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Translated Menu to English

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Signed-off-by: Jim Martens <github@2martens.de>
This commit is contained in:
Jim Martens
2017-04-14 17:19:44 +02:00
parent 2bdc92748a
commit be68b2cff0
1 changed files with 43 additions and 42 deletions
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85
02/src/de/dis2017/Menu.java
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@ -6,80 +6,81 @@ import java.io.InputStreamReader;
import java.util.ArrayList; import java.util.ArrayList;
/** /**
* Kleine Helferklasse für Menüs * Small helper class for menus.
* Zuvor müssen mit addEntry Menüoptionen hinzugefügt werden. Mit *
* der Methode show() wird das Menü angezeigt und die mit der Option * First menu entries have to be created with addEntry. Afterwards the menu can be shown
* angegebene Konstante zurückgeliefert. * on the console with show(). show() also returns the constant number of the selected menu entry.
*
* Example:
* Menu m = new Menu("Main menu");
* m.addEntry("Work hard", 0);
* m.addEntry("Rest", 1);
* m.addEntry("Go home", 2);
* int chosenOption = m.show();
* *
* Beispiel: * This results in the following output on the console:
* Menu m = new Menu("Hauptmenü"); * Main menu:
* m.addEntry("Hart arbeiten", 0); * [1] Work hard
* m.addEntry("Ausruhen", 1); * [2] Rest
* m.addEntry("Nach Hause gehen", 2); * [3] Go home
* int wahl = m.show();
*
* Angezeigt wird dann das Menü:
* Hauptmenü:
* [1] Hart arbeiten
* [2] Ausruhen
* [3] Nach Hause gehen
* -- * --
*/ */
public class Menu { class Menu {
private String title; private String _title;
private ArrayList<String> labels = new ArrayList<String>(); private ArrayList<String> _labels = new ArrayList<>();
private ArrayList<Integer> returnValues = new ArrayList<Integer>(); private ArrayList<Integer> _returnValues = new ArrayList<>();
/** /**
* Konstruktor. * Initializes the menu object.
* @param title Titel des Menüs z.B. "Hauptmenü" *
* @param title Title of the menu (e.g. "Main menu")
*/ */
public Menu(String title) { Menu(String title) {
super(); super();
this.title = title; _title = title;
} }
/** /**
* Fügt einen Menüeintrag zum Menü hinzu * Adds a new menu entry
* @param label Name des Eintrags *
* @param returnValue Konstante, die bei Wahl dieses Eintrags zurückgegeben wird * @param label Name of the entry
* @param returnValue constant number which is returned upon selection this entry
*/ */
public void addEntry(String label, int returnValue) { void addEntry(String label, int returnValue) {
this.labels.add(label); _labels.add(label);
this.returnValues.add(new Integer(returnValue)); _returnValues.add(returnValue);
} }
/** /**
* Zeigt das Menü an * Shows the menu.
* @return Die Konstante des ausgewählten Menüeintrags *
* @return The constant number of the selected menu entry.
*/ */
public int show() { int show() {
int selection = -1; int selection = -1;
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in)); BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
while(selection == -1) { while(selection == -1) {
System.out.println(title+":"); System.out.println(_title+":");
for(int i = 0; i < labels.size(); ++i) { for(int i = 0; i < _labels.size(); ++i) {
System.out.println("["+(i+1)+"] "+labels.get(i)); System.out.println("[" + (i + 1) + "] " + _labels.get(i));
} }
System.out.print("-- "); System.out.print("-- ");
try { try {
selection = Integer.parseInt(stdin.readLine()); selection = Integer.parseInt(stdin.readLine());
} catch (NumberFormatException e) { } catch (NumberFormatException | IOException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace(); e.printStackTrace();
} }
if(selection < 1 || selection > returnValues.size()) { if(selection < 1 || selection > _returnValues.size()) {
System.err.println("Ungültige Eingabe!"); System.err.println("Invalid input!");
selection = -1; selection = -1;
} }
} }
return returnValues.get(selection-1); return _returnValues.get(selection-1);
} }
} }