author | Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
Fri, 09 Nov 2012 12:06:45 +0100 | |
changeset 141 | 63be794c1eeb |
child 142 | 74c37d9cfdc9 |
permissions | -rw-r--r-- |
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package org.apidesign.bck2brwsr.mavenhtml; |
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import org.apidesign.bck2brwsr.htmlpage.api.OnClick; |
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import org.apidesign.bck2brwsr.htmlpage.api.Page; |
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@Page(xhtml="Calculator.xhtml") |
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public class App { |
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private static final int OP_PLUS = 1; |
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private static final int OP_MINUS = 2; |
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private static final int OP_MUL = 3; |
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private static final int OP_DIV = 4; |
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static double memory = 0; |
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static int operation = 0; |
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@OnClick(id="clear") |
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static void clear() { |
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setValue(0.0); |
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} |
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|
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private static void setValue(double v) { |
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StringBuilder sb = new StringBuilder(); |
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sb.append(v); |
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Calculator.DISPLAY.setValue(sb.toString()); |
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} |
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|
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private static double getValue() { |
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return Double.parseDouble(Calculator.DISPLAY.getValue()); |
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} |
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@OnClick(id="plus") |
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static void plus() { |
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memory = getValue(); |
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operation = OP_PLUS; |
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setValue(0.0); |
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} |
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|
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@OnClick(id="minus") |
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static void minus() { |
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memory = getValue(); |
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operation = OP_MINUS; |
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setValue(0.0); |
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} |
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|
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@OnClick(id="mul") |
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static void mul() { |
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memory = getValue(); |
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operation = OP_MUL; |
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setValue(0.0); |
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} |
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|
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@OnClick(id="result") |
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static void computeTheValue() { |
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switch (operation) { |
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case 0: break; |
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case OP_PLUS: setValue(memory + getValue()); break; |
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case OP_MINUS: setValue(memory - getValue()); break; |
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case OP_MUL: setValue(memory * getValue()); break; |
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} |
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} |
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|
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@OnClick(id={"n0", "n1", "n2", "n3", "n4", "n5", "n6", "n7", "n8", "n9"}) |
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static void addDigit(String digit) { |
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digit = digit.substring(1); |
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String v = Calculator.DISPLAY.getValue(); |
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if ("0".equals(v) || v == null) { |
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Calculator.DISPLAY.setValue(digit); |
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} else { |
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Calculator.DISPLAY.setValue(v + digit); |
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} |
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} |
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} |