Implement snippet functionality for search results

Change-Id: Idaeddb90ae39963e9b92912289f1ecbccd3669e2
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Karsten Heimrich <karsten.heimrich@qt.io>

10 files changed, 155 insertions, 178 deletions

diff --git a/src/assistant/help/help.pro b/src/assistant/help/help.pro
index 5b0421ed0..cd8aa64b7 100644
--- a/src/assistant/help/help.pro
+++ b/src/assistant/help/help.pro
@@ -41,7 +41,6 @@ HEADERS += qhelpenginecore.h \
     qhelpsearchengine.h \
     qhelpsearchquerywidget.h \
     qhelpsearchresultwidget.h \
-    qhelpsearchindex_default_p.h \
     qhelpsearchindexwriter_default_p.h \
     qhelpsearchindexreader_default_p.h \
     qhelpsearchindexreader_p.h
diff --git a/src/assistant/help/qhelpsearchengine.cpp b/src/assistant/help/qhelpsearchengine.cpp
index 5579c0cc3..d9c65b71e 100644
--- a/src/assistant/help/qhelpsearchengine.cpp
+++ b/src/assistant/help/qhelpsearchengine.cpp
@@ -58,6 +58,60 @@ QT_BEGIN_NAMESPACE
 
 using namespace fulltextsearch::qt;
 
+class QHelpSearchResultData : public QSharedData
+{
+public:
+    QUrl m_url;
+    QString m_title;
+    QString m_snippet;
+};
+
+QHelpSearchResult::QHelpSearchResult()
+    : d(new QHelpSearchResultData)
+{
+}
+
+
+QHelpSearchResult::QHelpSearchResult(const QHelpSearchResult &other)
+    : d(other.d)
+{
+}
+
+QHelpSearchResult::QHelpSearchResult(const QUrl &url, const QString &title, const QString &snippet)
+    : d(new QHelpSearchResultData)
+{
+    d->m_url = url;
+    d->m_title = title;
+    d->m_snippet = snippet;
+}
+
+QHelpSearchResult::~QHelpSearchResult()
+{
+}
+
+QHelpSearchResult &QHelpSearchResult::operator=(const QHelpSearchResult &other)
+{
+    d = other.d;
+    return *this;
+}
+
+QString QHelpSearchResult::title() const
+{
+    return d->m_title;
+}
+
+QUrl QHelpSearchResult::url() const
+{
+    return d->m_url;
+}
+
+QString QHelpSearchResult::snippet() const
+{
+    return d->m_snippet;
+}
+
+
+
 class QHelpSearchEnginePrivate : public QObject
 {
     Q_OBJECT
@@ -67,7 +121,7 @@ signals:
     void indexingFinished();
 
     void searchingStarted();
-    void searchingFinished(int hits);
+    void searchingFinished(int searchResults);
 
 private:
     QHelpSearchEnginePrivate(QHelpEngineCore *helpEngine)
@@ -94,11 +148,11 @@ private:
         return count;
     }
 
-    QList<QHelpSearchEngine::SearchHit> hits(int start, int end) const
+    QVector<QHelpSearchResult> searchResults(int start, int end) const
     {
         return indexReader ?
-                indexReader->hits(start, end) :
-                QList<QHelpSearchEngine::SearchHit>();
+                indexReader->searchResults(start, end) :
+                QVector<QHelpSearchResult>();
     }
 
     void updateIndex(bool reindex = false)
@@ -360,6 +414,7 @@ int QHelpSearchEngine::hitCount() const
     return d->hitCount();
 }
 
+// TODO: obsolete the SearchHit typedef and hits methods
 /*!
     \typedef QHelpSearchEngine::SearchHit
 
