Example usage for javafx.scene.control TreeItem TreeItem

Introduction

In this page you can find the example usage for javafx.scene.control TreeItem TreeItem.

Prototype

public TreeItem(final T value) 

Source Link

Document

Creates a TreeItem with the value property set to the provided object.

Usage

From source file:Main.java

@Override
public void start(Stage primaryStage) {
    TreeItem<String> rootItem = new TreeItem<>("Root");
    rootItem.setExpanded(true);//from www  . j av a  2 s. c o  m

    TreeItem<String> item = new TreeItem<>("A");
    rootItem.getChildren().add(item);

    item = new TreeItem<>("B");
    rootItem.getChildren().add(item);

    TreeView<String> tree = new TreeView<>(rootItem);
    StackPane root = new StackPane();
    root.getChildren().add(tree);
    primaryStage.setScene(new Scene(root, 300, 250));
    primaryStage.show();
}

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From source file:Main.java

private TreeItem<File> createNode(final File f) {
    return new TreeItem<File>(f) {
        private boolean isLeaf;
        private boolean isFirstTimeChildren = true;
        private boolean isFirstTimeLeaf = true;

        @Override/* w  w  w .j  av a  2s .c om*/
        public ObservableList<TreeItem<File>> getChildren() {
            if (isFirstTimeChildren) {
                isFirstTimeChildren = false;
                super.getChildren().setAll(buildChildren(this));
            }
            return super.getChildren();
        }

        @Override
        public boolean isLeaf() {
            if (isFirstTimeLeaf) {
                isFirstTimeLeaf = false;
                File f = (File) getValue();
                isLeaf = f.isFile();
            }
            return isLeaf;
        }

        private ObservableList<TreeItem<File>> buildChildren(TreeItem<File> TreeItem) {
            File f = TreeItem.getValue();
            if (f == null) {
                return FXCollections.emptyObservableList();
            }
            if (f.isFile()) {
                return FXCollections.emptyObservableList();
            }
            File[] files = f.listFiles();
            if (files != null) {
                ObservableList<TreeItem<File>> children = FXCollections.observableArrayList();
                for (File childFile : files) {
                    children.add(createNode(childFile));
                }
                return children;
            }
            return FXCollections.emptyObservableList();
        }
    };
}

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From source file:Main.java

private TreeItem<File> createNode(final File f) {
    return new TreeItem<File>(f) {
        private boolean isLeaf;
        private boolean isFirstTimeChildren = true;
        private boolean isFirstTimeLeaf = true;

        @Override/*from   ww w .  ja v  a2s.  c o m*/
        public ObservableList<TreeItem<File>> getChildren() {
            if (isFirstTimeChildren) {
                isFirstTimeChildren = false;
                super.getChildren().setAll(buildChildren(this));
            }
            return super.getChildren();
        }

        @Override
        public boolean isLeaf() {
            if (isFirstTimeLeaf) {
                isFirstTimeLeaf = false;
                File f = (File) getValue();
                isLeaf = f.isFile();
            }

            return isLeaf;
        }

        private ObservableList<TreeItem<File>> buildChildren(TreeItem<File> TreeItem) {
            File f = TreeItem.getValue();
            if (f != null && f.isDirectory()) {
                File[] files = f.listFiles();
                if (files != null) {
                    ObservableList<TreeItem<File>> children = FXCollections.observableArrayList();

                    for (File childFile : files) {
                        children.add(createNode(childFile));
                    }

                    return children;
                }
            }

            return FXCollections.emptyObservableList();
        }
    };
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    Scene scene = new Scene(new Group());
    stage.setTitle("Button Sample");
    stage.setWidth(300);//from   w  w  w . j a  va  2  s  .  co m
    stage.setHeight(190);

    VBox vbox = new VBox();
    vbox.setLayoutX(20);
    vbox.setLayoutY(20);

    TreeItem<String> root = new TreeItem<String>("Root Node");
    root.setExpanded(true);
    root.getChildren().addAll(new TreeItem<String>("Item 1"), new TreeItem<String>("Item 2"),
            new TreeItem<String>("Item 3"));
    TreeView<String> treeView = new TreeView<String>(root);

    vbox.getChildren().add(treeView);
    vbox.setSpacing(10);
    ((Group) scene.getRoot()).getChildren().add(vbox);

    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    final Scene scene = new Scene(new Group(), 200, 400);
    Group sceneRoot = (Group) scene.getRoot();

    TreeItem<String> childNode1 = new TreeItem<>("Node 1");
    TreeItem<String> childNode2 = new TreeItem<>("Node 2");
    TreeItem<String> childNode3 = new TreeItem<>("Node 3");

    TreeItem<String> root = new TreeItem<>("Root");
    root.setExpanded(true);/*w  w w  .  j  a  va  2  s  .c o m*/

    root.getChildren().setAll(childNode1, childNode2, childNode3);

    TreeTableColumn<String, String> column = new TreeTableColumn<>("Column");
    column.setPrefWidth(150);

    column.setCellValueFactory(
            (CellDataFeatures<String, String> p) -> new ReadOnlyStringWrapper(p.getValue().getValue()));

