Try to improve mapsforge auto file detection.

src/main/org/insa/graph/io/Openfile.java

@@ -1,83 +0,0 @@
-package org.insa.graph.io ;
-
-import java.io.* ;
-import java.util.zip.* ;
-
-/**
- *  Class that can be used to open (compressed) files from a specified
- *  set of folders or for a full path.
- *  
- */
-public class Openfile {
-
-	/**
-	 * These folders will be looked up for the files.
-	 * 
-	 */
-	private static final String[] datadirs = {
-			
-		// INSA folder containing maps.
-		"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/Maps",
-
-		// INSA folder containing paths.
-		"/home/commetud/3eme Annee MIC/Graphes-et-Algorithmes/",
-
-		// Maps sub-folder.
-		"Maps", 
-		
-		// Current folder.
-		"."
-	};
-
-	/**
-	 * Available extensions.
-	 * 
-	 */
-	private static final String[] extensions = { ".map", ".gz", ".map.gz", ".path", ".path.gz", "" };
-
-	/** 
-	 * Open the given file and return a corresponding DataInputStream.
-	 * 
-	 * @param filename Name of the file to open (without extension) or full path to the given file.
-	 * @throws IOException 
-	 */
-	public static DataInputStream open(String filename) throws IOException {
-
-		File file = null;
-		String fullpath = null;
-		
-		// If the filename containing only a name (not a path):
-		if (filename.equals (new File(filename).getName())) {
-
-	
-			for (String ext: extensions) {
-				String fname = filename + ext;
-				for (int index = 0; file == null && index < datadirs.length; ++index) {
-					fullpath = datadirs[index] + File.separator + fname;
-					file = new File(fullpath);
-					if (!file.exists()) {
-						file = null;
-					}
-				}
-			}
-			
-		}
-		else {
-			fullpath = filename;
-			file = new File(filename);
-		}
-			
-		InputStream fileInput = new FileInputStream(new File(fullpath));
-
-		// If the file is compressed.
-		if (fullpath.endsWith(".gz")) {
-			fileInput = new GZIPInputStream(fileInput) ;
-		}
-		else {
-			fileInput = new BufferedInputStream(fileInput) ;
-		}
-
-		return new DataInputStream(fileInput) ;
-	}
-
-}

src/main/org/insa/graphics/MainWindow.java

@@ -11,10 +11,12 @@ import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
+import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintStream;
@@ -61,11 +63,12 @@ import org.insa.graph.io.BinaryPathReader;
 import org.insa.graph.io.BinaryPathWriter;
 import org.insa.graph.io.GraphReader;
 import org.insa.graph.io.MapMismatchException;
-import org.insa.graph.io.Openfile;
 import org.insa.graphics.ShortestPathPanel.StartActionEvent;
 import org.insa.graphics.drawing.BasicDrawing;
+import org.insa.graphics.drawing.BasicGraphPalette;
 import org.insa.graphics.drawing.BlackAndWhiteGraphPalette;
 import org.insa.graphics.drawing.Drawing;
+import org.insa.graphics.drawing.GraphPalette;
 import org.insa.graphics.drawing.MapViewDrawing;
 import org.insa.graphics.drawing.overlays.PathOverlay;
 
@@ -89,11 +92,13 @@ public class MainWindow extends JFrame {
     // Current graph.
     protected Graph graph;
 
-    // Current loaded path.
+    // Path to the last opened graph file.
-    // private Path currentPath;
+    private String graphFilePath;
 
     // Drawing and click adapter.
     protected Drawing drawing;
+    private MapViewDrawing mapViewDrawing;
+    private BasicDrawing basicDrawing;
 
     // Main panel.
     private JSplitPane mainPanel;
@@ -133,7 +138,10 @@ public class MainWindow extends JFrame {
         setLayout(new BorderLayout());
 
         // Create drawing and action listeners...
-        this.drawing = new BasicDrawing();
+        this.basicDrawing = new BasicDrawing();
+        this.mapViewDrawing = new MapViewDrawing();
+
+        this.drawing = this.basicDrawing;
 
         spPanel = new ShortestPathPanel(MainWindow.this);
         spPanel.addStartActionListener(new ActionListener() {
@@ -158,6 +166,9 @@ public class MainWindow extends JFrame {
         });
         spPanel.setVisible(false);
 
+        basicDrawing.addDrawingClickListener(spPanel.nodesInputPanel);
+        mapViewDrawing.addDrawingClickListener(spPanel.nodesInputPanel);
+
         this.currentThread = new ThreadWrapper(this);
         this.baf = new BlockingActionFactory(this);
         this.baf.addAction(currentThread);
@@ -359,23 +370,76 @@ public class MainWindow extends JFrame {
     }
 
     private void addDrawingClickListeners() {
-        drawing.addDrawingClickListener(spPanel.nodesInputPanel);
     }
 
