revert DockFX

DockFX/src/main/java/org/dockfx/ContentHolder.java

+package org.dockfx;
+
+import java.util.LinkedList;
+import java.util.Properties;
+
+/**
+ * ContentHolder has common functions for storing persistent object for node
+ *
+ * @author HongKee Moon
+ */
+public class ContentHolder
+{
+	/**
+	 * The enum ContentHolder Type.
+	 */
+	public enum Type {
+		/**
+		 * The SplitPane.
+		 */
+		SplitPane,
+		/**
+		 * The TabPane.
+		 */
+		TabPane,
+		/**
+		 * The Collection.
+		 */
+		Collection,
+		/**
+		 * The FloatingNode.
+		 */
+		FloatingNode,
+		/**
+		 * The DockNode.
+		 */
+		DockNode
+	}
+
+	String name;
+	Properties properties;
+	LinkedList children;
+	Type type;
+
+	public ContentHolder()
+	{
+
+	}
+
+	public ContentHolder( String name, Type type )
+	{
+		this.name = name;
+		this.properties = new Properties();
+		this.children = new LinkedList();
+		this.type = type;
+	}
+
+	public void addProperty( Object key, Object value )
+	{
+		properties.put( key, value );
+	}
+
+	public void addChild( Object child )
+	{
+		children.add( child );
+	}
+
+	public String getName()
+	{
+		return name;
+	}
+
+	public void setName( String name )
+	{
+		this.name = name;
+	}
+
+	public Properties getProperties()
+	{
+		return properties;
+	}
+
+	public void setProperties( Properties properties )
+	{
+		this.properties = properties;
+	}
+
+	public LinkedList getChildren()
+	{
+		return children;
+	}
+
+	public void setChildren( LinkedList children )
+	{
+		this.children = children;
+	}
+
+	public Type getType()
+	{
+		return type;
+	}
+
+	public void setType( Type type )
+	{
+		this.type = type;
+	}
+}

DockFX/src/main/java/org/dockfx/DelayOpenHandler.java

+package org.dockfx;
+
+/**
+ * To support the delayed open process for some specific applications, this interface implementation is used.
+ */
+public interface DelayOpenHandler {
+  public DockNode open(String nodeName);
+}

DockFX/src/main/java/org/dockfx/DockEvent.java

@@ -30,7 +30,7 @@ import javafx.scene.Node;
 import javafx.scene.input.PickResult;
 
 /**
- * Base class for DockFX events. Each DockFX event has an associated event source, event target and
+ * Base class for DockFX events. Each DockFX event has associated an event source, event target and
  * an event type. The event source specifies for an event handler the object on which that handler
  * has been registered and which sent the event to it. The event target defines the path through
  * which the event will travel when posted. The event type provides additional classification to

DockFX/src/main/java/org/dockfx/DockTitleBar.java

@@ -21,9 +21,14 @@
 package org.dockfx;
 
 import java.util.HashMap;
-import java.util.List;
 import java.util.Stack;
 
+import com.sun.javafx.stage.StageHelper;
+
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
 import javafx.event.ActionEvent;
 import javafx.event.Event;
 import javafx.event.EventHandler;
@@ -52,15 +57,15 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
   /**
    * The DockNode this node is a title bar for.
    */
-  private DockNode dockNode;
+  private final DockNode dockNode;
   /**
    * The label node used for captioning and the graphic.
    */
-  private Label label;
+  private final Label label;
   /**
    * State manipulation buttons including close, maximize, detach, and restore.
    */
-  private Button closeButton, stateButton;
+  private final Button closeButton, stateButton, minimizeButton;
 
