BookCollectionShadow.java

/*
 * Copyright (C) 2007-2013 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.android.fbreader.libraryService;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.geometerplus.android.fbreader.api.TextPosition;
import org.geometerplus.fbreader.Paths;
import org.geometerplus.fbreader.book.AbstractBookCollection;
import org.geometerplus.fbreader.book.Author;
import org.geometerplus.fbreader.book.Book;
import org.geometerplus.fbreader.book.BookEvent;
import org.geometerplus.fbreader.book.BookQuery;
import org.geometerplus.fbreader.book.Bookmark;
import org.geometerplus.fbreader.book.BookmarkQuery;
import org.geometerplus.fbreader.book.Filter;
import org.geometerplus.fbreader.book.HighlightingStyle;
import org.geometerplus.fbreader.book.SerializerUtil;
import org.geometerplus.fbreader.book.Tag;
import org.geometerplus.fbreader.book.UID;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
import org.geometerplus.zlibrary.text.view.ZLTextFixedPosition;
import org.geometerplus.zlibrary.text.view.ZLTextPosition;

import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;

public class BookCollectionShadow extends AbstractBookCollection implements ServiceConnection {
	private Context myContext;
	private volatile LibraryInterface myInterface;
	private Runnable myOnBindAction;

	private final BroadcastReceiver myReceiver = new BroadcastReceiver() {
		public void onReceive(Context context, Intent intent) {
			if (!hasListeners()) {
				return;
			}

			try {
				final String type = intent.getStringExtra("type");
				if (LibraryService.BOOK_EVENT_ACTION.equals(intent.getAction())) {
					final Book book = SerializerUtil.deserializeBook(intent.getStringExtra("book"));
					fireBookEvent(BookEvent.valueOf(type), book);
				} else {
					fireBuildEvent(Status.valueOf(type));
				}
			} catch (Exception e) {
				// ignore
			}
		}
	};

	private static Runnable combined(final Runnable action0, final Runnable action1) {
		if (action0 == null) {
			return action1;
		}
		if (action1 == null) {
			return action0;
		}
		return new Runnable() {
			public void run() {
				action0.run();
				action1.run();
			}
		};
	}

	public synchronized void bindToService(Context context, Runnable onBindAction) {
		if (myInterface != null && myContext == context) {
			if (onBindAction != null) {
				onBindAction.run();
			}
		} else {
			myOnBindAction = combined(myOnBindAction, onBindAction);
			context.bindService(
				new Intent(context, LibraryService.class),
				this,
				LibraryService.BIND_AUTO_CREATE
			);
			myContext = context;
		}
	}

	public synchronized void unbind() {
		if (myContext != null && myInterface != null) {
			try {
				myContext.unregisterReceiver(myReceiver);
			} catch (Exception e) {
				e.printStackTrace();
			}
			try {
				myContext.unbindService(this);
			} catch (Exception e) {
				e.printStackTrace();
			}
			myInterface = null;
			myContext = null;
		}
	}

	public synchronized void reset(boolean force) {
		if (myInterface != null) {
			try {
				myInterface.reset(
					Collections.singletonList(Paths.BooksDirectoryOption().getValue()), force
				);
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized int size() {
		if (myInterface == null) {
			return 0;
		}
		try {
			return myInterface.size();
		} catch (RemoteException e) {
			return 0;
		}
	}

	public synchronized Status status() {
		if (myInterface == null) {
			return Status.NotStarted;
		}
		try {
			return Status.valueOf(myInterface.status());
		} catch (Throwable t) {
			return Status.NotStarted;
		}
	}

	public synchronized List<Book> books(BookQuery query) {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return SerializerUtil.deserializeBookList(myInterface.books(SerializerUtil.serialize(query)));
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized boolean hasBooks(Filter filter) {
		if (myInterface == null) {
			return false;
		}
		try {
			return myInterface.hasBooks(SerializerUtil.serialize(new BookQuery(filter, 1)));
		} catch (RemoteException e) {
			return false;
		}
	}

	public synchronized List<Book> recentBooks() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return SerializerUtil.deserializeBookList(myInterface.recentBooks());
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized Book getRecentBook(int index) {
		if (myInterface == null) {
			return null;
		}
		try {
			return SerializerUtil.deserializeBook(myInterface.getRecentBook(index));
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized Book getBookByFile(ZLFile file) {
		if (myInterface == null) {
			return null;
		}
		try {
			return SerializerUtil.deserializeBook(myInterface.getBookByFile(file.getPath()));
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized Book getBookById(long id) {
		if (myInterface == null) {
			return null;
		}
		try {
			return SerializerUtil.deserializeBook(myInterface.getBookById(id));
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized Book getBookByUid(UID uid) {
		if (myInterface == null) {
			return null;
		}
		try {
			return SerializerUtil.deserializeBook(myInterface.getBookByUid(uid.Type, uid.Id));
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized List<Author> authors() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			final List<String> strings = myInterface.authors();
			final List<Author> authors = new ArrayList<Author>(strings.size());
			for (String s : strings) {
				authors.add(Util.stringToAuthor(s));
			}
			return authors;
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized List<Tag> tags() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			final List<String> strings = myInterface.tags();
			final List<Tag> tags = new ArrayList<Tag>(strings.size());
			for (String s : strings) {
				tags.add(Util.stringToTag(s));
			}
			return tags;
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized boolean hasSeries() {
		if (myInterface != null) {
			try {
				return myInterface.hasSeries();
			} catch (RemoteException e) {
			}
		}
		return false;
	}

