Android Open Source - interdroid-vdb-ui Manage Remotes 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  .ja v a2 s . c o  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.Actions;
import interdroid.vdb.Authority;
import interdroid.vdb.R;
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.RemoteInfo;
import interdroid.vdb.persistence.api.VdbRepository;
import interdroid.vdb.persistence.api.VdbRepositoryRegistry;
import interdroid.vdb.persistence.content.PeerRegistry;
import interdroid.vdb.persistence.content.PeerRegistry.Peer;
import interdroid.vdb.persistence.ui.EditPeerActivity.PeerInfo;

import java.io.IOException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.jgit.lib.ProgressMonitor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class ManageRemotesActivity extends ListActivity implements OnItemClickListener {
  private static final Logger logger = LoggerFactory
  .getLogger(ManageRemotesActivity.class);

  private VdbRepository vdbRepo_;

  private List<Map<String, Object>> mData;

  private SimpleAdapter mAdapter;
  private static final int REQUEST_MODIFY_REMOTES = 1;
  private static final int REQUEST_ADD_PEER = 2;
  private static final int DIALOG_SYNCHRONIZE = 1;
  private static final int MSG_PROGRESS = 1, MSG_START = 2, MSG_DONE = 3;
  // TODO: This should be a preference?
  private static final int CANCEL_TIMEOUT = 5000 /* ms */;

  private static final String REPO_DESC = "desc";
  private static final String REPO_NAME = "name";
  private static final String REPO_TYPE = "type";
  private static final String REPO_ADDRESS = "addr";

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

    final Intent intent = getIntent();
    final 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("Error getting repository", e);
      Toast.makeText(this, R.string.error_opening_repo, Toast.LENGTH_LONG);
      finish();
      return;
    }
    buildUI();
  }

  private void refreshList() {
    updateRemotesMap(mData);
    mAdapter.notifyDataSetChanged();
  }

  private void buildList()
  {
    mData =  updateRemotesMap(new ArrayList<Map<String, Object>>());
    mAdapter = new SimpleAdapter(this, mData,
        R.layout.manage_repo_item,
        new String [] {REPO_TYPE, REPO_NAME, REPO_DESC, REPO_ADDRESS},
        new int [] {R.id.manage_repo_type, R.id.manage_repo_name, R.id.manage_repo_desc, R.id.manage_repo_address});
    setListAdapter(mAdapter);
  }

  private List<Map<String, Object>> updateRemotesMap(List<Map<String, Object>> list) {
    list.clear();
    try {
      for (String remote : vdbRepo_.listRemotes()) {
        final RemoteInfo info = vdbRepo_.getRemoteInfo(remote);
        Map<String, Object> data = new HashMap<String, Object>();
        data.put(REPO_DESC, info.getDescription());
        data.put(REPO_NAME, info.getName());
        logger.debug("Type: {}", info.getRemoteUri().getScheme());
        data.put(REPO_TYPE,
            // TODO: Constant here for SmartSocketsScheme?
            "ss".equals(info.getRemoteUri().getScheme())  ?
                getString(R.string.label_peer) : getString(R.string.label_hub));
        data.put(REPO_ADDRESS, info.getRemoteUri());
        list.add(data);
      }
    } catch (IOException e) {
      Toast.makeText(this, R.string.error_loading_remotes, Toast.LENGTH_LONG).show();
      finish();
    }
    return list;
  }

  private void buildUI()
  {
    buildList();
    getListView().setOnCreateContextMenuListener(this);
    getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    getListView().setOnItemClickListener(this);

    syncDialog_ = new ProgressDialog(this);
    syncDialog_.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    syncDialog_.setTitle("Synchronizing");
    syncDialog_.setMessage("");
    syncDialog_.setButton(AlertDialog.BUTTON_NEGATIVE, "Cancel",
        new AlertDialog.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which)
      {
        syncThread_.cancel();
        syncDialog_.cancel();
      }
    });
    syncDialog_.setButton(AlertDialog.BUTTON_POSITIVE, "Ok",
        new AlertDialog.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which)
      {
        syncDialog_.dismiss();
      }
    });
  }

  // Menu item ids
  public static final int MENU_ITEM_ADD_PEER = Menu.FIRST;
  public static final int MENU_ITEM_ADD_HUB = Menu.FIRST + 1;