   /**
    * Creates a default DockTitleBar with captions and dragging behavior.
@@ -88,28 +93,67 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
 
     closeButton = new Button();
     closeButton.setOnAction(new EventHandler<ActionEvent>() {
+
       @Override
       public void handle(ActionEvent event) {
         dockNode.close();
       }
     });
-    closeButton.visibleProperty().bind(dockNode.closableProperty());
-
-    // create a pane that will stretch to make the buttons right aligned
-    Pane fillPane = new Pane();
-    HBox.setHgrow(fillPane, Priority.ALWAYS);
-
-    getChildren().addAll(label, fillPane, stateButton, closeButton);
-
+    
+    minimizeButton = new Button();
+    minimizeButton.setOnAction(new EventHandler<ActionEvent>() {
+        @Override
+        public void handle(ActionEvent event) {
+            dockNode.setMinimized(true);
+        }
+    });
+    
     this.addEventHandler(MouseEvent.MOUSE_PRESSED, this);
     this.addEventHandler(MouseEvent.DRAG_DETECTED, this);
     this.addEventHandler(MouseEvent.MOUSE_DRAGGED, this);
     this.addEventHandler(MouseEvent.MOUSE_RELEASED, this);
-
+    
     label.getStyleClass().add("dock-title-label");
     closeButton.getStyleClass().add("dock-close-button");
     stateButton.getStyleClass().add("dock-state-button");
+    minimizeButton.getStyleClass().add("dock-minimize-button");
     this.getStyleClass().add("dock-title-bar");
+
+    // create a pane that will stretch to make the buttons right aligned
+    Pane fillPane = new Pane();
+    HBox.setHgrow(fillPane, Priority.ALWAYS);
+
+    dockNode.closableProperty().addListener( new ChangeListener< Boolean >()
+    {
+      @Override public void changed( ObservableValue< ? extends Boolean > observable, Boolean oldValue, Boolean newValue )
+      {
+        if(newValue)
+        {
+          if(!getChildren().contains( closeButton ))
+            getChildren().add( closeButton );
+        }
+        else
+        {
+          getChildren().removeIf( c -> c.equals( closeButton ) );
+        }
+      }
+    } );
+
+    dockNode.minimizableProperty().addListener( new ChangeListener< Boolean >()
+    {
+      @Override public void changed( ObservableValue< ? extends Boolean > observable, Boolean oldValue, Boolean newValue )
+      {
+        if(newValue)
+        {
+          getChildren().add(2, minimizeButton);
+        }
+        else
+        {
+          getChildren().remove( minimizeButton );
+        }
+      }
+    } );
+    getChildren().addAll( label, fillPane, stateButton, closeButton );
   }
 
   /**
@@ -149,6 +193,15 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
   public final Button getStateButton() {
     return stateButton;
   }
+  
+  /**
+   * The button used for minimizing this title bar and its associated dock node.
+   *
+   * @return The button used for minimizing this title bar and its associated dock node.
+   */
+  public final Button getMinimizeButton() {
+    return minimizeButton;
+  }
 
   /**
    * The dock node that is associated with this title bar.
@@ -225,14 +278,10 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
     // RFE for public scene graph traversal API filed but closed:
     // https://bugs.openjdk.java.net/browse/JDK-8133331
 
-    List<DockPane> dockPanes = DockPane.dockPanes;
-
+    ObservableList<Stage> stages =
+        FXCollections.unmodifiableObservableList(StageHelper.getStages());
     // fire the dock over event for the active stages
-    for (DockPane dockPane : dockPanes) {
-      Window window = dockPane.getScene().getWindow();
-      if (!(window instanceof Stage)) continue;
-      Stage targetStage = (Stage) window;
-
+    for (Stage targetStage : stages) {
       // obviously this title bar does not need to receive its own events
       // though users of this library may want to know when their
       // dock node is being dragged by subclassing it or attaching
@@ -303,7 +352,7 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
         // then we need to offset the stage position by
         // the height of this title bar
         if (!dockNode.isCustomTitleBar() && dockNode.isDecorated()) {
-          dockNode.setFloating(true, new Point2D(0, DockTitleBar.this.getHeight()));
+          dockNode.setFloating(true, new Point2D(0, DockTitleBar.this.getHeight()), null);
         } else {
           dockNode.setFloating(true);
         }
@@ -355,6 +404,12 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
       Stage stage = dockNode.getStage();
       Insets insetsDelta = this.getDockNode().getBorderPane().getInsets();
 
