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MZFormSheetPresentationController
===========

`MZFormSheetPresentationController` provides an alternative to the native iOS UIModalPresentationFormSheet, adding support for iPhone and additional opportunities to setup controller size and feel form sheet.

`MZFormSheetPresentationController` also has a number of predefined transitions so you can customize whether the modal form slides in, fades in, bounces in or you can create your own custom transition.  There are also a number of properties for customizing the exact look and position of the form. It support also pan gesture dismissing.

This project is continuation of [`MZFormSheetController`](https://github.com/m1entus/MZFormSheetController) which allow you to make form sheet when deployment target is set to >iOS5 but use some tricky UIWindow hacks.

Here are a couple of images showing `MZFormSheetPresentationController` in action:

[![](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/animation2.gif)](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/animation2.gif)
[![](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/animation1.gif)](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/animation1.gif)
[![](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/screen2.png)](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/screen2.png)
[![](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/screen1.png)](https://raw.github.com/m1entus/MZFormSheetPresentationController/master/Screens/screen1.png)

## 2.x Change Log:
* Fully tested and certified for iOS 9
* Support for tvOS
* Fixed issue with text size based on size class
* Fixed autolayout issues
* Added dissmisal pan gesture on each direction
* Rewritten `MZFormSheetPresentationController` to use `UIPresentationController`
* Support for adding shadow to content view
* Added frame configuration handler which allow you to change frame during rotation and animations
* Added `shouldCenterHorizontally` property
* Allowed make your custom animator to support native transitions
* Allow to make dynamic contentViewSize depents on displayed UIViewController

## Upgrade from 1.x

As a major version change, the API introduced in 2.0 is not backward compatible with 1.x integrations. Upgrading is straightforward.
* Use `MZFormSheetPresentationViewController` instead of `MZFormSheetPresentationController`

* `MZFormSheetPresentationController` now inherits from `UIPresentationController` and manage presentation of popup

* `MZFormSheetPresentationViewController` have property `presentationController` which allows you customization presented content view

* `MZFormSheetPresentationController registerTransitionClass` is now `MZTransition registerTransitionClass`

* `func entryFormSheetControllerTransition(formSheetController: MZFormSheetPresentationController, completionHandler: MZTransitionCompletionHandler)` changed to `func entryFormSheetControllerTransition(formSheetController: UIViewController, completionHandler: MZTransitionCompletionHandler)` which formSheetController frame is equal to contentViewSize with view origin.

## Requirements

MZFormSheetPresentationController requires either iOS 8.x and above.

## Installation
###[Carthage](https://github.com/Carthage/Carthage)

Add the following line to your `Cartfile`.

```github "m1entus/MZFormSheetPresentationController" "master"```

Then run `carthage update --no-use-binaries` or just `carthage update`. 

After building the framework you will need to add it to your project and import it using the Framework header:

```#import <MZFormSheetPresentationController/MZFormSheetPresentationControllerFramework.h>```

For further details on the installation and usage of Carthage, visit [it's project page](https://github.com/Carthage/Carthage).


###[CocoaPods](https://github.com/CocoaPods/CocoaPods)

Add the following line to your `Podfile`.

```
# Uncomment this line to define a global platform for your project
platform :ios, '8.0'
# Uncomment this line if you're using Swift
use_frameworks!

target 'ProjectName' do
    pod 'MZFormSheetPresentationController'
end
```

Then run `pod install --verbose` or just `pod install`. For details of the installation and usage of CocoaPods, visit [it's project page](https://github.com/CocoaPods/CocoaPods).

## How To Use

There are two example projects, one is for Objective-C second is for Swift.

