mirror of
https://code.briarproject.org/briar/briar.git
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Reblogging and Comment UI
This commit is contained in:
Torsten Grote
akwizgran
@@ -0,0 +1,250 @@
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package org.briarproject.android.blogs;
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import android.app.Activity;
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import android.support.annotation.CallSuper;
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import android.support.annotation.Nullable;
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import org.briarproject.android.api.AndroidNotificationManager;
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import org.briarproject.android.controller.DbControllerImpl;
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import org.briarproject.android.controller.handler.ResultExceptionHandler;
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import org.briarproject.api.blogs.Blog;
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import org.briarproject.api.blogs.BlogCommentHeader;
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import org.briarproject.api.blogs.BlogManager;
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import org.briarproject.api.blogs.BlogPostHeader;
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import org.briarproject.api.db.DbException;
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import org.briarproject.api.event.BlogPostAddedEvent;
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import org.briarproject.api.event.Event;
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import org.briarproject.api.event.EventBus;
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import org.briarproject.api.event.EventListener;
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import org.briarproject.api.identity.IdentityManager;
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import org.briarproject.api.identity.LocalAuthor;
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import org.briarproject.api.sync.GroupId;
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import org.briarproject.api.sync.MessageId;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.logging.Logger;
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import javax.inject.Inject;
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import static java.util.logging.Level.INFO;
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import static java.util.logging.Level.WARNING;
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abstract class BaseControllerImpl extends DbControllerImpl
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implements BaseController, EventListener {
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private static final Logger LOG =
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Logger.getLogger(BaseControllerImpl.class.getName());
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@Inject
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protected Activity activity;
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@Inject
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protected EventBus eventBus;
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@Inject
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protected AndroidNotificationManager notificationManager;
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@Inject
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protected IdentityManager identityManager;
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@Inject
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protected volatile BlogManager blogManager;
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private final Map<MessageId, String> bodyCache = new ConcurrentHashMap<>();
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private final Map<MessageId, BlogPostHeader> headerCache =
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new ConcurrentHashMap<>();
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protected volatile OnBlogPostAddedListener listener;
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@Override
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@CallSuper
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public void onStart() {
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eventBus.addListener(this);
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}
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@Override
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@CallSuper
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public void onStop() {
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eventBus.removeListener(this);
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}
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@Override
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@CallSuper
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public void eventOccurred(Event e) {
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if (e instanceof BlogPostAddedEvent) {
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final BlogPostAddedEvent m = (BlogPostAddedEvent) e;
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LOG.info("New blog post added");
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activity.runOnUiThread(new Runnable() {
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@Override
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public void run() {
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listener.onBlogPostAdded(m.getHeader(), m.isLocal());
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}
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});
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}
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}
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@Override
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public void setOnBlogPostAddedListener(OnBlogPostAddedListener listener) {
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if (this.listener != null)
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throw new IllegalStateException("Listener was already set");
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this.listener = listener;
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}
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@Override
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public void loadBlogPosts(final GroupId groupId,
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final ResultExceptionHandler<Collection<BlogPostItem>, DbException> handler) {
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if (groupId == null) throw new IllegalStateException();
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runOnDbThread(new Runnable() {
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@Override
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public void run() {
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try {
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Collection<BlogPostItem> items = loadItems(groupId);
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handler.onResult(items);
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} catch (DbException e) {
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if (LOG.isLoggable(WARNING))
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LOG.log(WARNING, e.toString(), e);
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handler.onException(e);
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}
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}
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});
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}
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protected Collection<BlogPostItem> loadItems(GroupId groupId)
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throws DbException {
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long now = System.currentTimeMillis();
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Collection<BlogPostHeader> headers =
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blogManager.getPostHeaders(groupId);
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long duration = System.currentTimeMillis() - now;
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if (LOG.isLoggable(INFO))
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LOG.info("Loading headers took " + duration + " ms");
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Collection<BlogPostItem> items = new ArrayList<>(headers.size());
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now = System.currentTimeMillis();
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for (BlogPostHeader h : headers) {
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headerCache.put(h.getId(), h);
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BlogPostItem item = getItem(h);
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items.add(item);