	public synchronized List<String> series() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return myInterface.series();
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized List<String> titles(BookQuery query) {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return myInterface.titles(SerializerUtil.serialize(query));
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized List<String> firstTitleLetters() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return myInterface.firstTitleLetters();
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized boolean saveBook(Book book, boolean force) {
		if (myInterface == null) {
			return false;
		}
		try {
			return myInterface.saveBook(SerializerUtil.serialize(book), force);
		} catch (RemoteException e) {
			return false;
		}
	}

	public synchronized void removeBook(Book book, boolean deleteFromDisk) {
		if (myInterface != null) {
			try {
				myInterface.removeBook(SerializerUtil.serialize(book), deleteFromDisk);
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized void addBookToRecentList(Book book) {
		if (myInterface != null) {
			try {
				myInterface.addBookToRecentList(SerializerUtil.serialize(book));
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized List<String> labels() {
		if (myInterface != null) {
			try {
				return myInterface.labels();
			} catch (RemoteException e) {
			}
		}
		return Collections.emptyList();
	}

	public synchronized ZLTextPosition getStoredPosition(long bookId) {
		if (myInterface == null) {
			return null;
		}

		try {
			final TextPosition position = myInterface.getStoredPosition(bookId);
			if (position == null) {
				return null;
			}

			return new ZLTextFixedPosition(
				position.ParagraphIndex, position.ElementIndex, position.CharIndex
			);
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized void storePosition(long bookId, ZLTextPosition position) {
		if (position != null && myInterface != null) {
			try {
				myInterface.storePosition(bookId, new TextPosition(
					position.getParagraphIndex(), position.getElementIndex(), position.getCharIndex()
				));
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized boolean isHyperlinkVisited(Book book, String linkId) {
		if (myInterface == null) {
			return false;
		}

		try {
			return myInterface.isHyperlinkVisited(SerializerUtil.serialize(book), linkId);
		} catch (RemoteException e) {
			return false;
		}
	}

	public synchronized void markHyperlinkAsVisited(Book book, String linkId) {
		if (myInterface != null) {
			try {
				myInterface.markHyperlinkAsVisited(SerializerUtil.serialize(book), linkId);
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized List<Bookmark> bookmarks(BookmarkQuery query) {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return SerializerUtil.deserializeBookmarkList(
				myInterface.bookmarks(SerializerUtil.serialize(query))
			);
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized void saveBookmark(Bookmark bookmark) {
		if (myInterface != null) {
			try {
				bookmark.update(SerializerUtil.deserializeBookmark(
					myInterface.saveBookmark(SerializerUtil.serialize(bookmark))
				));
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized void deleteBookmark(Bookmark bookmark) {
		if (myInterface != null) {
			try {
				myInterface.deleteBookmark(SerializerUtil.serialize(bookmark));
			} catch (RemoteException e) {
			}
		}
	}

	public synchronized HighlightingStyle getHighlightingStyle(int styleId) {
		if (myInterface == null) {
			return null;
		}
		try {
			return SerializerUtil.deserializeStyle(myInterface.getHighlightingStyle(styleId));
		} catch (RemoteException e) {
			return null;
		}
	}

	public synchronized List<HighlightingStyle> highlightingStyles() {
		if (myInterface == null) {
			return Collections.emptyList();
		}
		try {
			return SerializerUtil.deserializeStyleList(myInterface.highlightingStyles());
		} catch (RemoteException e) {
			return Collections.emptyList();
		}
	}

	public synchronized void saveHighlightingStyle(HighlightingStyle style) {
		if (myInterface != null) {
			try {
				myInterface.saveHighlightingStyle(SerializerUtil.serialize(style));
			} catch (RemoteException e) {
				// ignore
			}
		}
	}

	// method from ServiceConnection interface
	public synchronized void onServiceConnected(ComponentName name, IBinder service) {
		myInterface = LibraryInterface.Stub.asInterface(service);
		if (myOnBindAction != null) {
			myOnBindAction.run();
			myOnBindAction = null;
		}
		if (myContext != null) {
			myContext.registerReceiver(myReceiver, new IntentFilter(LibraryService.BOOK_EVENT_ACTION));
			myContext.registerReceiver(myReceiver, new IntentFilter(LibraryService.BUILD_EVENT_ACTION));
		}
	}

	// method from ServiceConnection interface
	public synchronized void onServiceDisconnected(ComponentName name) {
	}
}