Bug 34159 [Tasks] First three columns of Task List too wide w/native table
The type, completion, and priority columns of the Task list using the native table widget on MacOS X are much wider than are necessary for displaying the icons in those columns and appear not to be resizable.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/tasklist/TaskList.java
IFile file = ((IFileEditorInput) input).getFile();
					if (selectedMarker.getResource().equals(file))
						editor.gotoMarker(selectedMarker);
				}
			}
		}
	}
	/* (non-Javadoc)
	 * Method declared on IWorkbenchPart.
	 */
	public void setFocus() {
		viewer.getControl().setFocus();
	}
	/**
	 * Sets the property on a marker to the given value.
	 *
	 * @exception CoreException if an error occurs setting the value
	 */
	void setProperty(IMarker marker, String property, Object value) {
		if (MarkerUtil.getProperty(marker, property).equals(value)) {
			return;
		}
		try {
			if (property == tableColumnProperties[1]) { 
				marker.setAttribute(IMarker.DONE, value);
			} else if (property == tableColumnProperties[2]) { 
				
				marker.setAttribute(
					IMarker.PRIORITY,
					IMarker.PRIORITY_HIGH - ((Integer) value).intValue());