ControlsViewController.m

/UICatalog/ViewControllers/ControlsViewController.m

https://gitlab.com/praveenvelanati/ios-demo
Objective C | 414 lines | 262 code | 84 blank | 68 comment | 24 complexity | 4fa14478008d88d6fe2fa9d649dad718 MD5 | raw file

/*
     File: ControlsViewController.m 
 Abstract: The view controller for hosting the UIControls features of this sample. 
  Version: 2.11 
  
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 Neither the name, trademarks, service marks or logos of Apple Inc. may 
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 without specific prior written permission from Apple.  Except as 
 expressly stated in this notice, no other rights or licenses, express or 
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 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 
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 */

#import "ControlsViewController.h"
#import "Constants.h"

#define kSliderHeight			7.0
#define kProgressIndicatorSize	40.0

#define kUIProgressBarWidth		160.0
#define kUIProgressBarHeight	24.0

#define kViewTag				1		// for tagging our embedded controls for removal at cell recycle time

static NSString *kSectionTitleKey = @"sectionTitleKey";
static NSString *kLabelKey = @"labelKey";
static NSString *kSourceKey = @"sourceKey";
static NSString *kViewKey = @"viewKey";

// tableView cell id constants
static NSString *kDisplayCellID = @"DisplayCellID";
static NSString *kSourceCellID = @"SourceCellID";


#pragma mark -

@interface ControlsViewController ()

@property (nonatomic, strong) UISwitch *switchCtl;
@property (nonatomic, strong) UISlider *sliderCtl;
@property (nonatomic, strong) UISlider *customSlider;
@property (nonatomic, strong) UIPageControl *pageControl;

@property (nonatomic, strong) UIActivityIndicatorView *progressInd;
@property (nonatomic, strong) UIColor *progressIndSavedColor;

@property (nonatomic, strong) UIProgressView *progressBar;
@property (nonatomic, strong) UIStepper *stepper;

@property (nonatomic, strong) NSArray *dataSourceArray;

@end


#pragma mark -

@implementation ControlsViewController

- (void)viewDidLoad
{	
    [super viewDidLoad];
    
	self.title = NSLocalizedString(@"ControlsTitle", @"");

	self.dataSourceArray = @[
                            @{  kSectionTitleKey:@"UISwitch",
                                kLabelKey:@"Standard Switch",
                                kSourceKey:@"ControlsViewController.m:\r-(UISwitch *)switchCtl",
                                kViewKey:self.switchCtl },
                            
                            @{  kSectionTitleKey:@"UISlider",
                                kLabelKey:@"Standard Slider",
                                kSourceKey:@"ControlsViewController.m:\r-(UISlider *)sliderCtl",
                                kViewKey:self.sliderCtl },
							
                            @{  kSectionTitleKey:@"UISlider",
                                kLabelKey:@"Customized Slider",
                                kSourceKey:@"ControlsViewController.m:\r-(UISlider *)customSlider",
                                kViewKey:self.customSlider },
							
							@{  kSectionTitleKey:@"UIPageControl",
                                kLabelKey:@"Ten Pages",
                                kSourceKey:@"ControlsViewController.m:\r-(UIPageControl *)pageControl",
                                kViewKey:self.pageControl },
							
							@{  kSectionTitleKey:@"UIActivityIndicatorView",
                                kLabelKey:@"Style Gray",
                                kSourceKey:@"ControlsViewController.m:\r-(UIActivityIndicatorView *)progressInd",
                                kViewKey:self.progressInd },
							
                            @{  kSectionTitleKey:@"UIProgressView",
                                kLabelKey:@"Style Default",
                                kSourceKey:@"ControlsViewController.m:\r-(UIProgressView *)progressBar",
                                kViewKey:self.progressBar },
                            
                            @{  kSectionTitleKey:@"UIStepper",
                                kLabelKey:@"Stepper 1 to 10",
                                kSourceKey:@"ControlsViewController.m:\r-(UIStepper *)stepper",
                                kViewKey:self.stepper }
							];
    
    // add tint bar button
    UIBarButtonItem *tintButton = [[UIBarButtonItem alloc] initWithTitle:@"Tinted"
                                                                   style:UIBarButtonItemStyleBordered
                                                                  target:self
                                                                  action:@selector(tintAction:)];
    self.navigationItem.rightBarButtonItem = tintButton;
    
    // register our cell IDs for later when we are asked for UITableViewCells
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:kDisplayCellID];
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:kSourceCellID];
}


