]> gerrit.simantics Code Review - simantics/platform.git/blobdiff - bundles/org.simantics.charts/src/org/simantics/charts/ui/CSVExportPage.java
Migrated source code from Simantics SVN
[simantics/platform.git] / bundles / org.simantics.charts / src / org / simantics / charts / ui / CSVExportPage.java
diff --git a/bundles/org.simantics.charts/src/org/simantics/charts/ui/CSVExportPage.java b/bundles/org.simantics.charts/src/org/simantics/charts/ui/CSVExportPage.java
new file mode 100644 (file)
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@@ -0,0 +1,628 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.charts.ui;\r
+\r
+import java.io.File;\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+import java.util.HashSet;\r
+import java.util.List;\r
+import java.util.Map;\r
+import java.util.Set;\r
+\r
+import org.eclipse.core.runtime.preferences.InstanceScope;\r
+import org.eclipse.jface.layout.GridDataFactory;\r
+import org.eclipse.jface.layout.GridLayoutFactory;\r
+import org.eclipse.jface.preference.IPreferenceStore;\r
+import org.eclipse.jface.wizard.WizardPage;\r
+import org.eclipse.swt.SWT;\r
+import org.eclipse.swt.custom.CCombo;\r
+import org.eclipse.swt.events.ModifyListener;\r
+import org.eclipse.swt.events.SelectionAdapter;\r
+import org.eclipse.swt.events.SelectionEvent;\r
+import org.eclipse.swt.events.SelectionListener;\r
+import org.eclipse.swt.layout.GridData;\r
+import org.eclipse.swt.widgets.Button;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.eclipse.swt.widgets.FileDialog;\r
+import org.eclipse.swt.widgets.Group;\r
+import org.eclipse.swt.widgets.Label;\r
+import org.eclipse.swt.widgets.Table;\r
+import org.eclipse.swt.widgets.TableItem;\r
+import org.eclipse.swt.widgets.Text;\r
+import org.eclipse.ui.preferences.ScopedPreferenceStore;\r
+import org.simantics.NameLabelUtil;\r
+import org.simantics.Simantics;\r
+import org.simantics.browsing.ui.common.ColumnKeys;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.databoard.parser.StringEscapeUtils;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.NamedResource;\r
+import org.simantics.db.common.request.IsParent;\r
+import org.simantics.db.common.request.UniqueRead;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.history.csv.ColumnSeparator;\r
+import org.simantics.history.csv.DecimalSeparator;\r
+import org.simantics.history.csv.ExportInterpolation;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.modeling.ModelingResources;\r
+import org.simantics.modeling.ModelingUtils;\r
+import org.simantics.modeling.preferences.CSVPreferences;\r
+import org.simantics.modeling.ui.modelBrowser2.label.SubscriptionItemLabelRule;\r
+import org.simantics.utils.datastructures.Arrays;\r
+import org.simantics.utils.datastructures.Pair;\r
+import org.simantics.utils.strings.AlphanumComparator;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public class CSVExportPage extends WizardPage {\r
+\r
+    CSVExportPlan       exportModel;\r
+    CCombo              model;\r
+    Table               item;\r
+    Button              selectAllItems;\r
+    SelectionAdapter    selectAllItemsListener;\r
+    CCombo              exportLocation;\r
+\r
+    CCombo decimalSeparator;\r
+    CCombo columnSeparator;\r
+    CCombo sampling;\r
+    Text timeStep;\r
+    Text startTime;\r
+    Text timeStamps;\r
+    CCombo samplingMode;\r
+    Text singlePrecision;\r
+    Text doublePrecision;\r
+\r
+    Group resampling;\r
+\r
+    Collection<Resource> initialSelection;\r
+\r
+    List<Pair<NamedResource,List<NamedResource>>> models = new ArrayList<>();\r
+\r
+    private Button      overwrite;\r
+\r
+    ModifyListener m = (e) -> validatePage();\r
+\r
+    SelectionListener s = new SelectionAdapter() {\r
+        @Override\r
+        public void widgetSelected(SelectionEvent e) {\r
+            validatePage();\r
+        }\r
+    };\r
+\r
+    protected CSVExportPage(CSVExportPlan model) {\r
+        super("Export CSV Data", "Define Export Properties", null);\r
+        this.exportModel = model;\r
+    }\r
+\r
+    @Override\r
+    public void createControl(Composite parent) {\r
+        Composite container = new Composite(parent, SWT.NONE);\r
+        GridLayoutFactory.swtDefaults().spacing(20, 10).numColumns(3).applyTo(container);\r
+        new Label(container, SWT.NONE).setText("Select a model:");\r
+        model = new CCombo(container, SWT.BORDER);\r
+        {\r
+            model.setEditable(false);\r
+            model.setText("");\r
+            model.setToolTipText("Selects the Model To Export From");\r
+            GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(model);\r
