Java tutorial
/** * ownCloud Android client application * * @author masensio * @author David A. Velasco * Copyright (C) 2015 ownCloud Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package com.owncloud.android.ui.fragment; import android.accounts.Account; import android.app.Activity; import android.app.SearchManager; import android.content.Context; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.ListView; import android.widget.SearchView; import com.owncloud.android.R; import com.owncloud.android.datamodel.OCFile; import com.owncloud.android.lib.common.utils.Log_OC; import com.owncloud.android.lib.resources.shares.OCShare; import com.owncloud.android.ui.activity.FileActivity; import com.owncloud.android.ui.activity.ShareActivity; import com.owncloud.android.ui.adapter.ShareUserListAdapter; import java.util.ArrayList; /** * Fragment for Searching sharees (users and groups) * * A simple {@link Fragment} subclass. * * Activities that contain this fragment must implement the * {@link SearchShareesFragment.OnSearchFragmentInteractionListener} interface * to handle interaction events. * * Use the {@link SearchShareesFragment#newInstance} factory method to * create an instance of this fragment. */ public class SearchShareesFragment extends Fragment implements ShareUserListAdapter.ShareUserAdapterListener { private static final String TAG = SearchShareesFragment.class.getSimpleName(); // the fragment initialization parameters private static final String ARG_FILE = "FILE"; private static final String ARG_ACCOUNT = "ACCOUNT"; // Parameters private OCFile mFile; private Account mAccount; // other members private ArrayList<OCShare> mShares; private ShareUserListAdapter mUserGroupsAdapter = null; private OnSearchFragmentInteractionListener mListener; /** * Public factory method to create new SearchShareesFragment instances. * * @param fileToShare An {@link OCFile} to be shared * @param account The ownCloud account containing fileToShare * @return A new instance of fragment SearchShareesFragment. */ public static SearchShareesFragment newInstance(OCFile fileToShare, Account account) { SearchShareesFragment fragment = new SearchShareesFragment(); Bundle args = new Bundle(); args.putParcelable(ARG_FILE, fileToShare); args.putParcelable(ARG_ACCOUNT, account); fragment.setArguments(args); return fragment; } public SearchShareesFragment() { // Required empty public constructor } /** * {@inheritDoc} */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments() != null) { mFile = getArguments().getParcelable(ARG_FILE); mAccount = getArguments().getParcelable(ARG_ACCOUNT); } } /** * {@inheritDoc} */ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View view = inflater.inflate(R.layout.search_users_groups_layout, container, false); // Get the SearchView and set the searchable configuration SearchView searchView = (SearchView) view.findViewById(R.id.searchView); SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE); searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()) // assumes parent activity is the searchable activity ); searchView.setIconifiedByDefault(false); // do not iconify the widget; expand it by default searchView.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI); // avoid fullscreen with softkeyboard searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @Override public boolean onQueryTextSubmit(String query) { Log_OC.v(TAG, "onQueryTextSubmit intercepted, query: " + query); return true; // return true to prevent the query is processed to be queried; // a user / group will be picked only if selected in the list of suggestions } @Override public boolean onQueryTextChange(String newText) { return false; // let it for the parent listener in the hierarchy / default behaviour } }); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // Load data into the list refreshUsersOrGroupsListFromDB(); } /** * Get users and groups from the DB to fill in the "share with" list * * Depends on the parent Activity provides a {@link com.owncloud.android.datamodel.FileDataStorageManager} * instance ready to use. If not ready, does nothing. */ public void refreshUsersOrGroupsListFromDB() { // Get Users and Groups if (((FileActivity) mListener).getStorageManager() != null) { mShares = ((FileActivity) mListener).getStorageManager().getSharesWithForAFile(mFile.getRemotePath(), mAccount.name); // Update list of users/groups updateListOfUserGroups(); } } private void updateListOfUserGroups() { // Update list of users/groups // TODO Refactoring: create a new {@link ShareUserListAdapter} instance with every call should not be needed mUserGroupsAdapter = new ShareUserListAdapter(getActivity().getApplicationContext(), R.layout.share_user_item, mShares, this); // Show data ListView usersList = (ListView) getView().findViewById(R.id.searchUsersListView); if (mShares.size() > 0) { usersList.setVisibility(View.VISIBLE); usersList.setAdapter(mUserGroupsAdapter); } else { usersList.setVisibility(View.GONE); } } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mListener = (OnSearchFragmentInteractionListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnFragmentInteractionListener"); } } @Override public void onStart() { super.onStart(); // focus the search view and request the software keyboard be shown View searchView = getView().findViewById(R.id.searchView); if (searchView.requestFocus()) { InputMethodManager imm = (InputMethodManager) getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); if (imm != null) { imm.showSoftInput(searchView.findFocus(), InputMethodManager.SHOW_IMPLICIT); } } } @Override public void onDetach() { super.onDetach(); mListener = null; } @Override public void unshareButtonPressed(OCShare share) { // Unshare mListener.unshareWith(share); Log_OC.d(TAG, "Unshare - " + share.getSharedWithDisplayName()); } /** * This interface must be implemented by activities that contain this * fragment to allow an interaction in this fragment to be communicated * to the activity and potentially other fragments contained in that * activity. * <p/> * See the Android Training lesson <a href= * "http://developer.android.com/training/basics/fragments/communicating.html" * >Communicating with Other Fragments</a> for more information. */ public interface OnSearchFragmentInteractionListener { void unshareWith(OCShare share); } }