SamplingDialog: add random and periodic method of sampling

Change-Id: I1ed75d1434751da017070fb6903f6288defa02b6

6 files changed, 400 insertions, 150 deletions

diff --git a/sc/AllLangResTarget_sc.mk b/sc/AllLangResTarget_sc.mk
index 536e95461f34..4de23aa4fa0f 100644
--- a/sc/AllLangResTarget_sc.mk
+++ b/sc/AllLangResTarget_sc.mk
@@ -84,6 +84,7 @@ $(eval $(call gb_SrsTarget_add_files,sc/res,\
     sc/source/ui/formdlg/dwfunctr.src \
     sc/source/ui/sidebar/CellAppearancePropertyPanel.src \
     sc/source/ui/StatisticsDialogs/RandomNumberGeneratorDialog.src \
+    sc/source/ui/StatisticsDialogs/SamplingDialog.src \
     sc/source/core/src/compiler.src \
 ))
 
diff --git a/sc/inc/globstr.hrc b/sc/inc/globstr.hrc
index 31694f1297d5..458e775a1a10 100644
--- a/sc/inc/globstr.hrc
+++ b/sc/inc/globstr.hrc
@@ -704,6 +704,8 @@
 #define STR_RNG_PARAMETER_STANDARD_NUMBER_OF_TRIALS 571
 #define STR_RNG_PARAMETER_STANDARD_NU_VALUE         572
 
+#define STR_SAMPLING_UNDO_NAME                      573
+
 #endif
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/source/ui/StatisticsDialogs/SamplingDialog.cxx b/sc/source/ui/StatisticsDialogs/SamplingDialog.cxx
index c9e8c3462e01..d78d901f8a13 100644
--- a/sc/source/ui/StatisticsDialogs/SamplingDialog.cxx
+++ b/sc/source/ui/StatisticsDialogs/SamplingDialog.cxx
@@ -55,6 +55,12 @@ ScSamplingDialog::ScSamplingDialog(
     get(mpOutputRangeButton, "output-range-button");
     mpOutputRangeButton->SetReferences(this, mpOutputRangeEdit);
 
+    get(mpSampleSize, "sample-size-spin");
+    get(mpPeriod,     "period-spin");
+
+    get(mpRandomMethodRadio,   "random-method-radio");
+    get(mpPeriodicMethodRadio, "periodic-method-radio");
+
     get(mpButtonOk,     "ok");
     get(mpButtonApply,  "apply");
     get(mpButtonCancel, "cancel");
@@ -68,6 +74,8 @@ void ScSamplingDialog::Init()
     mpButtonOk->SetClickHdl( LINK( this, ScSamplingDialog, OkClicked ) );
     mpButtonCancel->SetClickHdl( LINK( this, ScSamplingDialog, CancelClicked ) );
     mpButtonApply->SetClickHdl( LINK( this, ScSamplingDialog, ApplyClicked ) );
+    mpButtonOk->Enable(false);
+    mpButtonApply->Enable(false);
 
     Link aLink = LINK( this, ScSamplingDialog, GetFocusHandler );
     mpInputRangeEdit->SetGetFocusHdl( aLink );
@@ -80,20 +88,31 @@ void ScSamplingDialog::Init()
     mpInputRangeButton->SetLoseFocusHdl( aLink );
     mpOutputRangeEdit->SetLoseFocusHdl( aLink );
     mpOutputRangeButton->SetLoseFocusHdl( aLink );
+
+    mpSampleSize->SetModifyHdl( LINK( this, ScSamplingDialog, SamplingSizeValueModified ));
+
+    mpPeriodicMethodRadio->SetToggleHdl( LINK( this, ScSamplingDialog, ToggleSamplingMethod ) );
+    mpRandomMethodRadio->SetToggleHdl( LINK( this, ScSamplingDialog, ToggleSamplingMethod ) );
+
+    mpSampleSize->SetMin( 0 );
+    mpSampleSize->SetMax( SAL_MAX_INT64 );
+
+    mpOutputRangeEdit->GrabFocus();
+    mpPeriodicMethodRadio->Check(true);
+
+    ToggleSamplingMethod(NULL);
 }
 
 void ScSamplingDialog::GetRangeFromSelection()
 {
     OUString aCurrentString;
     mViewData->GetSimpleArea(mInputRange);
-    mInputRange.Format( aCurrentString, ABS_DREF3D, mDocument, mAddressDetails );
-    mpInputRangeEdit->SetText( aCurrentString );
+    mInputRange.Format(aCurrentString, ABS_DREF3D, mDocument, mAddressDetails);
+    mpInputRangeEdit->SetText(aCurrentString);
 }
 