+        }\r
+\r
+        new Label(container, SWT.NONE).setText("Exported items:");\r
+        item = new Table(container, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION | SWT.CHECK);\r
+        {\r
+            item.setToolTipText("Selects the Subscription Items");\r
+            GridDataFactory.fillDefaults().grab(true, false).span(2, 1).hint(SWT.DEFAULT, 105).applyTo(item);\r
+        }\r
+        item.addSelectionListener(new SelectionAdapter() {\r
+            @Override\r
+            public void widgetSelected(SelectionEvent e) {\r
+                if (e.detail == SWT.CHECK) {\r
+                    TableItem[] selected = item.getSelection();\r
+                    TableItem it = (TableItem) e.item;\r
+                    boolean checkedWasSelected = Arrays.contains(selected, it);\r
+                    if (checkedWasSelected) {\r
+                        boolean check = it.getChecked();\r
+                        for (TableItem i : selected)\r
+                            i.setChecked(check);\r
+                    }\r
+                    int checked = countCheckedItems(item);\r
+                    int totalItems = item.getItemCount();\r
+                    updateSelectAll(checked > 0, checked < totalItems, false);\r
+                    validatePage();\r
+                }\r
+            }\r
+        });\r
+        new Label(container, 0);\r
+        selectAllItems = new Button(container, SWT.CHECK);\r
+        {\r
+            selectAllItems.setText("&Select All");\r
+            selectAllItems.setToolTipText("Select/Deselect All Listed Subscription Items");\r
+            GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(selectAllItems);\r
+        }\r
+        selectAllItemsListener = new SelectionAdapter() {\r
+            @Override\r
+            public void widgetSelected(SelectionEvent e) {\r
+                boolean select = selectAllItems.getSelection();\r
+                updateSelectAll(select, false, false);\r
+                item.setRedraw(false);\r
+                for (TableItem it : item.getItems())\r
+                    it.setChecked(select);\r
+                item.setRedraw(true);\r
+\r
+                validatePage();\r
+            }\r
+        };\r
+        selectAllItems.addSelectionListener(selectAllItemsListener);\r
+\r
+        new Label(container, SWT.NONE).setText("&Output file:");\r
+        exportLocation = new CCombo(container, SWT.BORDER);\r
+        {\r
+            exportLocation.setText("");\r
+            GridDataFactory.fillDefaults().grab(true, false).span(1, 1).applyTo(exportLocation);\r
+            exportLocation.addModifyListener(m);\r
+        }\r
+        Button browseFileButton = new Button(container, SWT.PUSH);\r
+        {\r
+            browseFileButton.setText("Browse...");\r
+            browseFileButton.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false));\r
+            browseFileButton.addSelectionListener(new SelectionAdapter() {\r
+                @Override\r
+                public void widgetSelected(SelectionEvent e) {\r
+                    FileDialog dialog = new FileDialog(getShell(), SWT.SAVE);\r
+                    dialog.setText("Choose Output File");\r
+                    dialog.setFilterPath(new File(exportLocation.getText()).getParent());\r
+                    dialog.setFilterExtensions(new String[] { "*.csv" });\r
+                    dialog.setFilterNames(new String[] { "Comma separated values (*.csv)" });\r
+                    dialog.setOverwrite(false);\r
+                    String file = dialog.open();\r
+                    if (file == null)\r
+                        return;\r
+                    exportLocation.setText(file);\r
+                    validatePage();\r
+                }\r
+            });\r
+        }\r
+\r
+        \r
+        Label horizRule = new Label(container, SWT.BORDER);\r
+        GridDataFactory.fillDefaults().hint(SWT.DEFAULT, 0).grab(true, false).span(3, 1).applyTo(horizRule);\r
+\r
+        new Label(container, SWT.NONE).setText("&Decimal separator:");\r
+        decimalSeparator = new CCombo(container, SWT.READ_ONLY | SWT.BORDER);\r
+        for(DecimalSeparator s : DecimalSeparator.values())\r
+            decimalSeparator.add(s.label);\r
+        decimalSeparator.select(0);\r
+        decimalSeparator.addSelectionListener(s);\r
+        GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(decimalSeparator);\r
+\r
+        new Label(container, SWT.NONE).setText("&Column separator:");\r
+        columnSeparator = new CCombo(container, SWT.READ_ONLY | SWT.BORDER);\r
