--- /dev/null
+/*
+ * Reactor - HtmlFilter.java - Copyright © 2013 David Roden
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.reactor.filters;
+
+import static com.google.common.base.Preconditions.checkState;
+import net.pterodactylus.reactor.Filter;
+import net.pterodactylus.reactor.State;
+import net.pterodactylus.reactor.states.FailedState;
+import net.pterodactylus.reactor.states.HtmlState;
+import net.pterodactylus.reactor.states.HttpState;
+
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+
+/**
+ * {@link Filter} that converts a {@link HttpState} into an {@link HtmlState}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class HtmlFilter implements Filter {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public State filter(State state) {
+ if (!state.success()) {
+ return FailedState.from(state);
+ }
+ checkState(state instanceof HttpState, "state is not a HttpState but a %s", state.getClass().getName());
+ Document document = Jsoup.parse(((HttpState) state).content(), ((HttpState) state).uri());
+ return new HtmlState(((HttpState) state).uri(), document);
+ }
+
+}