Java Item.isDisposed方法代码示例

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
protected void useItem ( final Item item )
{
    if ( this.label != null )
    {
        item.setText ( this.label );
    }
    item.setImage ( getEmptyImage () );

    this.blinker = new StyleBlinker () {

        @Override
        public void update ( final CurrentStyle currentStyle )
        {
            if ( !item.isDisposed () )
            {
                updateItem ( item, currentStyle );
            }
        }
    };
    this.styler = new StateStyler ( this.blinker );
    this.styler.style ( new SummaryStateInformation ( this.summaryInformation ) );
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
@Override
protected Item[] getChildren(Widget parent) {
	if (parent.isDisposed()) return new Item[0];
	Item[] result = super.getChildren(parent);
	for (Item item : result) {
		if (item.isDisposed()) {
			return getChildrenIgnoringDisposed(result).toArray(result);
		}
	}
	return result;
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
private List<Item> getChildrenIgnoringDisposed(Item[] unfiltered) {
	ArrayList result = new ArrayList(unfiltered.length);
	for (Item child : unfiltered) {
		if (!child.isDisposed()) {
			result.add(child);
		}
	}
	return result;
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
/** {@inheritDoc} */
protected void doUpdateItem(final Item item, Object element) {
	super.doUpdateItem(item, element);
	updateRowHeader(item);
	if(autoPreferredHeight && !item.isDisposed())
		((GridItem)item).pack();
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
/**
 * Deactivates the currently active cell editor.
 */
public void applyEditorValue() {
	CellEditor c = this.cellEditor;
	if (c != null) {
		// null out cell editor before calling save
		// in case save results in applyEditorValue being re-entered
		// see 1GAHI8Z: ITPUI:ALL - How to code event notification when
		// using cell editor ?
		this.cellEditor = null;
		Item t = this.tableItem;
		// don't null out table item -- same item is still selected
		if (t != null && !t.isDisposed()) {
			saveEditorValue(c, t);
		}
		setEditor(null, null, 0);
		c.removeListener(cellEditorListener);
		Control control = c.getControl();
		if (control != null) {
			if (mouseListener != null) {
				control.removeMouseListener(mouseListener);
			}
			if (focusListener != null) {
				control.removeFocusListener(focusListener);
			}
		}
		c.deactivate();
	}
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
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));
   	}
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
public static void dispose(Item i) {
	if (i != null && !i.isDisposed())
		i.dispose();
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
public static boolean isDisposed(Item x) {
	return x==null || x.isDisposed();
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
private void updateItem(Item item) {
	if (!item.isDisposed()) {
		fContentViewerAccess.doUpdateItem(item);
	}
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
private void updateItem(Item item) {
	if (!item.isDisposed()) {
		_commonViewer.doUpdateItem(item);
	}
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
protected void doUpdateItem(Item item, Object element) {
	// update icon and label
	// Similar code in TableTreeViewer.doUpdateItem()
	IBaseLabelProvider prov = getLabelProvider();
	ITableLabelProvider tprov = null;

	if (prov instanceof ITableLabelProvider) {
		tprov = (ITableLabelProvider) prov;
	}

	int columnCount = tableTree.getTable().getColumnCount();
	TableTreeItem ti = (TableTreeItem) item;
	// 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++) {
		String text = "";//$NON-NLS-1$
		Image image = null;
		if (tprov != null) {
			text = tprov.getColumnText(element, column);
			image = tprov.getColumnImage(element, column);
		} else {
			if (column == 0) {
				ViewerLabel updateLabel = new ViewerLabel(item.getText(),
						item.getImage());
				buildLabel(updateLabel, element);

				// As it is possible for user code to run the event
				// loop check here.
				if (item.isDisposed()) {
					unmapElement(element, item);
					return;
				}

				text = updateLabel.getText();
				image = updateLabel.getImage();
			}
		}

		// Avoid setting text to null
		if (text == null) {
			text = ""; //$NON-NLS-1$
		}

		ti.setText(column, text);
		// Apparently a problem to setImage to null if already null
		if (ti.getImage(column) != image) {
			ti.setImage(column, image);
		}

		getColorAndFontCollector().setFontsAndColors(element);
		getColorAndFontCollector().applyFontsAndColors(ti);
	}

}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
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);
	}
}
 

import org.eclipse.swt.widgets.Item; //导入方法依赖的package包/类
/**
 * Copies the attributes of the given element into the given SWT item.
 * 
 * @param item
 *            the SWT item
 * @param element
 *            the element
 */
protected void doUpdateItem(final Item item, Object element) {
	if (item.isDisposed()) {
		unmapElement(element, item);
		return;
	}

	int columnCount = doGetColumnCount();
	if (columnCount == 0)// If no columns are created then fake one
		columnCount = 1;

	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();
	}

	for (int column = 0; column < columnCount; 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;
		}

	}
}