Panel reloading upon choice works

src/main/java/xyz/thastertyn/Types/Choice.java

@@ -1,14 +1,14 @@
 package xyz.thastertyn.Types;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 
 public class Choice {
 	
 	private ArrayList<String> choices;
-	public Choice(String... choices)
+
+	public Choice(ArrayList<String> c)
 	{
-		this.choices.addAll(Arrays.asList(choices));
+		this.choices = c;
 	}
 
 	public ArrayList<String> getChoices()

src/main/java/xyz/thastertyn/Types/Option.java

@@ -22,6 +22,6 @@ public class Option {
 	}
 	@Override
 	public String toString() {
-		return text;
+		return value;
 	}
 }

src/main/java/xyz/thastertyn/Types/Predmet.java

@@ -14,12 +14,18 @@ public class Predmet {
 		this.jmenoPredmetu = jmenoPredmetu;
 	}
 
+	public Predmet(String jmenoPredmetu, int vyslednaZnamka)
+	{
+		this.jmenoPredmetu = jmenoPredmetu;
+		this.vyslednaZnamka = vyslednaZnamka;
+	}
+
 	public void addZnamka(Znamka novaZnamka)
 	{
 		znamky.add(novaZnamka);
 	}
 
-	public double getPrumer()
+	public double getVyslednaZnamka()
 	{
 		if(vyslednaZnamka != 0)
 		{

src/main/java/xyz/thastertyn/UserInterface/Content/JecnaContent.java

@@ -1,11 +1,14 @@
 package xyz.thastertyn.UserInterface.Content;
 
+import java.io.IOException;
+
+import com.googlecode.lanterna.gui2.Label;
+import com.googlecode.lanterna.gui2.Panel;
 import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
 
 import xyz.thastertyn.Types.Choice;
+import xyz.thastertyn.UserInterface.UpdateListener;
 
-import com.googlecode.lanterna.gui2.Panel;
-import com.googlecode.lanterna.gui2.Label;
 
 /**
  * Wrapper to include all classes that deal with content in some way
@@ -13,10 +16,11 @@ import com.googlecode.lanterna.gui2.Label;
 public abstract class JecnaContent {
 	
 	public abstract Panel getPanel();
-	public abstract void downloadDefault();
+	public abstract void downloadDefault() throws IOException;
-	protected abstract void download(Choice choice);
+	protected abstract void download(Choice choice) throws IOException;
 	public abstract boolean hasStarted();
 	public abstract Label getLabel();
-	public abstract void showOptions(final WindowBasedTextGUI textGUI);
+	public abstract void showOptions(final WindowBasedTextGUI textGUI) throws IOException;
 	protected abstract void setGUI();
+	public abstract void setUpdateListener(UpdateListener updateListener);
 }

src/main/java/xyz/thastertyn/UserInterface/Content/OmluvnyList.java

@@ -10,6 +10,7 @@ import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
 
 import xyz.thastertyn.Tuples.Pair;
 import xyz.thastertyn.Types.Choice;
+import xyz.thastertyn.UserInterface.UpdateListener;
 
 public class OmluvnyList extends JecnaContent{
 	
@@ -17,6 +18,8 @@ public class OmluvnyList extends JecnaContent{
 	private Label borderLabel = new Label("Omluvny L.");
 	private xyz.thastertyn.Scrape.OmluvnyList omluvnyList = new xyz.thastertyn.Scrape.OmluvnyList();
 
+	private UpdateListener listener;
+
 	private boolean hasStarted = false;
 
 	@Override
@@ -73,4 +76,9 @@ public class OmluvnyList extends JecnaContent{
 		// TODO Auto-generated method stub
 		throw new UnsupportedOperationException("Unimplemented method 'getOptions'");
 	}
+
+	@Override
+	public void setUpdateListener(UpdateListener updateListener) {
+		this.listener = updateListener;
+	}
 }

src/main/java/xyz/thastertyn/UserInterface/Content/Rozvrh.java

@@ -9,6 +9,7 @@ import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
 import com.googlecode.lanterna.gui2.table.Table;
 
 import xyz.thastertyn.Types.Choice;
+import xyz.thastertyn.UserInterface.UpdateListener;
 
 public class Rozvrh extends JecnaContent {
 	
@@ -16,6 +17,8 @@ public class Rozvrh extends JecnaContent {
 	private Label borderLabel = new Label("Rozvrh");
 	private xyz.thastertyn.Scrape.Rozvrh rozvrh = new xyz.thastertyn.Scrape.Rozvrh();
 
