GUI: add menu to export simple search history to text file

src/qtgui/rclmain.ui

@@ -79,7 +79,9 @@
     <addaction name="actionSave_last_query"/>
     <addaction name="actionLoad_saved_query"/>
     <addaction name="separator"/>
+    <addaction name="fileExportSSearchHistoryAction"/>
     <addaction name="fileEraseSearchHistoryAction"/>
+    <addaction name="separator"/>
     <addaction name="fileEraseDocHistoryAction"/>
     <addaction name="separator"/>
     <addaction name="fileExitAction"/>
@@ -205,6 +207,14 @@
     <cstring>fileEraseSearchHistoryAction</cstring>
    </property>
   </action>
+  <action name="fileExportSSearchHistoryAction">
+   <property name="text">
+    <string>E&amp;xport simple search history</string>
+   </property>
+   <property name="name" stdset="0">
+    <cstring>fileExportSSearchHistoryAction</cstring>
+   </property>
+  </action>
   <action name="showMissingHelpers_Action">
    <property name="text">
     <string>Missing &amp;helpers</string>

src/qtgui/rclmain_w.cpp

@@ -315,6 +315,8 @@ void RclMain::init()
             this, SLOT(eraseDocHistory()));
     connect(fileEraseSearchHistoryAction, SIGNAL(triggered()), 
             this, SLOT(eraseSearchHistory()));
+    connect(fileExportSSearchHistoryAction, SIGNAL(triggered()), 
+            this, SLOT(exportSimpleSearchHistory()));
     connect(actionSave_last_query, SIGNAL(triggered()),
             this, SLOT(saveLastQuery()));
     connect(actionLoad_saved_query, SIGNAL(triggered()),
@@ -1005,7 +1007,8 @@ void RclMain::showDocHistory()
     }
     // Construct a bogus SearchData structure
     std::shared_ptr<Rcl::SearchData>searchdata = 
-	std::shared_ptr<Rcl::SearchData>(new Rcl::SearchData(Rcl::SCLT_AND, cstr_null));
+        std::shared_ptr<Rcl::SearchData>(new Rcl::SearchData(Rcl::SCLT_AND,
+                                                             cstr_null));
     searchdata->setDescription((const char *)tr("History data").toUtf8());
 
 
@@ -1014,7 +1017,8 @@ void RclMain::showDocHistory()
         new DocSequenceHistory(rcldb, g_dynconf, 
                                string(tr("Document history").toUtf8()));
     src->setDescription((const char *)tr("History data").toUtf8());
-    DocSource *source = new DocSource(theconfig, std::shared_ptr<DocSequence>(src));
+    DocSource *source = new DocSource(theconfig,
+                                      std::shared_ptr<DocSequence>(src));
     m_source = std::shared_ptr<DocSequence>(source);
     m_source->setSortSpec(m_sortspec);
     m_source->setFiltSpec(m_filtspec);
@@ -1037,12 +1041,44 @@ void RclMain::eraseDocHistory()
 
 void RclMain::eraseSearchHistory()
 {
+    int rep = QMessageBox::warning(
+        0, tr("Confirm"), 
+        tr("Erasing simple and advanced search history lists, "
+           "please click Ok to confirm"),
+        QMessageBox::Ok, QMessageBox::Cancel, QMessageBox::NoButton);
+    if (rep == QMessageBox::Ok) {
         prefs.ssearchHistory.clear();
         if (sSearch)
             sSearch->clearAll();
         if (g_advshistory)
             g_advshistory->clear();
     }
+}
+
+void RclMain::exportSimpleSearchHistory()
+{
+    QFileDialog dialog(0, "Saving simple search history");
+    dialog.setFileMode(QFileDialog::AnyFile);
+    dialog.setAcceptMode(QFileDialog::AcceptSave);
+    dialog.setViewMode(QFileDialog::List);
+    QFlags<QDir::Filter> flags = QDir::NoDotAndDotDot|QDir::Files;
+    dialog.setFilter(flags);
+    if (dialog.exec() != QDialog::Accepted) {
+        return;
+    }
+    string path = qs2utf8s(dialog.selectedFiles().value(0));
+    LOGDEB("Chosen path: " << path << "\n");
+    FILE *fp = fopen(path.c_str(), "wb");
+    if (fp == 0) {
+        QMessageBox::warning(0, "Recoll", 
+                             tr("Could not open/create file"));
+        return;
+    }
+    for (int i = 0; i < prefs.ssearchHistory.count(); i++) {
+        fprintf(fp, "%s\n", qs2utf8s(prefs.ssearchHistory[i]).c_str());
+    }
+    fclose(fp);
+}
 
 // Called when the uiprefs dialog is ok'd
 void RclMain::setUIPrefs()

src/qtgui/rclmain_w.h

@@ -139,6 +139,7 @@ public slots:
     virtual void resetSearch();
     virtual void eraseDocHistory();
     virtual void eraseSearchHistory();
+    virtual void exportSimpleSearchHistory();
     virtual void saveLastQuery();
     virtual void loadSavedQuery();
     virtual void setStemLang(QAction *id);