/*
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This file is part of Ext JS 4.2
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Copyright (c) 2011-2013 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department
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at http://www.sencha.com/contact.
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Build date: 2013-05-16 14:36:50 (f9be68accb407158ba2b1be2c226a6ce1f649314)
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*/
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/**
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* A basic hidden field for storing hidden values in forms that need to be passed in the form submit.
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*
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* This creates an actual input element with type="submit" in the DOM. While its label is
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* {@link #hideLabel not rendered} by default, it is still a real component and may be sized according
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* to its owner container's layout.
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*
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* Because of this, in most cases it is more convenient and less problematic to simply
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* {@link Ext.form.action.Action#params pass hidden parameters} directly when
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* {@link Ext.form.Basic#submit submitting the form}.
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*
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* Example:
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*
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* new Ext.form.Panel({
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* title: 'My Form',
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* items: [{
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* xtype: 'textfield',
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* fieldLabel: 'Text Field',
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* name: 'text_field',
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* value: 'value from text field'
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* }, {
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* xtype: 'hiddenfield',
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* name: 'hidden_field_1',
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* value: 'value from hidden field'
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* }],
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*
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* buttons: [{
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* text: 'Submit',
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* handler: function() {
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* this.up('form').getForm().submit({
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* params: {
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* hidden_field_2: 'value from submit call'
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* }
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* });
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* }
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* }]
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* });
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*
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* Submitting the above form will result in three values sent to the server:
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*
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* text_field=value+from+text+field&hidden;_field_1=value+from+hidden+field&hidden_field_2=value+from+submit+call
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*
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*/
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Ext.define('Ext.form.field.Hidden', {
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extend:'Ext.form.field.Base',
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alias: ['widget.hiddenfield', 'widget.hidden'],
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alternateClassName: 'Ext.form.Hidden',
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// private
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inputType : 'hidden',
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hideLabel: true,
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hidden: true,
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initComponent: function() {
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this.formItemCls += '-hidden';
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this.callParent();
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},
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/**
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* @private
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* Override. Treat undefined and null values as equal to an empty string value.
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*/
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isEqual: function(value1, value2) {
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return this.isEqualAsString(value1, value2);
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},
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// These are all private overrides
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initEvents: Ext.emptyFn,
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setSize : Ext.emptyFn,
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setWidth : Ext.emptyFn,
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setHeight : Ext.emptyFn,
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setPosition : Ext.emptyFn,
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setPagePosition : Ext.emptyFn,
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markInvalid : Ext.emptyFn,
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clearInvalid : Ext.emptyFn
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});
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