+        for(ColumnSeparator s : ColumnSeparator.values())\r
+            columnSeparator.add(s.label);\r
+        columnSeparator.select(0);\r
+        columnSeparator.addSelectionListener(s);\r
+        GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(columnSeparator);\r
+\r
+        new Label(container, SWT.NONE).setText("Sampling:");\r
+        sampling = new CCombo(container, SWT.READ_ONLY | SWT.BORDER);\r
+        sampling.add("Recorded samples");\r
+        sampling.add("Resampled");\r
+        sampling.select(0);\r
+        sampling.addSelectionListener(s);\r
+        GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(sampling);\r
+\r
+        resampling = new Group(container, SWT.NONE);\r
+               resampling.setText("Resampling settings (not used with recorded samples)");\r
+        GridDataFactory.fillDefaults().grab(true, false).span(3, 1).applyTo(resampling);\r
+        GridLayoutFactory.swtDefaults().numColumns(3).applyTo(resampling);\r
+\r
+        new Label(resampling, SWT.NONE).setText("&Start time:");\r
+        startTime = new Text(resampling, SWT.BORDER);\r
+        startTime.addModifyListener(m);\r
+        GridDataFactory.fillDefaults().grab(true, false).applyTo(startTime);\r
+        new Label(resampling, SWT.NONE).setText(" seconds");\r
+\r
+        new Label(resampling, SWT.NONE).setText("&Time step:");\r
+        timeStep = new Text(resampling, SWT.BORDER);\r
+        timeStep.addModifyListener(m);\r
+        GridDataFactory.fillDefaults().grab(true, false).applyTo(timeStep);\r
+        new Label(resampling, SWT.NONE).setText(" seconds");\r
+        \r
+        new Label(resampling, SWT.NONE).setText("Sampling mode:");\r
+        samplingMode = new CCombo(resampling, SWT.READ_ONLY | SWT.BORDER);\r
+        samplingMode.add("Linear interpolation");\r
+        samplingMode.add("Previous sample");\r
+        samplingMode.select(0);\r
+        samplingMode.addSelectionListener(s);\r
+        GridDataFactory.fillDefaults().grab(true, false).span(2,1).applyTo(samplingMode);\r
+\r
+        Group digits = new Group(container, SWT.NONE);\r
+        digits.setText("Significant digits");\r
+        GridDataFactory.fillDefaults().grab(true, false).span(3, 1).applyTo(digits);\r
+        GridLayoutFactory.swtDefaults().numColumns(2).applyTo(digits);\r
+\r
+        new Label(digits, SWT.NONE).setText("&Time stamps:");\r
+        timeStamps = new Text(digits, SWT.BORDER);\r
+        timeStamps.addModifyListener(m);\r
+        GridDataFactory.fillDefaults().grab(true, false).applyTo(timeStamps);\r
+        \r
+        new Label(digits, SWT.NONE).setText("&Single precision floating point:");\r
+        singlePrecision = new Text(digits, SWT.BORDER);\r
+        singlePrecision.addModifyListener(m);\r
+        GridDataFactory.fillDefaults().grab(true, false).applyTo(singlePrecision);\r
+\r
+        new Label(digits, SWT.NONE).setText("&Double precision floating point:");\r
+        doublePrecision = new Text(digits, SWT.BORDER);\r
+        doublePrecision.addModifyListener(m);\r
+        GridDataFactory.fillDefaults().grab(true, false).applyTo(doublePrecision);\r
+\r
+        overwrite = new Button(container, SWT.CHECK);\r
+        overwrite.setText("&Overwrite existing files without warning");\r
+        overwrite.setSelection(exportModel.overwrite);\r
+        GridDataFactory.fillDefaults().grab(true, false).span(3, 1).applyTo(overwrite);\r
+        overwrite.addSelectionListener(new SelectionAdapter() {\r
+            @Override\r
+            public void widgetSelected(SelectionEvent e) {\r
+                validatePage();\r
+            }\r
+        });\r
+\r
+        try {\r
+            initializeData();\r
+        } catch (DatabaseException e) {\r
+            e.printStackTrace();\r
+        }\r
+\r
+        model.addSelectionListener(s);\r
+\r
+        setControl(container);\r
+        validatePage();\r
+        \r
+    }\r
+\r
+    void updateSelectAll(boolean checked, boolean gray, boolean notify) {\r
+        if (checked) {\r
+            selectAllItems.setText("Select None");\r
+        } else {\r
+            selectAllItems.setText("Select All");\r
+        }\r
+        if (!notify)\r
+            selectAllItems.removeSelectionListener(selectAllItemsListener);\r
+        selectAllItems.setGrayed(checked && gray);\r
+        selectAllItems.setSelection(checked);\r
+        if (!notify)\r
+            selectAllItems.addSelectionListener(selectAllItemsListener);\r
+    }\r
+\r
+    protected int countCheckedItems(Table table) {\r
+        int ret = 0;\r
+        for (TableItem item : table.getItems())\r
+            ret += item.getChecked() ? 1 : 0;\r
