refactor(search): De-couple baloo URL parsing logic from UI

Summary:
Extracts the logic that parses `baloosearch:` urls into a new model class. The parser logic itself is kept as is.
The search box UI is later updated using the model fields.

This refactor has been proposed by @bruns in the review of D24422, as it largely simplifies the unit tests and further expansion/improvements.

Test Plan:
No behavior changes.
Test case is added in the follow-up revision: D25258

Reviewers: #dolphin, elvisangelaccio, bruns

Reviewed By: #dolphin, elvisangelaccio, bruns

Subscribers: ngraham, bruns, kfm-devel

Tags: #dolphin

Differential Revision: https://phabricator.kde.org/D25257

1 files changed, 98 insertions, 0 deletions

diff --git a/src/search/dolphinquery.cpp b/src/search/dolphinquery.cpp
new file mode 100644
index 000000000..09a841859
--- /dev/null
+++ b/src/search/dolphinquery.cpp
@@ -0,0 +1,98 @@
+/***************************************************************************
+ *   Copyright (C) 2019 by Ismael Asensio <[email protected]>             *
+ *                                                                         *
+ *   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 2 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, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "dolphinquery.h"
+
+#include <config-baloo.h>
+#ifdef HAVE_BALOO
+#include <Baloo/Query>
+#endif
+
+namespace {
+    /** Checks if a given term in the Baloo::Query::searchString() is a special search term.
+     * This is a copy of `DolphinFacetsWidget::isRatingTerm()` method.
+     */
+    bool isSearchTerm(const QString& term)
+    {
+        static const QLatin1String searchTokens[] {
+            QLatin1String("modified>="),
+            QLatin1String("rating>=")
+        };
+
+        for (const auto &searchToken : searchTokens) {
+            if (term.startsWith(searchToken)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
+
+DolphinQuery DolphinQuery::fromBalooSearchUrl(const QUrl& searchUrl)
+{
+    DolphinQuery model;
+    model.m_searchUrl = searchUrl;
+
+#ifdef HAVE_BALOO
+    const Baloo::Query query = Baloo::Query::fromSearchUrl(searchUrl);
+
+    model.m_includeFolder = query.includeFolder();
+
+    model.m_searchText = query.searchString();
+
+    const QStringList types = query.types();
+    model.m_fileType = types.isEmpty() ? QString() : types.first();
+
+    const QStringList subTerms = query.searchString().split(' ', QString::SkipEmptyParts);
+    foreach (const QString& subTerm, subTerms) {
+        if (subTerm.startsWith(QLatin1String("filename:"))) {
+            const QString value = subTerm.mid(9);
+            model.m_searchText = value;
+        } else if (isSearchTerm(subTerm)) {
+            model.m_searchTerms << subTerm;
+        }
+    }
+#endif
+    return model;
+}
+
+QUrl DolphinQuery::searchUrl() const
+{
+    return m_searchUrl;
+}
+
+QString DolphinQuery::text() const
+{
+    return m_searchText;
+}
+
+QString DolphinQuery::type() const
+{
+    return m_fileType;
+}
+
+QStringList DolphinQuery::searchTerms() const
+{
+    return m_searchTerms;
+}
+
+QString DolphinQuery::includeFolder() const
+{
+    return m_includeFolder;
+}