Bug 169997 [CellEditors] TableViewer doesn't activate TextCellEditor consistently
A TextCellEditor is not activated consistently in a TableViewer if the cell clicked is not in the currently selected row. Running the sample application in a debugger, the bounds reported for the table item appears to be incorrect for the column when the row is not selected. This behaviour can be observed by setting a breakpoint at TableEditorImpl.java line 135 (the if statement doesn't return true unless the row is selected due to the bounds being incorrect): if (bounds.contains(event.x, event.y)) {
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
*
	 */
	public void setLabelProvider(IBaseLabelProvider labelProvider) {
		Assert.isTrue(labelProvider instanceof ITableLabelProvider
				|| labelProvider instanceof ILabelProvider
				|| labelProvider instanceof CellLabelProvider);
		updateColumnParts(labelProvider);
		
		super.setLabelProvider(labelProvider);
		if (labelProvider instanceof CellLabelProvider) {
			((CellLabelProvider) labelProvider).initialize(this, null);
		}
	}
	
	void internalDisposeLabelProvider(IBaseLabelProvider oldProvider) {
    	if (oldProvider instanceof CellLabelProvider) {
    		((CellLabelProvider) oldProvider).dispose(this, null);
    	} else {
    		super.internalDisposeLabelProvider(oldProvider);
    	}
	}
	/**
	 * Clear the viewer parts for the columns
	 */
	private void updateColumnParts(IBaseLabelProvider labelProvider) {
		ViewerColumn column;
		int i = 0;
		while ((column = getViewerColumn(i++)) != null) {
			column.setLabelProvider(CellLabelProvider
					.createViewerLabelProvider(this, labelProvider), false);