Bug 82743 [Markers] improved problem filter needed (OR clauses)
when working with large workspaces I find the current problems filter not powerful enough. If I were able to AND and OR the conditions available from the UI then I would solve all my use cases. my most needed one is : I would like to see ERRORS anywhere in the workspace OR WARNINGS in the current selected project
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
updateStatusMessage(null);
    }
    /**
     * Updates that message displayed in the status line.  If the
     * selection parameter is <code>null</code> or its size is 0, the status 
     * area is blanked out.  If only 1 marker is selected, the
     * status area is updated with the contents of the message
     * attribute of this marker.  In other cases (more than one marker
     * is selected) the status area indicates how many items have
     * been selected.
     * <p>
     * This method may be overwritten.
     * </p><p>
     * This method is called whenever a selection changes in this view.
     * </p>
     * @param selection a valid selection or <code>null</code>
     */
    protected void updateStatusMessage(IStructuredSelection selection) {
        String message = ""; 
        if (selection == null || selection.size() == 0) {
            
            message = updateSummaryVisible();
        } else if (selection.size() == 1) {
            
            ConcreteMarker marker = (ConcreteMarker) selection
                    .getFirstElement();
            message = marker.getDescription();
        } else if (selection.size() > 1) {
            
            message = updateSummarySelected(selection);