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path: root/src/eu/siacs/conversations/ui/ContactsActivity.java
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package eu.siacs.conversations.ui;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.Account;
import eu.siacs.conversations.entities.Contact;
import eu.siacs.conversations.entities.Conversation;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.UIHelper;
import eu.siacs.conversations.utils.Validator;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.SparseBooleanArray;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.ImageView;
import android.widget.Toast;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;

public class ContactsActivity extends XmppActivity {

	protected List<Contact> rosterContacts = new ArrayList<Contact>();
	protected List<Contact> aggregatedContacts = new ArrayList<Contact>();
	protected ListView contactsView;
	protected ArrayAdapter<Contact> contactsAdapter;

	protected EditText search;
	protected String searchString = "";
	private TextView contactsHeader;
	private List<Account> accounts;
	private List<Contact> selectedContacts = new ArrayList<Contact>();
	
	private ContactsActivity activity = this;

	private boolean useSubject = true;
	private boolean isActionMode = false;
	private boolean inviteIntent = false;
	private ActionMode actionMode = null;
	private AbsListView.MultiChoiceModeListener actionModeCallback = new AbsListView.MultiChoiceModeListener() {

		@Override
		public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
			menu.clear();
			MenuInflater inflater = mode.getMenuInflater();
			inflater.inflate(R.menu.newconversation_context, menu);
			SparseBooleanArray checkedItems = contactsView
					.getCheckedItemPositions();
			selectedContacts.clear();
			for (int i = 0; i < aggregatedContacts.size(); ++i) {
				if (checkedItems.get(i, false)) {
					selectedContacts.add(aggregatedContacts.get(i));
				}
			}
			if (selectedContacts.size() == 0) {
				menu.findItem(R.id.action_start_conversation).setVisible(false);
				menu.findItem(R.id.action_contact_details).setVisible(false);
				menu.findItem(R.id.action_invite).setVisible(false);
				menu.findItem(R.id.action_invite_to_existing).setVisible(false);
			} else if ((selectedContacts.size() == 1) && (!inviteIntent)) {
				menu.findItem(R.id.action_start_conversation).setVisible(true);
				menu.findItem(R.id.action_contact_details).setVisible(true);
				menu.findItem(R.id.action_invite).setVisible(false);
				menu.findItem(R.id.action_invite_to_existing).setVisible(true);
			} else if (!inviteIntent) {
				menu.findItem(R.id.action_start_conversation).setVisible(true);
				menu.findItem(R.id.action_contact_details).setVisible(false);
				menu.findItem(R.id.action_invite).setVisible(false);
				menu.findItem(R.id.action_invite_to_existing).setVisible(true);
			} else {
				menu.findItem(R.id.action_invite).setVisible(true);
				menu.findItem(R.id.action_start_conversation).setVisible(false);
				menu.findItem(R.id.action_contact_details).setVisible(false);
				menu.findItem(R.id.action_invite_to_existing).setVisible(false);
			}
			return true;
		}

		@Override
		public void onDestroyActionMode(ActionMode mode) {
			// TODO Auto-generated method stub

		}

		@Override
		public boolean onCreateActionMode(ActionMode mode, Menu menu) {
			return true;
		}

		@Override
		public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
			switch (item.getItemId()) {
			case R.id.action_start_conversation:
				if (selectedContacts.size() == 1) {
					startConversation(selectedContacts.get(0));
				} else {
					startConference();
				}
				break;
			case R.id.action_contact_details:
				Intent intent = new Intent(getApplicationContext(),
						ContactDetailsActivity.class);
				intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
				intent.putExtra("account", selectedContacts.get(0).getAccount().getJid());
				intent.putExtra("contact",selectedContacts.get(0).getJid());
				startActivity(intent);
				finish();
				break;
			case R.id.action_invite:
				invite();
				break;
			case R.id.action_invite_to_existing:
				final List<Conversation> mucs = new ArrayList<Conversation>();
				for(Conversation conv : xmppConnectionService.getConversations()) {
					if (conv.getMode() == Conversation.MODE_MULTI) {
						mucs.add(conv);
					}
				}
				AlertDialog.Builder builder = new AlertDialog.Builder(activity);
				builder.setTitle(getString(R.string.invite_contacts_to_existing));
				if (mucs.size() >= 1) {
					String[] options = new String[mucs.size()];
					for(int i = 0; i < options.length; ++i) {
						options[i] = mucs.get(i).getName(useSubject);
					}
					builder.setItems(options, new OnClickListener() {
						
