In "PostvisualizationWindow", open trajectory file via drag and drop from file explorer.

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 ### Added
 
+- Open a trajectory file in the stand-alone application `vadere-postvis.jar` via drag and drop from file explorer.
 - Scenario elements like obstacles and targets can now be resized using the mouse in the topography creator tab (first, select element via left-click and then move mouse to one of its edges to get the resize handles).
 - Draw also Voronoi diagram in `TikzGenerator`.
 - Added new scenario element `AbsorbingArea` to absorb agents immediately.

VadereGui/resources/messages.properties

@@ -14,6 +14,7 @@ DeleteTestQuestionOne.text=Do you really want to delete this scenario?
 DeleteTestQuestionMultiple.text=Do you really want to delete these scenarios?
 DeleteTestQuestion.title=Delete scenario
 
+Gui.DropAction.Error.text=Cannot import file!
 Error.text=Error.
 Clone.text=clone
 Finished.text=Finished.
@@ -328,7 +329,6 @@ TopographyCreator.btnGenerateIds.tooltip=Generate missing Ids for sources, targe
 
 select_shape_tooltip=Select Shape
 
-
 # tab titles Topography creator / postvis
 Tab.Simulation.title=Simulation
 Tab.Model.title=Model
@@ -374,3 +374,5 @@ RunScenarioTopographyCheckerErrors.text=The simulation can't be started with err
 RunScenarioNotReadyToRun.text=One or more of the selected scenarios isn't ready to run.
 
 ActionEditScenarioDescription.menu.title=Edit description
+
+Data.TrajectoryOrScenarioFile.NoData.text=No trajectory or scenario file found.

VadereGui/resources/messages_de_DE.properties

@@ -13,6 +13,7 @@ DeleteTestQuestionSingle.text=Dieses Szenario wirklich l\u00F6schen?
 DeleteTestQuestionMultiple.text=Diese Szenarios wirklich l\u00F6schen?
 DeleteTestQuestion.title=Szenario l\u00F6schen
 
+Gui.DropAction.Error.text=Datei nicht importierbar! 
 Error.text=Fehler.
 Clone.text=Klon
 Finished.text=Fertig.
@@ -368,3 +369,5 @@ RunScenarioTopographyCheckerErrors.text=Die Simulation kann nicht mit einer fehl
 RunScenarioNotReadyToRun.text=Eines oder mehrere der ausgew\u00e4hlten Szenario sind derzeit nicht lauff\u00e4hig.
 
 ActionEditScenarioDescription.menu.title=Beschreibung bearbeiten
+
+Data.TrajectoryOrScenarioFile.NoData.text=Keine Trajektorien- oder Szenario-Datei gefunden.
\ No newline at end of file

VadereGui/src/org/vadere/gui/postvisualization/view/PostvisualizationWindow.java

@@ -2,6 +2,7 @@ package org.vadere.gui.postvisualization.view;
 
 import com.jgoodies.forms.layout.CellConstraints;
 import com.jgoodies.forms.layout.FormLayout;
+import org.jetbrains.annotations.NotNull;
 import org.vadere.gui.components.control.IViewportChangeListener;
 import org.vadere.gui.components.control.JViewportChangeListener;
 import org.vadere.gui.components.control.PanelResizeListener;
@@ -23,20 +24,26 @@ import org.vadere.util.io.IOUtils;
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.dnd.*;
 import java.awt.event.ActionEvent;
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Observer;
+import java.util.Optional;
+import java.util.prefs.BackingStoreException;
 import java.util.prefs.Preferences;
 
