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MoreTableViewController.m
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MoreTableViewController.m
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//
// MoreTableViewController.m
// DateCell
//
// Created by Ajay Gautam on 3/9/14.
//
// BASED on Apple's DateCell source code
//
//
/*
File: MyTableViewController.m
Abstract: The main table view controller of this app.
Version: 1.5
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
Inc. ("Apple") in consideration of your agreement to the following
terms, and your use, installation, modification or redistribution of
this Apple software constitutes acceptance of these terms. If you do
not agree with these terms, please do not use, install, modify or
redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and
subject to these terms, Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this original Apple software (the
"Apple Software"), to use, reproduce, modify and redistribute the Apple
Software, with or without modifications, in source and/or binary forms;
provided that if you redistribute the Apple Software in its entirety and
without modifications, you must retain this notice and the following
text and disclaimers in all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or logos of Apple Inc. may
be used to endorse or promote products derived from the Apple Software
without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or
implied, are granted by Apple herein, including but not limited to any
patent rights that may be infringed by your derivative works or by other
works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Copyright (C) 2013 Apple Inc. All Rights Reserved.
*/
#import "MoreTableViewController.h"
#define kPickerAnimationDuration 0.40 // duration for the animation to slide the date picker into view
#define kDatePickerTag 99 // view tag identifiying the date picker view
#define kTitleKey @"title" // key for obtaining the data source item's title
#define kDateKey @"date" // key for obtaining the data source item's date value
// keep track of which rows have date cells
#define kDateStartRow 1
#define kDateEndRow 2
static NSString *kDateCellID = @"dateCell"; // the cells with the start or end date
static NSString *kDatePickerID = @"datePicker"; // the cell containing the date picker
static NSString *kOtherCell = @"otherCell"; // the remaining cells at the end
#pragma mark -
@interface MoreTableViewController ()
@property (nonatomic, strong) NSArray *dataArray;
@property (nonatomic, strong) NSDateFormatter *dateFormatter;
// keep track which indexPath points to the cell with UIDatePicker
@property (nonatomic, strong) NSIndexPath *datePickerIndexPath;
@property (assign) NSInteger pickerCellRowHeight;
@property (nonatomic, strong) UIDatePicker *pickerView;
@end
@implementation MoreTableViewController
- (UITableViewCell *) createCellWithIdetifier:(NSString *)cellId {
NSArray *reusableUiComponents = [[NSBundle mainBundle] loadNibNamed:@"ReusableUIComponents" owner:self options:nil];
if ([kDateCellID isEqualToString:cellId]) {
return reusableUiComponents[0];
}
if ([kDatePickerID isEqualToString:cellId]) {
return reusableUiComponents[1];
}
if ([kOtherCell isEqualToString:cellId]) {
return reusableUiComponents[2];
}
return nil;
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)setupDataSource {
// setup our data source
NSMutableDictionary *itemOne = [@{ kTitleKey : @"Tap a cell to change its date:" } mutableCopy];
NSMutableDictionary *itemTwo = [@{ kTitleKey : @"Start Date",
kDateKey : [NSDate date] } mutableCopy];
NSMutableDictionary *itemThree = [@{ kTitleKey : @"End Date",
kDateKey : [NSDate date] } mutableCopy];
NSMutableDictionary *itemFour = [@{ kTitleKey : @"(other item1)" } mutableCopy];
NSMutableDictionary *itemFive = [@{ kTitleKey : @"(other item2)" } mutableCopy];
self.dataArray = @[itemOne, itemTwo, itemThree, itemFour, itemFive];
self.dateFormatter = [[NSDateFormatter alloc] init];
[self.dateFormatter setDateStyle:NSDateFormatterShortStyle]; // show short-style date format
[self.dateFormatter setTimeStyle:NSDateFormatterNoStyle];
// obtain the picker view cell's height, works because the cell was pre-defined in our storyboard
UITableViewCell *pickerViewCellToCheck = [self createCellWithIdetifier:kDatePickerID];
self.pickerCellRowHeight = pickerViewCellToCheck.frame.size.height;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self setupDataSource];
self.title = @"DateCell";
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Utilities
/*! Returns the major version of iOS, (i.e. for iOS 6.1.3 it returns 6)
*/
NSUInteger UNUSED_DeviceSystemMajorVersion() // TODO - move this to Utils
{
static NSUInteger _deviceSystemMajorVersion = -1;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_deviceSystemMajorVersion = [[[[[UIDevice currentDevice] systemVersion] componentsSeparatedByString:@"."] objectAtIndex:0] intValue];
});
return _deviceSystemMajorVersion;
}
/*! Determines if the given indexPath has a cell below it with a UIDatePicker.
