I am trying to override the default mouse menu, while adding vertex and edges to the graph. I was following this example, as it works fine but i want to know what (interfaces do i need to implement if any) or changes do i have to make in order to change mouse cursor and also be able to add vertex/edge using right click instead of left click:
public class PopupVertexEdgeMenuMousePlugin<V, E> extends AbstractPopupGraphMousePlugin {
private JPopupMenu edgePopup, vertexPopup;
public PopupVertexEdgeMenuMousePlugin() {
this(MouseEvent.BUTTON3);
}
public PopupVertexEdgeMenuMousePlugin(int modifiers) {
super(modifiers);
}
protected void handlePopup(MouseEvent e) {
final VisualizationViewer<V,E> vv =
(VisualizationViewer<V,E>)e.getSource();
Point2D p = e.getPoint();
GraphElementAccessor<V,E> pickSupport = vv.getPickSupport();
if(pickSupport != null) {
final V v = pickSupport.getVertex(vv.getGraphLayout(), p.getX(), p.getY());
if(v != null) {
System.out.println("Vertex " + v + " was right clicked");
updateVertexMenu(v, vv, p);
vertexPopup.show(vv, e.getX(), e.getY());
} else {
final E edge = pickSupport.getEdge(vv.getGraphLayout(), p.getX(), p.getY());
if(edge != null) {
System.out.println("Edge " + edge + " was right clicked");
updateEdgeMenu(edge, vv, p);
edgePopup.show(vv, e.getX(), e.getY());
}
}
}
}
private void updateVertexMenu(V v, VisualizationViewer vv, Point2D point) {
if (vertexPopup == null) return;
Component[] menuComps = vertexPopup.getComponents();
for (Component comp: menuComps) {
if (comp instanceof VertexMenuListener) {
((VertexMenuListener)comp).setVertexAndView(v, vv);
}
if (comp instanceof MenuPointListener) {
((MenuPointListener)comp).setPoint(point);
}
}
}
}
Here, it adds vertex to the graph, using left click, i want to add this option on right click. And also it adds vertext/edge only in editing mode, how can i make it to do the same in Picking mode as well? or may be change the cursor while keeping the editing mode so it looks like picking mode?
i don't know right click for both edges and vertex same time but for one of them it works fine. it is for vertex . jframe is your frame your jung is added to.
visualv.addGraphMouseListener(new MyGraphMouseListener<String, String>(jframe));
........
private class MyGraphMouseListener<V, T> implements GraphMouseListener<V> {....}
EDIT : this can help you with both Pop-up menu using mouse rightclick in JUNG
Related
I have a JTree, and would like for its getTreeCellEditorComponent() method to be invoked when I single click on a node. According to the documentation for the DefaultTreeCellEditor class (which I extended), "Editing is started on a triple mouse click, or after a click, pause, click and a delay of 1200 miliseconds." Is there some way to override this behavior, so that a single-click could start the editing process?
The JTree API recommends a MouseListener, but a key binding is also handy. This example invokes startEditingAtPath() and binds to the Enter key:
final JTree tree = new JTree();
tree.setEditable(true);
MouseListener ml = new MouseAdapter() {
#Override
public void mousePressed(MouseEvent e) {
int row = tree.getRowForLocation(e.getX(), e.getY());
TreePath path = tree.getPathForLocation(e.getX(), e.getY());
if (row != -1) {
if (e.getClickCount() == 1) {
tree.startEditingAtPath(path);
}
}
}
};
tree.addMouseListener(ml);
tree.getInputMap().put(
KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "startEditing");
Addendum: See also this answer regarding usability.
Technically, you can subclass DefaultTreeCellEditor and tweaks its logic to start editing on the first single click:
JTree tree = new JTree();
tree.setEditable(true);
TreeCellEditor editor =
new DefaultTreeCellEditor(tree, (DefaultTreeCellRenderer) tree.getCellRenderer()) {
#Override
protected boolean canEditImmediately(EventObject event) {
if((event instanceof MouseEvent) &&
SwingUtilities.isLeftMouseButton((MouseEvent)event)) {
MouseEvent me = (MouseEvent)event;
return ((me.getClickCount() >= 1) &&
inHitRegion(me.getX(), me.getY()));
}
return (event == null);
}
};
tree.setCellEditor(editor);
There's a usability quirk, though, as now you can't select without starting an edit - which may or may not be your intention.
I use this code fragment to perform some action on a tree when the mouse is double-clicked: open a window and get the node which was double clicked by the mouse, but it doesn't return anything, it returns null:
MouseListener ml = new MouseAdapter() {
public void mousePressed(MouseEvent e) {
int selRow = contactTree.getRowForLocation(e.getX(), e.getY());
TreePath selPath = contactTree.getPathForLocation(e.getX(), e.getY());
System.out.println(contactTree.getEditingPath());
Account memberToChat;
if(selRow != -1) {
if(e.getClickCount() == 1) {
}
else if(e.getClickCount() == 2) {
new ChatWindow().setVisible(true);
memberToChat=(Account)node.getUserObject(); // node is declared somewhere in the class as DefaultMutableTreeNode node
System.out.println(memberToChat.getFirstName()+" "+memberToChat.getEmail());
}
}
}
};
for JTree to set proper setSelectionMode
add TreeSelectionListener
example with TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION
I'm doing a Java project which includes little bit of graphical stuffs. I want to display set of BufferedImages under Accordion menu kind of thing. that means when I click on one Accordion menu root item it should display set of images under that name and when clicking on another root menu item it should show another set of images. How could I implement this with Java?. Is there any way to add JPanel as Accordion menu leaf item? If anyone can provide sample code it is really appreciable.
