Fix crash when fetching lyrics with the network remote.

(cherry picked from commit 90c8929f96805bc25020bd03ec9f19dd6fb1f13b)

src/CMakeLists.txt

@@ -308,6 +308,7 @@ set(SOURCES
   songinfo/songkickconcerts.cpp
   songinfo/songkickconcertwidget.cpp
   songinfo/songplaystats.cpp
+  songinfo/ultimatelyricslyric.cpp
   songinfo/ultimatelyricsprovider.cpp
   songinfo/ultimatelyricsreader.cpp
 
@@ -592,6 +593,7 @@ set(HEADERS
   songinfo/songkickconcerts.h
   songinfo/songkickconcertwidget.h
   songinfo/songplaystats.h
+  songinfo/ultimatelyricslyric.h
   songinfo/ultimatelyricsprovider.h
   songinfo/ultimatelyricsreader.h
 

src/networkremote/outgoingdatacreator.cpp

@@ -535,7 +535,7 @@ void OutgoingDataCreator::SendLyrics(int id, const SongInfoFetcher::Result& resu
 
   foreach (const CollapsibleInfoPane::Data& data, result.info_) {
     // If the size is zero, do not send the provider
-    SongInfoTextView* editor = qobject_cast<SongInfoTextView*>(data.contents_);
+    UltimateLyricsLyric* editor = qobject_cast<UltimateLyricsLyric*>(data.content_object_);
     if (editor->toPlainText().length() == 0)
       continue;
 

src/networkremote/outgoingdatacreator.h

@@ -18,8 +18,8 @@
 #include "songinfo/collapsibleinfopane.h"
 #include "songinfo/songinfofetcher.h"
 #include "songinfo/songinfoprovider.h"
-#include "songinfo/songinfotextview.h"
 #include "songinfo/songinfoview.h"
+#include "songinfo/ultimatelyricslyric.h"
 #include "songinfo/ultimatelyricsprovider.h"
 #include "songinfo/ultimatelyricsreader.h"
 #include "remotecontrolmessages.pb.h"

src/songinfo/collapsibleinfopane.h

@@ -49,6 +49,7 @@ public:
     int relevance_;
 
     QWidget* contents_;
+    QObject* content_object_;
   };
 
   CollapsibleInfoPane(const Data& data, QWidget* parent = 0);

src/songinfo/ultimatelyricslyric.cpp

@@ -0,0 +1,37 @@
+/* This file is part of Clementine.
+   Copyright 2010, David Sansome <me@davidsansome.com>
+
+   Clementine 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.
+
+   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ultimatelyricslyric.h"
+
+#include <QRegExp>
+
+UltimateLyricsLyric::UltimateLyricsLyric(QObject* parent) :
+  QTextDocument(parent) {
+}
+
+void UltimateLyricsLyric::SetHtml(const QString& html) {
+  QString copy(html.trimmed());
+
+  // Simplify newlines, and convert them to <p>
+  copy.replace(QRegExp("[\\r\\n]+"), "\n");
+  copy.replace(QRegExp("([^>])[\\t ]*\\n"), "\\1<p>");
+
+  // Strip any newlines from the end
+  copy.replace(QRegExp("((<\\s*br\\s*/?\\s*>)|(<\\s*/?\\s*p\\s*/?\\s*>))+$"), "");
+
+  setHtml(copy);
+}

src/songinfo/ultimatelyricslyric.h

@@ -0,0 +1,33 @@
+/* This file is part of Clementine.
+   Copyright 2010, David Sansome <me@davidsansome.com>
+
+   Clementine 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.
+
+   Clementine 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 Clementine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef ULTIMATELYRICSLYRIC_H
+#define ULTIMATELYRICSLYRIC_H
+
+#include <QString>
+#include <QTextDocument>
+
+class UltimateLyricsLyric : public QTextDocument {
+  Q_OBJECT
+
+public:
+  UltimateLyricsLyric(QObject* parent = 0);
+
+  void SetHtml(const QString& html);
+};
+
+#endif // ULTIMATELYRICSLYRIC_H

src/songinfo/ultimatelyricsprovider.cpp

@@ -16,12 +16,15 @@
 */
 
 #include "songinfotextview.h"
+#include "ultimatelyricslyric.h"
 #include "ultimatelyricsprovider.h"
 #include "core/logging.h"
 #include "core/network.h"
 
+#include <QCoreApplication>
 #include <QNetworkReply>
 #include <QTextCodec>
+#include <QThread>
 
 #include <boost/scoped_ptr.hpp>
 
@@ -137,9 +140,15 @@ void UltimateLyricsProvider::LyricsFetched() {
     data.type_ = CollapsibleInfoPane::Data::Type_Lyrics;
     data.relevance_ = relevance();
 
-    SongInfoTextView* editor = new SongInfoTextView;
-    editor->SetHtml(lyrics);
-    data.contents_ = editor;
+    if (QThread::currentThread() == QCoreApplication::instance()->thread()) {
+      SongInfoTextView* editor = new SongInfoTextView;
+      editor->SetHtml(lyrics);
+      data.contents_ = editor;
+    } else {
+      UltimateLyricsLyric* editor = new UltimateLyricsLyric;
+      editor->SetHtml(lyrics);
+      data.content_object_ = editor;
+    }
 
     emit InfoReady(id, data);
   }