Example usage for org.eclipse.swt.widgets Tree getItems

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Tree getItems.

Prototype

public TreeItem[] getItems() 

Source Link

Document

Returns a (possibly empty) array of items contained in the receiver that are direct item children of the receiver.

Usage

From source file:Snippet102.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
    tree.setSize(200, 200);/* ww  w .j a v a 2s  . c o m*/
    for (int i = 0; i < 12; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("Item " + i);
    }
    TreeItem item = new TreeItem(tree, SWT.NONE, 1);
    TreeItem[] items = tree.getItems();
    int index = 0;
    while (index < items.length && items[index] != item)
        index++;
    item.setText("*** New Item " + index + " ***");
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet102.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 102");
    Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
    Rectangle clientArea = shell.getClientArea();
    tree.setBounds(clientArea.x, clientArea.y, 200, 200);
    for (int i = 0; i < 12; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("Item " + i);
    }//from   w w  w .j a v  a2s. c o  m
    TreeItem item = new TreeItem(tree, SWT.NONE, 1);
    TreeItem[] items = tree.getItems();
    int index = 0;
    while (index < items.length && items[index] != item)
        index++;
    item.setText("*** New Item " + index + " ***");
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:TreeNodeCollapseListener.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
    for (int i = 0; i < 4; i++) {
        TreeItem item0 = new TreeItem(tree, 0);
        item0.setText("Item " + i);
        for (int j = 0; j < 4; j++) {
            TreeItem item1 = new TreeItem(item0, 0);
            item1.setText("SubItem " + i + " " + j);
            for (int k = 0; k < 4; k++) {
                TreeItem item2 = new TreeItem(item1, 0);
                item2.setText("SubItem " + i + " " + j + " " + k);
            }//from w  w  w .ja v  a 2 s.  c o  m
        }
    }
    tree.addListener(SWT.Collapse, new Listener() {
        public void handleEvent(Event e) {
            System.out.println("Collapse={" + e.item + "}");
        }
    });

    tree.getItems()[0].setExpanded(true);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet358.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 358");
    shell.setLayout(new GridLayout());
    final Tree tree = new Tree(shell, SWT.NONE);
    tree.setLayoutData(new GridData(200, 200));
    for (int i = 0; i < 9; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("root-level item " + i);
        for (int j = 0; j < 9; j++) {
            new TreeItem(item, SWT.NONE).setText("item " + i + "-" + j);
        }//from w w w . j a va 2  s  . c  o  m
    }

    Button button = new Button(shell, SWT.PUSH);
    button.setText("Print item visibilities");
    button.addListener(SWT.Selection, event -> {
        Rectangle treeBounds = new Rectangle(0, 0, 0, 0);
        Point treeSize = tree.getSize();
        treeBounds.width = treeSize.x;
        treeBounds.height = treeSize.y;
        TreeItem[] rootItems = tree.getItems();
        for (int i = 0; i < rootItems.length; i++) {
            TreeItem rootItem = rootItems[i];
            System.out.println(rootItem.getText() + " is at least partially visible? "
                    + treeBounds.intersects(rootItem.getBounds()));
            TreeItem[] childItems = rootItem.getItems();
            for (int j = 0; j < childItems.length; j++) {
                TreeItem childItem = childItems[j];
                System.out.println(childItem.getText() + " is at least partially visible? "
                        + treeBounds.intersects(childItem.getBounds()));
            }
        }
    });

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:TreeNodeSelectionListener.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
    for (int i = 0; i < 4; i++) {
        TreeItem item0 = new TreeItem(tree, 0);
        item0.setText("Item " + i);
        for (int j = 0; j < 4; j++) {
            TreeItem item1 = new TreeItem(item0, 0);
            item1.setText("SubItem " + i + " " + j);
            for (int k = 0; k < 4; k++) {
                TreeItem item2 = new TreeItem(item1, 0);
                item2.setText("SubItem " + i + " " + j + " " + k);
            }//w ww . jav a  2 s.c  o m
        }
    }
    tree.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
            String string = "";
            TreeItem[] selection = tree.getSelection();
            for (int i = 0; i < selection.length; i++)
                string += selection[i] + " ";
            System.out.println("Selection={" + string + "}");
        }
    });
    tree.getItems()[0].setExpanded(true);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:TreeNodeDefaultSelectionListener.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
    for (int i = 0; i < 4; i++) {
        TreeItem item0 = new TreeItem(tree, 0);
        item0.setText("Item " + i);
        for (int j = 0; j < 4; j++) {
            TreeItem item1 = new TreeItem(item0, 0);
            item1.setText("SubItem " + i + " " + j);
            for (int k = 0; k < 4; k++) {
                TreeItem item2 = new TreeItem(item1, 0);
                item2.setText("SubItem " + i + " " + j + " " + k);
            }//from   www  .  j a  va  2s . c o m
        }
    }
    tree.addListener(SWT.DefaultSelection, new Listener() {
        public void handleEvent(Event e) {
            String string = "";
            TreeItem[] selection = tree.getSelection();
            for (int i = 0; i < selection.length; i++)
                string += selection[i] + " ";
            System.out.println("DefaultSelection={" + string + "}");
        }
    });