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}
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duration = System.currentTimeMillis() - now;
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if (LOG.isLoggable(INFO))
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LOG.info("Loading bodies took " + duration + " ms");
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return items;
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}
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@Override
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public void loadBlogPost(final BlogPostHeader header,
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final ResultExceptionHandler<BlogPostItem, DbException> handler) {
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String body = bodyCache.get(header.getId());
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if (body != null) {
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LOG.info("Loaded body from cache");
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handler.onResult(new BlogPostItem(header, body));
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return;
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}
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runOnDbThread(new Runnable() {
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@Override
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public void run() {
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try {
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long now = System.currentTimeMillis();
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BlogPostItem item = getItem(header);
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long duration = System.currentTimeMillis() - now;
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if (LOG.isLoggable(INFO))
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LOG.info("Loading body took " + duration + " ms");
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handler.onResult(item);
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} catch (DbException e) {
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if (LOG.isLoggable(WARNING))
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LOG.log(WARNING, e.toString(), e);
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handler.onException(e);
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}
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}
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});
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}
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@Override
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public void loadBlogPost(final GroupId g, final MessageId m,
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final ResultExceptionHandler<BlogPostItem, DbException> handler) {
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BlogPostHeader header = headerCache.get(m);
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if (header != null) {
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LOG.info("Loaded header from cache");
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loadBlogPost(header, handler);
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return;
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}
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runOnDbThread(new Runnable() {
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@Override
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public void run() {
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try {
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long now = System.currentTimeMillis();
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BlogPostHeader header = getPostHeader(g, m);
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BlogPostItem item = getItem(header);
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long duration = System.currentTimeMillis() - now;
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if (LOG.isLoggable(INFO))
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LOG.info("Loading post took " + duration + " ms");
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handler.onResult(item);
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} catch (DbException e) {
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if (LOG.isLoggable(WARNING))
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LOG.log(WARNING, e.toString(), e);
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handler.onException(e);
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}
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}
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});
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}
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@Override
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public void repeatPost(final BlogPostItem item,
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final @Nullable String comment,
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final ResultExceptionHandler<Void, DbException> handler) {
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runOnDbThread(new Runnable() {
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@Override
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public void run() {
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try {
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LocalAuthor a = identityManager.getLocalAuthor();
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Blog b = blogManager.getPersonalBlog(a);
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BlogPostHeader h = item.getHeader();
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blogManager.addLocalComment(a, b.getId(), comment, h);
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handler.onResult(null);
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} catch (DbException e) {
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if (LOG.isLoggable(WARNING))
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LOG.log(WARNING, e.toString(), e);
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handler.onException(e);
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}
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}
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});
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}
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private BlogPostHeader getPostHeader(GroupId g, MessageId m)
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throws DbException {
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if (g == null) throw new IllegalStateException();
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BlogPostHeader header = headerCache.get(m);
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if (header == null) {
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header = blogManager.getPostHeader(g, m);
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headerCache.put(m, header);
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}
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return header;
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}
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private BlogPostItem getItem(BlogPostHeader h) throws DbException {
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String body;
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if (h instanceof BlogCommentHeader) {
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BlogCommentHeader c = (BlogCommentHeader) h;
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BlogCommentItem item = new BlogCommentItem(c);
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body = getPostBody(item.getPostHeader().getId());
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item.setBody(body);
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return item;
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} else {
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body = getPostBody(h.getId());
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return new BlogPostItem(h, body);
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}
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}
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private String getPostBody(MessageId m) throws DbException {
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String body = bodyCache.get(m);
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if (body == null) {
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body = blogManager.getPostBody(m);
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if (body != null) bodyCache.put(m, body);
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}
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//noinspection ConstantConditions
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return body;
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}
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}
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