final void clear() {
data = null;
checked = false;
grayed = false;
parent.updateScrollBars();
if ((parent.style & SWT.VIRTUAL) != 0) {
cached = false;
parent.redraw();
}
}
/**
* Sets the font that the receiver will use to paint textual information for this item to the font
* specified by the argument, or to the default font for that kind of control if the argument is
* null.
*
* @param font the new font (or null)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setFont(final Font font) {
checkWidget();
if (font != null && font.isDisposed()) {
error(SWT.ERROR_INVALID_ARGUMENT);
}
if (!equals(this.font, font)) {
this.font = font;
markCached();
if (parent.getColumnCount() == 0) {
parent.updateScrollBars();
}
parent.redraw();
}
}
/**
* Sets the receiver's text at a column
*
* @param index the column index
* @param text the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the text is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(final int index, final String text) {
checkWidget();
if (text == null) {
SWT.error(SWT.ERROR_NULL_ARGUMENT);
}
int count = Math.max(1, parent.getColumnCount());
if (index >= 0 && index < count) {
ensureData(index, count);
if (!text.equals(data[index].text)) {
data[index].text = text;
markCached();
if (parent.getColumnCount() == 0) {
parent.updateScrollBars();
}
parent.redraw();
}
}
}
/**
* Sets the receiver's image at a column.
*
* @param index the column index
* @param image the new image
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setImage(final int index, final Image image) {
checkWidget();
if (image != null && image.isDisposed()) {
error(SWT.ERROR_INVALID_ARGUMENT);
}
int count = Math.max(1, parent.getColumnCount());
if (index >= 0 && index < count) {
ensureData(index, count);
if (!equals(data[index].image, image)) {
parent.updateColumnImageCount(index, data[index].image, image);
data[index].image = image;
parent.updateItemImageSize(image);
markCached();
if (parent.getColumnCount() == 0) {
parent.updateScrollBars();
}
parent.redraw();
}
}
}