/*********************************************************************************
 * SugarCRM Community Edition is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2011 SugarCRM Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with
 * this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo. If the display of the logo is not reasonably feasible for
 * technical reasons, the Appropriate Legal Notices must display the words
 * "Powered by SugarCRM".
 ********************************************************************************/


Calendar = function() {};

Calendar.getHighestZIndex = function (containerEl)
{
   var highestIndex = 0;
   var currentIndex = 0;
   var els = Array();
   
   els = containerEl ? containerEl.getElementsByTagName('*') : document.getElementsByTagName('*');
   
   for(var i=0; i < els.length; i++)
   {
      currentIndex = YAHOO.util.Dom.getStyle(els[i], "zIndex");
      if(!isNaN(currentIndex) && currentIndex > highestIndex)
      { 
      	 highestIndex = parseInt(currentIndex); 
      }
   }
   
   return (highestIndex == Number.MAX_VALUE) ? Number.MAX_VALUE : highestIndex+1;
};

Calendar.setup = function (params) {

    YAHOO.util.Event.onDOMReady(function(){
    	
        var Event = YAHOO.util.Event;
        var Dom = YAHOO.util.Dom;
        var dialog;
        var calendar;
        var showButton = params.button ? params.button : params.buttonObj;
        var userDateFormat = params.ifFormat ? params.ifFormat : (params.daFormat ? params.daFormat : "m/d/Y");
        var inputField = params.inputField ? params.inputField : params.inputFieldObj;
        var dateFormat = userDateFormat.substr(0,10);
        var date_field_delimiter = /([-.\\/])/.exec(dateFormat)[0];
        dateFormat = dateFormat.replace(/[^a-zA-Z]/g,'');
        
        var monthPos = dateFormat.search(/m/);
        var dayPos = dateFormat.search(/d/);
        var yearPos = dateFormat.search(/Y/);         
        
        Event.on(Dom.get(showButton), "click", function() {

            if (!dialog) {
                                  
                dialog = new YAHOO.widget.SimpleDialog("container_" + showButton, {
                    visible:false,
                    context:[showButton, "tl", "bl"],
                    buttons:[],
                    draggable:false,
                    close:true,
                    zIndex: Calendar.getHighestZIndex(document.body)
                });
                
                dialog.setHeader(SUGAR.language.get('app_strings', 'LBL_MASSUPDATE_DATE'));
                var dialogBody = '<p class="callnav_today"><a href="javascript:void(0)"  id="callnav_today">' + SUGAR.language.get('app_strings', 'LBL_EMAIL_DATE_TODAY') + '</a></p><div id="' + showButton + '_div"></div>';
                dialog.setBody(dialogBody);
                dialog.render(document.body);

                //Since the cal div name is dynamic we need to add a custom class to override some default yui css styles
                Dom.addClass("container_" + showButton, "cal_panel");
                
                //Clear the date selection if the user clicks on today.
                Event.addListener("callnav_today", "click", function(){ 
                    calendar.clear();
                    var now = new Date();
                    //Reset the input field value
                    Dom.get(inputField).value = formatSelectedDate(now);
                    //Highlight the cell
                    var cellIndex = calendar.getCellIndex(now);
                    if(cellIndex > -1 )
                    {
                        var cell = calendar.cells[cellIndex];
                        Dom.addClass(cell, calendar.Style.CSS_CELL_SELECTED);
                    }
                    //Must return false to prevent onbeforeunload from firing in IE8
                    return false;
                });
                
                dialog.showEvent.subscribe(function() {
                    if (YAHOO.env.ua.ie) {
                        // Since we're hiding the table using yui-overlay-hidden, we 
                        // want to let the dialog know that the content size has changed, when
                        // shown
                        dialog.fireEvent("changeContent");
                    }
                });
                
                // Hide Calendar if we click anywhere in the document other than the calendar
                Event.on(document, "click", function(e) {
                	
                    if(!dialog)
                    {
                       return;	
                    }                	
                	
                    var el = Event.getTarget(e);                   
                    var dialogEl = dialog.element;
                    if (el != dialogEl && !Dom.isAncestor(dialogEl, el) && el != Dom.get(showButton) && !Dom.isAncestor(Dom.get(showButton), el)) {
                        dialog.hide();
                    }
                });                
            }

            // Lazy Calendar Creation - Wait to create the Calendar until the first time the button is clicked.
            if (!calendar) {
                var navConfig = {
                    strings : {
                        month: SUGAR.language.get('app_strings', 'LBL_CHOOSE_MONTH'),
                        year: SUGAR.language.get('app_strings', 'LBL_ENTER_YEAR'),
                        submit: SUGAR.language.get('app_strings', 'LBL_EMAIL_OK'),
                        cancel: SUGAR.language.get('app_strings', 'LBL_CANCEL_BUTTON_LABEL'),
                        invalidYear: SUGAR.language.get('app_strings', 'LBL_ENTER_VALID_YEAR')
                    },
                    monthFormat: YAHOO.widget.Calendar.SHORT,
                    initialFocus: "year"
                };               	
            	
                calendar = new YAHOO.widget.Calendar(showButton + '_div', {
                    iframe:false,
                    hide_blank_weeks:true,
                    navigator:navConfig
                });
                
                calendar.cfg.setProperty('DATE_FIELD_DELIMITER', date_field_delimiter);
                calendar.cfg.setProperty('MDY_DAY_POSITION', dayPos+1);
                calendar.cfg.setProperty('MDY_MONTH_POSITION', monthPos+1);
                calendar.cfg.setProperty('MDY_YEAR_POSITION', yearPos+1);
                