+      // it is possible that drag start has not been set if some other node had focus when
+      // we started the drag
+      if (null == dragStart) {
+        dragStart = new Point2D(event.getX(), event.getY());
+      }
+      
       // dragging this way makes the interface more responsive in the event
       // the system is lagging as is the case with most current JavaFX
       // implementations on Linux
@@ -364,13 +419,13 @@ public class DockTitleBar extends HBox implements EventHandler<MouseEvent> {
       // TODO: change the pick result by adding a copyForPick()
       DockEvent dockEnterEvent =
           new DockEvent(this, DockEvent.NULL_SOURCE_TARGET, DockEvent.DOCK_ENTER, event.getX(),
-              event.getY(), event.getScreenX(), event.getScreenY(), null);
+              event.getY(), event.getScreenX(), event.getScreenY(), null, this.getDockNode());
       DockEvent dockOverEvent =
           new DockEvent(this, DockEvent.NULL_SOURCE_TARGET, DockEvent.DOCK_OVER, event.getX(),
-              event.getY(), event.getScreenX(), event.getScreenY(), null);
+              event.getY(), event.getScreenX(), event.getScreenY(), null, this.getDockNode());
       DockEvent dockExitEvent =
           new DockEvent(this, DockEvent.NULL_SOURCE_TARGET, DockEvent.DOCK_EXIT, event.getX(),
-              event.getY(), event.getScreenX(), event.getScreenY(), null);
+              event.getY(), event.getScreenX(), event.getScreenY(), null, this.getDockNode());
 
       EventTask eventTask = new EventTask() {
         @Override

DockFX/src/main/java/org/dockfx/demo/DockFX.java

@@ -21,32 +21,35 @@
 
 package org.dockfx.demo;
 
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.Random;
 
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.event.ActionEvent;
+import javafx.event.EventHandler;
+import javafx.scene.control.Menu;
+import javafx.scene.control.MenuBar;
+import javafx.scene.control.MenuItem;
+import javafx.scene.layout.BorderPane;
 import org.dockfx.DockNode;
 import org.dockfx.DockPane;
 import org.dockfx.DockPos;
 
 import javafx.application.Application;
 import javafx.scene.Scene;
-import javafx.scene.control.Button;
-import javafx.scene.control.Menu;
-import javafx.scene.control.MenuBar;
-import javafx.scene.control.Separator;
 import javafx.scene.control.Tab;
 import javafx.scene.control.TabPane;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
-import javafx.scene.control.ToolBar;
 import javafx.scene.control.TreeItem;
 import javafx.scene.control.TreeView;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
-import javafx.scene.layout.Priority;
-import javafx.scene.layout.VBox;
+import javafx.scene.layout.AnchorPane;
 import javafx.scene.web.HTMLEditor;
 import javafx.stage.Stage;
 
@@ -99,50 +102,63 @@ public class DockFX extends Application {
     DockNode tabsDock = new DockNode(tabs, "Tabs Dock", new ImageView(dockImage));
     tabsDock.setPrefSize(300, 100);
     tabsDock.dock(dockPane, DockPos.TOP);
-    DockNode tableDock = new DockNode(tableView);
-    // let's disable our table from being undocked
-    tableDock.setDockTitleBar(null);
+
+    DockNode tableDock = new DockNode(tableView, "Table");
     tableDock.setPrefSize(300, 100);
     tableDock.dock(dockPane, DockPos.BOTTOM);
 
