typedef enum addingMode {
	    NAME,
	    BARCODE,
	    SCAN,
	} ADDING_MODE;

	@interface ProductViewController : UITableViewController {

	    UITableView *productTableView;
	    NSString *productName, *productCategory, *productBarcode;
	    UIButton *productScan;//to scan a product
	    UITextField *nameTextField, *categoryTextField, *barcodeTextField;
	    NSMutableArray *listsTable1;
	    ADDING_MODE addMode;
	    UISegmentedControl *segmentedControl;
	}

	@property(nonatomic, retain) UITextField *nameTextField;
	@property(nonatomic, retain) UITextField *categoryTextField;
	@property(nonatomic, retain) UITextField *barcodeTextField;
	@property(nonatomic, retain) NSString *productName;
	@property(nonatomic, retain) NSString *productCategory;
	@property(nonatomic, retain) NSString *productBarcode;

	-(void) pickOne:(id)sender;

	@end



	#import "ProductViewController.h"

	@implementation ProductViewController

	@synthesize productName, productCategory, productBarcode;
	@synthesize nameTextField, categoryTextField, barcodeTextField;


	// Implement loadView to create a view hierarchy programmatically, without using a nib.
	- (void)loadView {
	    [super loadView];

	    float navBarHeight = self.navigationController.navigationBar.frame.size.height;
	    float toolbarHeight = self.navigationController.toolbar.frame.size.height;
	    CGRect tableFrame = CGRectMake(0, navBarHeight, 320, 480 - navBarHeight - toolbarHeight);
	    self.tableView  = [[UITableView alloc] initWithFrame:tableFrame style:UITableViewStyleGrouped];
	    self.tableView.delegate = self;
	    self.tableView.dataSource = self;

	    //Two text fields to be showw together in a section when clicking the button Name
	    nameTextField = [[UITextField alloc] initWithFrame:CGRectMake(20, 10, 300, 40)];
	    [nameTextField setDelegate:self];
	    [nameTextField setPlaceholder:@"Product name"];

	    categoryTextField = [[UITextField alloc] initWithFrame:CGRectMake(20, 10, 300, 40)];
	    [categoryTextField setDelegate:self];
	    [categoryTextField setReturnKeyType:UIReturnKeyDone];
	    [categoryTextField setPlaceholder:@"Category"];

	    //One text field to be shown when the button Barcode is shown
	    barcodeTextField = [[UITextField alloc] initWithFrame:CGRectMake(20, 10, 300, 40)];
	    [barcodeTextField setPlaceholder:@""];
	    [barcodeTextField setKeyboardType:UIKeyboardTypeNumberPad];
	    [barcodeTextField setDelegate:self];

	    //Segmented control
	    NSArray *itemArray = [NSArray arrayWithObjects:@"Name", @"Barcode", @"Scan", nil];
	    segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray];
	    segmentedControl.frame = CGRectMake(9, 0, 302, 50);
	    segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;
	    segmentedControl.selectedSegmentIndex = 0;
	    [segmentedControl addTarget:self action:@selector(pickOne:) forControlEvents:UIControlEventValueChanged];
	    addMode = NAME;
	}

	-(void) scanButtonPressed {
	    NSLog(@"scan button pressed");
	    //Showing vamera in ModalView
	}


	-(BOOL)textFieldShouldReturn:(UITextField *)textField {
	    if(textField == nameTextField) {
	        [categoryTextField becomeFirstResponder];
	    }
	    if(textField == categoryTextField) {
	        [barcodeTextField becomeFirstResponder];
	    }
	    return YES;
	}


	#pragma mark Table view methods

	- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
	    return 2;
	}


	// Customize the number of rows in the table view.
	- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	    if(section == 0) {
	        return 1;
	    }
	    else if(section == 1){
	        if(addMode == NAME) {
	            return 2;
	        }
	        if(addMode == BARCODE) {
	            return 1;
	        }
	    }
	    return 0;
	}


	// Customize the appearance of table view cells.
	- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	    static NSString *CellIdentifier = @"Cell";


	    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
	    if (cell == nil) {
	        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
	        [cell setEditing:YES];
	        [cell setSelectionStyle:UITableViewCellSelectionStyleNone];
	    }



	    if(indexPath.section == 0) {
	        [cell addSubview:segmentedControl];
	        [segmentedControl release];
	    }

	    else if(indexPath.section == 1) {
	        if(addMode == NAME) {
	            if(indexPath.row == 0) {
	                [cell addSubview:nameTextField];
	            }
	            else if(indexPath.row == 1) {
	                [cell addSubview:categoryTextField];
	            }
	        }
	        else if(addMode == BARCODE) {
	            [cell addSubview:barcodeTextField];
	        }
	        else if(addMode == SCAN){

	            //Scanning mode
	        }
	    }
	    return cell;
	}

	-(void) pickOne:(id)sender {
	    addMode = [segmentedControl selectedSegmentIndex];
	    NSIndexSet *indexSet = [[NSIndexSet alloc] initWithIndexesInRange:NSMakeRange(1, 1)];
	    [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationRight];
	    [indexSet release]; 
	}



	// Override to support conditional editing of the table view.
	- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
	    return YES;
	}


	// Override to support rearranging the table view.
	- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
	}


	- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
	    // The header for the section is the region name -- get this from the region at the section index.
	    if(section == 0) {
	        return @"Add new product";
	    }
	    else {
	        if(addMode == NAME)
	            return @"Product information";
	        if(addMode == BARCODE)
	            return @"Enter a product barcode";
	    }
	    return @"";
	}