    tree.getItems()[0].setExpanded(true);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet61.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 61");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
    for (int i = 0; i < 4; i++) {
        TreeItem item0 = new TreeItem(tree, 0);
        item0.setText("Item " + i);
        for (int j = 0; j < 4; j++) {
            TreeItem item1 = new TreeItem(item0, 0);
            item1.setText("SubItem " + i + " " + j);
            for (int k = 0; k < 4; k++) {
                TreeItem item2 = new TreeItem(item1, 0);
                item2.setText("SubItem " + i + " " + j + " " + k);
            }//www .  j a  va 2s .co  m
        }
    }
    tree.addListener(SWT.Selection, e -> {
        String string = "";
        TreeItem[] selection = tree.getSelection();
        for (int i = 0; i < selection.length; i++)
            string += selection[i] + " ";
        System.out.println("Selection={" + string + "}");
    });
    tree.addListener(SWT.DefaultSelection, e -> {
        String string = "";
        TreeItem[] selection = tree.getSelection();
        for (int i = 0; i < selection.length; i++)
            string += selection[i] + " ";
        System.out.println("DefaultSelection={" + string + "}");
    });
    tree.addListener(SWT.Expand, e -> System.out.println("Expand={" + e.item + "}"));
    tree.addListener(SWT.Collapse, e -> System.out.println("Collapse={" + e.item + "}"));
    tree.getItems()[0].setExpanded(true);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:DragTreeLeaf.java

public static void main(String[] args) {

    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER);
    for (int i = 0; i < 3; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("item " + i);
        for (int j = 0; j < 3; j++) {
            TreeItem subItem = new TreeItem(item, SWT.NONE);
            subItem.setText("item " + i + " " + j);
            for (int k = 0; k < 3; k++) {
                TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
                subsubItem.setText("item " + i + " " + j + " " + k);
            }/*  w w  w  . ja v  a  2 s.c  o  m*/
        }
    }

    Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

    final DragSource source = new DragSource(tree, operations);
    source.setTransfer(types);
    final TreeItem[] dragSourceItem = new TreeItem[1];
    source.addDragListener(new DragSourceListener() {
        public void dragStart(DragSourceEvent event) {
            TreeItem[] selection = tree.getSelection();
            if (selection.length > 0 && selection[0].getItemCount() == 0) {
                event.doit = true;
                dragSourceItem[0] = selection[0];
            } else {
                event.doit = false;
            }
        };

        public void dragSetData(DragSourceEvent event) {
            event.data = dragSourceItem[0].getText();
        }

        public void dragFinished(DragSourceEvent event) {
            if (event.detail == DND.DROP_MOVE)
                dragSourceItem[0].dispose();
            dragSourceItem[0] = null;
        }
    });

    DropTarget target = new DropTarget(tree, operations);
    target.setTransfer(types);
    target.addDropListener(new DropTargetAdapter() {
        public void dragOver(DropTargetEvent event) {
            event.feedback = DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
            if (event.item != null) {
                TreeItem item = (TreeItem) event.item;
                Point pt = display.map(null, tree, event.x, event.y);
                Rectangle bounds = item.getBounds();
                if (pt.y < bounds.y + bounds.height / 3) {
                    event.feedback |= DND.FEEDBACK_INSERT_BEFORE;
                } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                    event.feedback |= DND.FEEDBACK_INSERT_AFTER;
                } else {
                    event.feedback |= DND.FEEDBACK_SELECT;
                }
            }
        }

        public void drop(DropTargetEvent event) {
            if (event.data == null) {
                event.detail = DND.DROP_NONE;
                return;
            }
            String text = (String) event.data;
            if (event.item == null) {
                TreeItem item = new TreeItem(tree, SWT.NONE);
                item.setText(text);
            } else {
                TreeItem item = (TreeItem) event.item;
                Point pt = display.map(null, tree, event.x, event.y);
                Rectangle bounds = item.getBounds();
                TreeItem parent = item.getParentItem();
                if (parent != null) {
                    TreeItem[] items = parent.getItems();
                    int index = 0;
                    for (int i = 0; i < items.length; i++) {
                        if (items[i] == item) {
                            index = i;
                            break;
                        }
                    }
                    if (pt.y < bounds.y + bounds.height / 3) {
                        TreeItem newItem = new TreeItem(parent, SWT.NONE, index);
                        newItem.setText(text);
                    } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                        TreeItem newItem = new TreeItem(parent, SWT.NONE, index + 1);
                        newItem.setText(text);
                    } else {
                        TreeItem newItem = new TreeItem(item, SWT.NONE);
                        newItem.setText(text);
                    }

