Create drafting process screen and prevent leaving it without user being prompted

.gitattributes

@@ -1164,7 +1164,11 @@ forge-gui-mobile/src/forge/screens/SplashScreen.java -text
 forge-gui-mobile/src/forge/screens/TabPageScreen.java -text
 forge-gui-mobile/src/forge/screens/constructed/AvatarSelector.java -text
 forge-gui-mobile/src/forge/screens/constructed/ConstructedScreen.java -text
+forge-gui-mobile/src/forge/screens/draft/CurrentPackPage.java -text
+forge-gui-mobile/src/forge/screens/draft/DraftDeckPage.java -text
 forge-gui-mobile/src/forge/screens/draft/DraftScreen.java -text
+forge-gui-mobile/src/forge/screens/draft/DraftSideboardPage.java -text
+forge-gui-mobile/src/forge/screens/draft/DraftingProcessScreen.java -text
 forge-gui-mobile/src/forge/screens/gauntlet/GauntletScreen.java -text
 forge-gui-mobile/src/forge/screens/home/HomeScreen.java -text
 forge-gui-mobile/src/forge/screens/match/FControl.java -text

forge-gui-mobile/src/forge/Forge.java

@@ -145,11 +145,15 @@ public class Forge implements ApplicationListener {
             exit(); //prompt to exit if attempting to go back from home screen
             return;
         }
-        if (!currentScreen.onClose(true)) {
+        currentScreen.onClose(new Callback<Boolean>() {
-            return;
+            @Override
-        }
+            public void run(Boolean result) {
-        screens.pop();
+                if (result) {
-        setCurrentScreen(screens.lastElement());
+                    screens.pop();
+                    setCurrentScreen(screens.lastElement());
+                }
+            }
+        });
     }
 
     public static void exit() {
@@ -163,13 +167,24 @@ public class Forge implements ApplicationListener {
         });
     }
 
-    public static void openScreen(FScreen screen0) {
+    public static void openScreen(final FScreen screen0) {
         if (currentScreen == screen0) { return; }
-        if (currentScreen != null && !currentScreen.onSwitchAway()) {
+
+        if (currentScreen == null) {
+            screens.push(screen0);
+            setCurrentScreen(screen0);
             return;
         }
-        screens.push(screen0);
+
-        setCurrentScreen(screen0);
+        currentScreen.onSwitchAway(new Callback<Boolean>() {
+            @Override
+            public void run(Boolean result) {
+                if (result) {
+                    screens.push(screen0);
+                    setCurrentScreen(screen0);
+                }
+            }
+        });
     }
 
     public static FScreen getCurrentScreen() {
@@ -256,7 +271,7 @@ public class Forge implements ApplicationListener {
                 overlay.hide();
                 overlay = FOverlay.getTopOverlay();
             }
-            currentScreen.onClose(false);
+            currentScreen.onClose(null);
             currentScreen = null;
         }
         screens.clear();

forge-gui-mobile/src/forge/screens/FScreen.java

@@ -15,6 +15,7 @@ import forge.toolbox.FContainer;
 import forge.toolbox.FEvent;
 import forge.toolbox.FEvent.FEventHandler;
 import forge.toolbox.FLabel;
+import forge.util.Callback;
 import forge.util.Utils;
 
 public abstract class FScreen extends FContainer {
@@ -45,12 +46,14 @@ public abstract class FScreen extends FContainer {
     public void onActivate() {
     }
 
-    public boolean onSwitchAway() {
+    public void onSwitchAway(Callback<Boolean> canSwitchCallback) {
-        return true;
+        canSwitchCallback.run(true);
     }
 
-    public boolean onClose(boolean canCancel) {
+    public void onClose(Callback<Boolean> canCloseCallback) {
-        return true;
+        if (canCloseCallback != null) { //will be null if app exited
+            canCloseCallback.run(true);
+        }
     }
 
     public void showMenu() {

forge-gui-mobile/src/forge/screens/draft/CurrentPackPage.java

@@ -0,0 +1,19 @@
+package forge.screens.draft;
+
+import forge.assets.FSkinImage;
+import forge.limited.BoosterDraft;
+import forge.screens.TabPageScreen.TabPage;
+
+public class CurrentPackPage extends TabPage {
+    private final BoosterDraft draft;
+
+    protected CurrentPackPage(BoosterDraft draft0) {
+        super("Pack 1", FSkinImage.PACK);
+
+        draft = draft0;
+    }
+
+    @Override
+    protected void doLayout(float width, float height) {
+    }
+}

