/**
* 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);
}
});
}
@Override
public void setVisible(boolean visible) {
checkWidget();
if (visible) _resize();
super.setVisible(visible);
}