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*/
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getColumnId : function(index){
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return this.config[index].id;
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},
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getColumnAt : function(index){
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return this.config[index];
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},
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<div id="method-Ext.grid.ColumnModel-setConfig"></div>/**
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* <p>Reconfigures this column model according to the passed Array of column definition objects.
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* For a description of the individual properties of a column definition object, see the
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* <a href="#Ext.grid.ColumnModel-configs">Config Options</a>.</p>
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* <p>Causes the {@link #configchange} event to be fired. A {@link Ext.grid.GridPanel GridPanel}
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* using this ColumnModel will listen for this event and refresh its UI automatically.</p>
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* @param {Array} config Array of Column definition objects.
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* @param {Boolean} initial Specify <tt>true</tt> to bypass cleanup which deletes the <tt>totalWidth</tt>
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* and destroys existing editors.
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*/
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setConfig : function(config, initial){
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var i, c, len;
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if(!initial){ // cleanup
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delete this.totalWidth;
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for(i = 0, len = this.config.length; i < len; i++){
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c = this.config[i];
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if(c.editor){
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c.editor.destroy();
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}
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}
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}
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// backward compatibility
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this.defaults = Ext.apply({
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width: this.defaultWidth,
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sortable: this.defaultSortable
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}, this.defaults);
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this.config = config;
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this.lookup = {};
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for(i = 0, len = config.length; i < len; i++){
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c = Ext.applyIf(config[i], this.defaults);
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// if no id, create one using column's ordinal position
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if(typeof c.id == 'undefined'){
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c.id = i;
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}
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if(!c.isColumn){
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var Cls = Ext.grid.Column.types[c.xtype || 'gridcolumn'];
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c = new Cls(c);
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config[i] = c;
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}
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this.lookup[c.id] = c;
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}
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if(!initial){
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this.fireEvent('configchange', this);
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}
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},
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<div id="method-Ext.grid.ColumnModel-getColumnById"></div>/**
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* Returns the column for a specified id.
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* @param {String} id The column id
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* @return {Object} the column
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*/
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getColumnById : function(id){
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return this.lookup[id];
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},
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<div id="method-Ext.grid.ColumnModel-getIndexById"></div>/**
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* Returns the index for a specified column id.
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* @param {String} id The column id
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* @return {Number} the index, or -1 if not found
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*/
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getIndexById : function(id){
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for(var i = 0, len = this.config.length; i < len; i++){
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if(this.config[i].id == id){
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return i;
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}
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}
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return -1;
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},
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<div id="method-Ext.grid.ColumnModel-moveColumn"></div>/**
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* Moves a column from one position to another.
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* @param {Number} oldIndex The index of the column to move.
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* @param {Number} newIndex The position at which to reinsert the coolumn.
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*/
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moveColumn : function(oldIndex, newIndex){
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var c = this.config[oldIndex];
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this.config.splice(oldIndex, 1);
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this.config.splice(newIndex, 0, c);
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this.dataMap = null;
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this.fireEvent("columnmoved", this, oldIndex, newIndex);
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},
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<div id="method-Ext.grid.ColumnModel-getColumnCount"></div>/**
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* Returns the number of columns.
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* @param {Boolean} visibleOnly Optional. Pass as true to only include visible columns.
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* @return {Number}
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*/
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getColumnCount : function(visibleOnly){
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if(visibleOnly === true){
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var c = 0;
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for(var i = 0, len = this.config.length; i < len; i++){
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if(!this.isHidden(i)){
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c++;
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}
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}
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return c;
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}
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return this.config.length;
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},
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<div id="method-Ext.grid.ColumnModel-getColumnsBy"></div>/**
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* Returns the column configs that return true by the passed function that is called
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* with (columnConfig, index)
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<pre><code>
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// returns an array of column config objects for all hidden columns
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var columns = grid.getColumnModel().getColumnsBy(function(c){
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return c.hidden;
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});
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</code></pre>
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* @param {Function} fn A function which, when passed a {@link Ext.grid.Column Column} object, must
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* return <code>true</code> if the column is to be included in the returned Array.
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* @param {Object} scope (optional) The scope (<code>this</code> reference) in which the function
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* is executed. Defaults to this ColumnModel.
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* @return {Array} result
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*/
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getColumnsBy : function(fn, scope){
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var r = [];
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for(var i = 0, len = this.config.length; i < len; i++){
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var c = this.config[i];
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if(fn.call(scope||this, c, i) === true){
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r[r.length] = c;
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}
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}
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return r;
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},
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<div id="method-Ext.grid.ColumnModel-isSortable"></div>/**
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* Returns true if the specified column is sortable.
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* @param {Number} col The column index
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* @return {Boolean}
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*/
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isSortable : function(col){
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return !!this.config[col].sortable;
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},
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<div id="method-Ext.grid.ColumnModel-isMenuDisabled"></div>/**
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* Returns true if the specified column menu is disabled.
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* @param {Number} col The column index
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* @return {Boolean}
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*/
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isMenuDisabled : function(col){
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return !!this.config[col].menuDisabled;
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},
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<div id="method-Ext.grid.ColumnModel-getRenderer"></div>/**
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* Returns the rendering (formatting) function defined for the column.
