Swift 3.0 Extensions and Utility

SwiftExtensions.swift

/**
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at
 
 http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
 */

import UIKit

/**
 Extension to make rounded rect view with provided corner radius
 Storyboard complaint for real time preview
 */
@IBDesignable
class RoundedRectView : UIView {
    
    override func awakeFromNib() {
        super.awakeFromNib()
    }
    
    @IBInspectable var cornerRadius:CGFloat = 0.0 {
        didSet {
            self.layer.cornerRadius = cornerRadius
        }
    }
}

/**
 Extension to make rounded view
 Usage: User profile picture view
 */
class RoundedView : UIView {
    
    override func awakeFromNib() {
        super.awakeFromNib()
        self.layer.cornerRadius = self.bounds.size.width/2.0
    }
}

/**
 UIColor extensions
 */
extension UIColor {
    
    /// Convenience initializer to create color with default alpha 1.0
    public convenience init(red: Int, green: Int, blue: Int) {
        self.init(red: CGFloat(red) / 255.0, green: CGFloat(green) / 255.0, blue: CGFloat(blue) / 255.0, alpha: 1.0)
    }
    
    /// Convenience initializer to create color from hex value
    public convenience init(netHex:Int) {
        self.init(red:(netHex >> 16) & 0xff, green:(netHex >> 8) & 0xff, blue:netHex & 0xff)
    }
}

/**
 FileManager extensions
 */
extension FileManager {
    
    /// Get documents directory path for the application to store/retrieve files
    static func getDocumentsDirectoryPath() -> URL {
        let filemanager = FileManager.default
        return filemanager.urls(for: .documentDirectory, in: .userDomainMask).first!
    }
}

/**
 UIViewController extension
 */
extension UIViewController {
    
    /// Get viewcontroller instance specifying the storyboard and controller identifier
    static func GetViewController(instoryboard storyboard:String, withController identifier:String) -> UIViewController {
        return UIStoryboard(name: storyboard, bundle: nil).instantiateViewController(withIdentifier: identifier)
    }
}