-
 ScSamplingDialog::~ScSamplingDialog()
-{
-}
+{}
 
 void ScSamplingDialog::SetActive()
 {
@@ -133,77 +152,112 @@ void ScSamplingDialog::SetReference( const ScRange& rReferenceRange, ScDocument*
         else if ( mpActiveEdit == mpOutputRangeEdit )
         {
             mOutputAddress = rReferenceRange.aStart;
-            sal_uInt16  nFormat = ( mOutputAddress.Tab() == mCurrentAddress.Tab() ) ? SCA_ABS : SCA_ABS_3D;
+
+            sal_uInt16 nFormat = ( mOutputAddress.Tab() == mCurrentAddress.Tab() ) ? SCA_ABS : SCA_ABS_3D;
             mOutputAddress.Format( aReferenceString, nFormat, pDocument, pDocument->GetAddressConvention() );
-            mpActiveEdit->SetRefString( aReferenceString );
+            mpOutputRangeEdit->SetRefString( aReferenceString );
+
+            // Change sampling size according to output range selection
+            sal_Int64 aSelectedSampleSize = rReferenceRange.aEnd.Row() - rReferenceRange.aStart.Row() + 1;
+            if (aSelectedSampleSize > 1)
+                mpSampleSize->SetValue(aSelectedSampleSize);
+            SamplingSizeValueModified(NULL);
+
+            // Enable OK, Cancel if output range is set
+            mpButtonOk->Enable(!mpOutputRangeEdit->GetText().isEmpty());
+            mpButtonApply->Enable(!mpOutputRangeEdit->GetText().isEmpty());
+
         }
     }
 }
 
 void ScSamplingDialog::PerformSampling()
 {
-    OUString aUndo("A");
+    OUString aUndo(ScResId(STR_SAMPLING_UNDO_NAME));
     ScDocShell* pDocShell = mViewData->GetDocShell();
     svl::IUndoManager* pUndoManager = pDocShell->GetUndoManager();
     pUndoManager->EnterListAction( aUndo, aUndo );
 
-    SCCOL nColStart = mInputRange.aStart.Col();
-    SCCOL nColEnd   = mInputRange.aEnd.Col();
-    SCROW nRowStart = mInputRange.aStart.Row();
-    SCROW nRowEnd   = mInputRange.aEnd.Row();
-    SCTAB nTabStart = mInputRange.aStart.Tab();
-    SCTAB nTabEnd   = mInputRange.aEnd.Tab();
-
-    TimeValue now;
-    osl_getSystemTime(&now);
-    boost::mt19937 seed(now.Nanosec);
-    boost::uniform_01<boost::mt19937> rng(seed);
-
-    SCTAB nOutTab = mOutputAddress.Tab();
-    SCCOL nOutCol = mOutputAddress.Col();
-    SCROW nOutRow = mOutputAddress.Row();
-    for (SCROW nTab = nTabStart; nTab <= nTabEnd; nTab++)
+    ScAddress aStart = mInputRange.aStart;
+    ScAddress aEnd   = mInputRange.aEnd;
+
+    SCTAB outTab = mOutputAddress.Tab();
+    SCCOL outCol = mOutputAddress.Col();
+    SCROW outRow = mOutputAddress.Row();
+
+    if (mpRandomMethodRadio->IsChecked())
     {
-        nOutCol = mOutputAddress.Col();
-        for (SCCOL nCol = nColStart; nCol <= nColEnd; nCol++)
-        {
-            nOutRow = mOutputAddress.Row();
-            SCROW nRow = nRowStart;
+        TimeValue now;
+        osl_getSystemTime(&now);
+        boost::mt19937 seed(now.Nanosec);
+        boost::uniform_01<boost::mt19937> rng(seed);
+
+        SCROW inRow;
 
-            SCROW t = 0;
-            SCROW N = (nRowEnd - nRowStart) + 1;
-            int m = 0;
-            int n = 3;
-            double u;
+        sal_Int64 aSampleSize = mpSampleSize->GetValue();
 