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);

    menu.add(0, MENU_ITEM_ADD_PEER, 0, getString(R.string.action_add_peer))
    .setShortcut('1', 'h')
    .setIcon(android.R.drawable.ic_menu_add);

    menu.add(1, MENU_ITEM_ADD_HUB, 0, getString(R.string.action_add_hub))
    .setShortcut('2', 'p')
    .setIcon(android.R.drawable.ic_menu_add);

    return true;
  }

  @Override
  protected void onActivityResult (int requestCode, int resultCode, Intent data)
  {
    if (requestCode == EditPeerActivity.ACTIVITY_SET_PREFERENCES) {
      EditPeerActivity.getLocalName(this);
    } else if (requestCode == REQUEST_ADD_PEER) {
      if (resultCode == RESULT_OK) {
        try {
          PeerInfo peerInfo = new PeerInfo(data.getStringExtra(Peer.NAME), data.getStringExtra(Peer.EMAIL), data.getStringExtra(Peer.DEVICE));
          EditPeerActivity.addPeerToRepository(this, peerInfo, vdbRepo_);
          refreshList();
        } catch (URISyntaxException e) {
          logger.error("URI Syntax error while adding peer.", e);
          Toast.makeText(this, R.string.error_toggling_peer, Toast.LENGTH_LONG).show();
        }
      }
    } else if (requestCode == REQUEST_MODIFY_REMOTES) {
      refreshList();
    }
  }

  private ProgressDialog syncDialog_;
  private SyncThread syncThread_;

  final Handler syncHandler_ = new Handler() {
    public void handleMessage(Message msg) {
      switch(msg.what) {
      case MSG_PROGRESS:
        syncDialog_.setMax(msg.arg2);
        syncDialog_.setProgress(msg.arg1);
        syncDialog_.setMessage(msg.obj.toString());
        break;
      case MSG_START:
        syncDialog_.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(true);
        syncDialog_.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
        break;
      case MSG_DONE:
        syncDialog_.getButton(AlertDialog.BUTTON_NEGATIVE).setEnabled(false);
        syncDialog_.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(true);
        syncDialog_.setMessage(msg.obj.toString());
        break;
      }
    }
  };

  private class SyncThread extends Thread implements ProgressMonitor {
    private boolean wasCanceled_, isDone_, startMessageSent_;
    private Handler uiHandler_;
    private String taskTitle_ = "Connecting";
    private int taskWork_ = 0, taskTotalWork_ = 1;
    private int currentTask_ = 0, totalTasks_ = 1;
    private String remoteName_;
    private long killTimeMillis;

    public SyncThread(Handler uiHandler, String remoteName)
    {
      uiHandler_ = uiHandler;
      remoteName_ = remoteName;
    }

    public void cancel()
    {
      wasCanceled_ = true;
      killTimeMillis = System.currentTimeMillis() + CANCEL_TIMEOUT;
      updateUi();
      uiHandler_ = null;
    }

    public boolean isDoneOrCanceled()
    {
      if (isDone_) {
        return true;
      }
      if (wasCanceled_ && isAlive()) {
        if (killTimeMillis < System.currentTimeMillis()) {
          interrupt();
          return true;
        } else {
          // If we have a stale thread .. we should try to interrupt it at least.
          return false;
        }
      }
      return wasCanceled_;
    }

    @Override
    public void run()
    {
      updateUi();
      try {
        vdbRepo_.pullFromRemote(remoteName_, this);
        vdbRepo_.pushToRemote(remoteName_, this);
        taskTitle_ = "Done";
      } catch(IOException e) {
        taskTitle_ = e.getMessage();
      }
      // we use a separate isDone_ flag next to the normal isAlive
      // in order to prevent race conditions, our last updateUi has to
      // arrive when we are finishing.
      isDone_ = true;
      updateUi();
    }

    private void updateUi()
    {
      if (uiHandler_ == null) {
        // in case of cancel we may have disconnected from the UI
        return;
      }
      if (!startMessageSent_) {
        uiHandler_.obtainMessage(MSG_START).sendToTarget();
        startMessageSent_ = true;
      }
      if (isDone_) {
        uiHandler_.obtainMessage(MSG_DONE, wasCanceled_ ? "Sync canceled" : taskTitle_)
        .sendToTarget();
      } else {
        String msg = String.format("[%d/%d] %s", currentTask_, totalTasks_, taskTitle_);
        uiHandler_.obtainMessage(MSG_PROGRESS, taskWork_, taskTotalWork_, msg)
        .sendToTarget();
      }
    }