+	private UpdateListener listener;
+
 	private boolean hasStarted = false;
 
 	private String[] labels = {"Den", "7:30-8:15", "8:25-9:10", "9:20-10:05", "10:20-11:05", "11:15-12:00", "12:10-12:55", "13:05-13:50", "14:00-14:45", "14:55-15:40", "15:50-16:35"};
@@ -91,4 +94,9 @@ public class Rozvrh extends JecnaContent {
 		// TODO Auto-generated method stub
 		throw new UnsupportedOperationException("Unimplemented method 'getOptions'");
 	}
+
+	@Override
+	public void setUpdateListener(UpdateListener updateListener) {
+		this.listener = updateListener;
+	}
 }

src/main/java/xyz/thastertyn/UserInterface/Content/Sdeleni.java

@@ -11,6 +11,7 @@ import com.googlecode.lanterna.gui2.Panel;
 import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
 
 import xyz.thastertyn.Types.Choice;
+import xyz.thastertyn.UserInterface.UpdateListener;
 
 public class Sdeleni extends JecnaContent {
 	
@@ -19,6 +20,8 @@ public class Sdeleni extends JecnaContent {
 
 	private xyz.thastertyn.Scrape.Sdeleni sdeleni = new xyz.thastertyn.Scrape.Sdeleni();
 
+	private UpdateListener listener;
+
 	private boolean hasStarted = false;
 
 	@Override
@@ -78,4 +81,9 @@ public class Sdeleni extends JecnaContent {
 		// TODO Auto-generated method stub
 		throw new UnsupportedOperationException("Unimplemented method 'getOptions'");
 	}
+
+	@Override
+	public void setUpdateListener(UpdateListener updateListener) {
+		this.listener = updateListener;
+	}
 }

src/main/java/xyz/thastertyn/UserInterface/Content/Znamky.java

@@ -18,6 +18,7 @@ import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
 import xyz.thastertyn.Types.Choice;
 import xyz.thastertyn.Types.Predmet;
 import xyz.thastertyn.Types.Znamka;
+import xyz.thastertyn.UserInterface.UpdateListener;
 import xyz.thastertyn.UserInterface.Dialogs.OptionsDialog;
 
 public class Znamky extends JecnaContent {
@@ -41,24 +42,24 @@ public class Znamky extends JecnaContent {
 		true,
 		false);
 	
-	private Panel mainPanel = new Panel()
+	private Panel mainPanel;
-	.setLayoutManager(new GridLayout(3));
-
 	private Label borderLabel = new Label("Znamky");
-	private xyz.thastertyn.Scrape.Znamky znamky = new xyz.thastertyn.Scrape.Znamky();
+	private xyz.thastertyn.Scrape.Znamky znamky;
+
+	private UpdateListener listener;
 	
 	private boolean hasStarted = false;
 
 	@Override
-	public void downloadDefault()
+	public void downloadDefault() throws IOException
 	{
 		download(null);
 	}
 
 	@Override
-	protected void download(Choice choice)
+	protected void download(Choice choice) throws IOException
 	{
-		try{
+		znamky = new xyz.thastertyn.Scrape.Znamky();
 		if(choice != null)
 		{
 			znamky.downloadZnamky(choice);
@@ -67,26 +68,26 @@ public class Znamky extends JecnaContent {
 		}
 		
 		setGUI();
+		listener.updatePanel();
 
 		hasStarted = true;
-		}catch(IOException e)
-		{
-			mainPanel.addComponent(new Label("An error has occured"));
-		}
 	}
 
 	@Override
 	protected void setGUI()
 	{
-		ArrayList<Predmet> predmety = znamky.getPredmety();
+		mainPanel = new Panel()
+		.setLayoutManager(new GridLayout(3));
 	
-		HashMap<Integer, SimpleTheme> barvy = new HashMap<>();
+		ArrayList<Predmet> subjects = znamky.getPredmety();
-		barvy.put(1, new SimpleTheme(ANSI.BLACK, VYBORNY));
+			
-		barvy.put(2, new SimpleTheme(ANSI.BLACK, CHVALITEBNY));
+		HashMap<Integer, SimpleTheme> colors = new HashMap<>();
-		barvy.put(3, new SimpleTheme(ANSI.BLACK, DOBRY));
+		colors.put(1, new SimpleTheme(ANSI.BLACK, VYBORNY));
-		barvy.put(4, new SimpleTheme(ANSI.BLACK, DOSTATECNY));
+		colors.put(2, new SimpleTheme(ANSI.BLACK, CHVALITEBNY));
-		barvy.put(5, new SimpleTheme(ANSI.BLACK, NEDOSTATECNY));
+		colors.put(3, new SimpleTheme(ANSI.BLACK, DOBRY));
-		barvy.put(-1, new SimpleTheme(ANSI.WHITE, NEHODNOCEN));
+		colors.put(4, new SimpleTheme(ANSI.BLACK, DOSTATECNY));
+		colors.put(5, new SimpleTheme(ANSI.BLACK, NEDOSTATECNY));
+		colors.put(-1, new SimpleTheme(ANSI.WHITE, NEHODNOCEN));
 
