void onDispose(Event event) { removeListener(SWT.Dispose, listener); notifyListeners(SWT.Dispose, event); event.type = SWT.None; table.removeListener(SWT.FocusIn, tableListener); table.removeListener(SWT.MouseDown, tableListener); unhookRowColumnListeners(); ScrollBar hBar = table.getHorizontalBar(); if (hBar != null) { hBar.removeListener(SWT.Selection, resizeListener); } ScrollBar vBar = table.getVerticalBar(); if (vBar != null) { vBar.removeListener(SWT.Selection, resizeListener); } }
/** * Constructs a new instance of this class given its parent table and a style value describing its * behavior and appearance. * * <p>The style value is either one of the style constants defined in class <code>SWT</code> which * is applicable to instances of this class, or must be built by <em>bitwise OR</em>'ing together * (that is, using the <code>int</code> "|" operator) two or more of those <code>SWT</code> style * constants. The class description lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. * * @param parent a Table control which will be the parent of the new instance (cannot be null) * @param style the style of control to construct * @exception IllegalArgumentException * <ul> * <li>ERROR_NULL_ARGUMENT - if the parent is null * </ul> * * @exception SWTException * <ul> * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass * </ul> * * @see SWT#BORDER * @see Widget#checkSubclass() * @see Widget#getStyle() */ public TableCursor(Table parent, int style) { super(parent, style); table = parent; setBackground(null); setForeground(null); listener = event -> { switch (event.type) { case SWT.Dispose: onDispose(event); break; case SWT.FocusIn: case SWT.FocusOut: redraw(); break; case SWT.KeyDown: keyDown(event); break; case SWT.Paint: paint(event); break; case SWT.Traverse: { event.doit = true; switch (event.detail) { case SWT.TRAVERSE_ARROW_NEXT: case SWT.TRAVERSE_ARROW_PREVIOUS: case SWT.TRAVERSE_RETURN: event.doit = false; break; } break; } } }; int[] events = new int[] {SWT.Dispose, SWT.FocusIn, SWT.FocusOut, SWT.KeyDown, SWT.Paint, SWT.Traverse}; for (int i = 0; i < events.length; i++) { addListener(events[i], listener); } tableListener = event -> { switch (event.type) { case SWT.MouseDown: tableMouseDown(event); break; case SWT.FocusIn: tableFocusIn(event); break; } }; table.addListener(SWT.FocusIn, tableListener); table.addListener(SWT.MouseDown, tableListener); disposeItemListener = event -> { unhookRowColumnListeners(); row = null; column = null; _resize(); }; disposeColumnListener = event -> { unhookRowColumnListeners(); row = null; column = null; _resize(); }; resizeListener = event -> _resize(); ScrollBar hBar = table.getHorizontalBar(); if (hBar != null) { hBar.addListener(SWT.Selection, resizeListener); } ScrollBar vBar = table.getVerticalBar(); if (vBar != null) { vBar.addListener(SWT.Selection, resizeListener); } getAccessible() .addAccessibleControlListener( new AccessibleControlAdapter() { @Override public void getRole(AccessibleControlEvent e) { e.detail = ACC.ROLE_TABLECELL; } }); getAccessible() .addAccessibleListener( new AccessibleAdapter() { @Override public void getName(AccessibleEvent e) { if (row == null) return; int columnIndex = column == null ? 0 : table.indexOf(column); e.result = row.getText(columnIndex); } }); }