    TreeTableView<String> treeTableView = new TreeTableView<>(root);
    treeTableView.getColumns().add(column);
    sceneRoot.getChildren().add(treeTableView);
    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    rootNode.setExpanded(true);/* w  ww .  j a va  2  s  .co m*/
    for (Employee employee : employees) {
        TreeItem<String> empLeaf = new TreeItem<String>(employee.getName());
        boolean found = false;
        for (TreeItem<String> depNode : rootNode.getChildren()) {
            if (depNode.getValue().contentEquals(employee.getDepartment())) {
                depNode.getChildren().add(empLeaf);
                found = true;
                break;
            }
        }
        if (!found) {
            TreeItem depNode = new TreeItem(employee.getDepartment());
            rootNode.getChildren().add(depNode);
            depNode.getChildren().add(empLeaf);
        }
    }
    stage.setTitle("Tree View Sample");
    VBox box = new VBox();
    final Scene scene = new Scene(box, 400, 300);
    scene.setFill(Color.LIGHTGRAY);

    TreeView<String> treeView = new TreeView<String>(rootNode);
    treeView.setShowRoot(true);
    treeView.setEditable(true);
    box.getChildren().add(treeView);
    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    rootNode.setExpanded(true);//from w  w  w  .j ava2s  .com
    System.out.println(rootNode.isLeaf());
    for (Employee employee : employees) {
        TreeItem<String> empLeaf = new TreeItem<String>(employee.getName());
        boolean found = false;
        for (TreeItem<String> depNode : rootNode.getChildren()) {
            if (depNode.getValue().contentEquals(employee.getDepartment())) {
                depNode.getChildren().add(empLeaf);
                found = true;
                break;
            }
        }
        if (!found) {
            TreeItem depNode = new TreeItem(employee.getDepartment());
            rootNode.getChildren().add(depNode);
            depNode.getChildren().add(empLeaf);
        }
    }
    stage.setTitle("Tree View Sample");
    VBox box = new VBox();
    final Scene scene = new Scene(box, 400, 300);
    scene.setFill(Color.LIGHTGRAY);

    TreeView<String> treeView = new TreeView<String>(rootNode);
    treeView.setShowRoot(true);
    treeView.setEditable(true);
    box.getChildren().add(treeView);
    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    rootNode.setExpanded(true);/*  w ww .  j a v a  2 s .c  om*/
    System.out.println(rootNode.isExpanded());
    for (Employee employee : employees) {
        TreeItem<String> empLeaf = new TreeItem<String>(employee.getName());
        boolean found = false;
        for (TreeItem<String> depNode : rootNode.getChildren()) {
            if (depNode.getValue().contentEquals(employee.getDepartment())) {
                depNode.getChildren().add(empLeaf);
                found = true;
                break;
            }
        }
        if (!found) {
            TreeItem depNode = new TreeItem(employee.getDepartment());
            rootNode.getChildren().add(depNode);
            depNode.getChildren().add(empLeaf);
        }
    }
    stage.setTitle("Tree View Sample");
    VBox box = new VBox();
    final Scene scene = new Scene(box, 400, 300);
    scene.setFill(Color.LIGHTGRAY);

    TreeView<String> treeView = new TreeView<String>(rootNode);
    treeView.setShowRoot(true);
    treeView.setEditable(true);
    box.getChildren().add(treeView);
    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    rootNode.setExpanded(true);//w  w  w .ja  v a 2  s . co m
    rootNode.setGraphic(rootIcon);
    for (Employee employee : employees) {
        TreeItem<String> empLeaf = new TreeItem<String>(employee.getName());
        boolean found = false;
        for (TreeItem<String> depNode : rootNode.getChildren()) {
            if (depNode.getValue().contentEquals(employee.getDepartment())) {
                depNode.getChildren().add(empLeaf);
                found = true;
                break;
            }
        }
        if (!found) {
            TreeItem depNode = new TreeItem(employee.getDepartment());
            rootNode.getChildren().add(depNode);
            depNode.getChildren().add(empLeaf);
        }
    }
    stage.setTitle("Tree View Sample");
    VBox box = new VBox();
    final Scene scene = new Scene(box, 400, 300);
    scene.setFill(Color.LIGHTGRAY);

    TreeView<String> treeView = new TreeView<String>(rootNode);
    treeView.setShowRoot(true);
    treeView.setEditable(true);
    box.getChildren().add(treeView);
    stage.setScene(scene);
    stage.show();
}

---

From source file:Main.java

@Override
public void start(Stage stage) {
    rootNode.setExpanded(true);/*from  w  w  w.j av  a2 s  .co m*/
    rootNode.setValue("new value");
    for (Employee employee : employees) {
        TreeItem<String> empLeaf = new TreeItem<String>(employee.getName());
        boolean found = false;
        for (TreeItem<String> depNode : rootNode.getChildren()) {
            if (depNode.getValue().contentEquals(employee.getDepartment())) {
                depNode.getChildren().add(empLeaf);
                found = true;
                break;
            }
        }
        if (!found) {
            TreeItem depNode = new TreeItem(employee.getDepartment());
            rootNode.getChildren().add(depNode);
            depNode.getChildren().add(empLeaf);
        }
    }
    stage.setTitle("Tree View Sample");
    VBox box = new VBox();
    final Scene scene = new Scene(box, 400, 300);
    scene.setFill(Color.LIGHTGRAY);

    TreeView<String> treeView = new TreeView<String>(rootNode);
    treeView.setShowRoot(true);
    treeView.setEditable(true);
    box.getChildren().add(treeView);
    stage.setScene(scene);
    stage.show();
}

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