-            while (m < n)
+        for (SCROW inTab = aStart.Tab(); inTab <= aEnd.Tab(); inTab++)
+        {
+            outCol = mOutputAddress.Col();
+            for (SCCOL inCol = aStart.Col(); inCol <= aEnd.Col(); inCol++)
             {
-                u = rng();
-                if ( (N - t)*u >= n - m )
+                SCROW aPopulationSize = (aEnd.Row() - aStart.Row()) + 1;
+
+                outRow = mOutputAddress.Row();
+                inRow  = aStart.Row();
+
+                double aRandomValue;
+
+                while ((outRow - mOutputAddress.Row()) < aSampleSize)
                 {
-                    nRow++;
-                    t++;
+                    aRandomValue = rng();
+
+                    if ( (aPopulationSize - (inRow - aStart.Row())) * aRandomValue >= aSampleSize - (outRow - mOutputAddress.Row()) )
+                    {
+                        inRow++;
+                    }
+                    else
+                    {
+                        double aValue = mDocument->GetValue( ScAddress(inCol, inRow, inTab) );
+                        pDocShell->GetDocFunc().SetValueCell(ScAddress(outCol, outRow, outTab), aValue, true);
+                        inRow++;
+                        outRow++;
+                    }
                 }
-                else
+                outCol++;
+            }
+            outTab++;
+        }
+    }
+    else if (mpPeriodicMethodRadio->IsChecked())
+    {
+        sal_Int64 aPeriod = mpPeriod->GetValue();
+
+        for (SCROW inTab = aStart.Tab(); inTab <= aEnd.Tab(); inTab++)
+        {
+            outCol = mOutputAddress.Col();
+            for (SCCOL inCol = aStart.Col(); inCol <= aEnd.Col(); inCol++)
+            {
+                sal_Int64 i = 0;
+                outRow = mOutputAddress.Row();
+                for (SCROW inRow = aStart.Row(); inRow <= aEnd.Row(); inRow++)
                 {
-                    double aValue = mDocument->GetValue( ScAddress(nCol, nRow, nTab) );
-                    pDocShell->GetDocFunc().SetValueCell(ScAddress(nOutCol, nOutRow, nOutTab), aValue, true);
-                    nRow++;
-                    nOutRow++;
-                    m++;
-                    t++;
+                    if (i % aPeriod == aPeriod - 1 ) // Sample the last of period
+                    {
+                        double aValue = mDocument->GetValue(ScAddress(inCol, inRow, inTab));
+                        pDocShell->GetDocFunc().SetValueCell(ScAddress(outCol, outRow, outTab), aValue, true);
+                        outRow++;
+                    }
+                    i++;
                 }
+                outCol++;
             }
-
-            nOutCol++;
+            outTab++;
         }
-        nOutTab++;
     }
 
-    ScRange aOutputRange(mOutputAddress, ScAddress(nOutCol,   nOutRow,   nOutTab) );
-
+    ScRange aOutputRange(mOutputAddress, ScAddress(outTab, outRow, outTab) );
     pUndoManager->LeaveListAction();
-
     pDocShell->PostPaint( aOutputRange, PAINT_GRID );
 }
 
@@ -248,4 +302,28 @@ IMPL_LINK_NOARG(ScSamplingDialog, LoseFocusHandler)
     return 0;
 }
 
+IMPL_LINK_NOARG(ScSamplingDialog, SamplingSizeValueModified)
+{
+    sal_Int64 aPopulationSize = mInputRange.aEnd.Row() - mInputRange.aStart.Row() + 1;
+    if (mpSampleSize->GetValue() > aPopulationSize)
+        mpSampleSize->SetValue(aPopulationSize);
+    return 0;
+}
+
+IMPL_LINK_NOARG(ScSamplingDialog, ToggleSamplingMethod)
+{
+    if (mpRandomMethodRadio->IsChecked())
+    {
+        mpPeriod->Enable(false);
+        mpSampleSize->Enable(true);
+    }
+    else if (mpPeriodicMethodRadio->IsChecked())
+    {
+        mpPeriod->Enable(true);
+        mpSampleSize->Enable(false);
+    }
+    return 0;
+}
+
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/source/ui/StatisticsDialogs/SamplingDialog.src b/sc/source/ui/StatisticsDialogs/SamplingDialog.src
new file mode 100644
index 000000000000..e7eef3ac9ccb
--- /dev/null
+++ b/sc/source/ui/StatisticsDialogs/SamplingDialog.src
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "globstr.hrc"
+
+String STR_SAMPLING_UNDO_NAME
+{
+    Text [ en-US ] = "Sampling";
+};
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/source/ui/inc/SamplingDialog.hxx b/sc/source/ui/inc/SamplingDialog.hxx
index b46524a940bf..c57390586013 100644
--- a/sc/source/ui/inc/SamplingDialog.hxx
+++ b/sc/source/ui/inc/SamplingDialog.hxx
@@ -42,6 +42,12 @@ private:
     formula::RefEdit*   mpOutputRangeEdit;
     formula::RefButton* mpOutputRangeButton;
 
