source: trunk/prototype/app/plugins/watermark/jquery.watermarkinput.js @ 5341

/*
 * Copyright (c) 2007 Josh Bush (digitalbush.com)
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:

 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE. 
 */
 
/*
 * Version: Beta 1
 * Release: 2007-06-01
 */ 
(function($) {
        var map=new Array();
        $.Watermark = {
                ShowAll:function(){
                        for (var i=0;i<map.length;i++){
                                if(map[i].obj.val()==""){
                                        map[i].obj.val(map[i].text);                                    
                                        map[i].obj.css("color",map[i].WatermarkColor);
                                }else{
                                    map[i].obj.css("color",map[i].DefaultColor);
                                }
                        }
                },
                HideAll:function(){
                        for (var i=0;i<map.length;i++){
                                if(map[i].obj.val()==map[i].text)
                                        map[i].obj.val("");                                     
                        }
                }
        }
        
        $.fn.Watermark = function(text,color) {
                if(!color)
                        color="#aaa";
                return this.each(
                        function(){             
                                var input=$(this);
                                var defaultColor=input.css("color");
                                map[map.length]={text:text,obj:input,DefaultColor:defaultColor,WatermarkColor:color};
                                function clearMessage(){
                                        if(input.val()==text)
                                                input.val("");
                                        input.css("color",defaultColor);
                                }

                                function insertMessage(){
                                        if(input.val().length==0 || input.val()==text){
                                                input.val(text);
                                                input.css("color",color);       
                                        }else
                                                input.css("color",defaultColor);                                
                                }

                                input.focus(clearMessage);
                                input.blur(insertMessage);                                                              
                                input.change(insertMessage);
                                
                                insertMessage();
                        }
                );
        };
})(jQuery);