org.eclipse.egit.ui.internal.fetch.FetchSourcePage.java Source code

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Here is the source code for org.eclipse.egit.ui.internal.fetch.FetchSourcePage.java

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/*******************************************************************************
 * Copyright (C) 2011, Mathias Kinzler <mathias.kinzler@sap.com>
 *
 * 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
 *******************************************************************************/
package org.eclipse.egit.ui.internal.fetch;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.egit.core.op.ListRemoteOperation;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.UIPreferences;
import org.eclipse.egit.ui.UIUtils;
import org.eclipse.egit.ui.UIUtils.IRefListProvider;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.jgit.transport.URIish;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

/**
 * Obtain the Fetch Source, i.e. the {@link Ref} on the remote
 * {@link Repository}
 */
public class FetchSourcePage extends WizardPage {
    private final Repository repository;

    private final RemoteConfig config;

    private Text sourceText;

    private List<Ref> remoteRefs;

    /**
     * Default constructor
     *
     * @param repository
     * @param config
     */
    public FetchSourcePage(Repository repository, RemoteConfig config) {
        super(FetchSourcePage.class.getName());
        this.repository = repository;
        this.config = config;
        setTitle(UIText.FetchSourcePage_PageTitle);
    }

    public void createControl(Composite parent) {
        Composite main = new Composite(parent, SWT.NONE);
        main.setLayout(new GridLayout(2, false));
        GridDataFactory.fillDefaults().grab(true, true).applyTo(main);

        Label repositoryLabel = new Label(main, SWT.NONE);
        repositoryLabel.setText(UIText.FetchSourcePage_RepositoryLabel);
        Text repositoryText = new Text(main, SWT.READ_ONLY | SWT.BORDER);
        repositoryText.setText(config.getURIs().get(0).toPrivateString());
        GridDataFactory.fillDefaults().grab(true, false).applyTo(repositoryText);

        Label sourceLabel = new Label(main, SWT.NONE);
        sourceLabel.setText(UIText.FetchSourcePage_SourceLabel);
        sourceText = new Text(main, SWT.BORDER);
        sourceText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                checkPage();
            }
        });
        GridDataFactory.fillDefaults().grab(true, false).applyTo(sourceText);
        UIUtils.addRefContentProposalToText(sourceText, repository, new IRefListProvider() {
            public List<Ref> getRefList() {
                return getRemoteRefs();
            }
        });
        checkPage();
        setControl(main);
    }

    private void checkPage() {
        setMessage(null, IMessageProvider.WARNING);
        setErrorMessage(null);
        setMessage(UIText.FetchSourcePage_PageMessage);
        if (sourceText.getText().length() == 0) {
            setPageComplete(false);
            return;
        }
        boolean found = false;
        for (Ref ref : getRemoteRefs()) {
            if (ref.getName().equals(sourceText.getText()))
                found = true;
        }
        if (!found)
            setMessage(NLS.bind(UIText.FetchSourcePage_RefNotFoundMessage, sourceText.getText()),
                    IMessageProvider.WARNING);
        setPageComplete(true);
    }

    @Override
    public void setVisible(boolean visible) {
        super.setVisible(visible);
        if (visible)
            sourceText.setFocus();
    }

    /**
     * @return the source
     */
    public String getSource() {
        return sourceText.getText();
    }

    private List<Ref> getRemoteRefs() {
        if (remoteRefs == null) {
            URIish uriToCheck;
            List<Ref> proposals = new ArrayList<Ref>();
            uriToCheck = config.getURIs().get(0);
            final ListRemoteOperation lop = new ListRemoteOperation(repository, uriToCheck,
                    Activator.getDefault().getPreferenceStore().getInt(UIPreferences.REMOTE_CONNECTION_TIMEOUT));
            try {
                new ProgressMonitorDialog(getShell()).run(false, true, new IRunnableWithProgress() {
                    public void run(IProgressMonitor monitor)
                            throws InvocationTargetException, InterruptedException {
                        monitor.beginTask(UIText.FetchSourcePage_GettingRemoteRefsTaskname,
                                IProgressMonitor.UNKNOWN);
                        lop.run(monitor);
                        monitor.done();
                    }
                });
                for (Ref ref : lop.getRemoteRefs()) {
                    if (ref.getName().startsWith(Constants.R_HEADS) || ref.getName().startsWith(Constants.R_TAGS))
                        proposals.add(ref);
                }
                Collections.sort(proposals, new Comparator<Ref>() {
                    public int compare(Ref o1, Ref o2) {
                        return o1.getName().compareTo(o2.getName());
                    }
                });
                this.remoteRefs = proposals;
            } catch (IllegalStateException e) {
                setErrorMessage(e.getMessage());
            } catch (InvocationTargetException e) {
                setErrorMessage(e.getMessage());
            } catch (InterruptedException e) {
                setErrorMessage(e.getMessage());
            }
        }
        return remoteRefs;
    }
}