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MenuBarBuilder.java
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MenuBarBuilder.java
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package pippin;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.Observable;
import java.util.Observer;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
public class MenuBarBuilder implements Observer {
private JMenuItem assemble = new JMenuItem("Assemble Source...");
private JMenuItem load = new JMenuItem("Load Program...");
private JMenuItem exit = new JMenuItem("Exit");
private JMenuItem go = new JMenuItem("Go");
private Machine machine;
public MenuBarBuilder(Machine machine) {
this.machine = machine;
machine.addObserver(this);
}
@Override
public void update(Observable arg0, Object arg1) {
assemble.setEnabled(machine.getState().getAssembleFileActive());
load.setEnabled(machine.getState().getLoadFileActive());
go.setEnabled(machine.getState().getStepActive());
}
public JMenu createFileMenu() {
JMenu returnMenu = new JMenu("File");
returnMenu.setMnemonic(KeyEvent.VK_F);
assemble.setMnemonic(KeyEvent.VK_A);
assemble.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_A, ActionEvent.CTRL_MASK));
assemble.addActionListener(e -> machine.assembleFile());
returnMenu.add(assemble);
load.setMnemonic(KeyEvent.VK_L);
load.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_L, ActionEvent.CTRL_MASK));
load.addActionListener(e -> machine.loadFile());
returnMenu.add(load);
returnMenu.addSeparator();
exit.setMnemonic(KeyEvent.VK_E);
exit.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_E, ActionEvent.CTRL_MASK));
exit.addActionListener(e -> machine.exit());
returnMenu.add(exit);
return returnMenu;
}
public JMenu createExecuteMenu() {
JMenu returnMenu = new JMenu("Execute");
returnMenu.setMnemonic(KeyEvent.VK_X);
go.setMnemonic(KeyEvent.VK_G);
go.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_G, ActionEvent.CTRL_MASK));
go.addActionListener(e -> machine.execute());
returnMenu.add(go);
return returnMenu;
}
}