#pragma mark - UITableViewDataSource

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
	return [self.dataSourceArray count];
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
	return [[self.dataSourceArray objectAtIndex: section] valueForKey:kSectionTitleKey];
}

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

// to determine specific row height for each cell, override this.
// In this example, each row is determined by its subviews that are embedded.
//
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
	return ([indexPath row] == 0) ? 50.0 : 38.0;
}

// to determine which UITableViewCell to be used on a given row.
//
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
	UITableViewCell *cell = nil;

	if ([indexPath row] == 0)
	{
		cell = [tableView dequeueReusableCellWithIdentifier:kDisplayCellID forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        UIView *viewToRemove = nil;
        viewToRemove = [cell.contentView viewWithTag:kViewTag];
        if (viewToRemove)
            [viewToRemove removeFromSuperview];
		
		cell.textLabel.text = [[self.dataSourceArray objectAtIndex:indexPath.section] valueForKey:kLabelKey];
		
		UIControl *control = [[self.dataSourceArray objectAtIndex:indexPath.section] valueForKey:kViewKey];
        
        // make sure this control is right-justified to the right side of the cell
        CGRect newFrame = control.frame;
        newFrame.origin.x = CGRectGetWidth(cell.contentView.frame) - CGRectGetWidth(newFrame) - 10.0;
        control.frame = newFrame;
        
        // if the cell is ever resized, keep the control over to the right
        control.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
        
		[cell.contentView addSubview:control];
        
        if (control == (UIControl *)self.progressInd)
        {
            [self.progressInd startAnimating];  // UIActivityIndicatorView needs to re-animate
        }
	}
	else
	{
		cell = [tableView dequeueReusableCellWithIdentifier:kSourceCellID forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
			
        cell.textLabel.opaque = NO;
        cell.textLabel.textAlignment = NSTextAlignmentCenter;
        cell.textLabel.textColor = [UIColor grayColor];
        cell.textLabel.numberOfLines = 2;
        cell.textLabel.highlightedTextColor = [UIColor blackColor];
        cell.textLabel.font = [UIFont systemFontOfSize:12.0];
		
		cell.textLabel.text = [[self.dataSourceArray objectAtIndex:indexPath.section] valueForKey:kSourceKey];
	}

	return cell;
}

- (void)switchAction:(id)sender
{
	// NSLog(@"switchAction: value = %d", [sender isOn]);
}

- (void)pageAction:(id)sender
{
	// NSLog(@"pageAction: current page = %d", [sender currentPage]);
}

- (void)sliderAction:(id)sender
{
    // UISlider *slider = (UISlider *)sender;
    // NSLog(@"sliderAction: value = %f", [slider value]);
}

- (void)stepperAction:(id)sender
{
    // UIStepper *actualStepper = (UIStepper *)sender;
    // NSLog(@"stepperAction: value = %f", [actualStepper value]);
}


#pragma mark - Lazy creation of controls

- (UISwitch *)switchCtl
{
    if (_switchCtl == nil)
    {
        CGRect frame = CGRectMake(0.0, 12.0, 94.0, 27.0);
        _switchCtl = [[UISwitch alloc] initWithFrame:frame];
        [_switchCtl addTarget:self action:@selector(switchAction:) forControlEvents:UIControlEventValueChanged];
        
        // in case the parent view draws with a custom color or gradient, use a transparent color
        _switchCtl.backgroundColor = [UIColor clearColor];
		
		[_switchCtl setAccessibilityLabel:NSLocalizedString(@"StandardSwitch", @"")];
		
		_switchCtl.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return _switchCtl;
}

- (UISlider *)sliderCtl
{
    if (_sliderCtl == nil)
    {
        CGRect frame = CGRectMake(0.0, 12.0, 120.0, kSliderHeight);
        _sliderCtl = [[UISlider alloc] initWithFrame:frame];
        [_sliderCtl addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
        
        // in case the parent view draws with a custom color or gradient, use a transparent color
        _sliderCtl.backgroundColor = [UIColor clearColor];
        
        _sliderCtl.minimumValue = 0.0;
        _sliderCtl.maximumValue = 100.0;
        _sliderCtl.continuous = YES;
        _sliderCtl.value = 50.0;

		// Add an accessibility label that describes the slider.
		[_sliderCtl setAccessibilityLabel:NSLocalizedString(@"StandardSlider", @"")];
		
