/** * A basic hidden field for storing hidden values in forms that need to be passed in the form * submit. * * This creates an actual input element with type="hidden" in the DOM. While its label is * {@link #hideLabel not rendered} by default, it is still a real component and may be sized * according to its owner container's layout. * * Because of this, in most cases it is more convenient and less problematic to simply * {@link Ext.form.action.Action#params pass hidden parameters} directly when * {@link Ext.form.Basic#submit submitting the form}. * * Example: * * @example * new Ext.form.Panel({ * title: 'My Form', * items: [{ * xtype: 'textfield', * fieldLabel: 'Text Field', * name: 'text_field', * value: 'value from text field' * }, { * xtype: 'hiddenfield', * name: 'hidden_field_1', * value: 'value from hidden field' * }], * * buttons: [{ * text: 'Submit', * handler: function() { * this.up('form').getForm().submit({ * params: { * hidden_field_2: 'value from submit call' * } * }); * } * }] * }); * * Submitting the above form will result in three values sent to the server: * * text_field=value+from+text+field&hidden;_field_1=value+from+hidden+field& * hidden_field_2=value+from+submit+call * */Ext.define('Ext.form.field.Hidden', { extend: 'Ext.form.field.Base', alias: ['widget.hiddenfield', 'widget.hidden'], alternateClassName: 'Ext.form.Hidden', focusable: false, inputType: 'hidden', isTextInput: false, hideLabel: true, hidden: true, ariaRole: 'presentation', initComponent: function() { this.formItemCls += '-hidden'; this.callParent(); }, /** * @private * Override. Treat undefined and null values as equal to an empty string value. */ isEqual: function(value1, value2) { return this.isEqualAsString(value1, value2); }, initEvents: Ext.emptyFn, /** * @method * @hide */ setSize: Ext.emptyFn, /** * @method * @hide */ setWidth: Ext.emptyFn, /** * @method * @hide */ setHeight: Ext.emptyFn, /** * @method * @hide */ setPosition: Ext.emptyFn, /** * @method * @hide */ setPagePosition: Ext.emptyFn, /** * @method * @hide */ markInvalid: Ext.emptyFn, /** * @method * @hide */ clearInvalid: Ext.emptyFn});