+    NumericField*       mpSampleSize;
+    NumericField*       mpPeriod;
+
+    RadioButton*        mpRandomMethodRadio;
+    RadioButton*        mpPeriodicMethodRadio;
+
     PushButton*         mpButtonApply;
     OKButton*           mpButtonOk;
     CancelButton*       mpButtonCancel;
@@ -70,7 +76,8 @@ private:
     DECL_LINK( ApplyClicked,     PushButton* );
     DECL_LINK( GetFocusHandler,  Control* );
     DECL_LINK( LoseFocusHandler, void* );
-
+    DECL_LINK( SamplingSizeValueModified, void* );
+    DECL_LINK( ToggleSamplingMethod, void* );
 };
 
 #endif
diff --git a/sc/uiconfig/scalc/ui/samplingdialog.ui b/sc/uiconfig/scalc/ui/samplingdialog.ui
index 690c37a53870..cd6bd2155a25 100644
--- a/sc/uiconfig/scalc/ui/samplingdialog.ui
+++ b/sc/uiconfig/scalc/ui/samplingdialog.ui
@@ -2,9 +2,17 @@
 <interface>
   <!-- interface-requires gtk+ 3.0 -->
   <!-- interface-requires LibreOffice 1.0 -->
+  <object class="GtkAdjustment" id="period-adjustment">
+    <property name="lower">1</property>
+    <property name="upper">100</property>
+    <property name="value">1</property>
+    <property name="step_increment">1</property>
+    <property name="page_increment">10</property>
+  </object>
   <object class="GtkDialog" id="SamplingDialog">
     <property name="can_focus">False</property>
     <property name="border_width">5</property>
+    <property name="title" translatable="yes">Sampling</property>
     <property name="type_hint">dialog</property>
     <child internal-child="vbox">
       <object class="GtkBox" id="dialog-vbox1">
@@ -70,119 +78,240 @@
           </packing>
         </child>
         <child>
-          <object class="GtkFrame" id="frame1">
+          <object class="GtkGrid" id="grid1">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
-            <property name="label_xalign">0</property>
-            <property name="shadow_type">none</property>
+            <property name="row_spacing">6</property>
+            <property name="column_spacing">12</property>
+            <child>
+              <object class="GtkLabel" id="input-range-label">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="xalign">0</property>
+                <property name="label" translatable="yes">Input Range</property>
+              </object>
+              <packing>
+                <property name="left_attach">0</property>
+                <property name="top_attach">0</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="foruilo-RefEdit" id="input-range-edit">
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="valign">center</property>
+                <property name="hexpand">True</property>
+                <property name="invisible_char">•</property>
+                <property name="width_chars">30</property>
+                <property name="invisible_char_set">True</property>
+              </object>
+              <packing>
+                <property name="left_attach">1</property>
+                <property name="top_attach">0</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="foruilo-RefButton" id="input-range-button">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="left_attach">2</property>
+                <property name="top_attach">0</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLabel" id="output-range-label">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="xalign">0</property>
+                <property name="label" translatable="yes">Output Range</property>
+              </object>
+              <packing>
+                <property name="left_attach">0</property>
+                <property name="top_attach">1</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
             <child>
-              <object class="GtkAlignment" id="alignment1">
+              <object class="foruilo-RefEdit" id="output-range-edit">
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="valign">center</property>
+                <property name="hexpand">True</property>
+                <property name="invisible_char">•</property>
+                <property name="width_chars">30</property>
+                <property name="invisible_char_set">True</property>
+              </object>
+              <packing>
+                <property name="left_attach">1</property>
+                <property name="top_attach">1</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="foruilo-RefButton" id="output-range-button">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="left_padding">12</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="left_attach">2</property>
+                <property name="top_attach">1</property>
+                <property name="width">1</property>
+                <property name="height">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkFrame" id="frame2">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label_xalign">0</property>
+                <property name="shadow_type">in</property>
                 <child>
-                  <object class="GtkGrid" id="grid1">
+                  <object class="GtkAlignment" id="alignment2">
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
-                    <property name="row_spacing">6</property>
-                    <property name="column_spacing">12</property>
-                    <child>
-                      <object class="GtkLabel" id="input-range-label">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <property name="xalign">0</property>
-                        <property name="label" translatable="yes">Input Range</property>
-                      </object>
-                      <packing>
-                        <property name="left_attach">0</property>
-                        <property name="top_attach">0</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
-                    </child>
+                    <property name="top_padding">6</property>
+                    <property name="bottom_padding">6</property>
+                    <property name="left_padding">12</property>
+                    <property name="right_padding">12</property>
                     <child>
-                      <object class="foruilo-RefEdit" id="input-range-edit">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="valign">center</property>
-                        <property name="hexpand">True</property>
-                        <property name="invisible_char">•</property>
-                        <property name="invisible_char_set">True</property>
-                      </object>
-                      <packing>
-                        <property name="left_attach">1</property>
-                        <property name="top_attach">0</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="foruilo-RefButton" id="input-range-button">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <property name="receives_default">True</property>
-                      </object>
-                      <packing>
-                        <property name="left_attach">2</property>
-                        <property name="top_attach">0</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkLabel" id="output-range-label">
+                      <object class="GtkGrid" id="grid2">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
