288 lines
No EOL
10 KiB
JavaScript
288 lines
No EOL
10 KiB
JavaScript
/*
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* Ext JS Library 1.0.1
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* Copyright(c) 2006-2007, Ext JS, LLC.
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* licensing@extjs.com
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*
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.form.TextField
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* @extends Ext.form.Field
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* Basic text field. Can be used as a direct replacement for traditional text inputs, or as the base
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* class for more sophisticated input controls (like {@link Ext.form.TextArea} and {@link Ext.form.ComboBox}).
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* @constructor
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* Creates a new TextField
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* @param {Object} config Configuration options
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*/
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Ext.form.TextField = function(config){
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Ext.form.TextField.superclass.constructor.call(this, config);
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this.addEvents({
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/**
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* @event autosize
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* Fires when the autosize function is triggered. The field may or may not have actually changed size
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* according to the default logic, but this event provides a hook for the developer to apply additional
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* logic at runtime to resize the field if needed.
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* @param {Ext.form.Field} this This text field
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* @param {Number} width The new field width
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*/
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autosize : true
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});
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};
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Ext.extend(Ext.form.TextField, Ext.form.Field, {
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/**
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* @cfg {Boolean} grow True if this field should automatically grow and shrink to its content
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*/
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grow : false,
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/**
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* @cfg {Number} growMin The minimum width to allow when grow = true (defaults to 30)
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*/
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growMin : 30,
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/**
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* @cfg {Number} growMax The maximum width to allow when grow = true (defaults to 800)
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*/
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growMax : 800,
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/**
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* @cfg {String} vtype A validation type name as defined in {@link Ext.form.VTypes} (defaults to null)
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*/
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vtype : null,
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/**
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* @cfg {String} maskRe An input mask regular expression that will be used to filter keystrokes that don't match (defaults to null)
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*/
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maskRe : null,
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/**
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* @cfg {Boolean} disableKeyFilter True to disable input keystroke filtering (defaults to false)
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*/
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disableKeyFilter : false,
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/**
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* @cfg {Boolean} allowBlank False to validate that the value length > 0 (defaults to true)
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*/
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allowBlank : true,
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/**
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* @cfg {Number} minLength Minimum input field length required (defaults to 0)
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*/
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minLength : 0,
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/**
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* @cfg {Number} maxLength Maximum input field length allowed (defaults to Number.MAX_VALUE)
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*/
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maxLength : Number.MAX_VALUE,
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/**
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* @cfg {String} minLengthText Error text to display if the minimum length validation fails (defaults to "The minimum length for this field is {minLength}")
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*/
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minLengthText : "The minimum length for this field is {0}",
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/**
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* @cfg {String} maxLengthText Error text to display if the maximum length validation fails (defaults to "The maximum length for this field is {maxLength}")
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*/
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maxLengthText : "The maximum length for this field is {0}",
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/**
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* @cfg {Boolean} selectOnFocus True to automatically select any existing field text when the field receives input focus (defaults to false)
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*/
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selectOnFocus : false,
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/**
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* @cfg {String} blankText Error text to display if the allow blank validation fails (defaults to "This field is required")
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*/
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blankText : "This field is required",
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/**
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* @cfg {Function} validator A custom validation function to be called during field validation (defaults to null).
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* If available, this function will be called only after the basic validators all return true, and will be passed the
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* current field value and expected to return boolean true if the value is valid or a string error message if invalid.
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*/
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validator : null,
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/**
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* @cfg {RegExp} regex A JavaScript RegExp object to be tested against the field value during validation (defaults to null).
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* If available, this regex will be evaluated only after the basic validators all return true, and will be passed the
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* current field value. If the test fails, the field will be marked invalid using {@link #regexText}.
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*/
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regex : null,
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/**
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* @cfg {String} regexText The error text to display if {@link #regex} is used and the test fails during validation (defaults to "")
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*/
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regexText : "",
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/**
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* @cfg {String} emptyText The default text to display in an empty field (defaults to null).
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*/
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emptyText : null,
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/**
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* @cfg {String} emptyClass The CSS class to apply to an empty field to style the {@link #emptyText} (defaults to
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* 'x-form-empty-field'). This class is automatically added and removed as needed depending on the current field value.