Let's start with a simple example

Objective-C
``` objective-c
UINavigationController *navigationController = [self.storyboard instantiateViewControllerWithIdentifier:@"formSheetController"];
MZFormSheetPresentationViewController *formSheetController = [[MZFormSheetPresentationViewController alloc] initWithContentViewController:navigationController];
formSheetController.presentationController.contentViewSize = CGSizeMake(250, 250); // or pass in UILayoutFittingCompressedSize to size automatically with auto-layout

[self presentViewController:formSheetController animated:YES completion:nil];
```

Swift
```swift
let navigationController = self.storyboard!.instantiateViewControllerWithIdentifier("formSheetController") as! UINavigationController
let formSheetController = MZFormSheetPresentationViewController(contentViewController: navigationController)
formSheetController.presentationController?.contentViewSize = CGSizeMake(250, 250)  // or pass in UILayoutFittingCompressedSize to size automatically with auto-layout

self.presentViewController(formSheetController, animated: true, completion: nil)
```

This will display view controller inside form sheet container.

If you want to dismiss form sheet controller, use default dismissing view controller action.

Objective-C
```objective-c
[self dismissViewControllerAnimated:YES completion:nil];
```

Swift
```swift
self.dismissViewControllerAnimated(true, completion: nil)
```

Easy right ?!

## Passing data
If you want to pass data to presenting view controller, you are doing it like normal. Just remember that IBOutlets are initialized after viewDidLoad, if you don't want to create additional properies, you can always use completion handler `willPresentContentViewControllerHandler` to pass data directly to outlets. It is called after viewWillAppear and before `MZFormSheetPresentationViewController` animation.

Objective-C
```objective-c
MZFormSheetPresentationViewController *formSheetController = [[MZFormSheetPresentationViewController alloc] initWithContentViewController:navigationController];

PresentedTableViewController *presentedViewController = [navigationController.viewControllers firstObject];
presentedViewController.textFieldBecomeFirstResponder = YES;
presentedViewController.passingString = @"PASSSED DATA!!";

formSheetController.willPresentContentViewControllerHandler = ^(UIViewController *vc) {
    UINavigationController *navigationController = (id)vc;
    PresentedTableViewController *presentedViewController = [navigationController.viewControllers firstObject];
    [presentedViewController.view layoutIfNeeded];
    presentedViewController.textField.text = @"PASS DATA DIRECTLY TO OUTLET!!";
};

[self presentViewController:formSheetController animated:YES completion:nil];
```

Swift
```swift
let formSheetController = MZFormSheetPresentationViewController(contentViewController: navigationController)

let presentedViewController = navigationController.viewControllers.first as! PresentedTableViewController
presentedViewController.textFieldBecomeFirstResponder = true
presentedViewController.passingString = "PASSED DATA"

formSheetController.willPresentContentViewControllerHandler = { vc in
    let navigationController = vc as! UINavigationController
    let presentedViewController = navigationController.viewControllers.first as! PresentedTableViewController
    presentedViewController.view?.layoutIfNeeded()
    presentedViewController.textField?.text = "PASS DATA DIRECTLY TO OUTLET!!"
}

self.presentViewController(formSheetController, animated: true, completion: nil)
```

## Using pan gesture to dismiss

```objective-c
typedef NS_OPTIONS(NSUInteger, MZFormSheetPanGestureDismissDirection) {
    MZFormSheetPanGestureDismissDirectionNone = 0,
    MZFormSheetPanGestureDismissDirectionUp = 1 << 0,
    MZFormSheetPanGestureDismissDirectionDown = 1 << 1,
    MZFormSheetPanGestureDismissDirectionLeft = 1 << 2,
    MZFormSheetPanGestureDismissDirectionRight = 1 << 3,
    MZFormSheetPanGestureDismissDirectionAll = MZFormSheetPanGestureDismissDirectionUp | MZFormSheetPanGestureDismissDirectionDown | MZFormSheetPanGestureDismissDirectionLeft | MZFormSheetPanGestureDismissDirectionRight
};
```
```objective-c
UINavigationController *navigationController = [self formSheetControllerWithNavigationController];
MZFormSheetPresentationViewController *formSheetController = [[MZFormSheetPresentationViewController alloc] initWithContentViewController:navigationController];

formSheetController.interactivePanGestureDissmisalDirection = MZFormSheetPanGestureDismissDirectionAll;

[self presentViewController:formSheetController animated:YES completion:nil];

