// Some general purpose JS functions for the iTop application

//IE 8 compatibility, copied from: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/IndexOf
if (!Array.prototype.indexOf) {
	
	if (false) // deactivated since it causes troubles: for(k in aData) => returns the indexOf function as first element on empty arrays !
	{
	Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) {
    	"use strict";
        if (this == null) {
        	throw new TypeError();
        }
        var t = Object(this);
        var len = t.length >>> 0;
        if (len === 0) {
        	return -1;
        }
        var n = 0;
        if (arguments.length > 1) {
        	n = Number(arguments[1]);
            if (n != n) { // shortcut for verifying if it's NaN
            	n = 0;
            } else if (n != 0 && n != Infinity && n != -Infinity) {
            	n = (n > 0 || -1) * Math.floor(Math.abs(n));
            }
        }
        if (n >= len) {
        	return -1;
        }
        var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);
        for (; k < len; k++) {
        	if (k in t && t[k] === searchElement) {
            	return k;
            }
        }
        return -1;
    }
	}
}
/**
 * Reload a truncated list
 */
aTruncatedLists = {}; // To keep track of the list being loaded, each member is an ajaxRequest object

function ReloadTruncatedList(divId, sSerializedFilter, sExtraParams)
{
	$('#'+divId).block();
	//$('#'+divId).blockUI();
	if (aTruncatedLists[divId] != undefined)
	{
		try
		{
			aAjaxRequest = aTruncatedLists[divId];
			aAjaxRequest.abort();
		}
		catch(e)
		{
			// Do nothing special, just continue
			console.log('Uh,uh, exception !');
		}
	}
	aTruncatedLists[divId] = $.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php?style=list',
	   { operation: 'ajax', filter: sSerializedFilter, extra_params: sExtraParams },
	     function(data)
	     {
			 aTruncatedLists[divId] = undefined;
			 if (data.length > 0)
			 {
				 $('#'+divId).html(data);
				 $('#'+divId+' .listResults').tableHover(); // hover tables
				 $('#'+divId+' .listResults').each( function()
					{
						var table = $(this);
						var id = $(this).parent();
						aTruncatedLists[divId] = undefined;
						var checkbox = (table.find('th:first :checkbox').length > 0);
						if (checkbox)
						{
							// There is a checkbox in the first column, don't make it sortable
							table.tablesorter( { headers: { 0: {sorter: false}}, widgets: ['myZebra', 'truncatedList']} ).tablesorterPager({container: $("#pager")}); // sortable and zebra tables
						}
						else
						{
							// There is NO checkbox in the first column, all columns are considered sortable
							table.tablesorter( { widgets: ['myZebra', 'truncatedList']} ).tablesorterPager({container: $("#pager"), totalRows:97, filter: sSerializedFilter, extra_params: sExtraParams }); // sortable and zebra tables
						}
					});
				 $('#'+divId).unblock();
			 }
		}
	 );
}
/**
 * Truncate a previously expanded list !
 */
function TruncateList(divId, iLimit, sNewLabel, sLinkLabel)
{
	$('#'+divId).block();
	var iCount = 0;
	$('#'+divId+' table.listResults tr:gt('+iLimit+')').each( function(){
			$(this).remove();
	});
	$('#lbl_'+divId).html(sNewLabel);
	$('#'+divId+' table.listResults tr:last td').addClass('truncated');
	$('#'+divId+' table.listResults').addClass('truncated');
	$('#trc_'+divId).html(sLinkLabel);
	$('#'+divId+' .listResults').trigger("update"); //  Reset the cache
	$('#'+divId).unblock();
}
/**
 * Reload any block -- used for periodic auto-reload
 */ 
function ReloadBlock(divId, sStyle, sSerializedFilter, sExtraParams)
{
	// Check if the user is not editing the list properties right now
	var bDialogOpen = false;
	var oDataTable = $('#'+divId+' :itop-datatable');
	var bIsDataTable = false;
	if (oDataTable.length > 0)
	{
		bDialogOpen = oDataTable.datatable('IsDialogOpen');
		bIsDataTable = true;
	}
	if (!bDialogOpen)
	{
		if (bIsDataTable)
		{
			oDataTable.datatable('DoRefresh');
		}
		else
		{
			$('#'+divId).block();
			