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*/
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emptyClass : 'x-form-empty-field',
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// private
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initEvents : function(){
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Ext.form.TextField.superclass.initEvents.call(this);
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if(this.validationEvent == 'keyup'){
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this.validationTask = new Ext.util.DelayedTask(this.validate, this);
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this.el.on('keyup', this.filterValidation, this);
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}
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else if(this.validationEvent !== false){
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this.el.on(this.validationEvent, this.validate, this, {buffer: this.validationDelay});
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}
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if(this.selectOnFocus || this.emptyText){
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this.on("focus", this.preFocus, this);
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if(this.emptyText){
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this.on('blur', this.postBlur, this);
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this.applyEmptyText();
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}
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}
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if(this.maskRe || (this.vtype && this.disableKeyFilter !== true && (this.maskRe = Ext.form.VTypes[this.vtype+'Mask']))){
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this.el.on("keypress", this.filterKeys, this);
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}
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if(this.grow){
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this.el.on("keyup", this.onKeyUp, this, {buffer:50});
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this.el.on("click", this.autoSize, this);
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}
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},
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filterValidation : function(e){
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if(!e.isNavKeyPress()){
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this.validationTask.delay(this.validationDelay);
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}
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},
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// private
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onKeyUp : function(e){
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if(!e.isNavKeyPress()){
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this.autoSize();
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}
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},
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/**
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* Resets the current field value to the originally-loaded value and clears any validation messages.
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* Also adds emptyText and emptyClass if the original value was blank.
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*/
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reset : function(){
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Ext.form.TextField.superclass.reset.call(this);
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this.applyEmptyText();
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},
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applyEmptyText : function(){
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if(this.rendered && this.emptyText && this.getRawValue().length < 1){
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this.setRawValue(this.emptyText);
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this.el.addClass(this.emptyClass);
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}
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},
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// private
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preFocus : function(){
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if(this.emptyText){
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if(this.getRawValue() == this.emptyText){
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this.setRawValue('');
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}
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this.el.removeClass(this.emptyClass);
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}
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if(this.selectOnFocus){
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this.el.dom.select();
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}
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},
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// private
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postBlur : function(){
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this.applyEmptyText();
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},
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// private
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filterKeys : function(e){
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var k = e.getKey();
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if(!Ext.isIE && (e.isNavKeyPress() || k == e.BACKSPACE || (k == e.DELETE && e.button == -1))){
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return;
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}
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var c = e.getCharCode();
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if(!this.maskRe.test(String.fromCharCode(c) || '')){
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e.stopEvent();
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}
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},
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setValue : function(v){
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if(this.emptyText && v !== undefined && v !== null && v !== ''){
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this.el.removeClass(this.emptyClass);
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}
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Ext.form.TextField.superclass.setValue.apply(this, arguments);
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},
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/**
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* Validates a value according to the field's validation rules and marks the field as invalid
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* if the validation fails
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* @param {Mixed} value The value to validate
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* @return {Boolean} True if the value is valid, else false
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*/
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validateValue : function(value){
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if(value.length < 1 || value === this.emptyText){ // if it's blank
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if(this.allowBlank){
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this.clearInvalid();
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return true;
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}else{
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this.markInvalid(this.blankText);
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return false;
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}
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}
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if(value.length < this.minLength){
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this.markInvalid(String.format(this.minLengthText, this.minLength));
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return false;
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}
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if(value.length > this.maxLength){
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this.markInvalid(String.format(this.maxLengthText, this.maxLength));
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return false;
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}
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if(this.vtype){
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var vt = Ext.form.VTypes;
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if(!vt[this.vtype](value)){
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this.markInvalid(this.vtypeText || vt[this.vtype +'Text']);
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return false;
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}
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}
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if(typeof this.validator == "function"){
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var msg = this.validator(value);
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if(msg !== true){
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this.markInvalid(msg);
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return false;
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}
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}
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if(this.regex && !this.regex.test(value)){
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this.markInvalid(this.regexText);
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return false;
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}
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return true;
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},
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/**
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* Selects text in this field
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* @param {Number} start (optional) The index where the selection should start (defaults to 0)
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* @param {Number} end (optional) The index where the selection should end (defaults to the text length)
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*/
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selectText : function(start, end){
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var v = this.getRawValue();
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if(v.length > 0){
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start = start === undefined ? 0 : start;
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end = end === undefined ? v.length : end;
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var d = this.el.dom;
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if(d.setSelectionRange){
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d.setSelectionRange(start, end);
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}else if(d.createTextRange){
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var range = d.createTextRange();
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range.moveStart("character", start);
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range.moveEnd("character", v.length-end);
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range.select();
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}
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}
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},
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/**
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* Automatically grows the field to accomodate the width of the text up to the maximum field width allowed.
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* This only takes effect if grow = true and fires the autosize event.
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*/
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autoSize : function(){
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if(!this.grow || !this.rendered){
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return;
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}
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if(!this.metrics){
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this.metrics = Ext.util.TextMetrics.createInstance(this.el);
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}
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var el = this.el;
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var v = el.dom.value + " ";
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var w = Math.min(this.growMax, Math.max(this.metrics.getWidth(v) + /* add extra padding */ 10, this.growMin));
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this.el.setWidth(w);
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this.fireEvent("autosize", this, w);
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}
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}); |