Example usage for org.eclipse.swt.widgets Label redraw

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Label redraw.

Prototype

public void redraw() 

Source Link

Document

Causes the entire bounds of the receiver to be marked as needing to be redrawn.

Usage

From source file:DragTextToLabel.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);

    Text text = new Text(shell, SWT.BORDER | SWT.SINGLE);

    Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
    DragSource source = new DragSource(text, DND.DROP_MOVE | DND.DROP_COPY);
    source.setTransfer(types);/*  ww  w.j a  v  a 2 s. com*/

    source.addDragListener(new DragSourceAdapter() {
        public void dragSetData(DragSourceEvent event) {
            // Get the selected items in the drag source
            DragSource ds = (DragSource) event.widget;
            Text text = (Text) ds.getControl();

            event.data = text.getSelectionText();
        }
    });

    Label label = new Label(shell, SWT.BORDER);
    // Create the drop target
    DropTarget target = new DropTarget(label, DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_DEFAULT);
    target.setTransfer(types);
    target.addDropListener(new DropTargetAdapter() {
        public void dragEnter(DropTargetEvent event) {
            if (event.detail == DND.DROP_DEFAULT) {
                event.detail = (event.operations & DND.DROP_COPY) != 0 ? DND.DROP_COPY : DND.DROP_NONE;
            }

            // Allow dropping text only
            for (int i = 0, n = event.dataTypes.length; i < n; i++) {
                if (TextTransfer.getInstance().isSupportedType(event.dataTypes[i])) {
                    event.currentDataType = event.dataTypes[i];
                }
            }
        }

        public void dragOver(DropTargetEvent event) {
            event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
        }

        public void drop(DropTargetEvent event) {
            if (TextTransfer.getInstance().isSupportedType(event.currentDataType)) {
                // Get the dropped data
                DropTarget target = (DropTarget) event.widget;
                Label label = (Label) target.getControl();
                String data = (String) event.data;

                label.setText(data);
                label.redraw();
            }
        }
    });

    text.setBounds(10, 10, 100, 25);
    label.setBounds(10, 55, 100, 25);
    shell.open();

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

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