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* @param {Number} col The column index.
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* @return {Function} The function used to render the cell. See {@link #setRenderer}.
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*/
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getRenderer : function(col){
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if(!this.config[col].renderer){
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return Ext.grid.ColumnModel.defaultRenderer;
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}
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return this.config[col].renderer;
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},
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getRendererScope : function(col){
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return this.config[col].scope;
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},
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<div id="method-Ext.grid.ColumnModel-setRenderer"></div>/**
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* Sets the rendering (formatting) function for a column. See {@link Ext.util.Format} for some
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* default formatting functions.
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* @param {Number} col The column index
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* @param {Function} fn The function to use to process the cell's raw data
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* to return HTML markup for the grid view. The render function is called with
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* the following parameters:<ul>
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* <li><b>value</b> : Object<p class="sub-desc">The data value for the cell.</p></li>
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* <li><b>metadata</b> : Object<p class="sub-desc">An object in which you may set the following attributes:<ul>
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* <li><b>css</b> : String<p class="sub-desc">A CSS class name to add to the cell's TD element.</p></li>
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* <li><b>attr</b> : String<p class="sub-desc">An HTML attribute definition string to apply to the data container element <i>within</i> the table cell
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* (e.g. 'style="color:red;"').</p></li></ul></p></li>
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* <li><b>record</b> : Ext.data.record<p class="sub-desc">The {@link Ext.data.Record} from which the data was extracted.</p></li>
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* <li><b>rowIndex</b> : Number<p class="sub-desc">Row index</p></li>
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* <li><b>colIndex</b> : Number<p class="sub-desc">Column index</p></li>
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* <li><b>store</b> : Ext.data.Store<p class="sub-desc">The {@link Ext.data.Store} object from which the Record was extracted.</p></li></ul>
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*/
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setRenderer : function(col, fn){
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this.config[col].renderer = fn;
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},
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<div id="method-Ext.grid.ColumnModel-getColumnWidth"></div>/**
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* Returns the width for the specified column.
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* @param {Number} col The column index
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* @return {Number}
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*/
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getColumnWidth : function(col){
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return this.config[col].width;
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},
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<div id="method-Ext.grid.ColumnModel-setColumnWidth"></div>/**
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* Sets the width for a column.
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* @param {Number} col The column index
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* @param {Number} width The new width
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* @param {Boolean} suppressEvent True to suppress firing the <code>{@link #widthchange}</code>
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* event. Defaults to false.
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*/
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setColumnWidth : function(col, width, suppressEvent){
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this.config[col].width = width;
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this.totalWidth = null;
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if(!suppressEvent){
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this.fireEvent("widthchange", this, col, width);
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}
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},
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<div id="method-Ext.grid.ColumnModel-getTotalWidth"></div>/**
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* Returns the total width of all columns.
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* @param {Boolean} includeHidden True to include hidden column widths
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* @return {Number}
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*/
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getTotalWidth : function(includeHidden){
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if(!this.totalWidth){
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this.totalWidth = 0;
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for(var i = 0, len = this.config.length; i < len; i++){
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if(includeHidden || !this.isHidden(i)){
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this.totalWidth += this.getColumnWidth(i);
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}
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}
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}
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return this.totalWidth;
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},
|
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<div id="method-Ext.grid.ColumnModel-getColumnHeader"></div>/**
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* Returns the header for the specified column.
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* @param {Number} col The column index
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* @return {String}
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*/
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getColumnHeader : function(col){
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return this.config[col].header;
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},
|
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<div id="method-Ext.grid.ColumnModel-setColumnHeader"></div>/**
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* Sets the header for a column.
|
* @param {Number} col The column index
|
* @param {String} header The new header
|
*/
|
setColumnHeader : function(col, header){
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this.config[col].header = header;
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this.fireEvent("headerchange", this, col, header);
|
},
|
|
<div id="method-Ext.grid.ColumnModel-getColumnTooltip"></div>/**
|
* Returns the tooltip for the specified column.
|
* @param {Number} col The column index
|
* @return {String}
|
*/
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getColumnTooltip : function(col){
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return this.config[col].tooltip;
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},
|
<div id="method-Ext.grid.ColumnModel-setColumnTooltip"></div>/**
|
* Sets the tooltip for a column.
|
* @param {Number} col The column index
|
* @param {String} tooltip The new tooltip
|
*/
|
setColumnTooltip : function(col, tooltip){
|
this.config[col].tooltip = tooltip;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-getDataIndex"></div>/**
|
* Returns the dataIndex for the specified column.
|
<pre><code>
|
// Get field name for the column
|
var fieldName = grid.getColumnModel().getDataIndex(columnIndex);
|
</code></pre>
|
* @param {Number} col The column index
|
* @return {String} The column's dataIndex
|
*/
|
getDataIndex : function(col){
|
return this.config[col].dataIndex;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-setDataIndex"></div>/**
|
* Sets the dataIndex for a column.