						@Override
						public void onClick(DialogInterface dialog, int which) {
							Conversation conversation = mucs.get(which);
							if (isOnline(conversation.getAccount())) {
								xmppConnectionService.inviteToConference(conversation, selectedContacts);
								Toast.makeText(activity, getString(R.string.invitation_sent), Toast.LENGTH_SHORT).show();
								actionMode.finish();
							}
						}
					});
				} else {
					builder.setMessage(getString(R.string.no_open_mucs));
				}
				builder.setNegativeButton(getString(R.string.cancel),null);
				builder.create().show();
				break;
			default:
				break;
			}
			return false;
		}

		@Override
		public void onItemCheckedStateChanged(ActionMode mode, int position,
				long id, boolean checked) {
		}
	};

	private boolean isOnline(Account account) {
		if (account.getStatus() == Account.STATUS_ONLINE) {
			return true;
		} else {
			AlertDialog.Builder builder = new AlertDialog.Builder(this);
			builder.setTitle(getString(R.string.account_offline));
			builder.setMessage(getString(R.string.cant_invite_while_offline));
			builder.setNegativeButton(getString(R.string.ok), null);
			builder.setIconAttribute(android.R.attr.alertDialogIcon);
			builder.create().show();
			return false;
		}
	}
	
	private void invite() {
		List<Conversation> conversations = xmppConnectionService
				.getConversations();
		Conversation conversation = null;
		for (Conversation tmpConversation : conversations) {
			if (tmpConversation.getUuid().equals(
					getIntent().getStringExtra("uuid"))) {
				conversation = tmpConversation;
				break;
			}
		}
		if (conversation != null) {
			xmppConnectionService.inviteToConference(conversation,
					selectedContacts);
		}
		finish();
	}

	private void startConference() {
		if (accounts.size() > 1) {
			getAccountChooser(new OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					startConference(accounts.get(which));
				}
			}).show();
		} else {
			startConference(accounts.get(0));
		}

	}

	private void startConference(final Account account) {
		if (isOnline(account)) {
			AlertDialog.Builder builder = new AlertDialog.Builder(this);
			builder.setTitle(getString(R.string.new_conference));
			builder.setMessage(getString(R.string.new_conference_explained));
			builder.setNegativeButton(getString(R.string.cancel), null);
			builder.setPositiveButton(getString(R.string.create_invite),
					new OnClickListener() {
	
						@Override
						public void onClick(DialogInterface dialog, int which) {
							String mucName = CryptoHelper.randomMucName(xmppConnectionService.getRNG());
							String serverName = account.getXmppConnection()
									.getMucServer();
							if (serverName==null) {
								List<String> servers = getMucServers();
								if (servers.size() >= 1) {
									serverName = servers.get(0);
								} else {
									displayErrorDialog(R.string.no_muc_server_found);
									return;
								}
							}
							String jid = mucName + "@" + serverName;
							Conversation conversation = xmppConnectionService
									.findOrCreateConversation(account, jid, true);
							StringBuilder subject = new StringBuilder();
							subject.append(account.getUsername() + ", ");
							for (int i = 0; i < selectedContacts.size(); ++i) {
								if (i + 1 != selectedContacts.size()) {
									subject.append(selectedContacts.get(i)
											.getDisplayName() + ", ");
								} else {
									subject.append(selectedContacts.get(i)
											.getDisplayName());
								}
							}
							xmppConnectionService.sendConversationSubject(
									conversation, subject.toString());
							xmppConnectionService.inviteToConference(conversation,
									selectedContacts);
							switchToConversation(conversation, null,false);
						}
					});
			builder.create().show();
		}
	}

	protected void updateAggregatedContacts() {

		aggregatedContacts.clear();
		for (Contact contact : rosterContacts) {
			if (contact.match(searchString)&&(contact.showInRoster()))
				aggregatedContacts.add(contact);
		}