```

## Blur background effect

It is possible to display blurry background, you can set `MZFormSheetPresentationController` default appearance or directly to `MZFormSheetPresentationController`

Objective-C
```objective-c
// Blur will be applied to all MZFormSheetPresentationControllers by default
[[MZFormSheetPresentationController appearance] setShouldApplyBackgroundBlurEffect:YES];

or

// This will set to only one instance
formSheetController.shouldApplyBackgroundBlurEffect = YES;
```

Swift
```swift
// Blur will be applied to all MZFormSheetPresentationControllers by default
MZFormSheetPresentationController.appearance().shouldApplyBackgroundBlurEffect = true

or

// This will set to only one instance
formSheetController.shouldApplyBackgroundBlurEffect = true
```

## Transitions

MZFormSheetPresentationViewController has predefined couple transitions.

Objective-C
``` objective-c
typedef NS_ENUM(NSInteger, MZFormSheetPresentationTransitionStyle) {
 MZFormSheetPresentationTransitionStyleSlideFromTop = 0,
 MZFormSheetPresentationTransitionStyleSlideFromBottom,
 MZFormSheetPresentationTransitionStyleSlideFromLeft,
 MZFormSheetPresentationTransitionStyleSlideFromRight,
 MZFormSheetPresentationTransitionStyleSlideAndBounceFromTop,
 MZFormSheetPresentationTransitionStyleSlideAndBounceFromBottom,
 MZFormSheetPresentationTransitionStyleSlideAndBounceFromLeft,
 MZFormSheetPresentationTransitionStyleSlideAndBounceFromRight,
 MZFormSheetPresentationTransitionStyleFade,
 MZFormSheetPresentationTransitionStyleBounce,
 MZFormSheetPresentationTransitionStyleDropDown,
 MZFormSheetPresentationTransitionStyleCustom,
 MZFormSheetPresentationTransitionStyleNone,
};
```

If you want to use them you will have to just assign `contentViewControllerTransitionStyle` property

Objective-C
``` objective-c
formSheetController.contentViewControllerTransitionStyle = MZFormSheetPresentationTransitionStyleFade;
```

You can also create your own transition by implementing `MZFormSheetPresentationViewControllerTransitionProtocol` protocol and register your transition class as a custom style.

Objective-C
``` objective-c
@interface CustomTransition : NSObject <MZFormSheetPresentationViewControllerTransitionProtocol>
@end

[MZTransition registerTransitionClass:[CustomTransition class] forTransitionStyle:MZFormSheetTransitionStyleCustom];

formSheetController.contentViewControllerTransitionStyle = MZFormSheetTransitionStyleCustom;
```

Swift
```swift
class CustomTransition: NSObject, MZFormSheetPresentationViewControllerTransitionProtocol {
}

MZTransition.registerTransitionClass(CustomTransition.self, forTransitionStyle: .Custom)

formSheetController.contentViewControllerTransitionStyle = .Custom
```

if you are creating own transition you have to call completionBlock at the end of animation.

Objective-C
```objective-c
- (void)exitFormSheetControllerTransition:(nonnull UIViewController *)presentingViewController
                        completionHandler:(nonnull MZTransitionCompletionHandler)completionHandler {
    CGRect formSheetRect = presentingViewController.view.frame;
    formSheetRect.origin.x = [UIScreen mainScreen].bounds.size.width;

    [UIView animateWithDuration:0.3
                          delay:0
                        options:UIViewAnimationOptionCurveEaseIn
                     animations:^{
                         presentingViewController.view.frame = formSheetRect;
                     }
                     completion:^(BOOL finished) {
                         completionHandler();
                     }];
}
```

Swift
```swift
func exitFormSheetControllerTransition(presentingViewController: UIViewController, completionHandler: MZTransitionCompletionHandler) {
    var formSheetRect = presentingViewController.view.frame
    formSheetRect.origin.x = UIScreen.mainScreen().bounds.size.width

    UIView.animateWithDuration(0.3, delay: 0.0, options: UIViewAnimationOptions.CurveEaseIn, animations: {
        presentingViewController.view.frame = formSheetRect
    }, completion: {(value: Bool)  -> Void in
        completionHandler()
    })
}
```

## Transparent Touch Background

If you want to have access to the controller that is below MZFormSheetPresentationController, you can set property `transparentTouchEnabled` and background view controller will get all touches.