+        return ret;\r
+    }\r
+\r
+    private void initializeData() throws DatabaseException {\r
+\r
+        // Write preferences to formatter\r
+        IPreferenceStore csvnode = new ScopedPreferenceStore( InstanceScope.INSTANCE, CSVPreferences.P_NODE );\r
+        \r
+        Double startTime =  csvnode.getDouble(CSVPreferences.P_CSV_START_TIME);\r
+        Double timeStep =  csvnode.getDouble(CSVPreferences.P_CSV_TIME_STEP);\r
+        String decimalSeparator = csvnode.getString(CSVPreferences.P_CSV_DECIMAL_SEPARATOR);\r
+        String columnSeparator = StringEscapeUtils.unescape( csvnode.getString(CSVPreferences.P_CSV_COLUMN_SEPARATOR) );\r
+        Boolean resample = csvnode.getBoolean(CSVPreferences.P_CSV_RESAMPLE);\r
+        String samplingModePreference = csvnode.getString(CSVPreferences.P_CSV_SAMPLING_MODE);\r
+        int timeDigits = csvnode.getInt(CSVPreferences.P_CSV_TIME_DIGITS);\r
+        int floatDigits = csvnode.getInt(CSVPreferences.P_CSV_FLOAT_DIGITS);\r
+        int doubleDigits = csvnode.getInt(CSVPreferences.P_CSV_DOUBLE_DIGITS);\r
+        \r
+       initialSelection =  ISelectionUtils.getPossibleKeys(exportModel.selection, SelectionHints.KEY_MAIN, Resource.class);\r
+\r
+        models = exportModel.sessionContext.getSession().syncRequest(new UniqueRead<List<Pair<NamedResource,List<NamedResource>>>>() {\r
+\r
+                       @Override\r
+                       public List<Pair<NamedResource,List<NamedResource>>> perform(ReadGraph graph) throws DatabaseException {\r
+                               Layer0 L0 = Layer0.getInstance(graph);\r
+                               ModelingResources MOD = ModelingResources.getInstance(graph);\r
+                               List<Pair<NamedResource,List<NamedResource>>> result = new ArrayList<>();\r
+                               for(Resource model : graph.syncRequest(new org.simantics.db.layer0.request.ProjectModels(Simantics.getProjectResource()))) {\r
+                                       String name = graph.getPossibleRelatedValue(model, L0.HasName, Bindings.STRING);\r
+                                       if(name == null) continue;\r
+                                       name = NameLabelUtil.modalName(graph, model);\r
+                                       List<NamedResource> subs = new ArrayList<>();\r
+                                       for(Resource item : ModelingUtils.searchByType(graph, model, MOD.Subscription_Item)) {\r
+                                               String subscriptionLabel = null;\r
+                                               Resource subscription = graph.getPossibleObject(item, L0.PartOf);\r
+                                               if(subscription != null) {\r
+                                                       subscriptionLabel = graph.getPossibleRelatedValue(subscription, L0.HasLabel, Bindings.STRING);\r
+                                               }\r
+                                               SubscriptionItemLabelRule rule = new SubscriptionItemLabelRule();\r
+                                               Map<String,String> map = rule.getLabel(graph, item); \r
+                                               String label = map.get(ColumnKeys.SINGLE);\r
+                                               if(label == null) continue;\r
+                                               if(subscriptionLabel != null) label = subscriptionLabel + "/" + label;\r
+                                               subs.add(new NamedResource(label, item));\r
+                                       }\r
+                                       subs.sort((o1,o2) -> AlphanumComparator.CASE_INSENSITIVE_COMPARATOR.compare(o1.getName(), o2.getName()));\r
+                                       result.add(new Pair<>(new NamedResource(name, model), subs));\r
+                               }\r
+                               return result;\r
+                       }\r
+               \r
+        });\r
+        \r
+        Set<NamedResource> selected = exportModel.sessionContext.getSession().syncRequest(new UniqueRead<Set<NamedResource>>() {\r
+\r
+                       @Override\r
+                       public Set<NamedResource> perform(ReadGraph graph) throws DatabaseException {\r
+\r
+                               if(initialSelection == null) return Collections.emptySet();\r
+\r
+                               HashSet<NamedResource> result = new HashSet<>();\r
+                               \r
+                               for(Pair<NamedResource,List<NamedResource>> p : models) {\r
