Fixes #32

app/src/main/java/gui/menu/MultiPlayerView.java

@@ -78,4 +78,9 @@ public class MultiPlayerView extends BaseView {
 		renderGameStatus();
 	}
 
+	@Override
+	public void cleanResources() {
+		this.selector.clean();
+	}
+
 }

app/src/main/java/gui/menu/SoloMenu.java

@@ -25,4 +25,9 @@ public class SoloMenu extends BaseView {
 		renderReturnButton();
 	}
 
+	@Override
+	public void cleanResources() {
+		this.sudokuSelector.clean();
+	}
+
 }

app/src/main/java/gui/widget/SmoothProgressBar.java

@@ -9,13 +9,22 @@ public class SmoothProgressBar {
 	private final float speed = 2.0f;
 	private final float clipConstant = 0.001f;
 
-	public void render(String label, ImVec2 size, float progress) {
-		float delta = progress - lastProgress;
+	private void updateProgress(float newProgress) {
+		float delta = newProgress - lastProgress;
 		if (Math.abs(delta) < clipConstant)
-			lastProgress = progress;
+			lastProgress = newProgress;
 		else
 			lastProgress = lastProgress + delta * ImGui.getIO().getDeltaTime() * speed;
+	}
+
+	public void render(String label, ImVec2 size, float progress) {
+		updateProgress(progress);
 		ImGui.progressBar(lastProgress, size, label);
 	}
 
+	public void render(float progress) {
+		updateProgress(progress);
+		ImGui.progressBar(lastProgress);
+	}
+
 }

app/src/main/java/gui/widget/SudokuSelector.java

@@ -35,10 +35,15 @@ public class SudokuSelector {
 
 	private final String confirmMessage;
 
+	private Thread genThread = null;
+
+	private final SmoothProgressBar genProgressBar;
+
 	public SudokuSelector(boolean canGenEmptyGrid, String confirmMessage) {
 		this.canGenEmptyGrid = canGenEmptyGrid;
 		this.confirmMessage = confirmMessage;
 		initConstraints();
+		this.genProgressBar = new SmoothProgressBar();
 	}
 
 	private List<IConstraint> getConstraints() {
@@ -56,16 +61,39 @@ public class SudokuSelector {
 		}
 	}
 
+	private void stopGenThread() {
+		if (this.genThread != null) {
+			this.genThread.interrupt();
+			this.genThread = null;
+		}
+	}
+
+	private void renderGenProgress() {
+		if (ImGui.beginPopup("genProgress")) {
+			ImGui.text("Loading ...");
+			int filled = this.doku.getFilledCells().size();
+			int total = this.doku.getCells().size();
+			this.genProgressBar.render(filled / (float) total);
+			ImGui.endPopup();
+		} else {
+			stopGenThread();
+		}
+	}
+
 	private void selectSudoku(MultiDoku doku, boolean empty) {
 		this.doku = doku;
+		ImGui.openPopup("genProgress");
+		this.genThread = new Thread(() -> {
 			if (!empty) {
 				try {
 					SudokuFactory.fillDoku(doku, Difficulty.values()[difficulty.get()]);
+					this.onSelect.emit(this.doku);
 				} catch (Exception e) {
 					e.printStackTrace();
 				}
 			}
-		this.onSelect.emit(this.doku);
+		});
+		this.genThread.start();
 	}
 
 	public void renderFileDialog() {
@@ -131,7 +159,12 @@ public class SudokuSelector {
 		if (ImGui.button("À partir d'un fichier")) {
 			ImGuiFileDialog.openDialog("browse-sudoku", "Choisissez un fichier", ".json", ".");
 		}
+		renderGenProgress();
 		renderFileDialog();
 	}
 
+	public void clean() {
+		stopGenThread();
+	}
+
 }