DataflowAnomalyTableLabelProvider.java

package net.sourceforge.pmd.eclipse.ui.views.dataflow;

import net.sourceforge.pmd.RuleViolation;
import net.sourceforge.pmd.lang.java.rule.controversial.DaaRuleViolation;
import net.sourceforge.pmd.eclipse.ui.PMDUiConstants;
import net.sourceforge.pmd.eclipse.plugin.PMDPlugin;

import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;

/**
 * 
 * @author SebastianRaffel ( 07.06.2005 ), Sven Jacob
 */
public class DataflowAnomalyTableLabelProvider extends LabelProvider implements ITableLabelProvider {

    private static final String KEY_IMAGE_DFA = "error_dfa";

    /* @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int) */
    public Image getColumnImage(Object element, int columnIndex) {
        // set the Image for the anomaly
        Image image = null;
        if (columnIndex == 0) {
            image = PMDPlugin.getDefault().getImage(KEY_IMAGE_DFA, PMDUiConstants.ICON_LABEL_ERR_DFA);
        }
        return image;
    }

    /* @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int) */
    public String getColumnText(Object element, int columnIndex) {
        
        if (element instanceof RuleViolation) {
            final RuleViolation violation = (RuleViolation) element;
            switch (columnIndex) {
	            case 0: return ((DaaRuleViolation)violation).getType();	// show the Type of Anomaly which is saved as message here
	
	            case 1:
	                // show the (first and last) Line                
	                int line1 = violation.getBeginLine();
	                int line2 = violation.getEndLine();
	
	                // show only one Line if they are equal
	                if ((line1 == line2) || (line2 == 0)) {
	                    return String.valueOf(line1);
	                } else {
	                    // ... or twist them if needed and show something like "11, 12"
	                    if (line2 < line1) {
	                        final int temp = line1;
	                        line1 = line2;
	                        line2 = temp;
	                    }
	                    return line1 + ", " + line2;                    
	                }
	
	            case 2: return violation.getVariableName();     
	            case 3: return violation.getMethodName();
	                 
	            default: return "";
	            }
        }
        
        return "";
    }
}