-                        <property name="xalign">0</property>
-                        <property name="label" translatable="yes">Output Range</property>
+                        <property name="row_spacing">6</property>
+                        <property name="column_spacing">12</property>
+                        <child>
+                          <object class="GtkSpinButton" id="sample-size-spin">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="hexpand">True</property>
+                            <property name="invisible_char">•</property>
+                            <property name="invisible_char_set">True</property>
+                            <property name="adjustment">sample-size-adjustment</property>
+                            <property name="update_policy">if-valid</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">1</property>
+                            <property name="top_attach">1</property>
+                            <property name="width">1</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkLabel" id="label1">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="margin_left">12</property>
+                            <property name="hexpand">True</property>
+                            <property name="xalign">0</property>
+                            <property name="label" translatable="yes">Sample SIze</property>
+                            <property name="justify">center</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">0</property>
+                            <property name="top_attach">1</property>
+                            <property name="width">1</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkRadioButton" id="random-method-radio">
+                            <property name="label" translatable="yes">Random</property>
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="receives_default">False</property>
+                            <property name="xalign">0</property>
+                            <property name="draw_indicator">True</property>
+                            <property name="group">periodic-method-radio</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">0</property>
+                            <property name="top_attach">0</property>
+                            <property name="width">2</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkRadioButton" id="periodic-method-radio">
+                            <property name="label" translatable="yes">Periodic</property>
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="receives_default">False</property>
+                            <property name="xalign">0</property>
+                            <property name="draw_indicator">True</property>
+                            <property name="group">random-method-radio</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">0</property>
+                            <property name="top_attach">2</property>
+                            <property name="width">2</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkSpinButton" id="period-spin">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="hexpand">True</property>
+                            <property name="invisible_char">•</property>
+                            <property name="invisible_char_set">True</property>
+                            <property name="adjustment">period-adjustment</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">1</property>
+                            <property name="top_attach">3</property>
+                            <property name="width">1</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkLabel" id="label3">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="margin_left">12</property>
+                            <property name="hexpand">True</property>
+                            <property name="xalign">0</property>
+                            <property name="label" translatable="yes">Period</property>
+                          </object>
+                          <packing>
+                            <property name="left_attach">0</property>
+                            <property name="top_attach">3</property>
+                            <property name="width">1</property>
+                            <property name="height">1</property>
+                          </packing>
+                        </child>
                       </object>
-                      <packing>
-                        <property name="left_attach">0</property>
-                        <property name="top_attach">1</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="foruilo-RefEdit" id="output-range-edit">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="valign">center</property>
-                        <property name="hexpand">True</property>
-                        <property name="invisible_char">•</property>
-                        <property name="invisible_char_set">True</property>
-                      </object>
-                      <packing>
-                        <property name="left_attach">1</property>
-                        <property name="top_attach">1</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="foruilo-RefButton" id="output-range-button">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <property name="receives_default">True</property>
-                      </object>
-                      <packing>
-                        <property name="left_attach">2</property>
-                        <property name="top_attach">1</property>
-                        <property name="width">1</property>
-                        <property name="height">1</property>
-                      </packing>
                     </child>
                   </object>
                 </child>
+                <child type="label">
+                  <object class="GtkLabel" id="label2">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="label" translatable="yes">Sampling Method</property>
+                    <attributes>
+                      <attribute name="weight" value="bold"/>
+                    </attributes>
+                  </object>
+                </child>
               </object>
-            </child>
-            <child type="label">
-              <object class="GtkLabel" id="sampling-label">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property name="xalign">0.4699999988079071</property>
-                <property name="label" translatable="yes">Sampling</property>
-              </object>
+              <packing>
+                <property name="left_attach">0</property>
+                <property name="top_attach">2</property>
+                <property name="width">3</property>
+                <property name="height">1</property>
+              </packing>
             </child>
           </object>
           <packing>
@@ -199,4 +328,9 @@
       <action-widget response="0">cancel</action-widget>
     </action-widgets>
   </object>
+  <object class="GtkAdjustment" id="sample-size-adjustment">
+    <property name="upper">100</property>
+    <property name="step_increment">1</property>
+    <property name="page_increment">10</property>
+  </object>
 </interface>