		_sliderCtl.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return _sliderCtl;
}

- (UISlider *)customSlider
{
    if (_customSlider == nil)
    {
        CGRect frame = CGRectMake(0.0, 12.0, 120.0, kSliderHeight);
        _customSlider = [[UISlider alloc] initWithFrame:frame];
        [_customSlider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
        // in case the parent view draws with a custom color or gradient, use a transparent color
        _customSlider.backgroundColor = [UIColor clearColor];
        UIImage *stetchLeftTrack = [[UIImage imageNamed:@"orangeslide.png"]
									stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
        UIImage *stetchRightTrack = [[UIImage imageNamed:@"yellowslide.png"]
									 stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0];
        [_customSlider setThumbImage: [UIImage imageNamed:@"slider_ball.png"] forState:UIControlStateNormal];
        [_customSlider setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
        [_customSlider setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
        _customSlider.minimumValue = 0.0;
        _customSlider.maximumValue = 100.0;
        _customSlider.continuous = YES;
        _customSlider.value = 50.0;
		
		// Add an accessibility label that describes the slider.
		[_customSlider setAccessibilityLabel:NSLocalizedString(@"CustomSlider", @"")];
		
		_customSlider.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return _customSlider;
}

- (UIPageControl *)pageControl
{
    if (_pageControl == nil)
    {
        CGRect frame = CGRectMake(0.0, 14.0, 178.0, 20.0);
        _pageControl = [[UIPageControl alloc] initWithFrame:frame];
        [_pageControl addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventTouchUpInside];
		
        // in case the parent view draws with a custom color or gradient, use a transparent color
        _pageControl.backgroundColor = [UIColor grayColor];
        
        _pageControl.numberOfPages = 10;	// must be set or control won't draw
		
		_pageControl.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return _pageControl;
}

- (UIActivityIndicatorView *)progressInd
{
    if (_progressInd == nil)
    {
        CGRect frame = CGRectMake(0.0, 12.0, kProgressIndicatorSize, kProgressIndicatorSize);
        
        _progressInd = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
        self.progressIndSavedColor = _progressInd.color;
        _progressInd.frame = frame;
        [_progressInd sizeToFit];
        
        _progressInd.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
        
		_progressInd.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
        
        [_progressInd startAnimating];
    }
    return _progressInd;
}

- (UIProgressView *)progressBar
{
    if (_progressBar == nil)
    {
        CGRect frame = CGRectMake(0.0, 20.0, kUIProgressBarWidth, kUIProgressBarHeight);
        _progressBar = [[UIProgressView alloc] initWithFrame:frame];
        _progressBar.progressViewStyle = UIProgressViewStyleDefault;
        _progressBar.progress = 0.5;
		
		_progressBar.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return _progressBar;
}

- (UIStepper *)stepper
{
    if (_stepper == nil && [UIStepper class])
    {
        CGRect frame = CGRectMake(0.0, 10.0, 0.0, 0.0);
        _stepper = [[UIStepper alloc] initWithFrame:frame];
		[_stepper sizeToFit];        // size the control to it's normal size
        
		_stepper.tag = kViewTag;     // tag this view for later so we can remove it from recycled table cells
        _stepper.value = 0;
        _stepper.minimumValue = 0;
        _stepper.maximumValue = 10;
        _stepper.stepValue = 1;
        
        [_stepper addTarget:self action:@selector(stepperAction:) forControlEvents:UIControlEventValueChanged];
    }
    return _stepper;
}

- (void)tintAction:(id)sender
{
    UIColor *tintColor = (self.progressBar.progressTintColor != nil) ? nil : [UIColor blueColor];

    self.progressBar.progressTintColor = tintColor;
    self.progressBar.trackTintColor = tintColor;
    self.sliderCtl.minimumTrackTintColor = tintColor;
    self.sliderCtl.thumbTintColor = tintColor;
    self.switchCtl.onTintColor = tintColor;
    self.stepper.tintColor = tintColor;
    
    UIColor *thumbTintColor = (self.switchCtl.thumbTintColor != nil) ? nil : [UIColor redColor];
    self.switchCtl.onTintColor = tintColor;
    self.switchCtl.thumbTintColor = thumbTintColor;
    
    UIColor *progressIndColor = (self.progressInd.color != self.progressIndSavedColor) ? self.progressIndSavedColor : [UIColor blueColor];
    self.progressInd.color = progressIndColor;
}

@end