@param indexPath The indexPath to check if its cell has a UIDatePicker below it.
*/
- (BOOL)hasPickerForIndexPath:(NSIndexPath *)indexPath
{
BOOL hasDatePicker = NO;
NSInteger targetedRow = indexPath.row;
targetedRow++;
UITableViewCell *checkDatePickerCell =
[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:targetedRow inSection:0]];
UIDatePicker *checkDatePicker = (UIDatePicker *)[checkDatePickerCell viewWithTag:kDatePickerTag];
hasDatePicker = (checkDatePicker != nil);
return hasDatePicker;
}
/*! Updates the UIDatePicker's value to match with the date of the cell above it.
*/
- (void)updateDatePicker
{
if (self.datePickerIndexPath != nil)
{
UITableViewCell *associatedDatePickerCell = [self.tableView cellForRowAtIndexPath:self.datePickerIndexPath];
UIDatePicker *targetedDatePicker = (UIDatePicker *)[associatedDatePickerCell viewWithTag:kDatePickerTag];
if (targetedDatePicker != nil)
{
// we found a UIDatePicker in this cell, so update it's date value
//
NSDictionary *itemData = self.dataArray[self.datePickerIndexPath.row - 1];
[targetedDatePicker setDate:[itemData valueForKey:kDateKey] animated:NO];
// set the call action for the date picker to dateAction
[targetedDatePicker addTarget:self action:@selector(dateAction:) forControlEvents:UIControlEventValueChanged];
}
}
}
/*! Determines if the UITableViewController has a UIDatePicker in any of its cells.
*/
- (BOOL)hasInlineDatePicker
{
return (self.datePickerIndexPath != nil);
}
/*! Determines if the given indexPath points to a cell that contains the UIDatePicker.
@param indexPath The indexPath to check if it represents a cell with the UIDatePicker.
*/
- (BOOL)indexPathHasPicker:(NSIndexPath *)indexPath
{
return ([self hasInlineDatePicker] && self.datePickerIndexPath.row == indexPath.row);
}
/*! Determines if the given indexPath points to a cell that contains the start/end dates.
@param indexPath The indexPath to check if it represents start/end date cell.
*/
- (BOOL)indexPathHasDate:(NSIndexPath *)indexPath
{
BOOL hasDate = NO;
if ((indexPath.row == kDateStartRow) ||
(indexPath.row == kDateEndRow || ([self hasInlineDatePicker] && (indexPath.row == kDateEndRow + 1))))
{
hasDate = YES;
}
return hasDate;
}
#pragma mark - Table view data source
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
CGFloat height = ([self indexPathHasPicker:indexPath] ? self.pickerCellRowHeight : self.tableView.rowHeight);
return height;
}
//- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
//{
// return 1;
//}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([self hasInlineDatePicker])
{
// we have a date picker, so allow for it in the number of rows in this section
NSInteger numRows = self.dataArray.count;
return ++numRows;
}
return self.dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
NSString *cellID = kOtherCell;
if ([self indexPathHasPicker:indexPath])
{
// the indexPath is the one containing the inline date picker
cellID = kDatePickerID; // the current/opened date picker cell
}
else if ([self indexPathHasDate:indexPath])
{
// the indexPath is one that contains the date information
cellID = kDateCellID; // the start/end date cells
}
cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (!cell) {
cell = [self createCellWithIdetifier:cellID];
}
if (indexPath.row == 0)
{
// we decide here that first cell in the table is not selectable (it's just an indicator)
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
// if we have a date picker open whose cell is above the cell we want to update,
// then we have one more cell than the model allows
//
NSInteger modelRow = indexPath.row;
if (self.datePickerIndexPath != nil && self.datePickerIndexPath.row < indexPath.row)
{
modelRow--;
}
NSDictionary *itemData = self.dataArray[modelRow];
// proceed to configure our cell
if ([cellID isEqualToString:kDateCellID])
{
// we have either start or end date cells, populate their date field
//
cell.textLabel.text = [itemData valueForKey:kTitleKey];
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:[itemData valueForKey:kDateKey]];
}
else if ([cellID isEqualToString:kOtherCell])
{
// this cell is a non-date cell, just assign it's text label
//
cell.textLabel.text = [itemData valueForKey:kTitleKey];
}
return cell;
}
/*! Adds or removes a UIDatePicker cell below the given indexPath.
