choose xic extraction method works

src/gui/edit/edit_settings/edit_settings.ui

@@ -29,9 +29,9 @@
      <item row="0" column="1">
       <layout class="QHBoxLayout" name="horizontalLayout">
        <item>
-        <widget class="QRadioButton" name="xic_reader_buffered_button">
+        <widget class="QRadioButton" name="xic_reader_pwiz_button">
          <property name="text">
-          <string>direct</string>
+          <string>di&amp;rect</string>
          </property>
          <attribute name="buttonGroup">
           <string notr="true">xic_reader_button_group</string>
@@ -39,7 +39,7 @@
         </widget>
        </item>
        <item>
-        <widget class="QRadioButton" name="radioButton">
+        <widget class="QRadioButton" name="xic_reader_buffered_button">
          <property name="text">
           <string>&amp;buffered</string>
          </property>

src/gui/edit/edit_settings/editsettings.cpp

@@ -30,6 +30,7 @@
 
 #include "editsettings.h"
 #include <QDebug>
+#include <QSettings>
 
 #include "ui_edit_settings.h"
 
@@ -37,6 +38,14 @@ EditSettings::EditSettings(QWidget *parent)
   : QDialog(parent), ui(new Ui::EditSettingsDialog)
 {
   ui->setupUi(this);
+  QSettings settings;
+  QString xic_extraction_method =
+    settings.value("global/xic_extractor", "pwiz").toString();
+  ui->xic_reader_buffered_button->setChecked(true);
+  if(xic_extraction_method == "pwiz")
+    {
+      ui->xic_reader_buffered_button->setChecked(false);
+    }
 }
 
 
@@ -54,6 +63,16 @@ EditSettings::done(int r)
 {
   if(QDialog::Accepted == r) // ok was pressed
     {
+      QString xic_extraction_method = "pwiz";
+      if(ui->xic_reader_buffered_button->isChecked())
+        {
+          xic_extraction_method = "buffered";
+        }
+
+      QSettings settings;
+      settings.setValue("global/xic_extractor", xic_extraction_method);
+      QDialog::done(r);
+      return;
     }
   else // cancel, close or exc was pressed
     {