source: Dev/trunk/src/client/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');
                                // 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.
                                this._phspan = domConstruct.create('span',{ onmousedown:function(e){ e.preventDefault(); }, className:'dijitPlaceHolder dijitInputField'},this.textbox,'after');
                                this.own(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;
});