Java tutorial
/** * ownCloud Android client application * * @author Bartek Przybylski * @author masensio * @author David A. Velasco * Copyright (C) 2011 Bartek Przybylski * Copyright (C) 2015 ownCloud Inc. * <p/> * 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. * <p/> * 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. * <p/> * 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.synox.android.ui.fragment; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.os.AsyncTask; import android.os.Bundle; import android.os.Handler; import android.os.Parcelable; import android.support.v4.view.MenuItemCompat; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.app.ActionBar; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.SearchView; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView.AdapterContextMenuInfo; import com.github.clans.fab.FloatingActionMenu; import com.synox.android.R; import com.synox.android.datamodel.FileDataStorageManager; import com.synox.android.datamodel.OCFile; import com.synox.android.datamodel.StorePosition; import com.synox.android.lib.common.utils.Log_OC; import com.synox.android.ui.activity.FileDisplayActivity; import com.synox.android.ui.activity.FolderPickerActivity; import com.synox.android.ui.activity.OnEnforceableRefreshListener; import com.synox.android.ui.adapter.FileListListAdapter; import com.synox.android.ui.dialog.ConfirmationDialogFragment; import com.synox.android.ui.dialog.CreateFolderDialogFragment; import com.synox.android.ui.dialog.FileActionsDialogFragment; import com.synox.android.ui.dialog.RemoveFileDialogFragment; import com.synox.android.ui.dialog.RenameFileDialogFragment; import com.synox.android.ui.dialog.UploadSourceDialogFragment; import com.synox.android.utils.FileStorageUtils; import java.io.File; import java.util.Vector; /** * A Fragment that lists all files and folders in a given path. * <p/> * TODO refactor to get rid of direct dependency on FileDisplayActivity */ public class OCFileListFragment extends ExtendedListFragment implements FileActionsDialogFragment.FileActionsDialogFragmentListener, SearchView.OnQueryTextListener { private static final String TAG = OCFileListFragment.class.getSimpleName(); private static final String MY_PACKAGE = OCFileListFragment.class.getPackage() != null ? OCFileListFragment.class.getPackage().getName() : "com.owncloud.android.ui.fragment"; public final static String ARG_JUST_FOLDERS = MY_PACKAGE + ".JUST_FOLDERS"; public final static String ARG_ALLOW_CONTEXTUAL_ACTIONS = MY_PACKAGE + ".ALLOW_CONTEXTUAL"; private static final String KEY_FILE = MY_PACKAGE + ".extra.FILE"; private FileFragment.ContainerActivity mContainerActivity; private FileListListAdapter mAdapter; private boolean mJustFolders; private OCFile mFile = null; private OCFile mTargetFile; private MenuItem searchItem; private MenuItem layoutView; private SearchView searchView; public AsyncTask<OCFile, Void, Vector<OCFile>> asyncLoader; private static final String DIALOG_UPLOAD_SOURCE = "DIALOG_UPLOAD_SOURCE"; private static final String DIALOG_CREATE_FOLDER = "DIALOG_CREATE_FOLDER"; public FileListListAdapter getAdapter() { return mAdapter; } @Override public void onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); searchItem = menu.findItem(R.id.action_search); layoutView = menu.findItem(R.id.action_changeView); // create search bar and search listener if (searchItem != null) { searchView = (SearchView) MenuItemCompat.getActionView(searchItem); searchView.setOnQueryTextListener(this); } } /** * {@inheritDoc} */ @Override public void onAttach(Context context) { super.onAttach(context); Log_OC.e(TAG, "onAttach"); getActivity().invalidateOptionsMenu(); try { mContainerActivity = (FileFragment.ContainerActivity) context; // Todo REMOVE //Navigation.setContainerActivity(mContainerActivity); } catch (ClassCastException e) { throw new ClassCastException( context.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName()); } try { setOnRefreshListener((OnEnforceableRefreshListener) context); } catch (ClassCastException e) { throw new ClassCastException(context.toString() + " must implement " + SwipeRefreshLayout.OnRefreshListener.class.getSimpleName()); } } @Override public void onDetach() { setOnRefreshListener(null); mContainerActivity = null; mAdapter = null; super.onDetach(); } /** * {@inheritDoc} */ @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setHasOptionsMenu(true); Bundle args = getArguments(); mJustFolders = (args != null) && args.getBoolean(ARG_JUST_FOLDERS, false); final Handler h = new Handler(); // New file fab on click listener newFileFab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { fabMenu.close(true); h.postDelayed(new Runnable() { @Override public void run() { UploadSourceDialogFragment dialog = UploadSourceDialogFragment .newInstance(((FileDisplayActivity) getActivity()).getAccount()); dialog.show(getActivity().getSupportFragmentManager(), DIALOG_UPLOAD_SOURCE); } }, 