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)toggleDatePickerForSelectedIndexPath:(NSIndexPath *)indexPath
{
[self.tableView beginUpdates];
NSArray *indexPaths = @[[NSIndexPath indexPathForRow:indexPath.row + 1 inSection:0]];
// check if 'indexPath' has an attached date picker below it
if ([self hasPickerForIndexPath:indexPath])
{
// found a picker below it, so remove it
[self.tableView deleteRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
else
{
// didn't find a picker below it, so we should insert it
[self.tableView insertRowsAtIndexPaths:indexPaths
withRowAnimation:UITableViewRowAnimationFade];
}
[self.tableView endUpdates];
}
/*! Reveals the date picker inline for the given indexPath, called by "didSelectRowAtIndexPath".
@param indexPath The indexPath to reveal the UIDatePicker.
*/
- (void)displayInlineDatePickerForRowAtIndexPath:(NSIndexPath *)indexPath
{
// display the date picker inline with the table content
[self.tableView beginUpdates];
BOOL before = NO; // indicates if the date picker is below "indexPath", help us determine which row to reveal
if ([self hasInlineDatePicker])
{
before = self.datePickerIndexPath.row < indexPath.row;
}
BOOL sameCellClicked = (self.datePickerIndexPath.row - 1 == indexPath.row);
// remove any date picker cell if it exists
if ([self hasInlineDatePicker])
{
[self.tableView deleteRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.datePickerIndexPath.row inSection:0]]
withRowAnimation:UITableViewRowAnimationFade];
self.datePickerIndexPath = nil;
}
if (!sameCellClicked)
{
// hide the old date picker and display the new one
NSInteger rowToReveal = (before ? indexPath.row - 1 : indexPath.row);
NSIndexPath *indexPathToReveal = [NSIndexPath indexPathForRow:rowToReveal inSection:0];
[self toggleDatePickerForSelectedIndexPath:indexPathToReveal];
self.datePickerIndexPath = [NSIndexPath indexPathForRow:indexPathToReveal.row + 1 inSection:0];
}
// always deselect the row containing the start or end date
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
[self.tableView endUpdates];
// inform our date picker of the current date to match the current cell
[self updateDatePicker];
}
#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if ([kDateCellID isEqualToString:cell.reuseIdentifier])
{
[self displayInlineDatePickerForRowAtIndexPath:indexPath];
}
else
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}
#pragma mark - Actions
/*! User chose to change the date by changing the values inside the UIDatePicker.
@param sender The sender for this action: UIDatePicker.
*/
- (void)dateAction:(id)sender
{
NSIndexPath *targetedCellIndexPath = nil;
if ([self hasInlineDatePicker])
{
// inline date picker: update the cell's date "above" the date picker cell
//
targetedCellIndexPath = [NSIndexPath indexPathForRow:self.datePickerIndexPath.row - 1 inSection:0];
}
else
{
// external date picker: update the current "selected" cell's date
targetedCellIndexPath = [self.tableView indexPathForSelectedRow];
}
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:targetedCellIndexPath];
UIDatePicker *targetedDatePicker = sender;
// update our data model
NSMutableDictionary *itemData = self.dataArray[targetedCellIndexPath.row];
[itemData setValue:targetedDatePicker.date forKey:kDateKey];
// update the cell's date string
cell.detailTextLabel.text = [self.dateFormatter stringFromDate:targetedDatePicker.date];
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
/*
#pragma mark - Navigation
// In a story board-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end