@@ -374,7 +429,16 @@ int QHelpSearchEngine::hitCount() const
 */
 QList<QHelpSearchEngine::SearchHit> QHelpSearchEngine::hits(int start, int end) const
 {
-   return d->hits(start, end);
+    QList<QHelpSearchEngine::SearchHit> hits;
+    for (const QHelpSearchResult &result : searchResults(start, end))
+        hits.append(qMakePair(result.url().toString(), result.title()));
+    return hits;
+}
+
+// TODO: add a doc for searchResults() and for QHelpSearchResult class
+QVector<QHelpSearchResult> QHelpSearchEngine::searchResults(int start, int end) const
+{
+    return d->searchResults(start, end);
 }
 
 /*!
diff --git a/src/assistant/help/qhelpsearchengine.h b/src/assistant/help/qhelpsearchengine.h
index db4876f8d..15314a65c 100644
--- a/src/assistant/help/qhelpsearchengine.h
+++ b/src/assistant/help/qhelpsearchengine.h
@@ -45,6 +45,7 @@
 #include <QtCore/QMap>
 #include <QtCore/QUrl>
 #include <QtCore/QObject>
+#include <QtCore/QSharedDataPointer>
 #include <QtCore/QString>
 #include <QtCore/QStringList>
 
@@ -53,8 +54,9 @@ QT_BEGIN_NAMESPACE
 
 class QHelpEngineCore;
 class QHelpSearchQueryWidget;
-class QHelpSearchResultWidget;
 class QHelpSearchEnginePrivate;
+class QHelpSearchResultData;
+class QHelpSearchResultWidget;
 
 class QHELP_EXPORT QHelpSearchQuery
 {
@@ -70,6 +72,26 @@ public:
     QStringList wordList;
 };
 
+// TODO: Add doc for it
+
+class QHELP_EXPORT QHelpSearchResult
+{
+public:
+    QHelpSearchResult();
+    QHelpSearchResult(const QHelpSearchResult &other);
+    QHelpSearchResult(const QUrl &url, const QString &title, const QString &snippet);
+    ~QHelpSearchResult();
+
+    QHelpSearchResult &operator=(const QHelpSearchResult &other);
+
+    QString title() const;
+    QUrl url() const;
+    QString snippet() const;
+
+private:
+    QSharedDataPointer<QHelpSearchResultData> d;
+};
+
 class QHELP_EXPORT QHelpSearchEngine : public QObject
 {
     Q_OBJECT
@@ -89,6 +111,8 @@ public:
     typedef QPair<QString, QString> SearchHit;
     QList<SearchHit> hits(int start, int end) const;
 
+    QVector<QHelpSearchResult> searchResults(int start, int end) const;
+
     QList<QHelpSearchQuery> query() const;
 
 public Q_SLOTS:
diff --git a/src/assistant/help/qhelpsearchindex_default_p.h b/src/assistant/help/qhelpsearchindex_default_p.h
deleted file mode 100644
index 9f57612cd..000000000
--- a/src/assistant/help/qhelpsearchindex_default_p.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the Qt Assistant of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QHELPSEARCHINDEXDEFAULT_H
-#define QHELPSEARCHINDEXDEFAULT_H
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API. It exists for the convenience
-// of the help generator tools. This header file may change from version
-// to version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include <QtCore/QString>
-#include <QtCore/QVector>
-#include <QtCore/QDataStream>
-
-QT_BEGIN_NAMESPACE
-
-namespace QtHelpInternal {
-
-struct DocumentInfo {
-
-    DocumentInfo() = default;
-    DocumentInfo(const QString &title, const QString &url)
-        : m_title(title), m_url(url) {}
-
-    QString m_title;
-    QString m_url;
-};
-
-} // namespace QtHelpInternal
-
-using QtHelpInternal::DocumentInfo;
-
-QT_END_NAMESPACE
-
-#endif  // QHELPSEARCHINDEXDEFAULT_H
diff --git a/src/assistant/help/qhelpsearchindexreader.cpp b/src/assistant/help/qhelpsearchindexreader.cpp
index 8037f0120..1aa7714f1 100644
--- a/src/assistant/help/qhelpsearchindexreader.cpp
+++ b/src/assistant/help/qhelpsearchindexreader.cpp
@@ -60,7 +60,7 @@ void QHelpSearchIndexReader::search(const QString &collectionFile, const QString
 {
     wait();
 
