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MenuButton.swift
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MenuButton.swift
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//
// MenuButton.swift
// UIScrollViewDemo
//
// Created by Simon Gladman on 06/10/2014.
// Copyright (c) 2014 Simon Gladman. All rights reserved.
//
import Foundation
import UIKit
class MenuButton: UIButton
{
var alertController = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)
let deleteAlertAction: UIAlertAction
let makeNumericAction: UIAlertAction
let makeOperatorAction: UIAlertAction
override init(frame: CGRect)
{
func changeNodeType(value : UIAlertAction!) -> Void
{
NodesPM.changeSelectedNodeType(NodeTypes(rawValue: value.title)!)
}
func deleteSelectedNode(value : UIAlertAction!) -> Void
{
NodesPM.deleteSelectedNode()
}
makeOperatorAction = UIAlertAction(title: NodeTypes.Operator.rawValue, style: UIAlertActionStyle.Default, handler: changeNodeType)
makeNumericAction = UIAlertAction(title: NodeTypes.Number.rawValue, style: UIAlertActionStyle.Default, handler: changeNodeType)
deleteAlertAction = UIAlertAction(title: "Delete Selected Node", style: UIAlertActionStyle.Default, handler: deleteSelectedNode)
deleteAlertAction.enabled = false
makeNumericAction.enabled = false
makeOperatorAction.enabled = false
alertController.addAction(deleteAlertAction)
alertController.addAction(makeNumericAction)
alertController.addAction(makeOperatorAction)
super.init(frame: frame)
}
required init(coder aDecoder: NSCoder)
{
fatalError("init(coder:) has not been implemented")
}
override func didMoveToSuperview()
{
setTitle("Menu", forState: UIControlState.Normal)
tintColor = UIColor.blueColor()
layer.borderWidth = 1
layer.cornerRadius = 5
layer.backgroundColor = UIColor.blueColor().CGColor
layer.borderColor = UIColor.whiteColor().CGColor
NodesPM.addObserver(self, selector: "selectedNodeChanged:", notificationType: NodeNotificationTypes.NodeSelected)
NodesPM.addObserver(self, selector: "selectedNodeChanged:", notificationType: NodeNotificationTypes.NodeUpdated)
}
func selectedNodeChanged(value: AnyObject)
{
if let selectedNode = NodesPM.selectedNode
{
deleteAlertAction.enabled = true
makeNumericAction.enabled = selectedNode.nodeType == NodeTypes.Operator
makeOperatorAction.enabled = selectedNode.nodeType == NodeTypes.Number
}
else
{
deleteAlertAction.enabled = false
makeNumericAction.enabled = false
makeOperatorAction.enabled = false
}
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent)
{
if let viewController = UIApplication.sharedApplication().keyWindow!.rootViewController
{
if let popoverPresentationController = alertController.popoverPresentationController
{
popoverPresentationController.sourceRect = frame
popoverPresentationController.sourceView = viewController.view
viewController.presentViewController(alertController, animated: true, completion: nil)
}
}
}
}