+                       for(NamedResource nr : p.second) {\r
+                               for(Resource i : initialSelection) {\r
+                                       if(graph.syncRequest(new IsParent(i, nr.getResource()))) result.add(nr);\r
+                               }\r
+                       }\r
+                               }\r
+                               return result;\r
+                       }\r
+               \r
+        });\r
\r
+\r
+        for(int i=0;i<models.size();i++) {\r
+               \r
+               Pair<NamedResource,List<NamedResource>> p = models.get(i);\r
+            model.add(p.first.getName());\r
+\r
+            boolean hasInitial = false;\r
+            for(NamedResource nr : p.second) {\r
+               if(selected.contains(nr)) hasInitial = true;\r
+            }\r
+            if(hasInitial) {\r
+               model.select(i);\r
+               item.removeAll();\r
+               exportModel.models.clear();\r
+               int index = 0;\r
+               int firstIndex = 0;\r
+               for(NamedResource nr : p.second) {\r
+                       TableItem ti = new TableItem(item, SWT.NONE);\r
+                       ti.setText(nr.getName());\r
+                       ti.setData(nr);\r
+                       if(selected.contains(nr)) {\r
+                               exportModel.models.add(nr);\r
+                               ti.setChecked(true);\r
+                               if(firstIndex == 0) firstIndex = index;\r
+                       }\r
+                       index++;\r
+               }\r
+               item.setTopIndex(firstIndex);\r
+               item.setData(p.first);\r
+            }\r
+            \r
+        }\r
+        \r
+        this.decimalSeparator.select(DecimalSeparator.fromPreference(decimalSeparator).ordinal());\r
+        this.columnSeparator.select(ColumnSeparator.fromPreference(columnSeparator).ordinal());\r
+        \r
+        if(resample) {\r
+               this.sampling.select(1);\r
+        } else {\r
+               this.sampling.select(0);\r
+        }\r
+        \r
+        this.samplingMode.select(ExportInterpolation.fromPreference(samplingModePreference).index());\r
+        \r
+        this.startTime.setText("" + startTime);\r
+        this.timeStep.setText("" + timeStep);\r
+        this.timeStamps.setText("" + timeDigits);\r
+        this.singlePrecision.setText("" + floatDigits);\r
+        this.doublePrecision.setText("" + doubleDigits);\r
+        \r
+        for (String path : exportModel.recentLocations) {\r
+            exportLocation.add(path);\r
+        }\r
+        if (exportLocation.getItemCount() > 0)\r
+            exportLocation.select(0);\r
+        \r
+    }\r
+\r
+    Integer validInteger(String s) {\r
+       try {\r
+               return Integer.parseInt(s);\r
+       } catch (NumberFormatException e) {\r
+               return null;\r
+       }\r
+    }\r
+\r
+    Double validDouble(String s) {\r
+       try {\r
+               return Double.parseDouble(s);\r
+       } catch (NumberFormatException e) {\r
+               return null;\r
+       }\r
+    }\r
+    \r
+    Pair<NamedResource,List<NamedResource>> getModel(String name) {\r
+       for(Pair<NamedResource,List<NamedResource>> data : models) {\r
+               if(data.first.getName().equals(name)) return data;\r
+       }\r
+       return null;\r
+    }\r
+    \r
+    void validatePage() {\r
+\r
+       boolean resample = sampling.getText().equals("Resampled"); \r
+       \r
+       if(resample) {\r
+               resampling.setText("Resampling settings");\r
+               timeStep.setEnabled(true);\r
+               startTime.setEnabled(true);\r
+               samplingMode.setEnabled(true);\r
+       } else {\r
+               resampling.setText("Resampling settings (not used with recorded samples)");\r
+               timeStep.setEnabled(false);\r
+               startTime.setEnabled(false);\r
+               samplingMode.setEnabled(false);\r
+       }\r
+       \r
+       String selectedModel = model.getText();\r
+       Pair<NamedResource,List<NamedResource>> p = getModel(selectedModel);\r
+       if(p != null) {\r
+               \r
+               HashSet<NamedResource> checked = new HashSet<>();\r
+               \r
+               NamedResource existing = (NamedResource)item.getData();\r
+               if(!p.first.equals(existing)) {\r
+               \r
+                       item.removeAll();\r
+                       for(NamedResource nr : p.second) {\r
+                               TableItem ti = new TableItem(item, SWT.NONE);\r