    @Override
    public void beginTask(String title, int totalWork)
    {
      taskTitle_ = title;
      taskWork_ = 0;
      taskTotalWork_ = totalWork < 1 ? 1 : totalWork;
      updateUi();
    }

    @Override
    public void endTask()
    {
      taskWork_ = taskTotalWork_;
      ++currentTask_;
      updateUi();
    }

    @Override
    public boolean isCancelled()
    {
      return wasCanceled_;
    }

    @Override
    public void start(int totalTasks)
    {
      totalTasks_ = totalTasks < 1 ? 1 : totalTasks;
      updateUi();
    }

    @Override
    public void update(int completed)
    {
      taskWork_ += completed;
      taskWork_ = taskWork_ < 0 ? 0 : taskWork_;
      taskWork_ = taskWork_ > taskTotalWork_ ? taskTotalWork_ : taskWork_;
      updateUi();
    }
  }

  @Override
  protected Dialog onCreateDialog(int id) {
    switch(id) {
    case DIALOG_SYNCHRONIZE:
      return syncDialog_;
    default:
      return null;
    }
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == MENU_ITEM_ADD_PEER) {
      Intent addPeerIntent = new Intent(Intent.ACTION_PICK, PeerRegistry.URI);
      startActivityForResult(addPeerIntent, REQUEST_ADD_PEER);
      return true;
    }
    if (item.getItemId() == MENU_ITEM_ADD_HUB) {
      Intent addHubIntent = new Intent(Actions.ACTION_ADD_REMOTE,
          getIntent().getData());
      startActivityForResult(addHubIntent, REQUEST_MODIFY_REMOTES);
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
      long id) {
    final int EDIT = 0;
    final int SYNC = 1;
    final int REMOVE = 2;

    @SuppressWarnings("unchecked")
    final Map<String, Object> data = (Map<String, Object>) getListAdapter().getItem(position);
    final String remote = (String) data.get(REPO_NAME);

    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(getString(R.string.title_peer_actions));
    final Intent editIntent;

    CharSequence[] items;
    if (data.get(REPO_TYPE).equals(getString(R.string.label_peer))) {
      items = new String[] {getString(R.string.action_edit_peer),
          getString(R.string.action_sync_peer), getString(R.string.action_remove_peer)};
      editIntent = new Intent(Intent.ACTION_EDIT, PeerRegistry.URI);
    } else {
      items = new String[] {getString(R.string.action_edit_hub),
          getString(R.string.action_sync_hub), getString(R.string.action_remove_hub)};
      editIntent = new Intent(Intent.ACTION_EDIT,
          EntityUriBuilder.remoteUri(Authority.VDB, vdbRepo_.getName(), remote));
    }

    builder.setItems(items, new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int item) {
        switch (item) {
        case EDIT:
          startActivityForResult(editIntent, REQUEST_MODIFY_REMOTES);
          break;
        case SYNC:
          // TODO: Queue sync with service instead.
          if (syncThread_ != null && !syncThread_.isDoneOrCanceled()) {
            // do not allow multiple syncs at the same time
            Toast.makeText(ManageRemotesActivity.this, R.string.error_sync_in_progress, Toast.LENGTH_LONG).show();
          } else {
            syncThread_ = new SyncThread(syncHandler_, remote);
            syncThread_.start();
            showDialog(DIALOG_SYNCHRONIZE);
          }
          break;
        case REMOVE:
          try {
            vdbRepo_.deleteRemote(remote);
            refreshList();
          } catch (IOException e) {
            logger.error("Unable to remove remote.", e);
            Toast.makeText(ManageRemotesActivity.this, R.string.error_removing_remote, Toast.LENGTH_LONG).show();
          }
          break;
        }
      }
    });

    AlertDialog alert = builder.create();
    alert.show();
  }

}
Java Source Code List