-    private void updateDrawing(Class<? extends Drawing> newClass) {
+    /**
+     * Draw the stored graph on the drawing.
+     */
+    private void drawGraph(Class<? extends Drawing> newClass, GraphPalette palette) {
+        // Save old divider location
         int oldLocation = mainPanel.getDividerLocation();
+
+        boolean isNewGraph = newClass == null;
+        boolean isMapView = (isNewGraph && drawing == mapViewDrawing)
+                || (!isNewGraph && newClass.equals(MapViewDrawing.class));
+
+        // We need to draw MapView, we have to check if the file exists.
+        File mfile = null;
+        if (isMapView) {
+            String mfpath = graphFilePath.substring(0, graphFilePath.lastIndexOf(".map")) + ".mapfg";
+            mfile = new File(mfpath);
+            if (!mfile.exists()) {
+                if (JOptionPane.showConfirmDialog(this,
+                        "The associated mapsforge (.mapfg) file has not been found, do you want to specify it manually?",
+                        "File not found", JOptionPane.YES_NO_CANCEL_OPTION) == JOptionPane.YES_OPTION) {
+                    JFileChooser chooser = new JFileChooser(mfile.getParentFile());
+                    if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
+                        mfile = chooser.getSelectedFile();
+                    }
+                    else {
+                        mfile = null;
+                    }
+                }
+                else {
+                    mfile = null;
+                }
+            }
+        }
+
+        if (isMapView && mfile != null) {
+            // It is a mapview drawing and the file was found, so:
+            // 1. We create the drawing if necessary.
+            if (drawing != mapViewDrawing) {
                 drawing.clear();
-        if (drawing == null || !newClass.isInstance(drawing)) {
+                drawing = mapViewDrawing;
-            try {
+                mainPanel.setLeftComponent(mapViewDrawing);
-                drawing = newClass.newInstance();
-            }
-            catch (InstantiationException | IllegalAccessException e) {
-                e.printStackTrace();
-            }
-            addDrawingClickListeners();
-            mainPanel.setLeftComponent((Component) drawing);
                 mainPanel.setDividerLocation(oldLocation);
             }
+
+            // 2. We draw the graph.
+            drawing.clear();
+            ((MapViewDrawing) drawing).drawGraph(mfile);
+        }
+        else if (!isMapView || (isMapView && mfile == null && isNewGraph)) {
+            if (drawing == mapViewDrawing) {
+                mapViewDrawing.clear();
+                drawing = basicDrawing;
+                addDrawingClickListeners();
+                mainPanel.setLeftComponent(basicDrawing);
+                mainPanel.setDividerLocation(oldLocation);
+            }
+            drawing.clear();
+            drawing.drawGraph(graph, palette);
+        }
+
+    }
+
+    private void drawGraph(Class<? extends Drawing> newClass) {
+        drawGraph(newClass, new BasicGraphPalette());
+    }
+
+    private void drawGraph() {
+        drawGraph(null, new BasicGraphPalette());
     }
 
     private JMenuBar createMenuBar() {
@@ -398,7 +462,8 @@ public class MainWindow extends JFrame {
                             String path = chooser.getSelectedFile().getAbsolutePath();
                             DataInputStream stream;
                             try {
-                                stream = Openfile.open(path);
+                                stream = new DataInputStream(
+                                        new BufferedInputStream(new FileInputStream(chooser.getSelectedFile())));
                             }
                             catch (IOException e1) {
                                 JOptionPane.showMessageDialog(MainWindow.this, "Cannot open the selected file.");
@@ -420,8 +485,11 @@ public class MainWindow extends JFrame {
                                 exception.printStackTrace(System.out);
                                 return;
                             }
-                            drawing.clear();
+
-                            drawing.drawGraph(graph);
+                            // Save file path.
+                            graphFilePath = path;
+
+                            drawGraph();
 
                             for (JMenuItem item: graphLockItems) {
                                 item.setEnabled(true);
@@ -447,7 +515,8 @@ public class MainWindow extends JFrame {
                 if (chooser.showOpenDialog(MainWindow.this) == JFileChooser.APPROVE_OPTION) {
                     BinaryPathReader reader;
                     try {
-                        reader = new BinaryPathReader(Openfile.open(chooser.getSelectedFile().getAbsolutePath()));
+                        reader = new BinaryPathReader(new DataInputStream(
+                                new BufferedInputStream(new FileInputStream(chooser.getSelectedFile()))));
                     }
                     catch (IOException e1) {
                         JOptionPane.showMessageDialog(MainWindow.this, "Cannot open the selected file.");
@@ -497,8 +566,7 @@ public class MainWindow extends JFrame {
                 launchThread(new Runnable() {
                     @Override
                     public void run() {
-                        updateDrawing(BasicDrawing.class);
+                        drawGraph(BasicDrawing.class);
-                        drawing.drawGraph(graph);
                     }
                 });
             }
@@ -512,8 +580,7 @@ public class MainWindow extends JFrame {
                 launchThread(new Runnable() {
                     @Override
                     public void run() {
-                        updateDrawing(BasicDrawing.class);
+                        drawGraph(BasicDrawing.class, new BlackAndWhiteGraphPalette());
-                        drawing.drawGraph(graph, new BlackAndWhiteGraphPalette());
                     }
                 });
             }
@@ -527,8 +594,7 @@ public class MainWindow extends JFrame {
                 launchThread(new Runnable() {
                     @Override
                     public void run() {
-                        updateDrawing(MapViewDrawing.class);
+                        drawGraph(MapViewDrawing.class);
-                        drawing.drawGraph(graph);
                     }
                 });
             }