forge-gui-mobile/src/forge/screens/draft/DraftDeckPage.java

@@ -0,0 +1,19 @@
+package forge.screens.draft;
+
+import forge.assets.FSkinImage;
+import forge.limited.BoosterDraft;
+import forge.screens.TabPageScreen.TabPage;
+
+public class DraftDeckPage extends TabPage {
+    private final BoosterDraft draft;
+
+    protected DraftDeckPage(BoosterDraft draft0) {
+        super("Deck", FSkinImage.DECKLIST);
+
+        draft = draft0;
+    }
+
+    @Override
+    protected void doLayout(float width, float height) {
+    }
+}

forge-gui-mobile/src/forge/screens/draft/DraftScreen.java

@@ -1,5 +1,7 @@
 package forge.screens.draft;
 
+import forge.FThreads;
+import forge.Forge;
 import forge.GuiBase;
 import forge.properties.ForgePreferences.FPref;
 import forge.screens.LaunchScreen;
@@ -52,8 +54,15 @@ public class DraftScreen extends LaunchScreen {
                         final LimitedPoolType poolType = SGuiChoose.oneOrNone("Choose Draft Format", LimitedPoolType.values());
                         if (poolType == null) { return; }
 
-                        BoosterDraft draft = BoosterDraft.createDraft(poolType);
+                        final BoosterDraft draft = BoosterDraft.createDraft(poolType);
                         if (draft == null) { return; }
+
+                        FThreads.invokeInEdtLater(new Runnable() {
+                            @Override
+                            public void run() {
+                                Forge.openScreen(new DraftingProcessScreen(draft));
+                            }
+                        });
                     }
                 });
             }

forge-gui-mobile/src/forge/screens/draft/DraftSideboardPage.java

@@ -0,0 +1,19 @@
+package forge.screens.draft;
+
+import forge.assets.FSkinImage;
+import forge.limited.BoosterDraft;
+import forge.screens.TabPageScreen.TabPage;
+
+public class DraftSideboardPage extends TabPage {
+    private final BoosterDraft draft;
+
+    protected DraftSideboardPage(BoosterDraft draft0) {
+        super("Sideboard", FSkinImage.FLASHBACK);
+
+        draft = draft0;
+    }
+
+    @Override
+    protected void doLayout(float width, float height) {
+    }
+}

forge-gui-mobile/src/forge/screens/draft/DraftingProcessScreen.java

@@ -0,0 +1,23 @@
+package forge.screens.draft;
+
+import forge.limited.BoosterDraft;
+import forge.screens.TabPageScreen;
+import forge.toolbox.FOptionPane;
+import forge.util.Callback;
+
+public class DraftingProcessScreen extends TabPageScreen {
+    public DraftingProcessScreen(BoosterDraft draft0) {
+        super(new TabPage[] {
+                new CurrentPackPage(draft0),
+                new DraftDeckPage(draft0),
+                new DraftSideboardPage(draft0)
+        });
+    }
+
+    @Override
+    public void onClose(Callback<Boolean> canCloseCallback) {
+        if (canCloseCallback == null) { return; }
+        FOptionPane.showConfirmDialog("This will end the current draft and you will not be able to resume.\n\n" +
+                "Leave anyway?", "Leave Draft?", "Leave", "Cancel", false, canCloseCallback);
+    }
+}

forge-gui-mobile/src/forge/screens/match/MatchScreen.java

@@ -36,6 +36,7 @@ import forge.game.zone.ZoneType;
 import forge.toolbox.FEvent;
 import forge.toolbox.FEvent.FEventHandler;
 import forge.toolbox.FScrollPane;
+import forge.util.Callback;
 
 public class MatchScreen extends FScreen {
     public static FSkinColor BORDER_COLOR = FSkinColor.get(Colors.CLR_BORDERS);
@@ -117,9 +118,9 @@ public class MatchScreen extends FScreen {
     }
 
     @Override
-    public boolean onClose(boolean canCancel) {
+    public void onClose(Callback<Boolean> canCloseCallback) {
         FControl.writeMatchPreferences();
-        return true;
+        super.onClose(canCloseCallback);
     }
 
     @Override