		Collections.sort(aggregatedContacts, new Comparator<Contact>() {

			@SuppressLint("DefaultLocale")
			@Override
			public int compare(Contact lhs, Contact rhs) {
				return lhs.getDisplayName().toLowerCase()
						.compareTo(rhs.getDisplayName().toLowerCase());
			}
		});

		if (aggregatedContacts.size() == 0) {

			if (Validator.isValidJid(searchString)) {
				Contact newContact = new Contact(searchString);
				newContact.resetOption(Contact.Options.IN_ROSTER);
				aggregatedContacts.add(newContact);
				contactsHeader.setText(getString(R.string.new_contact));
			} else {
				contactsHeader.setText(getString(R.string.contacts));
			}
		} else {
			contactsHeader.setText(getString(R.string.contacts));
		}

		contactsAdapter.notifyDataSetChanged();
		contactsView.setScrollX(0);
	}

	private OnItemLongClickListener onLongClickListener = new OnItemLongClickListener() {

		@Override
		public boolean onItemLongClick(AdapterView<?> arg0, View view,
				int position, long arg3) {
			if (!isActionMode) {
				contactsView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
				contactsView.setItemChecked(position, true);
				actionMode = contactsView.startActionMode(actionModeCallback);
			}
			return true;
		}
	};

	@Override
	protected void onStart() {
		super.onStart();
		SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
		this.useSubject = preferences.getBoolean("use_subject_in_muc", true);
		inviteIntent = "invite".equals(getIntent().getAction());
		if (inviteIntent) {
			contactsHeader.setVisibility(View.GONE);
			actionMode = contactsView.startActionMode(actionModeCallback);
			search.setVisibility(View.GONE);
		}
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_new_conversation);

		contactsHeader = (TextView) findViewById(R.id.contacts_header);

		search = (EditText) findViewById(R.id.new_conversation_search);
		search.addTextChangedListener(new TextWatcher() {

			@Override
			public void onTextChanged(CharSequence s, int start, int before,
					int count) {
				searchString = search.getText().toString();
				updateAggregatedContacts();
			}

			@Override
			public void afterTextChanged(Editable s) {
				// TODO Auto-generated method stub

			}

			@Override
			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {
				// TODO Auto-generated method stub

			}
		});

		contactsView = (ListView) findViewById(R.id.contactList);
		contactsAdapter = new ArrayAdapter<Contact>(getApplicationContext(),
				R.layout.contact, aggregatedContacts) {
			@Override
			public View getView(int position, View view, ViewGroup parent) {
				LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
				Contact contact = getItem(position);
				if (view == null) {
					view = (View) inflater.inflate(R.layout.contact, null);
				}

				((TextView) view.findViewById(R.id.contact_display_name))
						.setText(getItem(position).getDisplayName());
				TextView contactJid = (TextView) view
						.findViewById(R.id.contact_jid);
				contactJid.setText(contact.getJid());
				ImageView imageView = (ImageView) view
						.findViewById(R.id.contact_photo);
				imageView.setImageBitmap(UIHelper.getContactPicture(contact, 48, this.getContext(), false));
				return view;
			}
		};
		contactsView.setAdapter(contactsAdapter);
		contactsView.setMultiChoiceModeListener(actionModeCallback);
		contactsView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, final View view,
					int pos, long arg3) {
				if (!isActionMode) {
					Contact clickedContact = aggregatedContacts.get(pos);
					startConversation(clickedContact);

				} else {
					actionMode.invalidate();
				}
			}
		});
		contactsView.setOnItemLongClickListener(this.onLongClickListener);
	}

	public void startConversation(final Contact contact) {
		if ((contact.getAccount() == null) && (accounts.size() > 1)) {
			getAccountChooser(new OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					contact.setAccount(accounts.get(which));
					showIsMucDialogIfNeeded(contact);
				}
			}).show();
		} else {
			if (contact.getAccount() == null) {
				contact.setAccount(accounts.get(0));
			}
			showIsMucDialogIfNeeded(contact);
		}
	}

	protected AlertDialog getAccountChooser(OnClickListener listener) {
		String[] accountList = new String[accounts.size()];
		for (int i = 0; i < accounts.size(); ++i) {
			accountList[i] = accounts.get(i).getJid();
		}