			$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php?style='+sStyle,
			   { operation: 'ajax', filter: sSerializedFilter, extra_params: sExtraParams },
			   function(data){
				 $('#'+divId).empty();
				 $('#'+divId).append(data);
				 $('#'+divId).removeClass('loading');
				}
			 );
		}
	}
}

/**
 * Update the display and value of a file input widget when the user picks a new file
 */ 
function UpdateFileName(id, sNewFileName)
{
	var aPath = sNewFileName.split('\\');
	var sNewFileName = aPath[aPath.length-1];

	$('#'+id).val(sNewFileName);
	$('#'+id).trigger('validate');
	$('#name_'+id).text(sNewFileName);
	return true;
}
/**
 * Reload a search form for the specified class
 */
function ReloadSearchForm(divId, sClassName, sBaseClass, sContext)
{
    var oDiv = $('#ds_'+divId);
	oDiv.block();
	// deprecated in jQuery 1.8 
	//var oFormEvents = $('#ds_'+divId+' form').data('events');
	var oForm = $('#ds_'+divId+' form');
	var oFormEvents = $._data(oForm[0], "events");

	// Save the submit handlers
    aSubmit = new Array();
	if ( (oFormEvents != null) && (oFormEvents.submit != undefined))
	{
		for(var index = 0; index < oFormEvents.submit.length; index++)
		{
			aSubmit [index ] = { data:oFormEvents.submit[index].data, namespace:oFormEvents.submit[index].namespace, handler:  oFormEvents.submit[index].handler};
		}
	}
	sAction =  $('#ds_'+divId+' form').attr('action');

	// Save the current values in the form
	var oMap = {};
	$('#ds_'+divId+" form :input[name!='']").each(function() {
		oMap[this.name] = this.value;
	});
	oMap.operation = 'search_form';
	oMap.className = sClassName;
	oMap.baseClass = sBaseClass;
	oMap.currentId = divId;
	oMap.action = sAction;
	
	$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php?'+sContext, oMap,
	   function(data) {
		   oDiv.empty();
		   oDiv.append(data);
		   if (aSubmit.length > 0)
		   {
			    var oForm = $('#ds_'+divId+' form'); // Form was reloaded, recompute it
				for(var index = 0; index < aSubmit.length; index++)
				{
					// Restore the previously bound submit handlers
					if (aSubmit[index].data != undefined)
					{
						oForm.bind('submit.'+aSubmit[index].namespace, aSubmit[index].data, aSubmit[index].handler)
					}
					else
					{
						oForm.bind('submit.'+aSubmit[index].namespace, aSubmit[index].handler)
					}
				}
		   }
		   oDiv.unblock();
		   oDiv.parent().resize(); // Inform the parent that the form has just been (potentially) resized
	   }
	 );
}

/**
 * Stores - in a persistent way - user specific preferences
 * depends on a global variable oUserPreferences created/filled by the iTopWebPage
 * that acts as a local -write through- cache
 */
function SetUserPreference(sPreferenceCode, sPrefValue, bPersistent)
{
	sPreviousValue = undefined;
	try
	{
		sPreviousValue = oUserPreferences[sPreferenceCode];
	}
	catch(err)
	{
		sPreviousValue = undefined;
	}
    oUserPreferences[sPreferenceCode] = sPrefValue;
    if (bPersistent && (sPrefValue != sPreviousValue))
    {
    	ajax_request = $.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php',
    						  { operation: 'set_pref', code: sPreferenceCode, value: sPrefValue} ); // Make it persistent
    }
}

