source: Dev/trunk/src/client/dijit/form/SimpleTextarea.js @ 529

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

        // module:
        //              dijit/form/SimpleTextarea

        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 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(this.ownerDocument.selection){ //IE
                                                textarea.focus();
                                                var range = this.ownerDocument.selection.createRange();
                                                // delete overflow characters
                                                range.moveStart("character", -overflow);
                                                range.text = '';
                                                // show cursor
                                                range.select();
                                        }
                                }
                        }
                        this.inherited(arguments);
                }
        });
});