/*
 * Trim a string
 */
function trim(str) {
    return str.replace(/^\s*/, "").replace(/\s*$/, "");
}

/*
 * Check if the string is email
 */
function isEmail(email){
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   return reg.test(email);
}

/*
 * Merge two list string into one. The list string contains items separated by ','
 * The merged string eliminate duplicate items. 
 */
function mergeList(list1, list2){
	var listArray1 = list1.split(',');
	var listArray2 = list2.split(',');
	var mergedArray = listArray1.concat(listArray2);
	var trimedArray = new Array();
	
	// Eliminate empty items and trim other items
	for(key in mergedArray){
		var trimed = trim(mergedArray[key]);
		if(trimed.length > 0){
			trimedArray.push(trimed);
		}
	}
	
	// Eliminate duplicates
	mergedArray = eliminateDuplicates(trimedArray);
	return mergedArray.join(', ');
}

/*
 * Subtract 2nd list string from the 1st. The items in the second list will be deleted
 * from the first list. 
 */
function subtractList(list1, list2){
	var listArray1 = trimArray(list1.split(','));
	var listArray2 = trimArray(list2.split(','));
	var indexArray = new Array();
	var result = new Array();
	
	// Build index of list2
	for(key in listArray2){
		if(listArray2[key]!=''){
			indexArray[listArray2[key]] = 1;
		}
	}
	
	for(key in listArray1){
		if(indexArray[listArray1[key]]==undefined){
			// This item doesn't exist in list2, add it to the result
			result.push(listArray1[key]);
		}
	}
	
	return result.join(', ');
}

/*
 * Trim items in an array
 */
function trimArray(arr){
	var out = new Array();
	for(key in arr){
		out.push(trim(arr[key]));
	}
	return out;
}

/*
 * Eliminate duplicate items in an array
 */
function eliminateDuplicates(arr) { 
	var i,
		len=arr.length, 
		out=[], 
		obj={}; 

	for (i=0;i<len;i++) { 
		obj[arr[i]]=0; 
	} 
	for (i in obj) { 
		out.push(i); 
	} 
	return out; 
} 

/*
 * Get file base name
 */
function basename(path, suffix) {
	var filename = path.replace(/^.*[\/\\]/g, '');
	if (typeof(suffix) == 'string' && filename.substr(filename.length-suffix.length) == suffix) {
		filename = filename.substr(0, filename.length-suffix.length);
	}
	
	return filename;
} 

/*
 * Get user input from a popup window
 */
function getUserInput(panelConfig, panelContent, callback){
	// Delete original input popup window
	jQuery('#cms_util_userinput').remove();
	jQuery('#cms_util_userinput_panel').remove();
	jQuery('#cms_util_userinput_bg').remove();
	
	// Create background panel
	jQuery('body').append('<div id="cms_util_userinput_bg" style="position:absolute;width:100%;height:' + jQuery('body').height() + 'px;top:0;left:0;z-index:1000;background-color:#000">');
	jQuery('#cms_util_userinput_bg').css({'opacity':0.1});

	// Get popup window config
	var width = '500px;';
	var top = '200px';
	
	if(panelConfig!=null && panelConfig!=undefined){
		if(panelConfig['width']!=undefined) width=panelConfig['width'];
		if(panelConfig['top']!=undefined) top=panelConfig['top'];
	}
	
	// Create popup panel
	jQuery('body').append('<div id="cms_util_userinput_panel" style="position:absolute;width:100%;height:' + jQuery('body').height() + 'px;top:0;left:0;z-index:1002;"></div>');

	// Create popup window
	jQuery('#cms_util_userinput_panel').append('<div id="cms_util_userinput" style="position:relative;width:' + width + ';height:0;margin:' + top + ' auto 0;background-color:#fff;border:1px #ccc solid;overflow:hidden;padding:15px;"></div>');
	jQuery('#cms_util_userinput').append(panelContent);
	jQuery('#cms_util_userinput').append('<div style="width:100%;text-align:center;margin-top:10px;">'
			+ '<input type="button" id="cms_util_userinput_ok" value="OK">&nbsp;&nbsp;&nbsp;&nbsp;'
			+ '<input type="button" id="cms_util_userinput_cancel" value="Cancel">'
			+ '</div>');
	
