113 lines
3.7 KiB
Swift
113 lines
3.7 KiB
Swift
//
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// CalculatorViewController.swift
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// RxExample
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//
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// Created by Carlos García on 4/8/15.
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// Copyright © 2015 Krunoslav Zaher. All rights reserved.
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//
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import UIKit
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#if !RX_NO_MODULE
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import RxSwift
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import RxCocoa
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#endif
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class CalculatorViewController: ViewController {
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@IBOutlet weak var lastSignLabel: UILabel!
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@IBOutlet weak var resultLabel: UILabel!
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@IBOutlet weak var allClearButton: UIButton!
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@IBOutlet weak var changeSignButton: UIButton!
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@IBOutlet weak var percentButton: UIButton!
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@IBOutlet weak var divideButton: UIButton!
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@IBOutlet weak var multiplyButton: UIButton!
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@IBOutlet weak var minusButton: UIButton!
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@IBOutlet weak var plusButton: UIButton!
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@IBOutlet weak var equalButton: UIButton!
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@IBOutlet weak var dotButton: UIButton!
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@IBOutlet weak var zeroButton: UIButton!
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@IBOutlet weak var oneButton: UIButton!
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@IBOutlet weak var twoButton: UIButton!
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@IBOutlet weak var threeButton: UIButton!
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@IBOutlet weak var fourButton: UIButton!
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@IBOutlet weak var fiveButton: UIButton!
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@IBOutlet weak var sixButton: UIButton!
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@IBOutlet weak var sevenButton: UIButton!
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@IBOutlet weak var eightButton: UIButton!
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@IBOutlet weak var nineButton: UIButton!
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override func viewDidLoad() {
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let commands:[Observable<Action>] = [
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allClearButton.rx_tap.map { _ in .Clear },
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changeSignButton.rx_tap.map { _ in .ChangeSign },
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percentButton.rx_tap.map { _ in .Percent },
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divideButton.rx_tap.map { _ in .Operation(.Division) },
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multiplyButton.rx_tap.map { _ in .Operation(.Multiplication) },
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minusButton.rx_tap.map { _ in .Operation(.Subtraction) },
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plusButton.rx_tap.map { _ in .Operation(.Addition) },
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equalButton.rx_tap.map { _ in .Equal },
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dotButton.rx_tap.map { _ in .AddDot },
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zeroButton.rx_tap.map { _ in .AddNumber("0") },
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oneButton.rx_tap.map { _ in .AddNumber("1") },
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twoButton.rx_tap.map { _ in .AddNumber("2") },
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threeButton.rx_tap.map { _ in .AddNumber("3") },
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fourButton.rx_tap.map { _ in .AddNumber("4") },
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fiveButton.rx_tap.map { _ in .AddNumber("5") },
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sixButton.rx_tap.map { _ in .AddNumber("6") },
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sevenButton.rx_tap.map { _ in .AddNumber("7") },
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eightButton.rx_tap.map { _ in .AddNumber("8") },
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nineButton.rx_tap.map { _ in .AddNumber("9") }
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]
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commands
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.toObservable()
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.merge()
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.scan(CalculatorState.CLEAR_STATE) { a, x in
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return a.tranformState(x)
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}
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.debug("debugging")
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.subscribeNext { [weak self] calState in
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self?.resultLabel.text = self?.prettyFormat(calState.inScreen)
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switch calState.action {
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case .Operation(let operation):
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switch operation {
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case .Addition:
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self?.lastSignLabel.text = "+"
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case .Subtraction:
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self?.lastSignLabel.text = "-"
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case .Multiplication:
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self?.lastSignLabel.text = "x"
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case .Division:
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self?.lastSignLabel.text = "/"
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}
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default:
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self?.lastSignLabel.text = ""
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}
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}
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.addDisposableTo(disposeBag)
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}
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func prettyFormat(str: String) -> String {
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if str.hasSuffix(".0") {
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return str.substringToIndex(str.endIndex.predecessor().predecessor())
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}
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return str
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}
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}
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