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;
@@ -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() {

app/src/main/java/sudoku/structure/SudokuFactory.java

@@ -1,5 +1,8 @@
 package sudoku.structure;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -10,6 +13,7 @@ import sudoku.constraint.BlockConstraint;
 import sudoku.constraint.ColumnConstraint;
 import sudoku.constraint.IConstraint;
 import sudoku.constraint.LineConstraint;
+import sudoku.io.SudokuSerializer;
 import sudoku.solver.Solver;
 
 public class SudokuFactory {
@@ -148,7 +152,7 @@ public class SudokuFactory {
 		}
 
 		return false;
-    }
+	}
 
 	/**
 	 * Créée un Sudoku vide dont les Blocks sont de taille widthBlock par heightBlock.
@@ -246,4 +250,15 @@ public class SudokuFactory {
 		}
 		doku.setFilledCellsImmutable();
 	}
+
+	public static MultiDoku fromfile(String filePath) {
+		try {
+			String content = Files.readString(Paths.get(filePath));
+			MultiDoku doku = SudokuSerializer.deserializeSudoku(content);
+			return doku;
+		} catch (IOException e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
 }