-    final Menu menu1 = new Menu("File");
-    final Menu menu2 = new Menu("Options");
-    final Menu menu3 = new Menu("Help");
-
-    MenuBar menuBar = new MenuBar();
-    menuBar.getMenus().addAll(menu1, menu2, menu3);
-
-    ToolBar toolBar = new ToolBar(
-        new Button("New"),
-        new Button("Open"),
-        new Button("Save"),
-        new Separator(),
-        new Button("Clean"),
-        new Button("Compile"),
-        new Button("Run"),
-        new Separator(),
-        new Button("Debug"),
-        new Button("Profile")
-    );
-
-    VBox vbox = new VBox();
-    vbox.getChildren().addAll(menuBar, toolBar, dockPane);
-    VBox.setVgrow(dockPane, Priority.ALWAYS);
-
-    primaryStage.setScene(new Scene(vbox, 800, 500));
+    MenuItem saveMenuItem = new MenuItem("Save");
+    saveMenuItem.setOnAction(new EventHandler<ActionEvent>() {
+      @Override
+      public void handle(ActionEvent event) {
+        if(dirExist(getUserDataDirectory()))
+          dockPane.storePreference(getUserDataDirectory() + "dock.pref");
+      }
+    });
+
+    MenuItem restoreMenuItem = new MenuItem("Restore");
+    restoreMenuItem.setOnAction(new EventHandler<ActionEvent>() {
+      @Override
+      public void handle(ActionEvent event) {
+        dockPane.loadPreference(getUserDataDirectory() + "dock.pref");
+      }
+    });
+
+    Menu fileMenu = new Menu("File");
+    MenuBar menuBar = new MenuBar(fileMenu);
+    fileMenu.getItems().addAll(saveMenuItem, restoreMenuItem);
+
+    BorderPane mainBorderPane = new BorderPane();
+    mainBorderPane.setTop(menuBar);
+    mainBorderPane.setCenter(dockPane);
+    
+    // show that overlays are relative to the docking area
+    mainBorderPane.setLeft(new AnchorPane(generateRandomTree()));
+    
+    primaryStage.setScene(new Scene(mainBorderPane, 800, 500));
     primaryStage.sizeToScene();
 
     primaryStage.show();
 
     // can be created and docked before or after the scene is created
     // and the stage is shown
-    DockNode treeDock = new DockNode(generateRandomTree(), "Tree Dock", new ImageView(dockImage));
+    DockNode treeDock = new DockNode(generateRandomTree(), "Tree Dock1", new ImageView(dockImage));
     treeDock.setPrefSize(100, 100);
     treeDock.dock(dockPane, DockPos.LEFT);
-    treeDock = new DockNode(generateRandomTree(), "Tree Dock", new ImageView(dockImage));
+    treeDock = new DockNode(generateRandomTree(), "Tree Dock2", new ImageView(dockImage));
     treeDock.setPrefSize(100, 100);
     treeDock.dock(dockPane, DockPos.RIGHT);
 
+	// If you want to get notified when the docknode is closed. You can add ChangeListener to DockNode's closedProperty()
+	treeDock.closedProperty().addListener( new ChangeListener< Boolean >()
+	{
+		@Override public void changed( ObservableValue< ? extends Boolean > observable, Boolean oldValue, Boolean newValue )
+		{
+			if(newValue)
+				System.out.println("TreeDock(DockPos.RIGHT) is closed.");
+		}
+	} );
+
     // test the look and feel with both Caspian and Modena
     Application.setUserAgentStylesheet(Application.STYLESHEET_MODENA);
     // initialize the default styles for the dock pane and undocked nodes using the DockFX
@@ -175,4 +191,23 @@ public class DockFX extends Application {
 
     return treeView;
   }
+
+  public static boolean dirExist(String dir)
+  {
+    String path = getUserDataDirectory();
+    if(!new File(path).exists())
+      return new File(path).mkdirs();
+    else
+      return true;
+  }
+
+  public static String getUserDataDirectory() {
+    return System.getProperty("user.home") + File.separator + ".dockfx" + File.separator
+           + getApplicationVersionString() + File.separator;
+  }
+
+  public static String getApplicationVersionString() {
+    return "1.0";
+  }
+
 }

