Add a controller for contact selection lists

briar-android/src/org/briarproject/android/contactselection/ContactSelectorFragment.java

@@ -0,0 +1,89 @@
+package org.briarproject.android.contactselection;
+
+import android.os.Bundle;
+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 org.briarproject.R;
+import org.briarproject.android.ActivityComponent;
+import org.briarproject.android.contact.BaseContactListAdapter.OnContactClickListener;
+import org.briarproject.api.sync.GroupId;
+
+import static org.briarproject.api.sharing.SharingConstants.GROUP_ID;
+
+public class ContactSelectorFragment extends
+		BaseContactSelectorFragment<SelectableContactItem, SelectableContactHolder>
+		implements OnContactClickListener<SelectableContactItem> {
+
+	public static final String TAG = ContactSelectorFragment.class.getName();
+
+	private Menu menu;
+
+	public static ContactSelectorFragment newInstance(GroupId groupId) {
+		Bundle args = new Bundle();
+		args.putByteArray(GROUP_ID, groupId.getBytes());
+		ContactSelectorFragment fragment = new ContactSelectorFragment();
+		fragment.setArguments(args);
+		return fragment;
+	}
+
+	@Override
+	public void injectFragment(ActivityComponent component) {
+		component.inject(this);
+	}
+
+	@Override
+	public View onCreateView(LayoutInflater inflater, ViewGroup container,
+			Bundle savedInstanceState) {
+		View contentView =
+				super.onCreateView(inflater, container, savedInstanceState);
+		adapter = new ContactSelectorAdapter(getActivity(), this);
+		list.setAdapter(adapter);
+		return contentView;
+	}
+
+	@Override
+	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+		inflater.inflate(R.menu.contact_selection_actions, menu);
+		super.onCreateOptionsMenu(menu, inflater);
+		this.menu = menu;
+		// hide sharing action initially, if no contact is selected
+		onSelectionChanged();
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(final MenuItem item) {
+		switch (item.getItemId()) {
+			case R.id.action_contacts_selected:
+				selectedContacts = adapter.getSelectedContactIds();
+				listener.contactsSelected(selectedContacts);
+				return true;
+			default:
+				return super.onOptionsItemSelected(item);
+		}
+	}
+
+	@Override
+	public String getUniqueTag() {
+		return TAG;
+	}
+
+	@Override
+	protected void onSelectionChanged() {
+		if (menu == null) return;
+		MenuItem item = menu.findItem(R.id.action_contacts_selected);
+		if (item == null) return;
+
+		selectedContacts = adapter.getSelectedContactIds();
+		if (selectedContacts.size() > 0) {
+			item.setVisible(true);
+		} else {
+			item.setVisible(false);
+		}
+	}
+
+}