gui: select from file

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

@@ -2,6 +2,8 @@ package gui;
 
 import common.Signal;
 import imgui.ImGui;
+import imgui.extension.imguifiledialog.ImGuiFileDialog;
+import imgui.extension.imguifiledialog.flag.ImGuiFileDialogFlags;
 import imgui.type.ImInt;
 import sudoku.structure.Difficulty;
 import sudoku.structure.MultiDoku;
@@ -15,10 +17,10 @@ public class SudokuSelector {
 	private final boolean canGenEmptyGrid;
 
 	private final ImInt sudokuType = new ImInt(0);
-	
+
 	private final ImInt difficulty = new ImInt(Difficulty.Medium.ordinal());
 	private final String[] difficulties;
-	
+
 	private static final String[] sudokuTypes = { "Carré", "Rectangle", "Multidoku" };
 	private static final int SQUARE = 0, RECTANGLE = 1, MULTIDOKU = 2;
 
@@ -48,6 +50,25 @@ public class SudokuSelector {
 		this.onSelect.emit();
 	}
 
+	public void renderFileDialog() {
+		if (ImGuiFileDialog.display("browse-sudoku", ImGuiFileDialogFlags.None)) {
+			if (ImGuiFileDialog.isOk()) {
+				var selection = ImGuiFileDialog.getSelection();
+				for (var entry : selection.entrySet()) {
+					try {
+						String filePath = entry.getValue();
+						this.doku = SudokuFactory.fromfile(filePath);
+						if (this.doku != null)
+							this.onSelect.emit();
+					} catch (Exception e) {
+						e.printStackTrace();
+					}
+				}
+			}
+			ImGuiFileDialog.close();
+		}
+	}
+
 	public void render() {
 		ImGui.combo("Type de Sudoku", sudokuType, sudokuTypes);
 		ImGui.combo("Difficulté", difficulty, difficulties);
@@ -88,6 +109,10 @@ public class SudokuSelector {
 			default:
 				break;
 		}
+		if (ImGui.button("À partir d'un fichier")) {
+			ImGuiFileDialog.openDialog("browse-sudoku", "Choisissez un fichier", ".json", ".");
+		}
+		renderFileDialog();
 	}
 
 	public MultiDoku getDoku() {