DockFX/src/main/java/org/dockfx/demo/TwoDockPanes.java

+/**
+ * @file DockFX.java
+ * @brief Driver demonstrating basic dock layout with prototypes. Maintained in a separate package
+ *        to ensure the encapsulation of org.dockfx private package members.
+ *
+ * @section License
+ *
+ *          This file is a part of the DockFX Library. Copyright (C) 2015 Robert B. Colton
+ *
+ *          This program is free software: you can redistribute it and/or modify it under the terms
+ *          of the GNU Lesser General Public License as published by the Free Software Foundation,
+ *          either version 3 of the License, or (at your option) any later version.
+ *
+ *          This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ *          WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *          PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ *          You should have received a copy of the GNU Lesser General Public License along with this
+ *          program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+package org.dockfx.demo;
+
+
+import org.dockfx.DockPane;
+
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+import javafx.scene.control.TextArea;
+import javafx.scene.control.ToolBar;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.Priority;
+import javafx.scene.layout.VBox;
+import javafx.stage.Stage;
+import org.dockfx.DockNode;
+import org.dockfx.DockPos;
+
+/**
+ * This app creates two dock panes, one over the other. Nodes can be added to either.
+ * If dock pane A is "exclusive", then A will ignore nodes from B (because A is 
+ * exclusive and won't accept nodes from any other dockpane, and B will ignore nodes
+ * from A because A is exclusive and won't let go of them.
+ * 
+ * If neither A or B is exclusive, Issue #24 from RobertBColton/DockFX will occur. 
+ * @author will
+ */
+public class TwoDockPanes extends Application {
+
+  public static void main(String[] args) {
+    launch(args);
+  }
+
+  private VBox vbox;
+  private DockPane dp1;
+  private DockPane dp2;
+  private int counter = 0;
+  private final Image dockImage = 
+    new Image(DockFX.class.getResource("docknode.png").toExternalForm());
+
+  @SuppressWarnings("unchecked")
+  @Override
+  public void start(Stage primaryStage) {
+    primaryStage.setTitle("DockFX");
+   
+    vbox = new VBox();
+
+    dp1 = makeDockPane("A");
+    dp2 = makeDockPane("B");
+
+    dp1.setExclusive(true);
+    
+
+    primaryStage.setScene(new Scene(vbox, 800, 500));
+    primaryStage.sizeToScene();
+    primaryStage.show();
+
+    // test the look and feel with both Caspian and Modena
+    Application.setUserAgentStylesheet(Application.STYLESHEET_MODENA);
+    DockPane.initializeDefaultUserAgentStylesheet();
+  }
+
+  private DockPane makeDockPane(String name) {
+    ToolBar bar = new ToolBar();
+    Label lab = new Label(name);
+    Button addButton = new Button("Add");
+    bar.getItems().add(lab);
+    bar.getItems().add(addButton);
+
+    DockPane dp = new DockPane();
+    VBox.setVgrow(dp, Priority.ALWAYS);
+
+    addButton.setOnAction(evt -> addNode(dp, name));
+
+    vbox.getChildren().add(bar);
+    vbox.getChildren().add(dp);
+
+    return dp;
+  }
+
+  private void addNode(DockPane dp, String dockName) {
+    int n = ++counter;
+    String title = dockName + "Node " + counter;
+    TextArea ta = new TextArea();
+    ta.setText(title + "\n\nJust some test data"); 
+    DockNode dn = new DockNode(ta, title, new ImageView(dockImage));
+    dn.dock(dp, DockPos.BOTTOM);
+  }
+
+
+}

DockFX/src/main/java/org/dockfx/pane/ContentPane.java

+package org.dockfx.pane;
+
+import org.dockfx.DockPos;
+
+import java.util.List;
+import java.util.Stack;
+
+import javafx.scene.Node;
+import javafx.scene.Parent;
+
+/**