-    m_hitList.clear();
+    m_searchResults.clear();
     m_cancel = false;
     m_query = queryList;
     m_collectionFile = collectionFile;
@@ -72,14 +72,14 @@ void QHelpSearchIndexReader::search(const QString &collectionFile, const QString
 int QHelpSearchIndexReader::hitCount() const
 {
     QMutexLocker lock(&m_mutex);
-    return m_hitList.count();
+    return m_searchResults.count();
 }
 
-QList<QHelpSearchEngine::SearchHit> QHelpSearchIndexReader::hits(int start,
+QVector<QHelpSearchResult> QHelpSearchIndexReader::searchResults(int start,
                                                                  int end) const
 {
     QMutexLocker lock(&m_mutex);
-    return m_hitList.mid(start, end - start);
+    return m_searchResults.mid(start, end - start);
 }
 
 
diff --git a/src/assistant/help/qhelpsearchindexreader_default.cpp b/src/assistant/help/qhelpsearchindexreader_default.cpp
index 18e20a382..b57f3c344 100644
--- a/src/assistant/help/qhelpsearchindexreader_default.cpp
+++ b/src/assistant/help/qhelpsearchindexreader_default.cpp
@@ -107,13 +107,14 @@ static void bindNamespacesAndAttributes(QSqlQuery *query, const QMultiMap<QStrin
     }
 }
 
-QVector<DocumentInfo> Reader::queryTable(const QSqlDatabase &db,
+QVector<QHelpSearchResult> Reader::queryTable(const QSqlDatabase &db,
                                          const QString &tableName,
                                          const QString &term) const
 {
     const QString nsPlaceholders = namespacePlaceholders(m_namespaces);
     QSqlQuery query(db);
-    query.prepare(QLatin1String("SELECT url, title FROM ") + tableName +
+    query.prepare(QLatin1String("SELECT url, title, snippet(") + tableName +
+                  QLatin1String(", -1, '<b>', '</b>', '...', '10') FROM ") + tableName +
                   QLatin1String(" WHERE (") + nsPlaceholders +
                   QLatin1String(") AND ") + tableName +
                   QLatin1String(" MATCH ? ORDER BY rank"));
@@ -121,15 +122,16 @@ QVector<DocumentInfo> Reader::queryTable(const QSqlDatabase &db,
     query.addBindValue(term);
     query.exec();
 
-    QVector<DocumentInfo> documentsInfo;
+    QVector<QHelpSearchResult> results;
 
     while (query.next()) {
         const QString url = query.value(QLatin1String("url")).toString();
         const QString title = query.value(QLatin1String("title")).toString();
-        documentsInfo.append(DocumentInfo(title, url));
+        const QString snippet = query.value(2).toString();
+        results.append(QHelpSearchResult(url, title, snippet));
     }
 
-    return documentsInfo;
+    return results;
 }
 
 void Reader::searchInDB(const QString &term)
@@ -140,28 +142,29 @@ void Reader::searchInDB(const QString &term)
         db.setConnectOptions(QLatin1String("QSQLITE_OPEN_READONLY"));
         db.setDatabaseName(m_indexPath + QLatin1String("/fts"));
         if (db.open()) {
-            const QVector<DocumentInfo> titlesInfo = queryTable(db,
-                                        QLatin1String("titles"), term);
-            const QVector<DocumentInfo> contentsInfo = queryTable(db,
-                                        QLatin1String("contents"), term);
+            const QVector<QHelpSearchResult> titleResults = queryTable(db,
+                                             QLatin1String("titles"), term);
+            const QVector<QHelpSearchResult> contentResults = queryTable(db,
+                                             QLatin1String("contents"), term);
 
             // merge results form title and contents searches
-            m_hits = QVector<DocumentInfo>();
+            m_searchResults = QVector<QHelpSearchResult>();
 
