Smarter address bar completer now shows better search results

- thanks to Franz Fellner

closes #506

CHANGELOG

@@ -11,9 +11,11 @@ Version 1.3.5
     * Save x as ... actions will always show file dialog
     * possibility to choose to use external download manager on every download
     * remember last section in preferences
+    * smarter address bar completer will show better search results
     * new User Agent manager lets you set User Agent per site
     * new restore session page lets you choose which tabs you want to restore
     * new scheme handler for file protocol allows browsing through directories
+    * new option to show loading progress in address bar
     * fixed visibility of navigation bar in fullscreen
     * fixed bad position of add tab button when there is a lot of tabs
     * fixed gui with RTL languages

src/lib/navigation/completer/locationcompletermodel.cpp

@@ -46,15 +46,10 @@ void LocationCompleterModel::refreshCompletions(const QString &string)
     Type showType = (Type) qzSettings->showLocationSuggestions;
 
     int limit = string.size() < 3 ? 25 : 15;
-    QString searchString = QString("%%1%").arg(string);
     QList<QUrl> urlList;
-    QSqlQuery query;
 
     if (showType == HistoryAndBookmarks || showType == Bookmarks) {
-        query.prepare("SELECT id, url, title, icon FROM bookmarks WHERE title LIKE ? OR url LIKE ? LIMIT ?");
-        query.addBindValue(searchString);
-        query.addBindValue(searchString);
-        query.addBindValue(limit);
+        QSqlQuery query = createQuery(string, QString(), limit, true, false);
         query.exec();
 
         while (query.next()) {
@@ -66,6 +61,7 @@ void LocationCompleterModel::refreshCompletions(const QString &string)
             item->setData(query.value(0), IdRole);
             item->setData(query.value(2), TitleRole);
             item->setData(QVariant(true), BookmarkRole);
+            item->setData(string, SearchStringRole);
             appendRow(item);
             urlList.append(url);
         }
@@ -74,10 +70,7 @@ void LocationCompleterModel::refreshCompletions(const QString &string)
     }
 
     if (showType == HistoryAndBookmarks || showType == History) {
-        query.prepare("SELECT id, url, title FROM history WHERE title LIKE ? OR url LIKE ? ORDER BY count DESC LIMIT ?");
-        query.addBindValue(searchString);
-        query.addBindValue(searchString);
-        query.addBindValue(limit);
+        QSqlQuery query = createQuery(string, "count DESC", limit, false, false);
         query.exec();
 
         while (query.next()) {
@@ -93,6 +86,7 @@ void LocationCompleterModel::refreshCompletions(const QString &string)
             item->setData(query.value(0), IdRole);
             item->setData(query.value(2), TitleRole);
             item->setData(QVariant(false), BookmarkRole);
+            item->setData(string, SearchStringRole);
 
             appendRow(item);
         }
@@ -119,3 +113,54 @@ void LocationCompleterModel::showMostVisited()
         appendRow(item);
     }
 }
+
+QSqlQuery LocationCompleterModel::createQuery(QString searchString, QString orderBy, int limit, bool bookmarks, bool exactMatch)
+{
+    QString query = "SELECT id, url, title";
+    QStringList searchList;
+
+    if (bookmarks) {
+        query.append(", icon FROM bookmarks ");
+    }
+    else {
+        query.append(" FROM history ");
+    }
+
+    query.append("WHERE ");
+    if (exactMatch) {
+        query.append("title LIKE ? OR url LIKE ? ");
+    }
+    else {
+        searchList = searchString.split(' ', QString::SkipEmptyParts);
+        const int slSize = searchList.size();
+        for (int i = 0; i < slSize; ++i) {
+            query.append("(title LIKE ? OR url LIKE ?) ");
+            if (i < slSize - 1) {
+                query.append("AND ");
+            }
+        }
+    }
+
+    if (!orderBy.isEmpty()) {
+        query.append("ORDER BY " + orderBy);
+    }
+
+    query.append(" LIMIT ?");
+
+    QSqlQuery sqlQuery;
+    sqlQuery.prepare(query);
+
+    if (exactMatch) {
+        sqlQuery.addBindValue(QString("%%1%").arg(searchString));
+        sqlQuery.addBindValue(QString("%%1%").arg(searchString));
+    }
+    else {
+        foreach(const QString & str, searchList) {
+            sqlQuery.addBindValue(QString("%%1%").arg(str));
+            sqlQuery.addBindValue(QString("%%1%").arg(str));
+        }
+    }
+    sqlQuery.addBindValue(limit);
+
+    return sqlQuery;
+}

src/lib/navigation/completer/locationcompletermodel.h

@@ -20,13 +20,16 @@
 
 #include <QStandardItemModel>
 
+class QSqlQuery;
+
 class LocationCompleterModel : public QStandardItemModel
 {
 public:
     enum Role {
         TitleRole = Qt::UserRole + 1,
         BookmarkRole = Qt::UserRole + 2,
-        IdRole = Qt::UserRole + 3
+        IdRole = Qt::UserRole + 3,
+        SearchStringRole = Qt::UserRole + 4
     };
     explicit LocationCompleterModel(QObject* parent = 0);
 
@@ -42,9 +45,11 @@ private:
         HistoryAndBookmarks = 0,
         History = 1,
         Bookmarks = 2,
-        Nothing = 3
+        Nothing = 4
     };
 
+    QSqlQuery createQuery(QString searchString, QString orderBy, int limit, bool bookmarks, bool exactMatch);
+
     QString m_lastCompletion;
 
 };