./CodeAnalyzer/src/de/fzi/cloneanalyzer/viewer/CloneEditor.java 

/*
 * Created on 30.01.2004
 *
 */
package de.fzi.cloneanalyzer.viewer;

import java.util.Iterator;
import java.util.LinkedList;

import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.text.source.AnnotationRulerColumn;
import org.eclipse.jface.text.source.IAnnotationModel;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.IVerticalRuler;
import org.eclipse.jface.text.source.IVerticalRulerColumn;
import org.eclipse.jface.text.source.LineNumberRulerColumn;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.VerticalRuler;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.editors.text.TextEditor;

import de.fzi.cloneanalyzer.annotation.CloneAnnotationAccessExt;
import de.fzi.cloneanalyzer.core.CloneAnalyzerPlugin;
import de.fzi.cloneanalyzer.core.CloneInstanceEclipse;
import de.fzi.cloneanalyzer.reader.CloneFile;
import de.fzi.cloneanalyzer.reader.CloneFileEclipse;

/**
 * @author biehl
 *  
 */
public class CloneEditor extends TextEditor {

	protected IVerticalRuler vr;
	protected SourceViewer sv;
	protected CloneFileEclipse cf;
	protected AnnotationRulerColumn arc;
	static final int MIN_RULERBAR_WIDTH = 20;
	// Minimum (in pixels) for the horizontal size of the ruler bar
	static final int MAX_RULERBAR_WIDTH = 100;
	// Maximum (in pixels) for the horizontal size of the ruler bar

	public CloneEditor() {
		super();
		this.cf = (CloneFileEclipse) CloneFile.openingInstance;
		int width;
		if (cf == null) {
			/*
			 * int needed = CloneAnnotation.calculateX(0,
			 * CloneFileAnnotationPositionManager.getMaxSlots()); width =
			 * Math.min(needed, 50);
			 */
			width = MAX_RULERBAR_WIDTH;
		} else {
			width = Math.min(Math
					.max(cf.getMaxRulerWidth(), MIN_RULERBAR_WIDTH),
					MAX_RULERBAR_WIDTH);
		}
		CloneAnnotationAccessExt caae = new CloneAnnotationAccessExt();
		vr = new VerticalRuler(width, caae);
	}

	public void setCloneFile(CloneFile cf) {
	}

	protected IVerticalRulerColumn createLineNumberRulerColumn() {
		return new LineNumberRulerColumn();
	}

	protected ISourceViewer createSourceViewer(Composite parent,
			IVerticalRuler ruler, int styles) {
		sv = new SourceViewer(parent, ruler, styles);
		return sv;
	}

	protected void rulerContextMenuAboutToShow(IMenuManager menu) {
		int line = getVerticalRuler().getLineOfLastMouseButtonActivity();
		showCloneContextMenu(menu, line);
	}

	protected void showCloneContextMenu(IMenuManager menu, int line) {
		LinkedList ll = cf.getCloneInstanceList(line);
		menu.removeAll();
		if (ll != null) {
			MenuManager mm = null;
			Iterator it = ll.iterator();
			while (it.hasNext()) {
				CloneInstanceEclipse ci = (CloneInstanceEclipse) (it.next());
				String selected = "";
				if (ci == CloneAnalyzerPlugin.getDefault()
						.getSelectedCloneInstance()) {
					selected = ">> ";
				}
				mm = new MenuManager(selected + ci.toShortString(), ci
						.toShortString());
				mm.add(new SelectInTreeAction(ci));
				// TODO clone-comparison-dialog disabled
				//mm.add(new CloneComparisonDialogAction(ci));
				//menu.appendToGroup(IWorkbenchActionConstants.MB_ADDITIONS,mm);
				menu.add(mm);
			}
		}
	}
	
	protected IVerticalRuler createVerticalRuler() {
		return vr;
	}

	public void setAnnotationModel(IAnnotationModel model) {
		ISourceViewer sv = getSourceViewer();
		sv.setDocument(sv.getDocument(), model);
	}

	public boolean isSaveAsAllowed() {
		return true;
	}

	public boolean isSaveOnCloseNeeded() {
		return true;
	}

}