-            QSet<QString> urls;
-            for (const DocumentInfo &info : titlesInfo) {
-                const QString url = info.m_url;
+            QSet<QUrl> urls;
+
+            for (const QHelpSearchResult &result : titleResults) {
+                const QUrl &url = result.url();
                 if (!urls.contains(url)) {
-                    m_hits.append(info);
                     urls.insert(url);
+                    m_searchResults.append(result);
                 }
             }
 
-            for (const DocumentInfo &info : contentsInfo) {
-                const QString url = info.m_url;
+            for (const QHelpSearchResult &result : contentResults) {
+                const QUrl &url = result.url();
                 if (!urls.contains(url)) {
-                    m_hits.append(info);
                     urls.insert(url);
+                    m_searchResults.append(result);
                 }
             }
         }
@@ -169,9 +172,9 @@ void Reader::searchInDB(const QString &term)
     QSqlDatabase::removeDatabase(uniqueId);
 }
 
-QVector<DocumentInfo> Reader::hits() const
+QVector<QHelpSearchResult> Reader::searchResults() const
 {
-    return m_hits;
+    return m_searchResults;
 }
 
 static bool attributesMatchFilter(const QStringList &attributes,
@@ -244,13 +247,14 @@ void QHelpSearchIndexReaderDefault::run()
     }
     lock.unlock();
 
-    m_hitList.clear();
+    m_searchResults.clear();
     m_reader.searchInDB(queryTerm);    // TODO: should this be interruptible as well ???
 
-    for (const DocumentInfo &docInfo : m_reader.hits())
-        m_hitList.append(qMakePair(docInfo.m_url, docInfo.m_title));
+    lock.relock();
+    m_searchResults = m_reader.searchResults();
+    lock.unlock();
 
-    emit searchingFinished(m_hitList.count());
+    emit searchingFinished(m_searchResults.count());
 }
 
 }   // namespace std
diff --git a/src/assistant/help/qhelpsearchindexreader_default_p.h b/src/assistant/help/qhelpsearchindexreader_default_p.h
index 0cea34ca2..0e9dcaed5 100644
--- a/src/assistant/help/qhelpsearchindexreader_default_p.h
+++ b/src/assistant/help/qhelpsearchindexreader_default_p.h
@@ -51,7 +51,6 @@
 // We mean it.
 //
 
-#include "qhelpsearchindex_default_p.h"
 #include "qhelpsearchindexreader_p.h"
 
 QT_FORWARD_DECLARE_CLASS(QSqlDatabase)
@@ -68,16 +67,16 @@ public:
     void addNamespace(const QString &namespaceName, const QStringList &attributes);
 
     void searchInDB(const QString &term);
-    QVector<DocumentInfo> hits() const;
+    QVector<QHelpSearchResult> searchResults() const;
 
 private:
-    QVector<DocumentInfo> queryTable(const QSqlDatabase &db,
-                                     const QString &tableName,
-                                     const QString &term) const;
+    QVector<QHelpSearchResult> queryTable(const QSqlDatabase &db,
+                                          const QString &tableName,
+                                          const QString &term) const;
 
     QString m_indexPath;
     QMultiMap<QString, QStringList> m_namespaces;
-    QVector<DocumentInfo> m_hits;
+    QVector<QHelpSearchResult> m_searchResults;
 };
 
 
diff --git a/src/assistant/help/qhelpsearchindexreader_p.h b/src/assistant/help/qhelpsearchindexreader_p.h
index b75b8dd2b..0a5ef11a5 100644
--- a/src/assistant/help/qhelpsearchindexreader_p.h
+++ b/src/assistant/help/qhelpsearchindexreader_p.h
@@ -55,10 +55,8 @@
 
 #include <QtCore/QList>
 #include <QtCore/QMutex>
-#include <QtCore/QObject>
-#include <QtCore/QString>
 #include <QtCore/QThread>
-#include <QtCore/QWaitCondition>
+#include <QtCore/QVector>
 