/**
 * Get user specific preferences
 * depends on a global variable oUserPreferences created/filled by the iTopWebPage
 * that acts as a local -write through- cache
 */
function GetUserPreference(sPreferenceCode, sDefaultValue)
{
	var value = sDefaultValue;
	if ( oUserPreferences[sPreferenceCode] != undefined)
	{
		value = oUserPreferences[sPreferenceCode];
	}
	return value;
}

/**
 * Check/uncheck a whole list of checkboxes
 */
function CheckAll(sSelector, bValue)
{
	var value = bValue;
	$(sSelector).each( function() {
		if (this.checked != value)
		{	
			this.checked = value;
			$(this).trigger('change');
		}
	});
}


/**
 * Toggle (enabled/disabled) the specified field of a form
 */
function ToogleField(value, field_id)
{
	if (value)
	{
		$('#'+field_id).removeAttr('disabled');
	}
	else
	{
		$('#'+field_id).attr('disabled', 'disabled');
	}
	$('#'+field_id).trigger('update');
	$('#'+field_id).trigger('validate');
}

/**
 * For the fields that cannot be visually disabled, they can be blocked
 * @return
 */
function BlockField(field_id, bBlocked)
{
	if (bBlocked)
	{
		$('#'+field_id).block({ message: ' ** disabled ** '});
	}
	else
	{
		$('#'+field_id).unblock();
	}
}

/**
 * Updates (enables/disables) a "duration" field
 */
function ToggleDurationField(field_id)
{
	// Toggle all the subfields that compose the "duration" input
	aSubFields = new Array('d', 'h', 'm', 's');
	
	if ($('#'+field_id).attr('disabled'))
	{
		for(var i=0; i<aSubFields.length; i++)
		{
			$('#'+field_id+'_'+aSubFields[i]).attr('disabled', 'disabled');
		}
	}
	else
	{
		for(var i=0; i<aSubFields.length; i++)
		{
			$('#'+field_id+'_'+aSubFields[i]).removeAttr('disabled');
		}
	}
}

/**
 * PropagateCheckBox
 */
function PropagateCheckBox(bCurrValue, aFieldsList, bCheck)
{
	if (bCurrValue == bCheck)
	{
		for(var i=0;i<aFieldsList.length;i++)
		{
			$('#enable_'+aFieldsList[i]).attr('checked', bCheck);
			ToogleField(bCheck, aFieldsList[i]);
		}
	}
}

function FixTableSorter(table)
{
	if ($('th.header', table).length == 0)
	{
		// Table is not sort-able, let's fix it
		var checkbox = (table.find('th:first :checkbox').length > 0);
		if (checkbox)
		{
			// There is a checkbox in the first column, don't make it sort-able
			table.tablesorter( { headers: { 0: {sorter: false}}, widgets: ['myZebra', 'truncatedList']} ); // sort-able and zebra tables
		}
		else
		{
			// There is NO checkbox in the first column, all columns are considered sort-able
			table.tablesorter( { widgets: ['myZebra', 'truncatedList']} ); // sort-able and zebra tables
		}
	}
}

function DashletCreationDlg(sOQL)
{
	$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php', {operation: 'dashlet_creation_dlg', oql: sOQL}, function(data){
		$('body').append(data);
	});
	return false;
}

function ShortcutListDlg(sOQL, sDataTableId, sContext)
{
	var sDataTableName = 'datatable_'+sDataTableId;
	var oTableSettings = {
		oColumns: $('#'+sDataTableName).datatable('option', 'oColumns'),
		iPageSize: $('#'+sDataTableName).datatable('option', 'iPageSize')
	};
	var sTableSettings = JSON.stringify(oTableSettings);

	$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php?'+sContext, {operation: 'shortcut_list_dlg', oql: sOQL, table_settings: sTableSettings}, function(data){
		$('body').append(data);
	});
	return false;
}

function DisplayHistory(sSelector, sFilter, iCount, iStart)
{
	$(sSelector).block();
	var oParams = { operation: 'history_from_filter', filter: sFilter, start: iStart, count: iCount };
	$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php', oParams, function(data) {
			$(sSelector).html(data).unblock();
		}
	);
}