#10 Draggable tabs by @gforman44

jfxutils-examples/src/main/java/org/gillius/jfxutils/examples/DemoDragTabs.java

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+/*
+ * Copyright 2013 Jason Winnebeck
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.gillius.jfxutils.examples;
+
+import javafx.application.Application;
+import javafx.geometry.Insets;
+import javafx.scene.Scene;
+import javafx.scene.control.Label;
+import javafx.scene.control.Tab;
+import javafx.scene.control.TabPane;
+import javafx.scene.layout.BorderPane;
+import javafx.stage.Stage;
+import org.gillius.jfxutils.tab.TabUtil;
+
+/**
+ * Demonstrate draggable Tabs from one TabPane to another, allowing the user to rearrange their GUI layout.
+ *
+ * Note:  For this to work, instead of using new Tab("Label") you should use
+ * <pre>
+ * t = new Tab();
+ * t.setGraphic(new Label("Label"));
+ *
+ * @author gforman44
+ */
+public class DemoDragTabs extends Application {
+	private static Tab makeTab( String tabName, String tabContentDummy) {
+		Tab t = new Tab();
+		t.setGraphic(new Label(tabName)); // NOTE: must use setGraphic for this, not just a text label
+		t.setContent(new Label(tabContentDummy));
+		TabUtil.makeDraggable(t); ///////////////// see
+		return t;
+	}
+
+	@Override
+	public void start(Stage primaryStage) {
+
+		Tab f = makeTab("Files", "File system view here");
+		Tab t = makeTab("Type Hierarchy","Type hierarchy view here");
+		Tab d = makeTab("Debug","Debug view here");
+
+		Tab p = makeTab("Properties","Ah, the ubiquitous 'properties' panel");
+		Tab c = makeTab("Console","Console output here");
+		Tab o = makeTab("Outline","Outline of fields/methods view here");
+
+		TabPane left = new TabPane(f,t,d);
+		TabUtil.makeDroppable(left); //////////////// see
+
+		TabPane right = new TabPane(p,c,o);
+		TabUtil.makeDroppable(right); /////////////// see
+
+		left.setStyle("-fx-border-color: black;");
+		right.setStyle("-fx-border-color: black;");
+
+		BorderPane main = new BorderPane();
+		main.setPadding(new Insets(0, 20, 0, 20));
+		main.setTop(new Label("Menubar and toolbars"));
+		main.setLeft(left);
+		main.setCenter(new Label("Central work area here"));
+		main.setRight(right);
+		main.setBottom(new Label("Statusbar"));
+
+		primaryStage.setScene(new Scene(main, 800, 600));
+		primaryStage.show();
+	}
+
+	public static void main(String[] args) {
+		launch(args);
+	}
+}

jfxutils/src/main/java/org/gillius/jfxutils/tab/TabUtil.java

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+/*
+ * Copyright 2013 Jason Winnebeck
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.gillius.jfxutils.tab;
+
+import javafx.event.EventHandler;
+import javafx.scene.control.Label;
+import javafx.scene.control.Tab;
+import javafx.scene.control.TabPane;
+import javafx.scene.input.*;
+
+/**
+ * @author gforman44
+ */
+public class TabUtil {
+	public static final DataFormat TAB_TYPE = new DataFormat("nonserializableObject/JfxTab");
+
+	public static Tab newDraggableTab(String label) {
+		Tab rr = new Tab();
+		rr.setGraphic(new Label(label));
+		makeDraggable(rr);
+		return rr;
+	}
+
+	/** global for drag-n-drop of non-serializable type */
+	private static Tab dndTab;
+
+	public static void makeDraggable( final Tab tab) {
+		tab.getGraphic().setOnDragDetected( new EventHandler<MouseEvent>() {
+			@Override
+			public void handle( MouseEvent event ) {
+				Dragboard dragboard = tab.getGraphic().startDragAndDrop( TransferMode.MOVE );
+				ClipboardContent clipboardContent = new ClipboardContent();
+				clipboardContent.put( TAB_TYPE, 1 );
+				dndTab = tab;
+				dragboard.setContent( clipboardContent );
+				event.consume();
+			}
+		} );
+	}
+
+	public static void makeDroppable( final TabPane tabPane) {
+		tabPane.setOnDragOver( new EventHandler<DragEvent>() {
+			@Override
+			public void handle( DragEvent event ) {
+				if ( event.getDragboard().hasContent( TAB_TYPE )
+						&& dndTab.getTabPane() != tabPane ) {// && different from source location
+					event.acceptTransferModes( TransferMode.MOVE );
+					event.consume();
+				}
+			}
+		} );
+		tabPane.setOnDragDropped( new EventHandler<DragEvent>() {
+			@Override
+			public void handle( DragEvent event ) {
+				if ( event.getDragboard().hasContent( TAB_TYPE )
+						&& dndTab.getTabPane() != tabPane ) {// && different from source location
+					dndTab.getTabPane().getTabs().remove( dndTab );
+					tabPane.getTabs().add( dndTab );
+					event.setDropCompleted( true );
+					event.consume();
+				}
+			}
+		} );
+	}
+}