                //Configure the month and days label with localization support where defined
                if(typeof SUGAR.language.languages['app_list_strings'] != 'undefined' && SUGAR.language.languages['app_list_strings']['dom_cal_month_long'] != 'undefined')
                {
                	if(SUGAR.language.languages['app_list_strings']['dom_cal_month_long'].length == 13)
                	{
                	   SUGAR.language.languages['app_list_strings']['dom_cal_month_long'].shift();
                	}
                	calendar.cfg.setProperty('MONTHS_LONG', SUGAR.language.languages['app_list_strings']['dom_cal_month_long']);
                }
                
                if(typeof SUGAR.language.languages['app_list_strings'] != 'undefined'  && typeof SUGAR.language.languages['app_list_strings']['dom_cal_day_short'] != 'undefined')
                {
                	if(SUGAR.language.languages['app_list_strings']['dom_cal_day_short'].length == 8)
                	{
                	   SUGAR.language.languages['app_list_strings']['dom_cal_day_short'].shift();
                	}                	
                	calendar.cfg.setProperty('WEEKDAYS_SHORT', SUGAR.language.languages['app_list_strings']['dom_cal_day_short']);
                }

                var formatSelectedDate = function(selDate)
                {
                    var monthVal = selDate.getMonth() + 1; //Add one for month value
                    if(monthVal < 10)
                    {
                        monthVal = '0' + monthVal;
                    }

                    var dateVal = selDate.getDate();

                    if(dateVal < 10)
                    {
                        dateVal = '0' + dateVal;
                    }

                    var yearVal = selDate.getFullYear();

                    selDate = '';
                    if(monthPos == 0)
                    {
                        selDate = monthVal;
                    }
                    else if(dayPos == 0)
                    {
                        selDate = dateVal;
                    }
                    else
                    {
                        selDate = yearVal;
                    }

                    if(monthPos == 1)
                    {
                        selDate += date_field_delimiter + monthVal;
                    }
                    else if(dayPos == 1)
                    {
                        selDate += date_field_delimiter + dateVal;
                    }
                    else
                    {
                        selDate += date_field_delimiter + yearVal;
                    }

                    if(monthPos == 2)
                    {
                        selDate += date_field_delimiter + monthVal;
                    }
                    else if(dayPos == 2)
                    {
                        selDate += date_field_delimiter + dateVal;
                    }
                    else
                    {
                        selDate += date_field_delimiter + yearVal;
                    }

                    return selDate;
                };
                
                calendar.selectEvent.subscribe(function() {
                    var input = Dom.get(inputField);
					if (calendar.getSelectedDates().length > 0) {

                        input.value = formatSelectedDate(calendar.getSelectedDates()[0]);
                        
                        if(params.comboObject)
                        {
                           params.comboObject.update();
                        }
                    } else {
                        input.value = "";
                    }
					
					//bug 44147 fix
                    //does not trigger onchange event
                    if(input.onchange)
                    	input.onchange();
                    //end bugfix
                    

                    dialog.hide();
					//Fire any on-change events for this input field
					SUGAR.util.callOnChangeListers(input);
                });

                calendar.renderEvent.subscribe(function() {
                    // Tell Dialog it's contents have changed, which allows 
                    // container to redraw the underlay (for IE6/Safari2)
                    dialog.fireEvent("changeContent");
                });
               
            }
            
            var seldate = calendar.getSelectedDates();
            if (Dom.get(inputField).value.length > 0) {
            	val = new Date(Dom.get(inputField).value);
            	if(!isNaN(val.getTime()))
            	{
	            	calendar.cfg.setProperty("selected", Dom.get(inputField).value);
	                seldate = Dom.get(inputField).value.split(date_field_delimiter);       	
	            	calendar.cfg.setProperty("pagedate", seldate[monthPos] + calendar.cfg.getProperty("DATE_FIELD_DELIMITER") + seldate[yearPos]);
	            }
            } else if (seldate.length > 0) {
                // Set the pagedate to show the selected date if it exists
                calendar.cfg.setProperty("selected", seldate[0]);
                var month = seldate[0].getMonth() + 1;
                var year = seldate[0].getFullYear();
                calendar.cfg.setProperty("pagedate", month + calendar.cfg.getProperty("DATE_FIELD_DELIMITER") + year);         	
            }      

            calendar.render();
            dialog.show();
        });
    });	
};