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/*
File: ToolbarViewController.m
Abstract: The view controller for hosting the UIToolbar and UIBarButtonItem features of this sample.
Version: 2.10
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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*/
#import "ToolbarViewController.h"
#import "AppDelegate.h"
#import "Constants.h"
@implementation ToolbarViewController
@synthesize barStyleSegControl, tintSwitch, imageSwitch, imageSwitchLabel;
@synthesize buttonItemStyleSegControl, systemButtonPicker;
@synthesize toolbar, pickerViewArray, currentSystemItem;
- (void)dealloc
{
[toolbar release];
[pickerViewArray release];
[barStyleSegControl release];
[tintSwitch release];
[buttonItemStyleSegControl release];
[systemButtonPicker release];
[imageSwitch release];
[imageSwitchLabel release];
[super dealloc];
}
// return the picker frame based on its size, positioned at the bottom of the page
- (CGRect)pickerFrameWithSize:(CGSize)size
{
CGRect screenRect = [[UIScreen mainScreen] applicationFrame];
CGRect pickerRect = CGRectMake( 0.0,
screenRect.size.height - 84.0 - size.height,
size.width,
size.height);
return pickerRect;
}
- (void)action:(id)sender
{
//NSLog(@"UIBarButtonItem clicked");
}
- (void)createToolbarItems
{
// match each of the toolbar item's style match the selection in the "UIBarButtonItemStyle" segmented control
UIBarButtonItemStyle style = [self.buttonItemStyleSegControl selectedSegmentIndex];
// create the system-defined "OK or Done" button
UIBarButtonItem *systemItem = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:currentSystemItem
target:self action:@selector(action:)];
systemItem.style = style;
// flex item used to separate the left groups items and right grouped items
UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];
// create a special tab bar item with a custom image and title
UIBarButtonItem *infoItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"segment_tools.png"]
style:style
target:self
action:@selector(action:)];
// Set the accessibility label for an image bar item.
[infoItem setAccessibilityLabel:NSLocalizedString(@"ToolsIcon", @"")];
// create a bordered style button with custom title
UIBarButtonItem *customItem = [[UIBarButtonItem alloc] initWithTitle:@"Item"
style:style // note you can use "UIBarButtonItemStyleDone" to make it blue
target:self
action:@selector(action:)];
NSArray *items = [NSArray arrayWithObjects: systemItem, flexItem, customItem, infoItem, nil];
[self.toolbar setItems:items animated:NO];
[systemItem release];
[flexItem release];
[infoItem release];
[customItem 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 and set to nil
self.pickerViewArray = nil;
self.toolbar = nil;
self.imageSwitch = nil;
self.imageSwitchLabel = nil;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// this list appears in the UIPickerView to pick the system's UIBarButtonItem
self.pickerViewArray = [NSArray arrayWithObjects:
@"Done",
@"Cancel",
@"Edit",
@"Save",
@"Add",
@"FlexibleSpace",
@"FixedSpace",
@"Compose",
@"Reply",
@"Action",
@"Organize",
@"Bookmarks",
@"Search",
@"Refresh",
@"Stop",
@"Camera",
@"Trash",
@"Play",
@"Pause",
@"Rewind",
@"FastForward",
// new in 3.0 SDK:
@"Undo",
@"Redo",
// new in 4.0 SDK:
@"PageCurl",
nil];
self.title = NSLocalizedString(@"ToolbarTitle", @"");
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor]; // use the table view background color
// create the UIToolbar at the bottom of the view controller
//
toolbar = [UIToolbar new];
toolbar.barStyle = UIBarStyleDefault;
// size up the toolbar and set its frame
[toolbar sizeToFit];
CGFloat toolbarHeight = [toolbar frame].size.height;
CGRect mainViewBounds = self.view.bounds;
[toolbar setFrame:CGRectMake(CGRectGetMinX(mainViewBounds),
CGRectGetMinY(mainViewBounds) + CGRectGetHeight(mainViewBounds) - (toolbarHeight * 2.0) + 2.0,
CGRectGetWidth(mainViewBounds),
toolbarHeight)];
[self.view addSubview:toolbar];
currentSystemItem = UIBarButtonSystemItemDone;
[self createToolbarItems];
// Set the accessibility label for the tint and image switches so that its context can be determined
[self.tintSwitch setAccessibilityLabel:NSLocalizedString(@"TintSwitch", @"")];
[self.imageSwitch setAccessibilityLabel:NSLocalizedString(@"ImageSwitch", @"")];
// provide tint coloring and background image only if its available
if (![self.toolbar respondsToSelector:@selector(backgroundImageForToolbarPosition:barMetrics:)])
{
self.imageSwitch.hidden = YES;
self.imageSwitchLabel.hidden = YES;
}
}
- (IBAction)toggleStyle:(id)sender
{
UIBarButtonItemStyle style = UIBarButtonItemStylePlain;
switch ([sender selectedSegmentIndex])
{
case 0: // UIBarButtonItemStylePlain
{
style = UIBarButtonItemStylePlain;
break;
}
case 1: // UIBarButtonItemStyleBordered
{
style = UIBarButtonItemStyleBordered;
break;
}
case 2: // UIBarButtonItemStyleDone
{
style = UIBarButtonItemStyleDone;
break;
}
}
NSArray *toolbarItems = toolbar.items;
UIBarButtonItem *item;
for (item in toolbarItems)
{
item.style = style;
}
}
- (IBAction)toggleBarStyle:(id)sender
{
switch ([sender selectedSegmentIndex])
{
case 0:
toolbar.barStyle = UIBarStyleDefault;
break;
case 1:
toolbar.barStyle = UIBarStyleBlackOpaque;
break;
case 2:
toolbar.barStyle = UIBarStyleBlackTranslucent;
break;
}
}
- (IBAction)toggleTintColor:(id)sender
{
UISwitch *switchCtl = (UISwitch *)sender;
if (switchCtl.on)
{
toolbar.tintColor = [UIColor redColor];
imageSwitch.enabled = barStyleSegControl.enabled = NO;
imageSwitch.alpha = barStyleSegControl.alpha = 0.50;
}
else
{
toolbar.tintColor = nil; // no color
imageSwitch.enabled = barStyleSegControl.enabled = YES;
imageSwitch.alpha = barStyleSegControl.alpha = 1.0;
}
}
- (IBAction)toggleImage:(id)sender
{
UISwitch *switchCtl = (UISwitch *)sender;
if (switchCtl.on)
{
[self.toolbar setBackgroundImage:[UIImage imageNamed:@"toolbarBackground"]
forToolbarPosition:UIToolbarPositionBottom
barMetrics:UIBarMetricsDefault];
tintSwitch.enabled = barStyleSegControl.enabled = NO;
tintSwitch.alpha = barStyleSegControl.alpha = 0.50;
}
else
{
[self.toolbar setBackgroundImage:nil
forToolbarPosition:UIToolbarPositionBottom
barMetrics:UIBarMetricsDefault];
tintSwitch.enabled = barStyleSegControl.enabled = YES;
tintSwitch.alpha = barStyleSegControl.alpha = 1.0;
}
}
#pragma mark -
#pragma mark UIPickerViewDelegate
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
// change the left most bar item to what's in the picker
currentSystemItem = [pickerView selectedRowInComponent:0];
[self createToolbarItems]; // this will re-create all the items
}
#pragma mark -
#pragma mark UIPickerViewDataSource
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [pickerViewArray objectAtIndex:row];
}
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component
{
return 240.0;
}
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
return 40.0;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [pickerViewArray count];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
@end
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