java 简易计算器 mvc 设计模式

package calculator; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; public class Controller { static View view = null; Model model = new Model(); public static void main(String[] args) { view = new View(); view.initPanel(); } // �����ֽ���������� public void controlNumbers(JButton button, final String number) { button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { // �������������01��002������ String temp = view.getJt1().getText(); if ("0".equals(temp)) { view.getJt1().setText(number); } else { view.getJt1().setText(temp + number); } } }); } // �Բ������п��� public void controlOperators(JButton button, final String operator) { button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { String temp = view.getJt1().getText(); // ����ʽ��ʾ���ı�����(��(�����) showText(temp, operator); // ��Ӧ���ְ�ť�¼� buttonClicked(operator, temp); } private void showText(String temp, String operator) { String str = ""; // ������1+2��-1+2����ʽ����ʱ�ٰ����������������1+2�Ľ����ִ�к�������� if (temp.matches(".+[\\+|\\-|\\*|\\/].+") && !".".equals(operator)) { action(temp); view.getJt1().setText(view.getJt1().getText() + operator); } else if (temp.charAt(temp.length() - 1) == '+'// ����ʽΪ����1+ʱ�ٰ�-������ʽ���1- || temp.charAt(temp.length() - 1) == '-' || temp.charAt(temp.length() - 1) == '*' || temp.charAt(temp.length() - 1) == '/' || temp.charAt(temp.length() - 1) == '.') { // ��ԭ��ʽ�д���.�ţ��������ٶ�.�Ž������� if (".".equals(operator) && temp.contains(".")) { view.getJt1().setText(temp); } else { str = temp.substring(0, temp.length() - 1) + operator; view.getJt1().setText(str); } } else { if (".".equals(operator) && temp.contains(".")) { view.getJt1().setText(temp); } else { view.getJt1().setText(temp + operator); } } } // �ж��û���ִ�еIJ�����������Ӧ���¼���Ӧ private void buttonClicked(String operator, String temp) { // ��Ӧ=��ť if ("=".equals(operator)) { responseEqual(temp); } // ��ӦClear��ť if ("Clear".equals(operator)) { responseClear(temp); } // ��ӦBackSpace��ť if ("BackSpace".equals(operator)) { responseBackSpace(temp); } // ��Ӧ1/X��ť if ("1/X".equals(operator)) { responseDaoShu(temp); } // ��ӦSqrt��ť if ("Sqrt".equals(operator)) { responseSqrt(temp); } } // ��ʾ�����Ľ�� private void responseClear(String temp) { view.getJt1().setText("0"); } // ��ʾ������ private void responseEqual(String temp) { if (!(temp.matches(".+[\\+|\\-|\\*|\\/].+"))) { view.getJt1().setText(temp); } else { action(temp); } } // ��ʾ�˸��Ľ�� private void responseBackSpace(String temp) { if (temp.length() == 1) { view.getJt1().setText("0"); } else { view.getJt1().setText(temp.substring(0, temp.length() - 1)); } } // ��ʾ�󵹺�Ľ�� private void responseDaoShu(String temp) { if ((temp.matches(".+[\\+|\\-|\\*|\\/].+"))) { action(temp); view.getJt1().setText( String.valueOf(model.DaoShu((Double.valueOf(view.getJt1().getText()))))); } else if (temp.matches(".*[\\+|\\-|\\*|\\/\\.]")) { view.getJt1().setText(temp); } else { view.getJt1().setText(String.valueOf(model.DaoShu(Double.valueOf(temp)))); } } // ��ʾ������Ľ�� private void responseSqrt(String temp) { if ((temp.matches(".+[\\+|\\-|\\*|\\/].+"))) { action(temp); view.getJt1() .setText(String.valueOf(model.sqrt(Double.valueOf(view.getJt1().getText())))); } else if (temp.matches(".*[\\+|\\-|\\*|\\/\\.]")) { view.getJt1().setText(temp); } else { view.getJt1().setText(String.valueOf(model.sqrt(Double.valueOf(temp)))); } } // �Ӽ�˳��ȷ�� private void action(String temp) { String source = ""; String target = ""; double result = 0; loop: for (int j = temp.length() - 1; j >= 0; j--) { for (int i = 0; i < view.getOperators().length; i++) { if (temp.charAt(j) == view.getOperators()[i].toCharArray()[0]) { if (temp.matches("-.*")) {// ������-1-1����ʽ(��Դ������Ϊ����ʱ)�������⴦�� source = "-" + temp.substring(1, temp.length()).substring( 0, temp.substring(1, temp.length()).indexOf( view.getOperators()[i])); target = temp.substring(1, temp.length()) .substring( temp.substring(1, temp.length()).indexOf(view.getOperators()[i]) + 1, temp.substring(1, temp.length()).length()); } else {// ��Դ������Ϊ�Ǹ�����ʽ���д��� source = temp.substring(0, temp.indexOf(view.getOperators()[i])); target = temp.substring(temp.indexOf(view.getOperators()[i]) + 1, temp .length()); } switch (view.getOperators()[i].toCharArray()[0]) { case '+': result = model.plus(Double.valueOf(source), Double.valueOf(target)); break; case '-': result = model.minus(Double.valueOf(source), Double.valueOf(target)); break; case '*': result = model.multiply(Double.valueOf(source), Double.valueOf(target)); break; case '/': result = model.divide(Double.valueOf(source), Double.valueOf(target)); break; default: break; } view.getJt1().setText(String.valueOf(result)); break loop; } } } } }); } }