dojo_app/js/library/dijit/form/TextBox.js

define([
	"dojo/_base/declare", // declare
	"dojo/dom-construct", // domConstruct.create
	"dojo/dom-style", // domStyle.getComputedStyle
	"dojo/_base/kernel", // kernel.deprecated
	"dojo/_base/lang", // lang.hitch
	"dojo/on",
	"dojo/sniff", // has("ie") has("mozilla")
	"./_FormValueWidget",
	"./_TextBoxMixin",
	"dojo/text!./templates/TextBox.html",
	"../main"	// to export dijit._setSelectionRange, remove in 2.0
], function(declare, domConstruct, domStyle, kernel, lang, on, has,
			_FormValueWidget, _TextBoxMixin, template, dijit){

	// module:
	//		dijit/form/TextBox

	var TextBox = declare("dijit.form.TextBox" + (has("dojo-bidi") ? "_NoBidi" : ""), [_FormValueWidget, _TextBoxMixin], {
		// summary:
		//		A base class for textbox form inputs

		templateString: template,
		_singleNodeTemplate: '<input class="dijit dijitReset dijitLeft dijitInputField" data-dojo-attach-point="textbox,focusNode" autocomplete="off" type="${type}" ${!nameAttrSetting} />',

		_buttonInputDisabled: has("ie") ? "disabled" : "", // allows IE to disallow focus, but Firefox cannot be disabled for mousedown events

		baseClass: "dijitTextBox",

		postMixInProperties: function(){
			var type = this.type.toLowerCase();
			if(this.templateString && this.templateString.toLowerCase() == "input" || ((type == "hidden" || type == "file") && this.templateString == this.constructor.prototype.templateString)){
				this.templateString = this._singleNodeTemplate;
			}
			this.inherited(arguments);
		},

		postCreate: function(){
			this.inherited(arguments);

			if(has("ie") < 9){
				// IE INPUT tag fontFamily has to be set directly using STYLE
				// the defer gives IE a chance to render the TextBox and to deal with font inheritance
				this.defer(function(){
					try{
						var s = domStyle.getComputedStyle(this.domNode); // can throw an exception if widget is immediately destroyed
						if(s){
							var ff = s.fontFamily;
							if(ff){
								var inputs = this.domNode.getElementsByTagName("INPUT");
								if(inputs){
									for(var i=0; i < inputs.length; i++){
										inputs[i].style.fontFamily = ff;
									}
								}
							}
						}
					}catch(e){/*when used in a Dialog, and this is called before the dialog is
					 shown, s.fontFamily would trigger "Invalid Argument" error.*/}
				});
			}
		},

		_setPlaceHolderAttr: function(v){
			this._set("placeHolder", v);
			if(!this._phspan){
				this._attachPoints.push('_phspan');
				this._phspan = domConstruct.create('span', {
					// dijitInputField class gives placeHolder same padding as the input field
					// parent node already has dijitInputField class but it doesn't affect this <span>
					// since it's position: absolute.
					className: 'dijitPlaceHolder dijitInputField'
				}, this.textbox, 'after');
				this.own(
					on(this._phspan, "mousedown", function(evt){ evt.preventDefault(); }),
					on(this._phspan, "touchend, pointerup, MSPointerUp", lang.hitch(this, function(){
						// If the user clicks placeholder rather than the <input>, need programmatic focus.  Normally this
						// is done in _FormWidgetMixin._onFocus() but after [30663] it's done on a delay, which is ineffective.
						this.focus();
					}))
				);
			}
			this._phspan.innerHTML="";
			this._phspan.appendChild(this._phspan.ownerDocument.createTextNode(v));
			this._updatePlaceHolder();
		},

		_onInput: function(/*Event*/ evt){
			// summary:
			//		Called AFTER the input event has happened
			//		See if the placeHolder text should be removed or added while editing.
			this.inherited(arguments);
			this._updatePlaceHolder();
		},

		_updatePlaceHolder: function(){
			if(this._phspan){
				this._phspan.style.display = (this.placeHolder && !this.textbox.value) ? "" : "none";
			}
		},

		_setValueAttr: function(value, /*Boolean?*/ priorityChange, /*String?*/ formattedValue){
			this.inherited(arguments);
			this._updatePlaceHolder();
		},

		getDisplayedValue: function(){
			// summary:
			//		Deprecated.  Use get('displayedValue') instead.
			// tags:
			//		deprecated
			kernel.deprecated(this.declaredClass+"::getDisplayedValue() is deprecated. Use get('displayedValue') instead.", "", "2.0");
			return this.get('displayedValue');
		},

		setDisplayedValue: function(/*String*/ value){
			// summary:
			//		Deprecated.  Use set('displayedValue', ...) instead.
			// tags:
			//		deprecated
			kernel.deprecated(this.declaredClass+"::setDisplayedValue() is deprecated. Use set('displayedValue', ...) instead.", "", "2.0");
			this.set('displayedValue', value);
		},

		_onBlur: function(e){
			if(this.disabled){ return; }
			this.inherited(arguments);
			this._updatePlaceHolder();

			if(has("mozilla")){
				if(this.selectOnClick){
					// clear selection so that the next mouse click doesn't reselect
					this.textbox.selectionStart = this.textbox.selectionEnd = undefined;
				}
			}
		},

		_onFocus: function(/*String*/ by){
			if(this.disabled || this.readOnly){ return; }
			this.inherited(arguments);
			this._updatePlaceHolder();
		}
	});

	if(has("ie") < 9){
		TextBox.prototype._isTextSelected = function(){
			var range = this.ownerDocument.selection.createRange();
			var parent = range.parentElement();
			return parent == this.textbox && range.text.length > 0;
		};

		// Overrides definition of _setSelectionRange from _TextBoxMixin (TODO: move to _TextBoxMixin.js?)
		dijit._setSelectionRange = _TextBoxMixin._setSelectionRange = function(/*DomNode*/ element, /*Number?*/ start, /*Number?*/ stop){
			if(element.createTextRange){
				var r = element.createTextRange();
				r.collapse(true);
				r.moveStart("character", -99999); // move to 0
				r.moveStart("character", start); // delta from 0 is the correct position
				r.moveEnd("character", stop-start);
				r.select();
			}
		}
	}

	if(has("dojo-bidi")){
		TextBox = declare("dijit.form.TextBox", TextBox, {
			_setPlaceHolderAttr: function(v){
				this.inherited(arguments);
				this.applyTextDir(this._phspan);
			}
		});
	}

	return TextBox;
});