Couldn't resist some fun: turns out that it's possible to tweak a JXTaskPaneContainer (in SwingX) a bit to behave similar to an accordion. All that's needed it to force at most one of the contained JXTaskPaneContainers to be expanded. Something like the code snippet:
JXTaskPaneContainer container = new JXTaskPaneContainer() {
private JXTaskPane current;
private PropertyChangeListener expansionListener;
/**
* #inherited <p>
*/
#Override
protected void addImpl(Component comp, Object constraints, int index) {
super.addImpl(comp, constraints, index);
if (comp instanceof JXTaskPane) {
grabExpansionControl((JXTaskPane) comp);
}
}
private void grabExpansionControl(JXTaskPane comp) {
if (current != null) {
comp.setCollapsed(true);
} else {
current = comp;
comp.setCollapsed(false);
}
comp.addPropertyChangeListener("collapsed",
getExpansionListener());
}
private void updateCurrentTaskPane(JXTaskPane source) {
if (source != current) {
if (!source.isCollapsed()) {
if (current != null) {
current.setCollapsed(true);
}
current = source;
}
}
}
private PropertyChangeListener createExpansionListener() {
PropertyChangeListener l = new PropertyChangeListener() {
#Override
public void propertyChange(PropertyChangeEvent evt) {
// TODO Auto-generated method stub
updateCurrentTaskPane((JXTaskPane) evt.getSource());
}
};
return l;
}
private PropertyChangeListener getExpansionListener() {
if (expansionListener == null) {
expansionListener = createExpansionListener();
}
return expansionListener;
}
};
((VerticalLayout) container.getLayout()).setGap(0);
Well a little bit of googling and I found this link .
It may be helpful for you -
http://code.google.com/p/martin-personal-project/downloads/detail?name=SwingAccordionMenu.zip&can=2&q=
You will get a ZIP file , unzip and run the SwingAccordionMenu.jar, you will get accordion as output like -
In GUI,I am displaying one JTree at the left hand side of JPanel. Now for each Node(leaf), on Mouse right click I want to display JPopup menu asking for displaying the statistics about Node in right JPanel.
As i am new to swing,Could any one help with code.
Thanks in Advance.
Regards,
Tushar Dodia.
Use JTree's method
public TreePath getPathForLocation(int x, int y)
Then TreePath
public Object getLastPathComponent()
That returns you desired node from point where user right clicked.
Seem to have caused a bit of confusion (confusing myself ;-) - so here's a code snippet for doing target location related configuration of the componentPopup
JPopupMenu popup = new JPopupMenu();
final Action action = new AbstractAction("empty") {
#Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
};
popup.add(action);
JTree tree = new JTree() {
/**
* #inherited <p>
*/
#Override
public Point getPopupLocation(MouseEvent e) {
if (e != null) {
TreePath path = getClosestPathForLocation(e.getX(), e.getY());
action.putValue(Action.NAME, String.valueOf(path.getLastPathComponent()));
return e.getPoint();
}
action.putValue(Action.NAME, "no mouse");
return null;
}
};
tree.setComponentPopupMenu(popup);
I took #kleopatra solution and changed it slightly.
Maybe it isn't the best way but works for me.
JTree tree = new JTree() {
private static final long serialVersionUID = 1L;
#Override public Point getPopupLocation(MouseEvent e) {
if (e == null) return new Point(0,0);
TreePath path = getClosestPathForLocation(e.getX(), e.getY());
Object selected = path != null ? path.getLastPathComponent() : null;
setComponentPopupMenu(getMenuForTreeNode(getComponentPopupMenu(), selected));
setSelectionPath(path);
return e.getPoint();
}
};
public JPopupMenu getMenuForTreeNode(JPopupMenu menu, Object treeNode) {
if (menu == null) menu = new JPopupMenu("Menu:");
menu.removeAll();
if (treeNode instanceof MyTreeItem) {
menu.add(new JMenuItem("This is my tree item: " + treeNode.toString()));
}
return menu;
}
I'm trying to implement pop-up menus in Java JTree. I've sub-classed DefaultTreeCellRenderer (to change node appearance) and DefaultTreeCellEditor (to create Components to attach event listeners to, since apparently the Components that DefaultTreeCellRenderer.getTreeCellRendererComponent() returns can't do it?). I don't really want to "edit" the nodes, just be able to pop-up a menu when a node gets right-clicked, but this is the only way I can think of doing it right now...