src/main/org/insa/graphics/drawing/MapViewDrawing.java

@@ -3,13 +3,8 @@ package org.insa.graphics.drawing;
 import java.awt.Color;
 import java.io.File;
 import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
 import java.util.UUID;
 
-import javax.swing.JFileChooser;
-import javax.swing.filechooser.FileNameExtensionFilter;
-
 import org.insa.graph.Arc;
 import org.insa.graph.Graph;
 import org.insa.graph.Path;
@@ -141,41 +136,6 @@ public class MapViewDrawing extends MapView implements Drawing {
         model.setFixedTileSize(this.tileSize);
     }
 
-    /**
-     * 
-     * @param color
-     * @return
-     */
-    private File getMapsforgeFileFromGraph(Graph graph) {
-        // TODO: Find a way to change this...
-        Map<Integer, String> idToNames = new HashMap<Integer, String>();
-        idToNames.put(0x100, "insa");
-        idToNames.put(0x110, "paris");
-        idToNames.put(0x200, "mayotte");
-        idToNames.put(0x250, "newzealand");
-        idToNames.put(0x300, "reunion");
-        idToNames.put(0x400, "midip");
-        idToNames.put(0x410, "morbihan");
-
-        File file = null;
-        if (idToNames.containsKey(graph.getMapId())) {
-            file = new File("Maps/" + idToNames.get(graph.getMapId()) + ".mapfg");
-            if (!file.exists()) {
-                file = new File("Maps/new/" + idToNames.get(graph.getMapId()) + ".mapfg");
-            }
-        }
-
-        if (file == null || !file.exists()) {
-            JFileChooser fileChooser = new JFileChooser("Maps/");
-            fileChooser.setFileFilter(new FileNameExtensionFilter("mapsforge files", "" + "mapfg"));
-            if (fileChooser.showOpenDialog(this.getParent()) == JFileChooser.APPROVE_OPTION) {
-                file = fileChooser.getSelectedFile();
-            }
-        }
-
-        return file;
-    }
-
     protected LatLong convertPoint(Point point) {
         return new LatLong(point.getLatitude(), point.getLongitude());
     }
@@ -235,10 +195,7 @@ public class MapViewDrawing extends MapView implements Drawing {
         // TODO:
     }
 
-    @Override
+    public void drawGraph(File file) {
-    public void drawGraph(Graph graph, GraphPalette palette) {
-
-        File graphFile = getMapsforgeFileFromGraph(graph);
 
         // Tile cache
         TileCache tileCache = AwtUtil.createTileCache(tileSize, getModel().frameBufferModel.getOverdrawFactor(), 1024,
@@ -247,7 +204,7 @@ public class MapViewDrawing extends MapView implements Drawing {
         // Layers
         Layers layers = getLayerManager().getLayers();
 
-        MapDataStore mapDataStore = new MapFile(graphFile);
+        MapDataStore mapDataStore = new MapFile(file);
         TileRendererLayer tileRendererLayer = createTileRendererLayer(tileCache, mapDataStore,
                 getModel().mapViewPosition, null);
         layers.add(tileRendererLayer);
@@ -261,6 +218,11 @@ public class MapViewDrawing extends MapView implements Drawing {
         }
     }
 
+    @Override
+    public void drawGraph(Graph graph, GraphPalette palette) {
+        // TODO: Unimplemented for now...
+    }
+
     @Override
     public void drawGraph(Graph graph) {
         drawGraph(graph, null);

src/test/org/insa/graph/io/BinaryGraphReaderTest.java

@@ -2,6 +2,9 @@ package org.insa.graph.io;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
+import java.io.BufferedInputStream;
+import java.io.DataInputStream;
+import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.List;
 
@@ -20,7 +23,8 @@ public class BinaryGraphReaderTest {
 
     @BeforeAll
     static void initAll() throws IOException {
-        BinaryGraphReader reader = new BinaryGraphReader(Openfile.open("midip"));
+        BinaryGraphReader reader = new BinaryGraphReader(
+                new DataInputStream(new BufferedInputStream(new FileInputStream("Maps/midip.map"))));
         midip = reader.read();
     }