250); } }); // New folder on click listener newFolderFab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { fabMenu.close(true); h.postDelayed(new Runnable() { @Override public void run() { CreateFolderDialogFragment dialog = CreateFolderDialogFragment .newInstance(getCurrentFile()); dialog.show(getActivity().getSupportFragmentManager(), DIALOG_CREATE_FOLDER); } }, 250); } }); mAdapter = new FileListListAdapter(getContext(), this, mContainerActivity); setListAdapter(mAdapter); mAdapter.notifyDataSetChanged(); if (mJustFolders) { fabMenu.hideMenu(false); fabMenu = null; } } public FloatingActionMenu getFab() { return fabMenu; } public ActionBar getSupportAB() throws NullPointerException { if (getActivity() instanceof FileDisplayActivity) { return ((FileDisplayActivity) getActivity()).getSupportActionBar(); } else { return null; } } /** * {@inheritDoc} */ @Override public boolean onFileActionChosen(int menuId, int filePosition) { mTargetFile = (OCFile) mAdapter.getItem(filePosition); switch (menuId) { case R.id.action_share_file: { mContainerActivity.getFileOperationsHelper().showShareFile(mTargetFile); return true; } case R.id.action_open_file_with: { mContainerActivity.getFileOperationsHelper().openFile(mTargetFile); return true; } case R.id.action_rename_file: { RenameFileDialogFragment dialog = RenameFileDialogFragment.newInstance(mTargetFile); dialog.show(getFragmentManager(), FileDetailFragment.FTAG_RENAME_FILE); return true; } case R.id.action_remove_file: { RemoveFileDialogFragment dialog = RemoveFileDialogFragment.newInstance(mTargetFile); dialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION); return true; } case R.id.action_download_file: case R.id.action_sync_file: { mContainerActivity.getFileOperationsHelper().syncFile(mTargetFile); return true; } case R.id.action_cancel_sync: { ((FileDisplayActivity) mContainerActivity).cancelTransference(mTargetFile); return true; } /*case R.id.action_see_details: { mContainerActivity.showDetails(mTargetFile); return true; }*/ case R.id.action_send_file: { // Obtain the file if (!mTargetFile.isDown()) { // Download the file Log_OC.d(TAG, mTargetFile.getRemotePath() + " : File must be downloaded"); ((FileDisplayActivity) mContainerActivity).startDownloadForSending(mTargetFile); } else { mContainerActivity.getFileOperationsHelper().sendDownloadedFile(mTargetFile); } return true; } case R.id.action_move: { Intent action = new Intent(getActivity(), FolderPickerActivity.class); // Pass mTargetFile that contains info of selected file/folder action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile); getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_MOVE_FILES); return true; } case R.id.action_favorite_file: { mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, true); getAdapter().notifyItemChanged(filePosition); return true; } case R.id.action_unfavorite_file: { mContainerActivity.getFileOperationsHelper().toggleFavorite(mTargetFile, false); getAdapter().notifyItemChanged(filePosition); return true; } case R.id.action_see_details: { mContainerActivity.showDetails(mTargetFile); return true; } case R.id.action_copy: Intent action = new Intent(getActivity(), FolderPickerActivity.class); // Pass mTargetFile that contains info of selected file/folder action.putExtra(FolderPickerActivity.EXTRA_FILE, mTargetFile); getActivity().startActivityForResult(action, FileDisplayActivity.ACTION_COPY_FILES); return true; default: return false; } } /** * {@inhericDoc} */ @Override public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); boolean matched = onFileActionChosen(item.getItemId(), ((AdapterContextMenuInfo) item.getMenuInfo()).position); if (!matched) { return super.onContextItemSelected(item); } else { return matched; } } public void sortByName(boolean descending) { mAdapter.setSortOrder(FileStorageUtils.SORT_NAME, descending); } public void sortByDate(boolean descending) { mAdapter.setSortOrder(FileStorageUtils.SORT_DATE, descending); } public void sortBySize(boolean descending) { mAdapter.setSortOrder(FileStorageUtils.SORT_SIZE, descending); } /** * Cahnging the layout view , list or grid * * @param viewMode */ public void layoutView(int viewMode) { int layoutMode = 0; // save list position Parcelable s = getListView().getLayoutManager().onSaveInstanceState(); StorePosition.setParentPosition(mFile.getFileId(), s); switch (viewMode) { case 0: mLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false); mAdapter.setResourceLayout(R.layout.list_item); layoutView.setIcon(R.drawable.ic_grid); layoutMode = R.drawable.ic_grid; break; case 1: if (getActivity().getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { mLayoutManager = new GridLayoutManager(getActivity(), NUMBER_OF_GRID_COLUMNS, GridLayoutManager.VERTICAL, false); } else { mLayoutManager = new GridLayoutManager(getActivity(), NUMBER_OF_GRID_COLUMNS_LANDSCAPE, GridLayoutManager.VERTICAL, false); } mAdapter.setResourceLayout(R.layout.grid_item); layoutView.setIcon(R.drawable.ic_list); layoutMode = R.drawable.ic_list; break; default: mLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false); mAdapter.setResourceLayout(R.layout.list_item); layoutView.setIcon(R.drawable.ic_grid); layoutMode = R.drawable.ic_grid; break; } // update current layout mode SharedPreferences.Editor editor = mAppPreferences.edit(); editor.putInt("layoutMode", layoutMode); editor.apply(); mCurrentListView.setLayoutManager(mLayoutManager); // restore list position if (StorePosition.getListPositionList().containsKey(mFile.getFileId())) { Parcelable r = StorePosition.getParentPosition(mFile.getFileId()); getListView().getLayoutManager().onRestoreInstanceState(r); StorePosition.removeParentPosition(mFile.getFileId()); } } public RecyclerView.LayoutManager getLayoutManager() { return mLayoutManager; } @Override public boolean onQueryTextSubmit(String s) { searchItem.collapseActionView(); return false; } @Override public boolean onQueryTextChange(String s) { mAdapter.getFilter().filter(s); return false; } /** * Use this to query the {@link OCFile} that is currently * being displayed by this fragment * * @return The currently viewed OCFile */ public OCFile getCurrentFile() { return mFile; } public void setCurrentFile(OCFile file) { mFile = file; } public int onBrowseUp() { OCFile parentDir; int moveCount = 0; if (mFile != null) { FileDataStorageManager storageManager = mContainerActivity.getStorageManager(); String parentPath = null; if (mFile.getParentId() != FileDataStorageManager.ROOT_PARENT_ID) { parentPath = new File(mFile.getRemotePath()).getParent(); parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR; parentDir = storageManager.getFileByPath(parentPath); moveCount++; } else { parentDir = storageManager.getFileByPath(OCFile.ROOT_PATH); } while (parentDir == null) { if (parentPath != null) { parentPath = new File(parentPath).getParent(); parentPath = parentPath.endsWith(OCFile.PATH_SEPARATOR) ? parentPath : parentPath + OCFile.PATH_SEPARATOR; parentDir = storageManager.getFileByPath(parentPath); moveCount++; } } mFile = parentDir; listDirectory(mFile, false, "onBrowseUp"); // restore list position if (StorePosition.getListPositionList().containsKey(mFile.getFileId())) { Parcelable r = StorePosition.getParentPosition(mFile.getFileId()); getListView().getLayoutManager().onRestoreInstanceState(r); } } return moveCount; } /** * Calls listDirectory with a null parameter */ public void listDirectory() { listDirectory(null, false, "null"); } public void refreshDirectory(String event) { listDirectory(mFile, false, event); } /** * Lists the given directory on the view. When the input parameter is null, * it will either refresh the last known directory. list the root * if there never was a directory. * * @param directory File to be listed */ public void listDirectory(final OCFile directory, final boolean scroll, final String from) { asyncLoader = new AsyncTask<OCFile, Void, Vector<OCFile>>() { private FileDataStorageManager storageManager; private Vector<OCFile> mFetchedFiles; @Override protected void onPreExecute() { super.onPreExecute(); if ((from.equals("onBrowseUp") || from.equals("folderChange"))) { try { mAdapter.clearAdapterData(from); } catch (NullPointerException npe) { // nullpointer exception ignore } } // collapse search view if opened if (searchItem != null) { searchItem.collapseActionView(); } } @Override protected Vector<OCFile> doInBackground(OCFile... params) { if (isCancelled()) return null; OCFile tmpDirectory = params[0]; storageManager = mContainerActivity.getStorageManager(); if (storageManager != null) { // Check input parameters for null if (tmpDirectory == null) { if (mFile != null) { tmpDirectory = mFile; } else { tmpDirectory = storageManager.getFileByPath("/"); if (tmpDirectory == null) return null; // no files, wait for sync } } // If that's not a directory -> List its parent if (!tmpDirectory.isFolder()) { tmpDirectory = storageManager.getFileById(tmpDirectory.getParentId()); } mFile = tmpDirectory; } if (storageManager != null && mAdapter != null) { mFetchedFiles = storageManager.getFolderContent(mFile); if (mFetchedFiles.size() > 0) { if (mJustFolders) { mFetchedFiles = mAdapter.getFolders(mFetchedFiles); } } // sort files mFetchedFiles = FileStorageUtils.sortFolder(mFetchedFiles); } return mFetchedFiles; } @Override protected void onPostExecute(Vector<OCFile> nFileList) { if (!isCancelled()) { // show fab button if (getFab() != null) { getFab().showMenu(true); } // scroll to 0 when we go deeper into the folders if (mFile != null && mFile.getParentId() > 0 && !StorePosition.getListPositionList().containsKey(mFile.getFileId()) && scroll) { getListView().scrollToPosition(0); } try { mAdapter.fillAdapter(nFileList); getSupportAB().setSubtitle(mAdapter.generateFileCount()); } catch (NullPointerException npe) { // nullpointer exception ignore } } } }; asyncLoader.execute(directory); } }