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POExtJS 4 ComboBox multiSelect display number of selected values
 

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  1. POExtJS 4 ComboBox multiSelect display number of selected values
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    <p>I am writing a POC and my client wishes to display the number of selected values underneath a multi-select combo box.</p> <p>I can get the number of values from the select event listener but wanted to encapsulate the functionality in the component itself rather than have <em>DIV</em> where i perform a DOM update.</p> <p>The code for the multi-select combo box is as follows:</p> <pre><code>Ext.onReady(function () { // The data store containing the list of states var states = Ext.create('Ext.data.Store', { fields: ['abbr', 'name'], data: [{ name: 'ALABAMA', abbreviation: 'AL' }, { name: 'ALASKA', abbreviation: 'AK' }, { name: 'AMERICAN SAMOA', abbreviation: 'AS' }, { name: 'ARIZONA', abbreviation: 'AZ' }, { name: 'ARKANSAS', abbreviation: 'AR' }, { name: 'CALIFORNIA', abbreviation: 'CA' }, { name: 'COLORADO', abbreviation: 'CO' }, { name: 'CONNECTICUT', abbreviation: 'CT' }, { name: 'DELAWARE', abbreviation: 'DE' }, { name: 'DISTRICT OF COLUMBIA', abbreviation: 'DC' }, { name: 'FEDERATED STATES OF MICRONESIA', abbreviation: 'FM' }, { name: 'FLORIDA', abbreviation: 'FL' }, { name: 'GEORGIA', abbreviation: 'GA' }, { name: 'GUAM', abbreviation: 'GU' }, { name: 'HAWAII', abbreviation: 'HI' }, { name: 'IDAHO', abbreviation: 'ID' }, { name: 'ILLINOIS', abbreviation: 'IL' }, { name: 'INDIANA', abbreviation: 'IN' }, { name: 'IOWA', abbreviation: 'IA' }, { name: 'KANSAS', abbreviation: 'KS' }, { name: 'KENTUCKY', abbreviation: 'KY' }, { name: 'LOUISIANA', abbreviation: 'LA' }, { name: 'MAINE', abbreviation: 'ME' }, { name: 'MARSHALL ISLANDS', abbreviation: 'MH' }, { name: 'MARYLAND', abbreviation: 'MD' }, { name: 'MASSACHUSETTS', abbreviation: 'MA' }, { name: 'MICHIGAN', abbreviation: 'MI' }, { name: 'MINNESOTA', abbreviation: 'MN' }, { name: 'MISSISSIPPI', abbreviation: 'MS' }, { name: 'MISSOURI', abbreviation: 'MO' }, { name: 'MONTANA', abbreviation: 'MT' }, { name: 'NEBRASKA', abbreviation: 'NE' }, { name: 'NEVADA', abbreviation: 'NV' }, { name: 'NEW HAMPSHIRE', abbreviation: 'NH' }, { name: 'NEW JERSEY', abbreviation: 'NJ' }, { name: 'NEW MEXICO', abbreviation: 'NM' }, { name: 'NEW YORK', abbreviation: 'NY' }, { name: 'NORTH CAROLINA', abbreviation: 'NC' }, { name: 'NORTH DAKOTA', abbreviation: 'ND' }, { name: 'NORTHERN MARIANA ISLANDS', abbreviation: 'MP' }, { name: 'OHIO', abbreviation: 'OH' }, { name: 'OKLAHOMA', abbreviation: 'OK' }, { name: 'OREGON', abbreviation: 'OR' }, { name: 'PALAU', abbreviation: 'PW' }, { name: 'PENNSYLVANIA', abbreviation: 'PA' }, { name: 'PUERTO RICO', abbreviation: 'PR' }, { name: 'RHODE ISLAND', abbreviation: 'RI' }, { name: 'SOUTH CAROLINA', abbreviation: 'SC' }, { name: 'SOUTH DAKOTA', abbreviation: 'SD' }, { name: 'TENNESSEE', abbreviation: 'TN' }, { name: 'TEXAS', abbreviation: 'TX' }, { name: 'UTAH', abbreviation: 'UT' }, { name: 'VERMONT', abbreviation: 'VT' }, { name: 'VIRGIN ISLANDS', abbreviation: 'VI' }, { name: 'VIRGINIA', abbreviation: 'VA' }, { name: 'WASHINGTON', abbreviation: 'WA' }, { name: 'WEST VIRGINIA', abbreviation: 'WV' }, { name: 'WISCONSIN', abbreviation: 'WI' }, { name: 'WYOMING', abbreviation: 'WY' }] }); // Create the combo box, attached to the states data store Ext.create('Ext.form.ComboBox', { labelAlign: 'top', labelPad: 10, fieldLabel: 'Choose State', store: states, queryMode: 'local', editable: false, displayField: 'name', valueField: 'abbreviation', renderTo: Ext.getBody(), multiSelect: true, width: 400, displayTpl: '&lt;tpl for="."&gt;' + '{name}' + '&lt;tpl if="xindex &lt; xcount"&gt;, &lt;/tpl&gt;' + '&lt;/tpl&gt;', listConfig: { itemTpl: '{name} &lt;div class="chkbox"&gt;&lt;/div&gt;' }, listeners: { select: function (combo, records) { console.log(records.length); } } }); }); </code></pre> <p>Is there any easy way to achieve this?</p>
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