Android Open Source - interdroid-vdb-ui Add Branch Activity

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The source code is released under:
Copyright (c) 2008-2011 Vrije Universiteit, The Netherlands All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the follo...
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Java Source Code

/*
 * Copyright (c) 2008-2012 Vrije Universiteit, The Netherlands All rights
 * reserved./*from   w  w  w.  j a  va2s  . co m*/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the Vrije Universiteit nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package interdroid.vdb.persistence.ui;

import interdroid.vdb.content.EntityUriBuilder;
import interdroid.vdb.content.EntityUriMatcher;
import interdroid.vdb.content.EntityUriMatcher.MatchType;
import interdroid.vdb.content.EntityUriMatcher.UriMatch;
import interdroid.vdb.persistence.api.VdbRepository;
import interdroid.vdb.persistence.api.VdbRepositoryRegistry;

import java.io.IOException;

import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import interdroid.vdb.Authority;
import interdroid.vdb.R;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class AddBranchActivity extends Activity implements OnClickListener {
  private static final Logger logger = LoggerFactory
      .getLogger(AddBranchActivity.class);

  private static final int REQUEST_PICK_VERSION = 1;

  static final String EXTRA_SELECTED_VERSION = "version";

  private UriMatch chosenBase_;
  private VdbRepository vdbRepo_;
  private EditText editRevision_, editName_;
  private Button btnCreate_, btnCancel_, btnPick_;

  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);

    final Intent intent = getIntent();
    UriMatch match = EntityUriMatcher.getMatch(intent.getData());

    if (match.type != MatchType.REPOSITORY) {
      throw new RuntimeException("Invalid URI, can only add branches to a repository. "
          + intent.getData());
    }
    try {
      vdbRepo_ = VdbRepositoryRegistry.getInstance().getRepository(this, match.repositoryName);
    } catch (IOException e) {
      logger.error("Unable to get repository", e);
      Toast.makeText(this, R.string.error_adding_branch, Toast.LENGTH_LONG);
      finish();
      return;
    }

    buildUI();
    if (intent.hasExtra(EXTRA_SELECTED_VERSION)) {
      Uri version = Uri.parse(intent.getStringExtra(EXTRA_SELECTED_VERSION));
      setChosenRevision(version);
    }
  }

  private void buildUI()
  {
    setTitle("Create new branch");
    setContentView(R.layout.add_branch_dialog);

    editRevision_ = (EditText) findViewById(R.id.revision);
    editName_ = (EditText) findViewById(R.id.branch_name);

    btnCreate_ = (Button) findViewById(R.id.create);
    btnCancel_ = (Button) findViewById(R.id.cancel);
    btnPick_ = (Button) findViewById(R.id.pick_revision);

    btnCreate_.setOnClickListener(this);
    btnCancel_.setOnClickListener(this);
    btnPick_.setOnClickListener(this);
  }

  @Override
  protected void onActivityResult (int requestCode, int resultCode, Intent data)
  {
    if (resultCode == RESULT_OK && requestCode == REQUEST_PICK_VERSION) {
      setChosenRevision(data.getData());
    }
  }

  private void setChosenRevision(Uri version) {
    chosenBase_ = EntityUriMatcher.getMatch(version);
    String text;
    switch(chosenBase_.type) {
    case COMMIT:
      text = "sha1: " + chosenBase_.reference;
      break;
    case LOCAL_BRANCH:
      text = "local: " + chosenBase_.reference;
      break;
    case REMOTE_BRANCH:
      text = "remote: " + chosenBase_.reference;
      break;
    default:
      Toast.makeText(this, R.string.error_invalid_version, Toast.LENGTH_LONG).show();
      editRevision_.setText(null);
      chosenBase_ = null;
      return;
    }
    editRevision_.setText(text);
  }

  @Override
  public void onClick(View v)
  {
    if (v == btnCreate_) {
//      VdbRepositoryImpl impl = (VdbRepositoryImpl) vdbRepo_;

      String name = editName_.getText().toString();
      if (verifyCreateInputs(name)) {
        try {
          vdbRepo_.createBranch(name, chosenBase_.reference);

          Intent result = new Intent(Intent.ACTION_DEFAULT,
              EntityUriBuilder.branchUri(Authority.VDB, vdbRepo_.getName(), name));
          setResult(RESULT_OK, result);
          finish();
        } catch(IOException e) {
          throw new RuntimeException(e);
        }
      }
    } else if (v == btnPick_) {
      /* launch the RevisionPicker activity */
      Intent intent = new Intent(Intent.ACTION_PICK,  getIntent().getData());
      startActivityForResult(intent, REQUEST_PICK_VERSION);
    } else if (v == btnCancel_) {
      finish();
    }
  }

  private boolean verifyCreateInputs(String name) {
    if ( verifyBaseRevision() && verifyBranchName(name) ) {
      return true;
    }
    return false;
  }

  private boolean verifyBaseRevision() {
    if (chosenBase_ == null) {
      Toast.makeText(this, "Please pick a base revision.",
          Toast.LENGTH_SHORT).show();
      return false;
    }
    return true;
  }

  private boolean verifyBranchName(String name) {
    if (!Repository.isValidRefName(Constants.R_REFS + name)
        || name.contains("/")) {
      Toast.makeText(this, "Invalid branch name.", Toast.LENGTH_SHORT)
      .show();
      return false;
    }
    try {
      if (vdbRepo_.listBranches().contains(name)) {
        Toast.makeText(this, "Branch " + name + " already exists.",
            Toast.LENGTH_SHORT).show();
        return false;
      }
    } catch(IOException e) {
      throw new RuntimeException(e);
    }
    return true;
  }
}
Java Source Code List
