73 lines
1.9 KiB
Java
73 lines
1.9 KiB
Java
package eu.siacs.conversations.utils;
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import android.os.FileObserver;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Stack;
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/**
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* Copyright (C) 2012 Bartek Przybylski
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* Copyright (C) 2015 ownCloud Inc.
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* Copyright (C) 2016 Daniel Gultsch
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*/
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public abstract class ConversationsFileObserver {
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private final String path;
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private final List<SingleFileObserver> mObservers = new ArrayList<>();
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public ConversationsFileObserver(String path) {
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this.path = path;
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}
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public synchronized void startWatching() {
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Stack<String> stack = new Stack<>();
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stack.push(path);
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while (!stack.empty()) {
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String parent = stack.pop();
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mObservers.add(new SingleFileObserver(parent, FileObserver.DELETE));
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final File path = new File(parent);
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final File[] files = path.listFiles();
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if (files == null) {
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continue;
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}
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for(File file : files) {
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if (file.isDirectory() && !file.getName().equals(".") && !file.getName().equals("..")) {
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stack.push(file.getPath());
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}
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}
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}
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for(FileObserver observer : mObservers) {
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observer.startWatching();
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}
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}
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public synchronized void stopWatching() {
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for(FileObserver observer : mObservers) {
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observer.stopWatching();
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}
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mObservers.clear();
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}
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abstract public void onEvent(int event, String path);
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private class SingleFileObserver extends FileObserver {
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private final String path;
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public SingleFileObserver(String path, int mask) {
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super(path, mask);
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this.path = path;
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}
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@Override
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public void onEvent(int event, String filename) {
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ConversationsFileObserver.this.onEvent(event, path+'/'+filename);
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}
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}
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}
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