Examples with DragGestureRecognizer java.awt.dnd.DragGestureRecognizer used on opensource projects

Example 1 with DragGestureRecognizer

use of java.awt.dnd.DragGestureRecognizer in project intellij-community by JetBrains.

the class SwingCleanuper method cleanup.

public static void cleanup() {
    // KeyboardFocusManager.newFocusOwner
    ReflectionUtil.resetStaticField(KeyboardFocusManager.class, "newFocusOwner");
    // Clear "realOppositeComponent", "realOppositeWindow"
    final KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
    resetField(focusManager, Component.class, "realOppositeComponent");
    resetField(focusManager, Window.class, "realOppositeWindow");
    try {
        Object helperObject = ReflectionUtil.getStaticFieldValue(BasicPopupMenuUI.class, Object.class, "menuKeyboardHelper");
        if (helperObject != null) {
            resetField(helperObject, Component.class, "lastFocused");
        }
    } catch (Exception e) {
    // Ignore
    }
    try {
        DragGestureRecognizer recognizer = ReflectionUtil.getStaticFieldValue(TransferHandler.class, DragGestureRecognizer.class, "recognizer");
        if (recognizer != null) {
            // that is memory leak
            recognizer.setComponent(null);
        }
    } catch (Exception e) {
    // Ignore
    }
    try {
        fixJTextComponentMemoryLeak();
    } catch (Exception e) {
    // Ignore
    }
    //Remove focus leaks
    focusManager.setGlobalCurrentFocusCycleRoot(null);
    try {
        final Method m = ReflectionUtil.getDeclaredMethod(KeyboardFocusManager.class, "setGlobalFocusOwner", Component.class);
        m.invoke(focusManager, new Object[] { null });
    } catch (Exception e) {
    // Ignore
    }
    ReflectionUtil.resetStaticField(KeyboardFocusManager.class, "newFocusOwner");
    ReflectionUtil.resetStaticField(KeyboardFocusManager.class, "permanentFocusOwner");
    ReflectionUtil.resetStaticField(KeyboardFocusManager.class, "currentFocusCycleRoot");
    // not anymore in JDK 9
    assert Patches.USE_REFLECTION_TO_ACCESS_JDK8;
    LinkedList heavyweightRequests = ReflectionUtil.getField(KeyboardFocusManager.class, null, LinkedList.class, "heavyweightRequests");
    if (heavyweightRequests != null) {
        synchronized (heavyweightRequests) {
            heavyweightRequests.clear();
        }
    }
}

Example 2 with DragGestureRecognizer

use of java.awt.dnd.DragGestureRecognizer in project jdk8u_jdk by JetBrains.

the class TestDragSourceAdapter method main.

public static void main(String[] args) throws Exception {
    DragSource ds = new DragSource();
    TestDragSourceAdapter dsa1 = new TestDragSourceAdapter(1);
    TestDragSourceAdapter dsa2 = new TestDragSourceAdapter(2);
    Component c = new Button();
    DragGestureRecognizer dgr = ds.createDefaultDragGestureRecognizer(c, DnDConstants.ACTION_COPY, e -> e.startDrag(null, null));
    MouseEvent me = new MouseEvent(c, MouseEvent.MOUSE_PRESSED, 0, InputEvent.CTRL_MASK, 100, 100, 0, false);
    DragGestureEvent dge = new DragGestureEvent(dgr, DnDConstants.ACTION_COPY, new Point(100, 100), Arrays.asList(me));
    DragSourceContext dsc = new DragSourceContext(Toolkit.getDefaultToolkit().createDragSourceContextPeer(dge), dge, new Cursor(Cursor.HAND_CURSOR), null, null, new StringSelection("TEXT"), null);
    ds.addDragSourceListener(dsa1);
    ds.addDragSourceListener(dsa2);
    ds.addDragSourceListener(dsa2);
    ds.addDragSourceMotionListener(dsa1);
    ds.addDragSourceMotionListener(dsa1);
    ds.addDragSourceMotionListener(dsa2);
    dsc.addDragSourceListener(dsa2);
    byte[] serialized;
    try (ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos)) {
        oos.writeObject(dsc);
        serialized = bos.toByteArray();
    }
    DragSourceContext dsc_copy;
    try (ByteArrayInputStream bis = new ByteArrayInputStream(serialized);
        ObjectInputStream ois = new ObjectInputStream(bis)) {
        dsc_copy = (DragSourceContext) ois.readObject();
    }
    try {
        dsc_copy.addDragSourceListener(dsa1);
        throw new RuntimeException("Test failed. Listener addition succeeded");
    } catch (TooManyListenersException ignored) {
    }
    try {
        dsc_copy.addDragSourceListener(dsa2);
        throw new RuntimeException("Test failed. Listener addition succeeded");
    } catch (TooManyListenersException ignored) {
    }
    try (ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos)) {
        oos.writeObject(ds);
        serialized = bos.toByteArray();
    }
    DragSource ds_copy;
    try (ByteArrayInputStream bis = new ByteArrayInputStream(serialized);
        ObjectInputStream ois = new ObjectInputStream(bis)) {
        ds_copy = (DragSource) ois.readObject();
    }
    DragSourceListener[] dsls = ds_copy.getDragSourceListeners();
    assertEquals(3, dsls.length, "DragSourceListeners number");
    assertEquals(1, Stream.of(dsls).filter(dsa1::equals).collect(Collectors.counting()).intValue());
    assertEquals(2, Stream.of(dsls).filter(dsa2::equals).collect(Collectors.counting()).intValue());
    DragSourceMotionListener[] dsmls = ds_copy.getDragSourceMotionListeners();
    assertEquals(3, dsmls.length, "DragSourceMotionListeners number");
    assertEquals(2, Stream.of(dsmls).filter(dsa1::equals).collect(Collectors.counting()).intValue());
    assertEquals(1, Stream.of(dsmls).filter(dsa2::equals).collect(Collectors.counting()).intValue());
}