 QT_BEGIN_NAMESPACE
 
@@ -79,15 +77,15 @@ public:
         const QString &indexFilesFolder,
         const QList<QHelpSearchQuery> &queryList);
     int hitCount() const;
-    QList<QHelpSearchEngine::SearchHit> hits(int start, int end) const;
+    QVector<QHelpSearchResult> searchResults(int start, int end) const;
 
 signals:
     void searchingStarted();
-    void searchingFinished(int hits);
+    void searchingFinished(int searchResults);
 
 protected:
     mutable QMutex m_mutex;
-    QList<QHelpSearchEngine::SearchHit> m_hitList;
+    QVector<QHelpSearchResult> m_searchResults;
     bool m_cancel = false;
     QString m_collectionFile;
     QList<QHelpSearchQuery> m_query;
diff --git a/src/assistant/help/qhelpsearchresultwidget.cpp b/src/assistant/help/qhelpsearchresultwidget.cpp
index 4c5f1b365..40ae94e72 100644
--- a/src/assistant/help/qhelpsearchresultwidget.cpp
+++ b/src/assistant/help/qhelpsearchresultwidget.cpp
@@ -56,45 +56,12 @@
 
 QT_BEGIN_NAMESPACE
 
-class QDefaultResultWidget : public QTreeWidget
+class QResultWidget : public QTextBrowser
 {
     Q_OBJECT
 
 public:
-    QDefaultResultWidget(QWidget *parent = 0)
-        : QTreeWidget(parent)
-    {
-        header()->hide();
-        connect(this, SIGNAL(itemActivated(QTreeWidgetItem*,int)),
-            this, SLOT(itemActivated(QTreeWidgetItem*,int)));
-    }
-
-    void showResultPage(const QList<QHelpSearchEngine::SearchHit> hits)
-    {
-        for (const QHelpSearchEngine::SearchHit &hit : hits)
-            new QTreeWidgetItem(this, QStringList(hit.first) << hit.second);
-    }
-
-signals:
-    void requestShowLink(const QUrl &url);
-
-private slots:
-    void itemActivated(QTreeWidgetItem *item, int /* column */)
-    {
-        if (item) {
-            QString data = item->data(1, Qt::DisplayRole).toString();
-            emit requestShowLink(data);
-        }
-    }
-};
-
-
-class QCLuceneResultWidget : public QTextBrowser
-{
-    Q_OBJECT
-
-public:
-    QCLuceneResultWidget(QWidget *parent = 0)
+    QResultWidget(QWidget *parent = 0)
         : QTextBrowser(parent)
     {
         connect(this, SIGNAL(anchorClicked(QUrl)),
@@ -102,25 +69,28 @@ public:
         setContextMenuPolicy(Qt::NoContextMenu);
     }
 
-    void showResultPage(const QList<QHelpSearchEngine::SearchHit> hits, bool isIndexing)
+    void showResultPage(const QVector<QHelpSearchResult> results, bool isIndexing)
     {
-        QString htmlFile = QString(QLatin1String("<html><head><title>%1</title></head><body>"))
-            .arg(tr("Search Results"));
+        QString htmlFile = QString(QLatin1String("<html><head><title>%1"
+            "</title></head><body>")).arg(tr("Search Results"));
 
-        int count = hits.count();
+        int count = results.count();
         if (count != 0) {
             if (isIndexing)
-                htmlFile += QString(QLatin1String("<div style=\"text-align:left; font-weight:bold; color:red\">"
+                htmlFile += QString(QLatin1String("<div style=\"text-align:left;"
+                    " font-weight:bold; color:red\">"
                     "%1&nbsp;<span style=\"font-weight:normal; color:black\">"
                     "%2</span></div></div><br>")).arg(tr("Note:"))
                     .arg(tr("The search results may not be complete since the "
                             "documentation is still being indexed."));
 