	// Animate the display of input box
	jQuery('#cms_util_userinput').css({'height':'auto'});
	var height=jQuery('#cms_util_userinput').height();
	jQuery('#cms_util_userinput').css({'height':'0'});
	jQuery('#cms_util_userinput').animate({'height':height+'px'},500);

	// Click on panel event
	jQuery('#cms_util_userinput_bg').click(function(){
		// Clean panel
		jQuery('#cms_util_userinput').animate({'height':'0'}, 500, function(){
			jQuery('#cms_util_userinput').remove();
			jQuery('#cms_util_userinput_panel').remove();
			jQuery('#cms_util_userinput_bg').remove();
		});
		callback(new Array());
	});

	// Ok Event
	jQuery('#cms_util_userinput_ok').click(function(){
		// Get user input
		var userInput = new Array();
		jQuery('#cms_util_userinput input, #cms_util_userinput textarea, #cms_util_userinput select').each(function(){
			var name = jQuery(this).attr('name');
			if(name == undefined || name == ''){
				name = jQuery(this).attr('id');
				if(name == undefined || name == ''){
					return;
				}
			}
			
			var value = jQuery(this).val();
			userInput[name] = value;
		});

		// Clean panel
		jQuery('#cms_util_userinput').animate({'height':'0'}, 500, function(){
			jQuery('#cms_util_userinput').remove();
			jQuery('#cms_util_userinput_panel').remove();
			jQuery('#cms_util_userinput_bg').remove();
		});

		callback(userInput);
	});

	// Cancel event
	jQuery('#cms_util_userinput_cancel').click(function(){
		// Clean panel
		jQuery('#cms_util_userinput').animate({'height':'0'}, 500, function(){
			jQuery('#cms_util_userinput').remove();
			jQuery('#cms_util_userinput_panel').remove();
			jQuery('#cms_util_userinput_bg').remove();
		});

		callback(new Array());
	});
}

/*
 * Convert plain text to permalink
 */
function toPermalink(permalink){
	permalink = permalink.toLowerCase().replace(/[ ]/g,'-');	// /g means search all
	permalink = permalink.replace(/[^a-zA-Z0-9\-\/\.]/g,'');
	while(permalink.indexOf('--')!=-1){
		permalink = permalink.replace(/\-\-/g,'-');
	}
	return permalink;
}

/*
 * Get the current date and time
 */
function getDateTime(){
	var currentTime = new Date()
	var year = currentTime.getFullYear();
	var month = currentTime.getMonth() + 1
	var day = currentTime.getDate()+1;
	var hours = currentTime.getHours()
	var minutes = currentTime.getMinutes()
	var seconds = currentTime.getSeconds();
	
	return '' + year + '-' + month + '-' + day + ' ' + hours + ':' + minutes + ':' + seconds;
}

/*
 * Restore the height of a object
 */
function restoreHeight(object, time){
	jQuery(object).stop();
	jQuery(object).css({'height':'auto'});
	var height=jQuery(object).height();
	jQuery(object).css({'height':'0'});
	jQuery(object).animate({'height':height+'px'}, 
						   time, 
						   function(){
								jQuery(object).css({'height':'auto'});
						   });
}

/*
 * Solution for target="_blank". Use class="newWindow" to indicate open a new window for the link
 */
jQuery(document).ready(function(){
	refreshNewWindowLink();
});

function refreshNewWindowLink(){
	jQuery('.newWindow').unbind('click.cms');
	jQuery('.newWindow').bind('click.cms', function(){
		var href = jQuery(this).attr('href');
		window.open(href);
		return false;
	});
}