|
* @param {Number} col The column index
|
* @param {String} dataIndex The new dataIndex
|
*/
|
setDataIndex : function(col, dataIndex){
|
this.config[col].dataIndex = dataIndex;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-findColumnIndex"></div>/**
|
* Finds the index of the first matching column for the given dataIndex.
|
* @param {String} col The dataIndex to find
|
* @return {Number} The column index, or -1 if no match was found
|
*/
|
findColumnIndex : function(dataIndex){
|
var c = this.config;
|
for(var i = 0, len = c.length; i < len; i++){
|
if(c[i].dataIndex == dataIndex){
|
return i;
|
}
|
}
|
return -1;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-isCellEditable"></div>/**
|
* Returns true if the cell is editable.
|
<pre><code>
|
var store = new Ext.data.Store({...});
|
var colModel = new Ext.grid.ColumnModel({
|
columns: [...],
|
isCellEditable: function(col, row) {
|
var record = store.getAt(row);
|
if (record.get('readonly')) { // replace with your condition
|
return false;
|
}
|
return Ext.grid.ColumnModel.prototype.isCellEditable.call(this, col, row);
|
}
|
});
|
var grid = new Ext.grid.GridPanel({
|
store: store,
|
colModel: colModel,
|
...
|
});
|
</code></pre>
|
* @param {Number} colIndex The column index
|
* @param {Number} rowIndex The row index
|
* @return {Boolean}
|
*/
|
isCellEditable : function(colIndex, rowIndex){
|
return (this.config[colIndex].editable || (typeof this.config[colIndex].editable == "undefined" && this.config[colIndex].editor)) ? true : false;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-getCellEditor"></div>/**
|
* Returns the editor defined for the cell/column.
|
* @param {Number} colIndex The column index
|
* @param {Number} rowIndex The row index
|
* @return {Ext.Editor} The {@link Ext.Editor Editor} that was created to wrap
|
* the {@link Ext.form.Field Field} used to edit the cell.
|
*/
|
getCellEditor : function(colIndex, rowIndex){
|
return this.config[colIndex].getCellEditor(rowIndex);
|
},
|
|
<div id="method-Ext.grid.ColumnModel-setEditable"></div>/**
|
* Sets if a column is editable.
|
* @param {Number} col The column index
|
* @param {Boolean} editable True if the column is editable
|
*/
|
setEditable : function(col, editable){
|
this.config[col].editable = editable;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-isHidden"></div>/**
|
* Returns <tt>true</tt> if the column is <code>{@link Ext.grid.Column#hidden hidden}</code>,
|
* <tt>false</tt> otherwise.
|
* @param {Number} colIndex The column index
|
* @return {Boolean}
|
*/
|
isHidden : function(colIndex){
|
return !!this.config[colIndex].hidden; // ensure returns boolean
|
},
|
|
<div id="method-Ext.grid.ColumnModel-isFixed"></div>/**
|
* Returns <tt>true</tt> if the column is <code>{@link Ext.grid.Column#fixed fixed}</code>,
|
* <tt>false</tt> otherwise.
|
* @param {Number} colIndex The column index
|
* @return {Boolean}
|
*/
|
isFixed : function(colIndex){
|
return !!this.config[colIndex].fixed;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-isResizable"></div>/**
|
* Returns true if the column can be resized
|
* @return {Boolean}
|
*/
|
isResizable : function(colIndex){
|
return colIndex >= 0 && this.config[colIndex].resizable !== false && this.config[colIndex].fixed !== true;
|
},
|
<div id="method-Ext.grid.ColumnModel-setHidden"></div>/**
|
* Sets if a column is hidden.
|
<pre><code>
|
myGrid.getColumnModel().setHidden(0, true); // hide column 0 (0 = the first column).
|
</code></pre>
|
* @param {Number} colIndex The column index
|
* @param {Boolean} hidden True if the column is hidden
|
*/
|
setHidden : function(colIndex, hidden){
|
var c = this.config[colIndex];
|
if(c.hidden !== hidden){
|
c.hidden = hidden;
|
this.totalWidth = null;
|
this.fireEvent("hiddenchange", this, colIndex, hidden);
|
}
|
},
|
|
<div id="method-Ext.grid.ColumnModel-setEditor"></div>/**
|
* Sets the editor for a column and destroys the prior editor.
|
* @param {Number} col The column index
|
* @param {Object} editor The editor object
|
*/
|
setEditor : function(col, editor){
|
Ext.destroy(this.config[col].editor);
|
this.config[col].editor = editor;
|
},
|
|
<div id="method-Ext.grid.ColumnModel-destroy"></div>/**
|
* Destroys this column model by purging any event listeners, and removing any editors.
|
*/
|
destroy : function(){
|
for(var i = 0, c = this.config, len = c.length; i < len; i++){
|
Ext.destroy(c[i].editor);
|
}
|
this.purgeListeners();
|
}
|
});
|
|
// private
|
Ext.grid.ColumnModel.defaultRenderer = function(value){
|
if(typeof value == "string" && value.length < 1){
|
return " ";
|
}
|
return value;
|
};</pre>
|
</body>
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</html>
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