Objective-C
```objective-c
MZFormSheetPresentationViewController *formSheetController = [[MZFormSheetPresentationViewController alloc] initWithContentViewController:viewController];
formSheetController.presentationController.transparentTouchEnabled = YES;
```

Swift
```swift
let formSheetController = MZFormSheetPresentationViewController(contentViewController: viewController)
formSheetController.presentationController?.transparentTouchEnabled = true
```

## Completion Blocks

``` objective-c
/**
 The handler to call when presented form sheet is before entry transition and its view will show on window.
 */
@property (nonatomic, copy, nullable) MZFormSheetPresentationViewControllerCompletionHandler willPresentContentViewControllerHandler;

/**
 The handler to call when presented form sheet is after entry transition animation.
 */
@property (nonatomic, copy, nullable) MZFormSheetPresentationViewControllerCompletionHandler didPresentContentViewControllerHandler;

/**
 The handler to call when presented form sheet will be dismiss, this is called before out transition animation.
 */
@property (nonatomic, copy, nullable) MZFormSheetPresentationViewControllerCompletionHandler willDismissContentViewControllerHandler;

/**
 The handler to call when presented form sheet is after dismiss.
 */
@property (nonatomic, copy, nullable) MZFormSheetPresentationViewControllerCompletionHandler didDismissContentViewControllerHandler;
```

## Autolayout

MZFormSheetPresentationController supports autolayout.

## Storyboard

MZFormSheetPresentationController supports storyboard.

MZFormSheetPresentationViewControllerSegue is a custom storyboard segue which use default MZFormSheetPresentationController settings.

If you want to get acces to form sheet controller and pass data using storyboard segue, the code will look like this:

Objective-C
```objective-c
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqualToString:@"segue"]) {
        MZFormSheetPresentationControllerSegue *presentationSegue = (id)segue;
        presentationSegue.formSheetPresentationController.presentationController.shouldApplyBackgroundBlurEffect = YES;
        UINavigationController *navigationController = (id)presentationSegue.formSheetPresentationController.contentViewController;
        PresentedTableViewController *presentedViewController = [navigationController.viewControllers firstObject];
        presentedViewController.textFieldBecomeFirstResponder = YES;
        presentedViewController.passingString = @"PASSSED DATA!!";
    }
}
```

Swift
```swift
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if let identifier = segue.identifier {
        if identifier == "segue" {
            let presentationSegue = segue as! MZFormSheetPresentationViewControllerSegue
            presentationSegue.formSheetPresentationController.presentationController?.shouldApplyBackgroundBlurEffect = true
            let navigationController = presentationSegue.formSheetPresentationController.contentViewController as! UINavigationController
            let presentedViewController = navigationController.viewControllers.first as! PresentedTableViewController
            presentedViewController.textFieldBecomeFirstResponder = true
            presentedViewController.passingString = "PASSED DATA"
        }
    }
}
```

## ARC

MZFormSheetPresentationController uses ARC.

## App Extensions

Some position calculations access [UIApplication sharedApplication] which is not permitted in application extensions. If you want to use MZFormSheetPresentationController in extensions add the MZ_APP_EXTENSIONS=1 preprocessor macro in the corresponding target.

If you use Cocoapods you can use a post install hook to do that:
```ruby
post_install do |installer|
    installer.pods_project.targets.each do |target|
        if target.name == "MZFormSheetPresentationController"
            target.build_configurations.each do |config|
                config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)']
                config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] << 'MZ_APP_EXTENSIONS=1'
            end
        end
    end
end
```

## Contact

[Michal Zaborowski](http://github.com/m1entus)

[Twitter](https://twitter.com/iMientus)