package DiffTest;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import javax.swing.SwingUtilities;
import org.netbeans.api.diff.Difference;
import org.netbeans.api.diff.StreamSource;
import org.netbeans.spi.diff.DiffProvider;
import org.netbeans.spi.diff.MergeVisualizer;
import org.openide.util.Exceptions;
import org.openide.util.Lookup;
import org.openide.windows.TopComponent;

public final class MergeVisualizerAction implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        try {
            final StreamSource ss1 = StreamSource.createSource("name1", "Previous", "text/plain", new File("C:/Users/ehencae/Desktop/diff/previous.TXT"));
            final StreamSource ss2 = StreamSource.createSource("name2", "Current", "text/plain", new File("C:/Users/ehencae/Desktop/diff/current.TXT"));
            final StreamSource ss3 = StreamSource.createSource("name2", "Current", "text/plain", new StringReader(""));

            DiffProvider diffProvider = Lookup.getDefault().lookup(DiffProvider.class);
            final Difference[] diffs = diffProvider.computeDiff(ss1.createReader(), ss2.createReader());

            System.out.println("Number of diffs: " + diffs.length);
            for (int i = 0; i < diffs.length; i++) {
                System.out.println("Diff " + i);
                System.out.println("First test: " + diffs[i].getFirstText());
                System.out.println("Second text: " + diffs[i].getSecondText());
            }

            SwingUtilities.invokeLater(new Runnable() {

                @Override
                public void run() {
                    try {
                        MergeVisualizer mergeVisualizer = Lookup.getDefault().lookup(MergeVisualizer.class);
                        Component c = mergeVisualizer.createView(diffs, ss1, ss2, ss3);
                        TopComponent tc = new MergeTestTopComponent();
                        tc.setDisplayName("Diff/Merge Editor");
                        tc.setLayout(new BorderLayout());
                        tc.add(c, BorderLayout.CENTER);
                        tc.open();
                        tc.requestActive();
                    } catch (IOException ex) {
                        Exceptions.printStackTrace(ex);
                    }
                }
            });

        } catch (IOException ex) {
            Exceptions.printStackTrace(ex);
        }
    }
}