javaquery/demo-calculator-dynamic/src/main/java/org/apidesign/bck2brwsr/demo/calc/Calc.java
1.1 --- a/javaquery/demo-calculator-dynamic/src/main/java/org/apidesign/bck2brwsr/demo/calc/Calc.java Thu May 15 11:38:27 2014 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,146 +0,0 @@
1.4 -/**
1.5 - * Back 2 Browser Bytecode Translator
1.6 - * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, version 2 of the License.
1.11 - *
1.12 - * This program is distributed in the hope that it will be useful,
1.13 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 - * GNU General Public License for more details.
1.16 - *
1.17 - * You should have received a copy of the GNU General Public License
1.18 - * along with this program. Look for COPYING file in the top folder.
1.19 - * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 - */
1.21 -package org.apidesign.bck2brwsr.demo.calc;
1.22 -
1.23 -import java.util.List;
1.24 -import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
1.25 -import org.apidesign.bck2brwsr.htmlpage.api.On;
1.26 -import static org.apidesign.bck2brwsr.htmlpage.api.OnEvent.*;
1.27 -import org.apidesign.bck2brwsr.htmlpage.api.OnFunction;
1.28 -import org.apidesign.bck2brwsr.htmlpage.api.Page;
1.29 -import org.apidesign.bck2brwsr.htmlpage.api.Property;
1.30 -
1.31 -/** HTML5 & Java demo showing the power of
1.32 - * <a href="http://wiki.apidesign.org/wiki/AnnotationProcessor">annotation processors</a>
1.33 - * as well as other goodies.
1.34 - *
1.35 - * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.36 - */
1.37 -@Page(xhtml="Calculator.xhtml", properties = {
1.38 - @Property(name = "memory", type = double.class),
1.39 - @Property(name = "display", type = double.class),
1.40 - @Property(name = "operation", type = String.class),
1.41 - @Property(name = "hover", type = boolean.class),
1.42 - @Property(name = "history", type = HistoryImpl.class, array = true)
1.43 -})
1.44 -public class Calc {
1.45 - static {
1.46 - new Calculator().applyBindings().setOperation("plus");
1.47 - }
1.48 -
1.49 - @On(event = CLICK, id="clear")
1.50 - static void clear(Calculator c) {
1.51 - c.setMemory(0);
1.52 - c.setOperation(null);
1.53 - c.setDisplay(0);
1.54 - }
1.55 -
1.56 - @On(event = CLICK, id= { "plus", "minus", "mul", "div" })
1.57 - static void applyOp(Calculator c, String id) {
1.58 - c.setMemory(c.getDisplay());
1.59 - c.setOperation(id);
1.60 - c.setDisplay(0);
1.61 - }
1.62 -
1.63 - @On(event = MOUSE_OVER, id= { "result" })
1.64 - static void attemptingIn(Calculator c) {
1.65 - c.setHover(true);
1.66 - }
1.67 - @On(event = MOUSE_OUT, id= { "result" })
1.68 - static void attemptingOut(Calculator c) {
1.69 - c.setHover(false);
1.70 - }
1.71 -
1.72 - @On(event = CLICK, id="result")
1.73 - static void computeTheValue(Calculator c) {
1.74 - final double newValue = compute(
1.75 - c.getOperation(),
1.76 - c.getMemory(),
1.77 - c.getDisplay()
1.78 - );
1.79 - c.setDisplay(newValue);
1.80 - if (!containsValue(c.getHistory(), newValue)) {
1.81 - History h = new History();
1.82 - h.setValue(newValue);
1.83 - h.setOperation(c.getOperation());
1.84 - c.getHistory().add(h);
1.85 - }
1.86 - c.setMemory(0);
1.87 - }
1.88 -
1.89 - @OnFunction
1.90 - static void recoverMemory(Calculator c, History data) {
1.91 - c.setDisplay(data.getValue());
1.92 - }
1.93 -
1.94 - @OnFunction
1.95 - static void removeMemory(Calculator c, History data) {
1.96 - c.getHistory().remove(data);
1.97 - }
1.98 -
1.99 - private static double compute(String op, double memory, double display) {
1.100 - switch (op) {
1.101 - case "plus": return memory + display;
1.102 - case "minus": return memory - display;
1.103 - case "mul": return memory * display;
1.104 - case "div": return memory / display;
1.105 - default: throw new IllegalStateException(op);
1.106 - }
1.107 - }
1.108 -
1.109 - @On(event = CLICK, id={"n0", "n1", "n2", "n3", "n4", "n5", "n6", "n7", "n8", "n9"})
1.110 - static void addDigit(String id, Calculator c) {
1.111 - id = id.substring(1);
1.112 -
1.113 - double v = c.getDisplay();
1.114 - if (v == 0.0) {
1.115 - c.setDisplay(Integer.parseInt(id));
1.116 - } else {
1.117 - String txt = Double.toString(v);
1.118 - if (txt.endsWith(".0")) {
1.119 - txt = txt.substring(0, txt.length() - 2);
1.120 - }
1.121 - txt = txt + id;
1.122 - c.setDisplay(Double.parseDouble(txt));
1.123 - }
1.124 - }
1.125 -
1.126 - @ComputedProperty
1.127 - public static String displayPreview(
1.128 - double display, boolean hover, double memory, String operation
1.129 - ) {
1.130 - if (!hover) {
1.131 - return "Type numbers and perform simple operations! Press '=' to get result.";
1.132 - }
1.133 - return "Attempt to compute " + memory + " " + operation + " " + display + " = " + compute(operation, memory, display);
1.134 - }
1.135 -
1.136 - @ComputedProperty
1.137 - static boolean emptyHistory(List<?> history) {
1.138 - return history.isEmpty();
1.139 - }
1.140 -
1.141 - private static boolean containsValue(List<History> arr, final double newValue) {
1.142 - for (History history : arr) {
1.143 - if (history.getValue() == newValue) {
1.144 - return true;
1.145 - }
1.146 - }
1.147 - return false;
1.148 - }
1.149 -}