/*
     File: ControlsViewController.m 
 Abstract: The view controller for hosting the UIControls features of this sample. 
  Version: 2.10 
  
 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) 2011 Apple Inc. All Rights Reserved. 
  
 */

#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";

#pragma mark -

@interface ControlsViewController (forwardDeclarations)
- (void)tintAction:(id)sender;
@end

@implementation ControlsViewController

@synthesize dataSourceArray, switchCtl, sliderCtl, customSlider, pageControl, progressInd, progressBar, stepper, progressIndSavedColor;

- (void)dealloc
{	
	[switchCtl release];
	[sliderCtl release];
	[customSlider release];
	[pageControl release];
	[progressInd release];
    [progressIndSavedColor release];
	[progressBar release];
	[stepper release];
	[dataSourceArray release];

	[super dealloc];
}

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

	self.dataSourceArray = [NSMutableArray arrayWithObjects:
							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UISwitch", kSectionTitleKey,
								 @"Standard Switch", kLabelKey,
								 @"ControlsViewController.m:\r-(UISwitch *)switchCtl", kSourceKey,
								 self.switchCtl, kViewKey,
							 nil],

							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UISlider", kSectionTitleKey,
								 @"Standard Slider", kLabelKey,
								 @"ControlsViewController.m:\r-(UISlider *)sliderCtl", kSourceKey,
								 self.sliderCtl, kViewKey,
							 nil],
							
							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UISlider", kSectionTitleKey,
								 @"Customized Slider", kLabelKey,
								 @"ControlsViewController.m:\r-(UISlider *)customSlider", kSourceKey,
								 self.customSlider, kViewKey,
							 nil],
							
							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UIPageControl", kSectionTitleKey,
								 @"Ten Pages", kLabelKey,
								 @"ControlsViewController.m:\r-(UIPageControl *)pageControl", kSourceKey,
								 self.pageControl, kViewKey,
							 nil],
							
							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UIActivityIndicatorView", kSectionTitleKey,
								 @"Style Gray", kLabelKey,
								 @"ControlsViewController.m:\r-(UIActivityIndicatorView *)progressInd", kSourceKey,
								 self.progressInd, kViewKey,
							 nil],
							
							[NSDictionary dictionaryWithObjectsAndKeys:
								 @"UIProgressView", kSectionTitleKey,
								 @"Style Default", kLabelKey,
								 @"ControlsViewController.m:\r-(UIProgressView *)progressBar", kSourceKey,
								 self.progressBar, kViewKey,
							 nil],
                            
							nil];
    
    // add a UIStepper class section (if available)
    if ([UIStepper class])
    {
        [self.dataSourceArray addObject:[NSDictionary dictionaryWithObjectsAndKeys:
                                 @"UIStepper", kSectionTitleKey,
                                 @"Stepper 1 to 10", kLabelKey,
                                 @"ControlsViewController.m:\r-(UIStepper *)stepper", kSourceKey,
                                 self.stepper, kViewKey,
                              nil]];
    }
    
    // provide tint coloring only if its available
    if ([sliderCtl respondsToSelector:@selector(minimumTrackTintColor)])
    {
        // add tint bar button
        UIBarButtonItem *tintButton = [[UIBarButtonItem alloc] initWithTitle:@"Tinted"
                                                                       style:UIBarButtonItemStyleBordered
                                                                      target:self
                                                                      action:@selector(tintAction:)];
        self.navigationItem.rightBarButtonItem = tintButton;
        [tintButton release];
    }
}

// called after the view controller's view is released and set to nil.
// For example, a memory warning which causes the view to be purged. Not invoked as a result of -dealloc.
// So release any properties that are loaded in viewDidLoad or can be recreated lazily.
//
- (void)viewDidUnload 
{
    [super viewDidUnload];
	
	// release the controls and set them nil in case they were ever created
	// note: we can't use "self.xxx = nil" since they are read only properties
	//
	[switchCtl release];
    switchCtl = nil;
    [sliderCtl release];
    sliderCtl = nil;
    [customSlider release];
    customSlider = nil;
    [pageControl release];
    pageControl = nil;
    [progressInd release];
    progressInd = nil;
    [progressBar release];
    progressBar = nil;
	[stepper release];
    stepper = nil;
    
	self.dataSourceArray = nil;	// this will release and set to nil
}


#pragma mark -
#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)
	{
		static NSString *kDisplayCell_ID = @"DisplayCellID";
		cell = [self.tableView dequeueReusableCellWithIdentifier:kDisplayCell_ID];
        if (cell == nil)
        {
			cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kDisplayCell_ID] autorelease];
			cell.selectionStyle = UITableViewCellSelectionStyleNone;
		}
		else
		{
			// the cell is being recycled, remove old embedded controls
			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];
		[cell.contentView addSubview:control];
	}
	else
	{
		static NSString *kSourceCellID = @"SourceCellID";
		cell = [self.tableView dequeueReusableCellWithIdentifier:kSourceCellID];
        if (cell == nil)
        {
			cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kSourceCellID] autorelease];
			cell.selectionStyle = UITableViewCellSelectionStyleNone;
			
			cell.textLabel.opaque = NO;
            cell.textLabel.textAlignment = UITextAlignmentCenter;
            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 -
#pragma mark Lazy creation of controls

- (UISwitch *)switchCtl
{
    if (switchCtl == nil) 
    {
        CGRect frame = CGRectMake(198.0, 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(174.0, 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(174, 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(120.0, 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(265.0, 12.0, kProgressIndicatorSize, kProgressIndicatorSize);
        
        progressInd = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
        self.progressIndSavedColor = progressInd.color;
        progressInd.frame = frame;
        [progressInd startAnimating];
        progressInd.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
        [progressInd sizeToFit];
		
		progressInd.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
    }
    return progressInd;
}

- (UIProgressView *)progressBar
{
    if (progressBar == nil) 
    {
        CGRect frame = CGRectMake(126.0, 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(200.0, 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 = (progressBar.progressTintColor != nil) ? nil : [UIColor blueColor];
                        
    progressBar.progressTintColor = tintColor;
    progressBar.trackTintColor = tintColor;
    sliderCtl.minimumTrackTintColor = tintColor;
    sliderCtl.thumbTintColor = tintColor;
    switchCtl.onTintColor = tintColor;
    
    UIColor *progressIndColor = (progressInd.color != progressIndSavedColor) ? self.progressIndSavedColor : [UIColor blueColor];
    progressInd.color = progressIndColor;
}

@end

