source: Dev/branches/rest-dojo-ui/client/dijit/form/SimpleTextarea.js @ 256

define([
        "dojo/_base/declare", // declare
        "dojo/dom-class", // domClass.add
        "dojo/_base/sniff", // has("ie") has("opera")
        "dojo/_base/window", // win.doc.selection win.doc.selection.createRange
        "./TextBox"
], function(declare, domClass, has, win, TextBox){

/*=====
        var TextBox = dijit.form.TextBox;
=====*/

// module:
//              dijit/form/SimpleTextarea
// summary:
//              A simple textarea that degrades, and responds to
//              minimal LayoutContainer usage, and works with dijit.form.Form.
//              Doesn't automatically size according to input, like Textarea.

return declare("dijit.form.SimpleTextarea", TextBox, {
        // summary:
        //              A simple textarea that degrades, and responds to
        //              minimal LayoutContainer usage, and works with dijit.form.Form.
        //              Doesn't automatically size according to input, like Textarea.
        //
        // example:
        //      |       <textarea data-dojo-type="dijit.form.SimpleTextarea" name="foo" value="bar" rows=30 cols=40></textarea>
        //
        // example:
        //      |       new dijit.form.SimpleTextarea({ rows:20, cols:30 }, "foo");

        baseClass: "dijitTextBox dijitTextArea",

        // rows: Number
        //              The number of rows of text.
        rows: "3",

        // rows: Number
        //              The number of characters per line.
        cols: "20",

        templateString: "<textarea ${!nameAttrSetting} data-dojo-attach-point='focusNode,containerNode,textbox' autocomplete='off'></textarea>",

        postMixInProperties: function(){
                // Copy value from srcNodeRef, unless user specified a value explicitly (or there is no srcNodeRef)
                // TODO: parser will handle this in 2.0
                if(!this.value && this.srcNodeRef){
                        this.value = this.srcNodeRef.value;
                }
                this.inherited(arguments);
        },

        buildRendering: function(){
                this.inherited(arguments);
                if(has("ie") && this.cols){ // attribute selectors is not supported in IE6
                        domClass.add(this.textbox, "dijitTextAreaCols");
                }
        },

        filter: function(/*String*/ value){
                // Override TextBox.filter to deal with newlines... specifically (IIRC) this is for IE which writes newlines
                // as \r\n instead of just \n
                if(value){
                        value = value.replace(/\r/g,"");
                }
                return this.inherited(arguments);
        },

        _onInput: function(/*Event?*/ e){
                // Override TextBox._onInput() to enforce maxLength restriction
                if(this.maxLength){
                        var maxLength = parseInt(this.maxLength);
                        var value = this.textbox.value.replace(/\r/g,'');
                        var overflow = value.length - maxLength;
                        if(overflow > 0){
                                var textarea = this.textbox;
                                if(textarea.selectionStart){
                                        var pos = textarea.selectionStart;
                                        var cr = 0;
                                        if(has("opera")){
                                                cr = (this.textbox.value.substring(0,pos).match(/\r/g) || []).length;
                                        }
                                        this.textbox.value = value.substring(0,pos-overflow-cr)+value.substring(pos-cr);
                                        textarea.setSelectionRange(pos-overflow, pos-overflow);
                                }else if(win.doc.selection){ //IE
                                        textarea.focus();
                                        var range = win.doc.selection.createRange();
                                        // delete overflow characters
                                        range.moveStart("character", -overflow);
                                        range.text = '';
                                        // show cursor
                                        range.select();
                                }
                        }
                }
                this.inherited(arguments);
        }
});

});