Bug 204935 [Markers] MarkersView should use fixed default widths
The MarkersView should use fixed rather than proportional widths as columns are getting very small when the workbench is restarted with a small markers view.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/MarkerDescriptionField.java
* (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.provisional.views.markers.MarkerField#getColumnWeight()
	 */
	public float getColumnWeight() {
		return 4;
	}
	/**
	 * Return the collation key for the description.
	 * 
	 * @param element
	 * @return
	 */
	private CollationKey getDescriptionKey(Object element) {
		if (element instanceof MarkerEntry)
			return ((MarkerItem) element).getCollationKey(IMarker.MESSAGE,
					MarkerSupportConstants.EMPTY_STRING);
		return MarkerSupportInternalUtilities.EMPTY_COLLATION_KEY;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.provisional.views.markers.MarkerField#getValue(org.eclipse.ui.internal.provisional.views.markers.MarkerItem)
	 */
	public String getValue(MarkerItem item) {
		return item.getAttributeValue(IMarker.MESSAGE,
				MarkerSupportConstants.EMPTY_STRING);
	}
}