/*
* Extends this method to update check box states.
*/
protected void doUpdateItem(Item item, Object element) {
super.doUpdateItem(item, element);
if (!item.isDisposed() && checkStateProvider != null) {
setChecked(element, checkStateProvider.isChecked(element));
setGrayed(element, checkStateProvider.isGrayed(element));
}
}
@Override
public void handleEvent(Event e) {
Item selection = getSelection(e.widget);
if (selection == null || selection.isDisposed() || this.selection == selection) {
return;
}
Item[] items = getItems(e.widget);
int selectionIndex = getSelectionIndex(e.widget);
boolean selectionSet = false;
CSSStyleDeclaration selectedStyle =
engine.getViewCSS().getComputedStyle(engine.getElement(selection), "selected");
if (selectedStyle != null) {
CSSValue value = selectedStyle.getPropertyCSSValue("show-close");
if (value != null) {
setShowClose(selection, Boolean.parseBoolean(value.getCssText()));
selectionSet = true;
}
}
CSSStyleDeclaration unselectedStyle =
engine.getViewCSS().getComputedStyle(engine.getElement(selection), null);
if (unselectedStyle == null) {
for (int i = 0; i < items.length; i++) {
if (selectionSet && i != selectionIndex) {
setShowClose(items[i], false);
}
}
} else {
CSSValue value = unselectedStyle.getPropertyCSSValue("show-close");
boolean unselectedShowClose =
value == null ? false : Boolean.parseBoolean(value.getCssText());
for (int i = 0; i < items.length; i++) {
if (selectionSet && i != selectionIndex) {
setShowClose(items[i], unselectedShowClose);
}
}
}
this.selection = selection;
}
private void updateItem(Item item) {
if (!item.isDisposed()) { // defensive code
ILabelProvider lprovider = (ILabelProvider) fContentViewer.getLabelProvider();
Object data = item.getData();
String oldText = item.getText();
String text = lprovider.getText(data);
if (text != null && !text.equals(oldText)) {
item.setText(text);
}
Image oldImage = item.getImage();
Image image = lprovider.getImage(data);
if (image != null && !image.equals(oldImage)) {
item.setImage(image);
}
}
}
@Override
protected void doUpdateItem(Widget widget, Object element, boolean fullMap) {
boolean oldBusy = isBusy();
setBusy(true);
try {
if (widget instanceof Item) {
final Item item = (Item) widget;
// remember element we are showing
if (fullMap) {
associate(element, item);
} else {
Object data = item.getData();
if (data != null) {
unmapElement(data, item);
}
item.setData(element);
mapElement(element, item);
}
int columnCount = doGetColumnCount();
if (columnCount == 0) columnCount = 1; // If there are no columns do the first one
ViewerRow viewerRowFromItem = getViewerRowFromItem(item);
boolean isVirtual = (getControl().getStyle() & SWT.VIRTUAL) != 0;
// If the control is virtual, we cannot use the cached viewer row object. See bug 188663.
if (isVirtual) {
viewerRowFromItem = (ViewerRow) viewerRowFromItem.clone();
}
// Also enter loop if no columns added. See 1G9WWGZ: JFUIF:WINNT -
// TableViewer with 0 columns does not work
for (int column = 0; column < columnCount || column == 0; column++) {
ViewerColumn columnViewer = getViewerColumn(column);
ViewerCell cellToUpdate = updateCell(viewerRowFromItem, column, element);
// If the control is virtual, we cannot use the cached cell object. See bug 188663.
if (isVirtual) {
cellToUpdate =
new ViewerCell(cellToUpdate.getViewerRow(), cellToUpdate.getColumnIndex(), element);
}
columnViewer.refresh(cellToUpdate);
// clear cell (see bug 201280)
updateCell(null, 0, null);
// As it is possible for user code to run the event
// loop check here.
if (item.isDisposed()) {
unmapElement(element, item);
return;
}
}
}
} finally {
setBusy(oldBusy);
}
}
