@IBOutlet weak var myCameraButton: CameraButton!

@IBAction func myCameraAction(sender: AnyObject) {

    myCameraButton.openCameraOptionMenu()
}

let cameraButton: CameraButton = CameraButton(frame: CGRectMake(100, 400, 100, 50))

cameraButton.setTitle("Click Me", forState: UIControlState.Normal)


cameraButton.addTarget(self, action: "myCameraAction:", forControlEvents: UIControlEvents.TouchUpInside) //Attach a action to the button 

self.view.addSubview(cameraButton) // add to view as subview


//create the action
@IBAction func myCameraAction(sender: AnyObject) {

    myCameraButton.openCameraOptionMenu()
}

func setupCameraButton() {

    // required
    myCameraButton.targetViewController = self


    //optional
    myCameraButton.targetImageView = self.myImageView // self.myImageView is the UIImageView to put the selected image

    myCameraButton.optinMenuHeaderTitle = "Camera Options"

}

class ViewController: UIViewController, CameraButtonDelegate {

    ...

}

func setupCameraButton() {

    // required
    myCameraButton.targetViewController = self


    //optional
    myCameraButton.delegate = self

}

func changeMenuOptionsForCamera() {

    //only camera option will be shown
    //default optios are .Camera, .PhotoLibrary, .PhotoAlbum, .DeleteExistingImage

    //.DeleteExistingImage image will only work when the targetImageView controller contains image
    // or cameraButton.imageViewHasImage = true
    // if this flag is true, the existing image from the targetImageView would be removed, even though it has not been
    // picked using the camera button image picker

    myCameraButton.optionMenuList = [ .Camera]


}

/* the selected image can be manipulated even if the target image view is not specified */

func imagePickerDismissed(imagePicked : Bool, withImage : UIImage?) {

    if (imagePicked == true && withImage != nil) {

        self.myImageView.image = withImage!

    }
}

func targetImageDeleted() {

    //whatever action needs to be taken after the image has been deletated
    //e.g.
    self.myImageView.image = nil
}

if let selectedImage : UIImage = self.myCameraButton.getSelectedImage() {

//do something with the selected image

}


if let selectedImageData : NSData = self.myCameraButton.getSelectedImageAsData(type: .PNG) {

//do something with the selected selectedImageData

}

if let selectedImageDataAsString : String = self.myCameraButton.getImageAsBase64EncodedString(type: .PNG) {

//do something with the selected selectedImageDataAsString

}

//a custom imagepicker which has to be a subclass of UIImagePickerController can be used if necessary
public lazy var imagePicker : UIImagePickerController = UIImagePickerController()

//a required option, generally this is the view controller where the Camera Button is placed
public weak var targetViewController : UIViewController?


//if not provided, a dummy one would be created
public weak var targetImageView : UIImageView?



//a image name that could be placed in targetImageView after the image has been deleted
public var placeHolderImageName : String = ""


//if true, indicates the targetImageView contains a image, and the delete option is shown if not otherwise disabled
public var imageViewHasImage : Bool = false


/**settings for different camera action, 
*
* can be disabled by setting show = false
* e.g.
* self.cameraButton.cameraMenuSettings.show = false, the camera option will not be shown in menu
* if not available a message can be shown
* no message would be shown if notAvailableMessage is kept empty
*
*/
public var cameraMenuSettings : MenuSettings = MenuSettings(type : .Camera, name: "Camera", show: true, allowsEditing : false, presentWithAnimation : true, dismissWithAnimation : true, notAvailableMessage : "Unable to find camera in this device")


//settings for photo library action
public var photoLibraryMenuSettings : MenuSettings = MenuSettings(type : .PhotoLibrary, name: "Photo Library", show: true, allowsEditing : false, presentWithAnimation : true, dismissWithAnimation : true, notAvailableMessage : "Unable to find photo library in this device")


//settings for photo album action
public var photoAlbumMenuSettings : MenuSettings = MenuSettings(type : .PhotoAlbum, name: "Photo Album", show: true, allowsEditing : false, presentWithAnimation : true, dismissWithAnimation : true, notAvailableMessage : "Unable to find photo album in this device")


//the allowsEditing, prsentWithAnimation and dismissWithAnimation, notAvailableMessage does not really effect this menu

public var deleteMenuSettings : MenuSettings = MenuSettings(type : .DeleteExistingImage, name: "Delete", show: true, allowsEditing : false, presentWithAnimation : true, dismissWithAnimation : true, notAvailableMessage : "")



//The header of the menu
public var optinMenuHeaderTitle : String = ""


//this option should be used to change the order of availabel options, can also be used to not show an option
public var optionMenuList : Array<MenuOptonTypes> = [

    .Camera, .PhotoLibrary, .PhotoAlbum, .DeleteExistingImage
]


//user can choose to show the option menu popover from other places

public weak var showOptionMenuFromView : UIView?


//user can choose to show the option menu popover from bar button item

public weak var showOptionFromBarButtonItem : UIBarButtonItem?