 		// Sloupec pro jmena predmetu
 		Panel jmemaPredmetu = new Panel()
@@ -106,7 +107,7 @@ public class Znamky extends JecnaContent {
 		.setLayoutData(ALIGN_RIGHT)
 		.addTo(mainPanel);
 
-		for(Predmet predmet : predmety)
+		for(Predmet predmet : subjects)
 		{
 			Panel jednotliveZnamky = new Panel()
 			.setLayoutManager(new LinearLayout(Direction.HORIZONTAL))
@@ -120,19 +121,20 @@ public class Znamky extends JecnaContent {
 			for(Znamka znamka : predmet.getZnamky())
 			{
 				Label znamkaLabel = new Label(znamka.getText());
-				znamkaLabel.setTheme(barvy.get(znamka.getZnamka()));
+				znamkaLabel.setTheme(colors.get(znamka.getZnamka()));
 				jednotliveZnamky.addComponent(znamkaLabel);
 			}
 			
-			double prumer = predmet.getPrumer();
+			double prumer = predmet.getVyslednaZnamka();
 
 			Label vysl = new Label(String.format("%.2f", prumer));
 			
-			vysl.setTheme(barvy.get((int) Math.round(prumer)));
+			vysl.setTheme(colors.get((int) Math.round(prumer)));
 			
 			jmemaPredmetu.addComponent(new Label(predmet.getJmenoPredmetu()));
 			vysledneZnamky.addComponent(vysl);
 		}
+		mainPanel.invalidate();
 	}
 
 
@@ -155,7 +157,7 @@ public class Znamky extends JecnaContent {
 	}
 
 	@Override
-	public void showOptions(WindowBasedTextGUI textGUI) {
+	public void showOptions(WindowBasedTextGUI textGUI) throws IOException {
 		OptionsDialog d = new OptionsDialog(znamky.getOptions().getValue0(), znamky.getOptions().getValue1());
 
 		Choice c = d.showDialog(textGUI);
@@ -165,4 +167,9 @@ public class Znamky extends JecnaContent {
 			download(c);
 		}
 	}
+
+	@Override
+	public void setUpdateListener(UpdateListener updateListener) {
+		this.listener = updateListener;
+	}
 }

src/main/java/xyz/thastertyn/UserInterface/Dialogs/EscapeDialog.java

@@ -0,0 +1,59 @@
+package xyz.thastertyn.UserInterface.Dialogs;
+
+import java.util.Arrays;
+
+import com.googlecode.lanterna.gui2.Button;
+import com.googlecode.lanterna.gui2.GridLayout;
+import com.googlecode.lanterna.gui2.LocalizedString;
+import com.googlecode.lanterna.gui2.Panel;
+import com.googlecode.lanterna.gui2.Window;
+import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
+import com.googlecode.lanterna.gui2.dialogs.DialogWindow;
+
+public class EscapeDialog extends DialogWindow {
+
+	public EscapeDialog()
+	{
+		super("Choose from below");
+
+		Panel mainPanel = new Panel()
+			.setLayoutManager(new GridLayout(1)
+				.setLeftMarginSize(1)
+				.setRightMarginSize(1));
+
+
+		new Panel()
+			.setLayoutManager(
+				new GridLayout(2).setHorizontalSpacing(1))
+			.addComponent(
+				new Button(LocalizedString.OK.toString(), this::onOK)
+					.setLayoutData(GridLayout.createLayoutData(
+						GridLayout.Alignment.CENTER,
+						GridLayout.Alignment.CENTER,
+						true,
+						false)))
+			.addComponent(
+				new Button(LocalizedString.Cancel.toString(), this::onCancel))
+				.addTo(mainPanel);
+
+
+		setHints(Arrays.asList(Window.Hint.CENTERED));
+		setComponent(mainPanel);
+	}
+
+	public void onOK()
+	{
+		close();
+	}
+
+	public void onCancel()
+	{
+		close();
+	}
+
+	@Override
+	public Object showDialog(WindowBasedTextGUI textGUI) {
+		super.showDialog(textGUI);
+		return null;
+	}
+}

src/main/java/xyz/thastertyn/UserInterface/Dialogs/OptionsDialog.java

@@ -90,11 +90,20 @@ public class OptionsDialog extends DialogWindow {
 	public Choice showDialog(WindowBasedTextGUI textGUI) {
 		super.showDialog(textGUI);
 