		AlertDialog.Builder accountChooser = new AlertDialog.Builder(this);
		accountChooser.setTitle(getString(R.string.choose_account));
		accountChooser.setItems(accountList, listener);
		return accountChooser.create();
	}

	public void showIsMucDialogIfNeeded(final Contact clickedContact) {
		if (isMuc(clickedContact)) {
			startConversation(clickedContact,clickedContact.getAccount(), true);
		} else if (clickedContact.couldBeMuc()) {
			AlertDialog.Builder dialog = new AlertDialog.Builder(this);
			dialog.setTitle(getString(R.string.multi_user_conference));
			dialog.setMessage(getString(R.string.trying_join_conference));
			dialog.setPositiveButton(getString(R.string.yes), new OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					startConversation(clickedContact,
							clickedContact.getAccount(), true);
				}
			});
			dialog.setNegativeButton(getString(R.string.no), new OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					startConversation(clickedContact,
							clickedContact.getAccount(), false);
				}
			});
			dialog.create().show();
		} else {
			startConversation(clickedContact, clickedContact.getAccount(),
					false);
		}
	}
	
	private List<String> getMucServers() {
		ArrayList<String> mucServers = new ArrayList<String>();
		for(Account account : accounts) {
			if (account.getXmppConnection()!=null) {
				String server = account.getXmppConnection().getMucServer();
				if (server!=null) {
					mucServers.add(server);
				}
			}
		}
		return mucServers;
	}
	
	private boolean isMuc(Contact contact) {
		String server = contact.getJid().split("@")[1];
		return getMucServers().contains(server);
	}

	public void startConversation(Contact contact, Account account, boolean muc) {
		if (!contact.getOption(Contact.Options.IN_ROSTER)&&(!muc)) {
			xmppConnectionService.createContact(contact);
		}
		Conversation conversation = xmppConnectionService
				.findOrCreateConversation(account, contact.getJid(), muc);

		switchToConversation(conversation, null,false);
	}

	@Override
	void onBackendConnected() {
		this.accounts = xmppConnectionService.getAccounts();
		if (Intent.ACTION_SENDTO.equals(getIntent().getAction())) {
			getActionBar().setDisplayHomeAsUpEnabled(false);
			getActionBar().setHomeButtonEnabled(false);
			String jid;
			try {
				jid = URLDecoder.decode(getIntent().getData().getEncodedPath(),
						"UTF-8").split("/")[1];
			} catch (UnsupportedEncodingException e) {
				jid = null;
			}
			if (jid != null) {
				final String finalJid = jid;
				if (this.accounts.size() > 1) {
					getAccountChooser(new OnClickListener() {

						@Override
						public void onClick(DialogInterface dialog, int which) {
							Conversation conversation = xmppConnectionService
									.findOrCreateConversation(
											accounts.get(which), finalJid,
											false);
							switchToConversation(conversation, null,false);
							finish();
						}
					}).show();
				} else {
					Conversation conversation = xmppConnectionService
							.findOrCreateConversation(this.accounts.get(0),
									jid, false);
					switchToConversation(conversation, null,false);
					finish();
				}
			}
		}

		if (xmppConnectionService.getConversationCount() == 0) {
			getActionBar().setDisplayHomeAsUpEnabled(false);
			getActionBar().setHomeButtonEnabled(false);
		}
		this.rosterContacts.clear();
		for(Account account : accounts) {
			if (account.getStatus() != Account.STATUS_DISABLED) {
				rosterContacts.addAll(account.getRoster().getContacts());
			}
		}
		updateAggregatedContacts();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.newconversation, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		default:
			break;
		}
		return super.onOptionsItemSelected(item);
	}

	@Override
	public void onActionModeStarted(ActionMode mode) {
		super.onActionModeStarted(mode);
		this.isActionMode = true;
		search.setEnabled(false);
	}

	@Override
	public void onActionModeFinished(ActionMode mode) {
		super.onActionModeFinished(mode);
		if (inviteIntent) {
			finish();
		} else {
			this.isActionMode = false;
			contactsView.clearChoices();
			contactsView.requestLayout();
			contactsView.post(new Runnable() {
				@Override
				public void run() {
					contactsView.setChoiceMode(ListView.CHOICE_MODE_NONE);
				}
			});
			search.setEnabled(true);
		}
	}

}