Below is the code that I have so far-- I'm just trying to figure out how to capture MouseEvents. It sort of works, but badly. What's a better way to accomplish what I'm trying to do here?
private class My_TreeCellRenderer extends DefaultTreeCellRenderer {
My_TreeCellRenderer() {
super ();
}
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
// set label text and tool tips
setText(((My_Object)value).getTreeLabel());
setToolTipText(((My_Object)value).getTreeToolTip());
return this;
}
}
private class My_TreeCellEditor extends DefaultTreeCellEditor {
private MouseAdapter ma;
My_TreeCellEditor(JTree tree, DefaultTreeCellRenderer renderer) {
super (tree, renderer);
ma = new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if (e.isPopupTrigger()) {
System.out.println("My Popup");
}
}
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
System.out.println("My Popup");
}
}
};
}
public Component getTreeCellEditorComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row) {
String src_filename = null;
// return non-editing component
Component c = renderer.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, true);
// add mouse listener if it's not listening already
MouseListener mouseListeners[] = c.getMouseListeners();
int i;
for (i=0; i < mouseListeners.length && mouseListeners[i] != ma; i++);
if (i >= mouseListeners.length)
c.addMouseListener(ma);
return c;
}
protected boolean canEditImmediately(EventObject event) {
if (event instanceof MouseEvent && ((MouseEvent)event).getClickCount() == 1)
return true;
else
return false;
}
}
This task is simple to accomplish, the following is all you need:
//create a class which implements the MouseListener interface and
//implement the following in your overridden mouseClicked method
#Override
public void mouseClicked(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
int row = tree.getClosestRowForLocation(e.getX(), e.getY());
tree.setSelectionRow(row);
popupMenu.show(e.getComponent(), e.getX(), e.getY());
}
}
You can then add this custom listener to your desired tree(s).
Taken right out of the JTree API
// If you are interested in detecting either double-click events or when a user clicks on a node, regardless of whether or not it was selected, we recommend you do the following:
final JTree tree = ...;
MouseListener ml = new MouseAdapter() {
public void mousePressed(MouseEvent e) {
int selRow = tree.getRowForLocation(e.getX(), e.getY());
TreePath selPath = tree.getPathForLocation(e.getX(), e.getY());
if(selRow != -1) {
if(e.getClickCount() == 1) {
mySingleClick(selRow, selPath);
}
else if(e.getClickCount() == 2) {
myDoubleClick(selRow, selPath);
}
}
}
};
tree.addMouseListener(ml);
Of course you need to modify it a bit for right click instead of left click
Thanks everyone. I knew something was wrong when I was spending that much effort on implementing a simple popup.
I dismissed this line of thought at first because it felt weird to resort to x- and y- coordinates to find the node I'm looking for, but I guess this is the way to do it.
// add MouseListener to tree
MouseAdapter ma = new MouseAdapter() {
private void myPopupEvent(MouseEvent e) {
int x = e.getX();
int y = e.getY();
JTree tree = (JTree)e.getSource();
TreePath path = tree.getPathForLocation(x, y);
if (path == null)
return;
tree.setSelectionPath(path);
My_Obj obj = (My_Obj)path.getLastPathComponent();
String label = "popup: " + obj.getTreeLabel();
JPopupMenu popup = new JPopupMenu();
popup.add(new JMenuItem(label));
popup.show(tree, x, y);
}
public void mousePressed(MouseEvent e) {
if (e.isPopupTrigger()) myPopupEvent(e);
}
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) myPopupEvent(e);
}
};
(...)
JTree tree = new JTree();
tree.addMouseListener(ma);
I think you're making things way harder than they need to be.
JTree has several "add_foo_Listener" methods on it. Implement one of those (TreeSelectionListener looks about right), and then you've got the currently selected node.
Implement a MouseListener so that you can detect the right-click event (and add it to the JTree, since JTree's a Component), and then you should have everything you need to post a context-sensitive menu.
Check out this tutorial for more details.
The Renderer is only a transient "rubber stamp", so adding an input listener on that wont be particularly helpful. The Editor, as you point out, is only there once you have gestured to edit. So you want to add a listener to the JTree (assuming it isn't implemented as a composite component).
Call addRightClickListener() to add the right-click context menu listener to your JTree. Both overrides are for proper cross-platform functionality (Windows and Linux differ here).
private void addRightClickListener()
{
MouseListener mouseListener = new MouseAdapter()
{
#Override
public void mousePressed(MouseEvent mouseEvent)
{
handleContextMenu(mouseEvent);
}
#Override
public void mouseReleased(MouseEvent mouseEvent)
{
handleContextMenu(mouseEvent);
}
};
tree.addMouseListener(mouseListener);
}
private void handleContextMenu(MouseEvent mouseEvent)
{
if (mouseEvent.isPopupTrigger())
{
MyContextMenu contextMenu = new MyContextMenu();
contextMenu.show(mouseEvent.getComponent(),
mouseEvent.getX(),
mouseEvent.getY());
}
}