-            for (const QHelpSearchEngine::SearchHit &hit : hits) {
-                htmlFile += QString(QLatin1String("<div style=\"text-align:left; font-weight:bold\""
-                "><a href=\"%1\">%2</a><div style=\"color:green; font-weight:normal;"
-                " margin:5px\">%1</div></div><p></p>"))
-                .arg(hit.first).arg(hit.second);
+            for (const QHelpSearchResult &result : results) {
+                htmlFile += QString(QLatin1String("<div style=\"text-align:left;"
+                    " font-weight:bold\"><a href=\"%1\">%2</a>"
+                    "<div style=\"color:green; font-weight:normal;"
+                    " margin:5px\">%3</div></div><p></p>"))
+                        .arg(result.url().toString(), result.title(),
+                             result.snippet());
             }
         } else {
             htmlFile += QLatin1String("<div align=\"center\"><br><br><h2>")
@@ -166,7 +136,7 @@ private slots:
             resultLastToShow += 20;
             resultFirstToShow += 20;
 
-            resultTextBrowser->showResultPage(searchEngine->hits(resultFirstToShow,
+            resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
                 resultLastToShow), isIndexing);
             if (resultLastToShow >= searchEngine->hitCount())
                 updateNextButtonState(false);
@@ -183,7 +153,7 @@ private slots:
             if (resultFirstToShow == resultLastToShow)
                 resultFirstToShow -= 20;
 
-            resultTextBrowser->showResultPage(searchEngine->hits(resultFirstToShow,
+            resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
                 resultLastToShow), isIndexing);
             updateNextButtonState(false);
         }
@@ -196,7 +166,7 @@ private slots:
             resultLastToShow = 20;
             resultFirstToShow = 0;
 
-            resultTextBrowser->showResultPage(searchEngine->hits(resultFirstToShow,
+            resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
                 resultLastToShow), isIndexing);
             updatePrevButtonState(false);
         }
@@ -213,7 +183,7 @@ private slots:
             resultLastToShow -= count;
             resultFirstToShow = resultLastToShow -20;
 
-            resultTextBrowser->showResultPage(searchEngine->hits(resultFirstToShow,
+            resultTextBrowser->showResultPage(searchEngine->searchResults(resultFirstToShow,
                 resultLastToShow), isIndexing);
             if (resultFirstToShow == 0)
                 updatePrevButtonState(false);
@@ -249,7 +219,6 @@ private:
         , searchEngine(engine)
         , isIndexing(false)
     {
-        resultTreeWidget = 0;
         resultTextBrowser = 0;
 
         resultLastToShow = 20;
@@ -305,8 +274,7 @@ private:
 
     QPointer<QHelpSearchEngine> searchEngine;
 
-    QDefaultResultWidget *resultTreeWidget;
-    QCLuceneResultWidget *resultTextBrowser;
+    QResultWidget *resultTextBrowser;
 
     int resultLastToShow;
     int resultFirstToShow;
@@ -374,7 +342,7 @@ QHelpSearchResultWidget::QHelpSearchResultWidget(QHelpSearchEngine *engine)
 
     vLayout->addLayout(hBoxLayout);
 
-    d->resultTextBrowser = new QCLuceneResultWidget(this);
+    d->resultTextBrowser = new QResultWidget(this);
     vLayout->addWidget(d->resultTextBrowser);
 
     connect(d->resultTextBrowser, SIGNAL(requestShowLink(QUrl)), this,
diff --git a/src/assistant/help/qhelpsearchresultwidget.h b/src/assistant/help/qhelpsearchresultwidget.h
index 502fe56ad..95fe3b016 100644
--- a/src/assistant/help/qhelpsearchresultwidget.h
+++ b/src/assistant/help/qhelpsearchresultwidget.h
@@ -51,7 +51,6 @@
 
 QT_BEGIN_NAMESPACE
 
-
 class QHelpSearchResultWidgetPrivate;
 
 class QHELP_EXPORT QHelpSearchResultWidget : public QWidget