+                               ti.setText(nr.getName());\r
+                               ti.setData(nr);\r
+                       }\r
+                       item.setData(p.first);\r
+                       \r
+               }\r
+               \r
+               for(TableItem ti : item.getItems()) {\r
+                       if(ti.getChecked()) checked.add((NamedResource)ti.getData());\r
+               }\r
+               \r
+               exportModel.models = checked;\r
+               \r
+       }\r
+\r
+       Double validStartTime = validDouble(startTime.getText());\r
+       Double validStepSize = validDouble(timeStep.getText());\r
+\r
+       if(resample) {\r
+               \r
+            if(validStartTime == null) {\r
+                setErrorMessage("Start time must be a number.");\r
+                setPageComplete(false);\r
+                return;\r
+            }\r
+            \r
+            if(validStepSize == null) {\r
+                setErrorMessage("Step size must be a number.");\r
+                setPageComplete(false);\r
+                return;\r
+            }\r
+            if(validStepSize <= 0) {\r
+                setErrorMessage("Step size must be greater than 0.");\r
+                setPageComplete(false);\r
+                return;\r
+            }\r
+\r
+       } else {\r
+               \r
+               if(exportModel.models.size() > 1) {\r
+                setErrorMessage("Recorded samples can only be exported for a single subscription item.");\r
+                setPageComplete(false);\r
+                return;\r
+               }\r
+\r
+       }\r
+       \r
+       if(item.getItemCount() == 0) {\r
+            setErrorMessage("No subscription items in selected model.");\r
+            setPageComplete(false);\r
+            return;\r
+       }\r
+       \r
+        if (exportModel.models.isEmpty()) {\r
+            setErrorMessage("No items selected for export.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+        \r
+        String exportLoc = exportLocation.getText();\r
+        if (exportLoc.isEmpty()) {\r
+            setErrorMessage("Select output file.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+        File file = new File(exportLoc);\r
+        if (file.isDirectory()) {\r
+            setErrorMessage("The output file is a directory.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+        File parent = file.getParentFile();\r
+        if (parent == null || !parent.isDirectory()) {\r
+            setErrorMessage("The output directory does not exist.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+\r
+        exportModel.columnSeparator = ColumnSeparator.fromIndex(columnSeparator.getSelectionIndex());\r
+        exportModel.decimalSeparator = DecimalSeparator.fromIndex(decimalSeparator.getSelectionIndex());\r
+        if (exportModel.columnSeparator.preference.equals(exportModel.decimalSeparator.preference)) {\r
+            setErrorMessage("Decimal and column separator cannot be the same character.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+\r
+        Integer validTimeDigits = validInteger(timeStamps.getText());\r
+\r
+        if(validTimeDigits == null) {\r
+            setErrorMessage("Time stamps needs to be an integer number.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+\r
+        Integer validSinglePrecision = validInteger(singlePrecision.getText());\r
+        if(validSinglePrecision == null) {\r
+            setErrorMessage("Single precision needs to be an integer number.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+\r
+        Integer validDoublePrecision = validInteger(doublePrecision.getText());\r
+        if(validDoublePrecision == null) {\r
+            setErrorMessage("Double precision needs to be an integer number.");\r
+            setPageComplete(false);\r
+            return;\r
+        }\r
+\r
+        exportModel.exportLocation = file;\r
+        exportModel.overwrite = overwrite.getSelection();\r
+\r
+        exportModel.startTime = validStartTime;\r
+        exportModel.timeStep = validStepSize;\r
+\r
+        exportModel.resample = sampling.getSelectionIndex() == 1;\r
+        exportModel.samplingMode = ExportInterpolation.fromIndex(samplingMode.getSelectionIndex());\r
+        \r
+        exportModel.timeDigits = validTimeDigits;\r
+        exportModel.floatDigits = validSinglePrecision;\r
+        exportModel.doubleDigits = validDoublePrecision;\r
+        \r
+        setErrorMessage(null);\r
+        setMessage("Press Finish to export subscription data.");\r
+        setPageComplete(true);\r
+        \r
+    }\r
+\r
+}\r