+		Choice c;
+
+		ArrayList<String> s = new ArrayList<>();
+
+		for(ComboBox<Option> b : boxs)
+		{
+			s.add(b.getSelectedItem().getValue());
+		}
+
+		c = new Choice(s);
+
+
 		return (useData) ?
-			new Choice( // User pressed ok
+			c
-				boxs.stream()
-				.map(b -> b.getSelectedItem().toString())
-				.toArray(String[]::new))
 			:
 			null; // User pressed Cancel
 	}

src/main/java/xyz/thastertyn/UserInterface/UpdateListener.java

@@ -0,0 +1,6 @@
+package xyz.thastertyn.UserInterface;
+
+public interface UpdateListener {
+	
+	public void updatePanel();
+}

src/main/java/xyz/thastertyn/UserInterface/WindowSwitchListener.java

@@ -1,5 +1,6 @@
 package xyz.thastertyn.UserInterface;
 
+import java.io.IOException;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import com.googlecode.lanterna.TerminalPosition;
@@ -23,8 +24,7 @@ import xyz.thastertyn.UserInterface.Content.Rozvrh;
 import xyz.thastertyn.UserInterface.Content.Sdeleni;
 import xyz.thastertyn.UserInterface.Content.Znamky;
 
-public class WindowSwitchListener implements WindowListener {
+public class WindowSwitchListener implements WindowListener, UpdateListener {
-
 	private WindowBasedTextGUI textGUI;
 
 	private JecnaContent[] contents = {
@@ -39,8 +39,6 @@ public class WindowSwitchListener implements WindowListener {
 	private Panel tabsPanel = new Panel().setLayoutManager(new LinearLayout(Direction.HORIZONTAL));
 	private Panel holderPanel = new Panel();
 
-	private Panel errorPanel = new Panel().addComponent(new Label("Something went wrong"));
-
 	int current = contents.length - 1;
 
 	public WindowSwitchListener(Panel holder, String title, WindowBasedTextGUI textGUI)
@@ -55,6 +53,11 @@ public class WindowSwitchListener implements WindowListener {
 			tabsPanel.addComponent(this.tabs[i]);
 		}
 
+		for(JecnaContent c : contents)
+		{
+			c.setUpdateListener(this);
+		}
+
 		next();
 	}
 
@@ -67,15 +70,45 @@ public class WindowSwitchListener implements WindowListener {
 			current++;
 		}
 		
-		if(!contents[current].hasStarted())
+		loadPanel();
-		{
-			contents[current].downloadDefault();
 	}
 
+	private void previous()
+	{
+		if(current - 1 == -1)
+		{
+			current = contents.length - 1;
+		}else{
+			current--;
+		}
+		loadPanel();
+	}
+
+	private void loadPanel()
+	{
+		checkIfDownloadedCorrectly();
+
 		holderPanel.removeAllComponents();
 		tabsPanel.removeAllComponents();
 
-		if(contents[current].hasStarted())
+		setPanelPreferedSize();
+		updateLabels();
+	}
+
+	private void checkIfDownloadedCorrectly()
+	{
+		if(!contents[current].hasStarted())
+		{
+			try{
+				contents[current].downloadDefault();
+			}catch(IOException e)
+			{
+				MessageDialog.showMessageDialog(textGUI, "Something failed", "The content failed to download", MessageDialogButton.OK);
+			}
+		}
+	}
+
+	private void setPanelPreferedSize()
 	{
 		int tabColumns = tabsPanel.getSize().getColumns();
 		
@@ -88,10 +121,10 @@ public class WindowSwitchListener implements WindowListener {
 		}else{
 			holderPanel.addComponent(contents[current].getPanel());
 		}
-		}else{
-			holderPanel.addComponent(errorPanel);
 	}
 
+	private void updateLabels()
+	{
 		for(int i = 0; i < tabs.length; i++)
 		{
 			if(i == current)
@@ -103,6 +136,16 @@ public class WindowSwitchListener implements WindowListener {
 		}
 	}
 
+	private void showOptions()
+	{
+		try{
+			contents[current].showOptions(textGUI);
+		}catch(IOException e)
+		{
+			MessageDialog.showMessageDialog(textGUI, "Something failed", "An error with connection has occured, either no connection at all, or connection timed out", MessageDialogButton.OK);
+		}
+	}
+
 	@Override
 	public void onInput(Window basePane, KeyStroke keyStroke, AtomicBoolean deliverEvent) {
 		KeyType type = keyStroke.getKeyType();
@@ -110,12 +153,17 @@ public class WindowSwitchListener implements WindowListener {
 		switch(type)
 		{
 			case Tab:
+				if(keyStroke.isShiftDown())
+				{
+					previous();
+				}else{
 					next();
+				}
 				break;
 			case Character:
 				if(keyStroke.getCharacter() == ' ')
 				{
-					contents[current].showOptions(textGUI);
+					showOptions();
 				}
 				break;
 			case Escape:
@@ -141,4 +189,10 @@ public class WindowSwitchListener implements WindowListener {
 		// TODO Auto-generated method stub
 	}
 
+	@Override
+	public void updatePanel() {
+		holderPanel.removeAllComponents();
+		holderPanel.addComponent(contents[current].getPanel());
+	}
+	
 }