DiffAction.java

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 * under the [CDDL or GPL Version 2] license." If you do not indicate a
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package org.nbgit.ui.diff;

import java.awt.event.ActionEvent;
import java.io.File;
import javax.swing.JOptionPane;
import org.nbgit.StatusInfo;
import org.nbgit.StatusCache;
import org.nbgit.Git;
import org.nbgit.OutputLogger;
import org.nbgit.ui.ContextAction;
import org.nbgit.util.GitUtils;
import org.netbeans.modules.versioning.spi.VCSContext;
import org.netbeans.modules.versioning.util.Utils;
import org.openide.util.NbBundle;

/**
 * Diff action for Git:
 * git diff - diff repository (or selected files)
 *
 * @author alexbcoles
 * @author John Rice
 */
public class DiffAction extends ContextAction {

    public DiffAction(String name, VCSContext context) {
        super(name, context);
    }

    public void performAction(ActionEvent e) {
        String contextName = Utils.getContextDisplayName(context);

        File root = GitUtils.getRootFile(context);
        File[] files = context.getRootFiles().toArray(new File[context.getRootFiles().size()]);
        boolean bNotManaged = (root == null) || (files == null || files.length == 0);

        if (bNotManaged) {
            OutputLogger logger = OutputLogger.getLogger(Git.GIT_OUTPUT_TAB_TITLE);
            logger.outputInRed(NbBundle.getMessage(DiffAction.class, "MSG_DIFF_TITLE")); // NOI18N
            logger.outputInRed(NbBundle.getMessage(DiffAction.class, "MSG_DIFF_TITLE_SEP")); // NOI18N
            logger.outputInRed(
                    NbBundle.getMessage(DiffAction.class, "MSG_DIFF_NOT_SUPPORTED_INVIEW_INFO")); // NOI18N
            logger.output(""); // NOI18N
            logger.closeLog();
            JOptionPane.showMessageDialog(null,
                    NbBundle.getMessage(DiffAction.class, "MSG_DIFF_NOT_SUPPORTED_INVIEW"),// NOI18N
                    NbBundle.getMessage(DiffAction.class, "MSG_DIFF_NOT_SUPPORTED_INVIEW_TITLE"),// NOI18N
                    JOptionPane.INFORMATION_MESSAGE);
            return;
        }

        diff(context, Setup.DIFFTYPE_LOCAL, contextName);
    }

    @Override
    public boolean isEnabled() {
        StatusCache cache = Git.getInstance().getStatusCache();
        return cache.containsFileOfStatus(context, StatusInfo.STATUS_LOCAL_CHANGE);
    }

    public static void diff(VCSContext ctx, int type, String contextName) {
        MultiDiffPanel panel = new MultiDiffPanel(ctx, type, contextName); // spawns background DiffPrepareTask
        DiffTopComponent tc = new DiffTopComponent(panel);
        tc.setName(NbBundle.getMessage(DiffAction.class, "CTL_DiffPanel_Title", contextName)); // NOI18N
        tc.open();
        tc.requestActive();
    }

    public static void diff(File file, String rev1, String rev2) {
        MultiDiffPanel panel = new MultiDiffPanel(file, rev1, rev2); // spawns background DiffPrepareTask
        DiffTopComponent tc = new DiffTopComponent(panel);
        tc.setName(NbBundle.getMessage(DiffAction.class, "CTL_DiffPanel_Title", file.getName())); // NOI18N
        tc.open();
        tc.requestActive();
    }
}