com.chungkwong.jgitgui.LogTreeItem.java Source code

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Here is the source code for com.chungkwong.jgitgui.LogTreeItem.java

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/*
 * Copyright (C) 2016 Chan Chung Kwong <1m02math@126.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.chungkwong.jgitgui;

import java.io.*;
import java.util.*;
import java.util.logging.*;
import java.util.stream.*;
import javafx.event.*;
import javafx.scene.Node;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import org.eclipse.jgit.api.*;
import org.eclipse.jgit.api.errors.*;
import org.eclipse.jgit.diff.*;
import org.eclipse.jgit.errors.*;
import org.eclipse.jgit.lib.*;
import org.eclipse.jgit.revwalk.*;
import org.eclipse.jgit.treewalk.*;

/**
 *
 * @author Chan Chung Kwong <1m02math@126.com>
 */
public class LogTreeItem extends TreeItem<Object> implements NavigationTreeItem {
    public LogTreeItem(Git git) throws GitAPIException {
        super(java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString("COMMIT"));
        try {
            for (RevCommit rev : git.log().call()) {
                getChildren().add(new CommitTreeItem(rev));
            }
        } catch (NoHeadException ex) {
        }
    }

    @Override
    public String toString() {
        return java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString("COMMIT");
    }

    @Override
    public MenuItem[] getContextMenuItems() {
        return new MenuItem[0];
    }

    private RevCommit toRevCommit(ObjectId id)
            throws MissingObjectException, IncorrectObjectTypeException, GitAPIException {
        return ((Git) getParent().getValue()).log().addRange(id, id).call().iterator().next();
    }

    @Override
    public Node getContentPage() {
        GridPane page = new GridPane();
        TextField oldSrc = new TextField();
        TextField newSrc = new TextField();
        CheckBox detailed = new CheckBox(
                java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString("DETAILED"));
        Button ok = new Button(java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString("DIFF"));
        TextArea diff = new TextArea();
        diff.setEditable(false);
        Git git = ((Git) getParent().getValue());
        GridPane.setVgrow(diff, Priority.ALWAYS);
        GridPane.setHgrow(diff, Priority.ALWAYS);
        GridPane.setHgrow(oldSrc, Priority.ALWAYS);
        GridPane.setHgrow(newSrc, Priority.ALWAYS);
        ok.setOnAction((ActionEvent e) -> {
            try (ObjectReader reader = git.getRepository().newObjectReader()) {
                List<DiffEntry> entries;
                if (oldSrc.getText().isEmpty() && newSrc.getText().isEmpty()) {
                    entries = ((Git) getParent().getValue()).diff().setCached(true).call();
                } else {
                    CanonicalTreeParser oldTreeIter = new CanonicalTreeParser();
                    oldTreeIter.reset(reader, git.getRepository().resolve(oldSrc.getText() + "^{tree}"));
                    CanonicalTreeParser newTreeIter = new CanonicalTreeParser();
                    newTreeIter.reset(reader, git.getRepository().resolve(newSrc.getText() + "^{tree}"));
                    entries = ((Git) getParent().getValue()).diff().setNewTree(newTreeIter).setOldTree(oldTreeIter)
                            .call();
                }
                if (detailed.isSelected()) {
                    PipedInputStream in = new PipedInputStream();
                    PipedOutputStream out = new PipedOutputStream(in);
                    DiffFormatter formatter = new DiffFormatter(out);
                    formatter.setRepository(git.getRepository());
                    formatter.format(entries);
                    out.close();
                    diff.setText(new BufferedReader(new InputStreamReader(in)).lines()
                            .collect(Collectors.joining("\n")));
                } else {
                    diff.setText(entries.stream().map((o) -> toString(o)).collect(Collectors.joining("\n")));
                }
            } catch (Exception ex) {
                Logger.getLogger(LogTreeItem.class.getName()).log(Level.SEVERE, null, ex);
                Util.informUser(ex);
            }
        });
        page.addColumn(0, oldSrc, newSrc, detailed, ok, diff);

        page.setMaxSize(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
        return page;
    }

    private static String toString(DiffEntry entry) {
        switch (entry.getChangeType()) {
        case ADD:
            return entry.getNewPath()
                    + java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString(" ADDED");
        case COPY:
            return entry.getOldPath()
                    + java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString(" COPIED TO ")
                    + entry.getNewPath();
        case DELETE:
            return entry.getOldPath()
                    + java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString(" REMOVED");
        case MODIFY:
            return entry.getOldPath()
                    + java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString(" MODIFIED");
        case RENAME:
            return entry.getOldPath()
                    + java.util.ResourceBundle.getBundle("com/chungkwong/jgitgui/text").getString(" RENAMED TO ")
                    + entry.getNewPath();
        default:
            return "";
        }
    }
}