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SWT Table - Checkbox / Highlight Listeners

I have a SWT Table with check boxes enable on the rows to allow TableItems to be selected. I currently have a listener on there
myTable.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event selectionEvent) {}});
This listener fires both when a check box for a row is checked and when a row is highlighted / selected, I haven't been able to find a way to separate these actions. Am I using the wrong listener or is there a way to do this?
Thanks for any help.

You can check within the Listener if it's a checkbox event or a selection event:
myTable.addListener(SWT.Selection, new Listener()
{
public void handleEvent(Event e)
{
if(e.detail == SWT.CHECK)
{
// Checkbox
}
else
{
// Selection
}
}
});

Editable JCombobox avoid multiple DocumentEvents when the selection change from the popup

I have an editable JComboBox with a single listener on it.
It is a documentListener that execute some code when the user insert or remove some text inside the combobox textfield:
((JTextComponent)combobox.getEditor().getEditorComponent()).getDocument().addDocumentListener(..)
My problem is that when the user select an element from the popup and the content of the combobox textfield changes there are two events executed into the documentListener, one is a removeUpdate() corresponding to the deletion of the previous content and the other is a insertUpdate() corresponding to the insertion of the new value.
I want that only one execution of my code is done and not two. How can I avoid that the code is executed two times when the user select an entry from the popup?
I tried various combination of different listener but for now without result.
What I want in the end is that my code is execute only one time when:
- The user change the text into the combobox textfield.
- The user select an element from the combobox popup
Thanks in advance.
[EDIT 1]
As requested I updated adding SSCCE
myCombobox = new javax.swing.JComboBox<String>();
myCombobox.setEditable(true);
((JTextComponent)myCombobox.getEditor().getEditorComponent()).getDocument().addDocumentListener(
new DocumentListener(){
#Override
public void insertUpdate(DocumentEvent e) {
System.out.println("insert performed");
}
#Override
public void removeUpdate(DocumentEvent e) {
System.out.println("remove performed");
}
#Override
public void changedUpdate(DocumentEvent e) {
System.out.println("change performed");
}
});
myCombobox.addItemListener(new ItemListener() {
#Override
public void itemStateChanged(ItemEvent event) {
if (event.getStateChange() == ItemEvent.SELECTED) {
System.out.println("Action performed");
}
}
});
Note that in this case I have an ItemEvent instead of an ActionEvent because I'm continuing to modify my code searching for a solution in any case the behavior should not be influenced by this.

You can check ((JTextComponent)combobox.getEditor().getEditorComponent()).hasFocus() to be sure user types in the editor.

Set the checkbox of a CheckboxTableViewer when the row is clicked

I am very new to SWT. Started working on it today actually. I have a table of type CheckboxTableViewer. What i want to be able to do is whenever the user selects the row (i.e clicks anywhere on the row) I want the check box to be checked (ticked). Currently I have a listener on the CheckboxTableViewer as follows:
diagnosesTableViewer.addCheckStateListener(new ICheckStateListener() {
#Override
public void checkStateChanged(CheckStateChangedEvent event) {
Nomenclature changedStateNomenclature = (Nomenclature) event
.getElement();
if (event.getChecked()) {
selectedNomenclatures.add(changedStateNomenclature);
} else {
selectedNomenclatures.remove(changedStateNomenclature);
}
}
});
I am able to select the row by checking on the checkbox. But i want to select the check box even when the user selects the row by clicking anywhere on that row on any column (not just the checkbox).
I guess that logic would go somewhere in the addSelectionChangedListener for the addSelectionChangedListener. But I am not sure how to go about it. Can anyone help me with this?

Use this code: Add selection listener to the table. ctv is the instance of of your CheckboxTableViewer.
Also I assumed CheckboxTableViewer allow only single selection not multi.
ctv.getTable().addSelectionListener(new SelectionAdapter() {
#Override
public void widgetSelected(SelectionEvent e) {
int df = ctv.getTable().getSelectionIndex();
ctv.setChecked(ctv.getElementAt(df), !ctv.getChecked(ctv.getElementAt(df)));
}
});

How to save selected view highlighted in rcp application?

I have an Eclipse RCP application. In a perspective there are four views and I want to highlight respective views whenever I click on them. Is it possible to do it?
i have tried following code:
private void addFocusBackgroundOnSelectingView() {
viewer.getControl().addListener(SWT.MouseEnter, new Listener() {
#Override
public void handleEvent(Event event) {
viewer.getControl().setBackground(
PlatformUI.getWorkbench().getDisplay()
.getSystemColor(SWT.COLOR_GRAY));
}
});
viewer.getControl().addListener(SWT.MouseExit, new Listener() {
#Override
public void handleEvent(Event event) {
viewer.getControl().setBackground(
PlatformUI.getWorkbench().getDisplay()
.getSystemColor(SWT.COLOR_WHITE));
}
});
}
I want to save the selection even i mouse hover out if that view is already had selected.

The Eclipse PartService keeps track of which part (Editors, Views etc...) is currently active. You can add a listener to the service via the PlatfomUI class:
IPartListener partListener = ...;
IPartService partService = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getPartService();
partService.addPartListener(listener);
The IPartListener interface has partActivated and partDeactivated methods where you can do your highlighting.

Java swt treeview popup menu

Hiho,
currently I have a working popup menu which appears when I click on a treeview item.
But I want to show different popups for different tree view entries. I don't get a idea how to do so...
Here is my code for creating the menu:
MenuManager menuMgr = new MenuManager("#PopupMenu");
menuMgr.setRemoveAllWhenShown(true);
menuMgr.addMenuListener(new IMenuListener() {
#Override
public void menuAboutToShow(IMenuManager manager) {
Action action = new Action() {
public void run() {
// So something
}
};
action.setText("Set as working file");
manager.add(action);
}
});
Menu menu = menuMgr.createContextMenu(getTree());
getTree().setMenu(menu);

You should propably use a MouseListener on the tree:
final Tree tree = new Tree(parent, ...);
tree.addMouseListener(new MouseAdapter() {
#override
public void mouseDown(MouseEvent me) {
if(tree.getSelection() instanceof MySpecificTreeNode) {
// create menu...
}
}
});

Two ideas. For both you need to listen to selections on the TreeView, because that's the only way to determine which Menu (or special content) you want to show.
Then you could either set the correct menu to the the tree right after you know which one to use or contribute the needed items to the existing menu (that's how it's done in the eclipse framework).