                } else {
                    TreeItem[] items = tree.getItems();
                    int index = 0;
                    for (int i = 0; i < items.length; i++) {
                        if (items[i] == item) {
                            index = i;
                            break;
                        }
                    }
                    if (pt.y < bounds.y + bounds.height / 3) {
                        TreeItem newItem = new TreeItem(tree, SWT.NONE, index);
                        newItem.setText(text);
                    } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                        TreeItem newItem = new TreeItem(tree, SWT.NONE, index + 1);
                        newItem.setText(text);
                    } else {
                        TreeItem newItem = new TreeItem(item, SWT.NONE);
                        newItem.setText(text);
                    }
                }

            }
        }
    });

    shell.setSize(400, 400);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet91.java

public static void main(String[] args) {

    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 91");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.BORDER);
    for (int i = 0; i < 3; i++) {
        TreeItem item = new TreeItem(tree, SWT.NONE);
        item.setText("item " + i);
        for (int j = 0; j < 3; j++) {
            TreeItem subItem = new TreeItem(item, SWT.NONE);
            subItem.setText("item " + i + " " + j);
            for (int k = 0; k < 3; k++) {
                TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
                subsubItem.setText("item " + i + " " + j + " " + k);
            }/*from w w  w .ja v  a 2s.  com*/
        }
    }

    Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

    final DragSource source = new DragSource(tree, operations);
    source.setTransfer(types);
    final TreeItem[] dragSourceItem = new TreeItem[1];
    source.addDragListener(new DragSourceListener() {
        @Override
        public void dragStart(DragSourceEvent event) {
            TreeItem[] selection = tree.getSelection();
            if (selection.length > 0 && selection[0].getItemCount() == 0) {
                event.doit = true;
                dragSourceItem[0] = selection[0];
            } else {
                event.doit = false;
            }
        }

        @Override
        public void dragSetData(DragSourceEvent event) {
            event.data = dragSourceItem[0].getText();
        }

        @Override
        public void dragFinished(DragSourceEvent event) {
            if (event.detail == DND.DROP_MOVE)
                dragSourceItem[0].dispose();
            dragSourceItem[0] = null;
        }
    });

    DropTarget target = new DropTarget(tree, operations);
    target.setTransfer(types);
    target.addDropListener(new DropTargetAdapter() {
        @Override
        public void dragOver(DropTargetEvent event) {
            event.feedback = DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
            if (event.item != null) {
                TreeItem item = (TreeItem) event.item;
                Point pt = display.map(null, tree, event.x, event.y);
                Rectangle bounds = item.getBounds();
                if (pt.y < bounds.y + bounds.height / 3) {
                    event.feedback |= DND.FEEDBACK_INSERT_BEFORE;
                } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                    event.feedback |= DND.FEEDBACK_INSERT_AFTER;
                } else {
                    event.feedback |= DND.FEEDBACK_SELECT;
                }
            }
        }

        @Override
        public void drop(DropTargetEvent event) {
            if (event.data == null) {
                event.detail = DND.DROP_NONE;
                return;
            }
            String text = (String) event.data;
            if (event.item == null) {
                TreeItem item = new TreeItem(tree, SWT.NONE);
                item.setText(text);
            } else {
                TreeItem item = (TreeItem) event.item;
                Point pt = display.map(null, tree, event.x, event.y);
                Rectangle bounds = item.getBounds();
                TreeItem parent = item.getParentItem();
                if (parent != null) {
                    TreeItem[] items = parent.getItems();
                    int index = 0;
                    for (int i = 0; i < items.length; i++) {
                        if (items[i] == item) {
                            index = i;
                            break;
                        }
                    }
                    if (pt.y < bounds.y + bounds.height / 3) {
                        TreeItem newItem = new TreeItem(parent, SWT.NONE, index);
                        newItem.setText(text);
                    } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                        TreeItem newItem = new TreeItem(parent, SWT.NONE, index + 1);
                        newItem.setText(text);
                    } else {
                        TreeItem newItem = new TreeItem(item, SWT.NONE);
                        newItem.setText(text);
                    }

                } else {
                    TreeItem[] items = tree.getItems();
                    int index = 0;
                    for (int i = 0; i < items.length; i++) {
                        if (items[i] == item) {
                            index = i;
                            break;
                        }
                    }
                    if (pt.y < bounds.y + bounds.height / 3) {
                        TreeItem newItem = new TreeItem(tree, SWT.NONE, index);
                        newItem.setText(text);
                    } else if (pt.y > bounds.y + 2 * bounds.height / 3) {
                        TreeItem newItem = new TreeItem(tree, SWT.NONE, index + 1);
                        newItem.setText(text);
                    } else {
                        TreeItem newItem = new TreeItem(item, SWT.NONE);
                        newItem.setText(text);
                    }
                }

            }
        }
    });

    shell.setSize(400, 400);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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