+import java.util.List;
+
 /**
  * Main Window of the new post visualization.
  * 
  * @Version 1.0
  * 
  */
-public class PostvisualizationWindow extends JPanel implements Observer {
+public class PostvisualizationWindow extends JPanel implements Observer, DropTargetListener {
 	private static final long serialVersionUID = -8177132133860336295L;
 	private JToolBar toolbar;
 	private ScenarioPanel scenarioPanel;
@@ -312,6 +319,9 @@ public class PostvisualizationWindow extends JPanel implements Observer {
 		getActionMap().put("deselect", new ActionDeselect(model, this, null));
 		repaint();
 		revalidate();
+
+		// Make "this" window a drop target ("this" also handles the drops).
+		new DropTarget(this, DnDConstants.ACTION_MOVE, this, true);
 	}
 
 	private void buildKeyboardShortcuts() {
@@ -407,4 +417,99 @@ public class PostvisualizationWindow extends JPanel implements Observer {
 			frame.pack();
 		});
 	}
+
+	// Methods for drop support of this window.
+	@Override
+	public void dragEnter(DropTargetDragEvent dtde) {
+
+	}
+
+	@Override
+	public void dragOver(DropTargetDragEvent dtde) {
+
+	}
+
+	@Override
+	public void dropActionChanged(DropTargetDragEvent dtde) {
+
+	}
+
+	@Override
+	public void dragExit(DropTargetEvent dte) {
+
+	}
+
+	@Override
+	public void drop(DropTargetDropEvent dtde) {
+		try{
+			dtde.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
+			List<File> fileList = (List<File>) dtde.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
+
+			// This is a robust solution, but user should be warned if multiple files are dropped.
+			for(File file : fileList){
+				openScenarioAndTrajectoryFile(file);
+			}
+		} catch (Exception ex){
+			JOptionPane.showMessageDialog(
+					this,
+					Messages.getString("Gui.DropAction.Error.text") + "\n"
+							+ ex.getMessage(),
+					Messages.getString("InformationDialogError.title"),
+					JOptionPane.ERROR_MESSAGE);
+		}
+	}
+
+	public void openScenarioAndTrajectoryFile(@NotNull File scenarioOrTrajectoryFile) {
+		resources.setProperty("SettingsDialog.outputDirectory.path", scenarioOrTrajectoryFile.getParent());
+		Preferences.userNodeForPackage(PostVisualisation.class).put("SettingsDialog.outputDirectory.path", scenarioOrTrajectoryFile.getParent());
+
+		try {
+			IOUtils.saveUserPreferences(PostVisualisation.preferencesFilename,
+					Preferences.userNodeForPackage(PostVisualisation.class));
+		} catch (IOException | BackingStoreException e1) {
+			e1.printStackTrace();
+		}
+
+		Runnable runnable = () -> {
+			Player.getInstance(model).stop();
+
+			final JFrame dialog = DialogFactory.createLoadingDialog();
+			dialog.setVisible(true);
+
+			try {
+				Player.getInstance(model).stop();
+
+				File parentDirectory = scenarioOrTrajectoryFile.getParentFile();
+
+				Optional<File> trajectoryFile =
+						IOUtils.getFirstFile(parentDirectory, IOUtils.TRAJECTORY_FILE_EXTENSION);
+				Optional<File> scenarioFile =
+						IOUtils.getFirstFile(parentDirectory, IOUtils.SCENARIO_FILE_EXTENSION);
+
+				if (trajectoryFile.isPresent() && scenarioFile.isPresent()) {
+					Scenario vadereScenario = IOOutput.readScenario(scenarioFile.get().toPath());
+					model.init(IOOutput.readTrajectories(trajectoryFile.get().toPath(), vadereScenario), vadereScenario, trajectoryFile.get().getParent());
+					model.notifyObservers();
+					dialog.dispose();
+				} else {
+					String errorMessage = String.format("%s\n%s\n%s", Messages.getString("Data.TrajectoryOrScenarioFile.NoData.text"),
+							trajectoryFile,
+							scenarioFile);
+					throw new IOException(errorMessage);
+				}
+			} catch (Exception e) {
+				JOptionPane.showMessageDialog(
+						null,
+						e.getMessage(),
+						Messages.getString("InformationDialogFileError"),
+						JOptionPane.ERROR_MESSAGE);
+			}
+
+			// when loading is finished, make frame disappear
+			SwingUtilities.invokeLater(() -> dialog.dispose());
+		};
+
+		new Thread(runnable).start();
+	}
+
 }