PatternLeaf.java

/*******************************************************************************
 * Copyright (c) 2010-2012, Zoltan Ujhelyi, Tamas Szabo, Istvan Rath and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Zoltan Ujhelyi, Tamas Szabo - initial API and implementation
 *******************************************************************************/

package org.eclipse.incquery.tooling.ui.queryexplorer.content.patternsviewer;

import org.eclipse.incquery.tooling.ui.queryexplorer.QueryExplorer;
import org.eclipse.jface.viewers.CheckboxTreeViewer;

/**
 * This class represents a leaf element inside a pattern hierarchy.
 * 
 * @author Tamas Szabo
 * 
 */
public class PatternLeaf extends PatternComponent {

    public PatternLeaf(String patternNameFragment, PatternComposite parent) {
        super();
        this.patternNameFragment = patternNameFragment;
        this.parent = parent;
    }

    @Override
    public String getFullPatternNamePrefix() {
        StringBuilder sb = new StringBuilder(patternNameFragment);
        PatternsViewerInput input = QueryExplorer.getInstance().getPatternsViewerInput();

        if (parent != null && !parent.equals(input.getGeneratedPatternsRoot())
                && !parent.equals(input.getGenericPatternsRoot())) {
            sb.insert(0, parent.getFullPatternNamePrefix() + ".");
        }
        return sb.toString();
    }

    @Override
    public boolean updateSelection(CheckboxTreeViewer treeViewer) {
        treeViewer.setChecked(this, selected);
        return this.selected;
    }

    @Override
    public int hashCode() {
        return patternNameFragment.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (obj.getClass() != this.getClass())) {
            return false;
        }

        PatternLeaf composite = (PatternLeaf) obj;

        if ((this.patternNameFragment == composite.patternNameFragment) && (this.parent == composite.parent)) {
            return true;
        }

        return false;
    }
}