Support for per-PV tolerance and compare mode in save&restore

app/save-and-restore/app/doc/index.rst

@@ -157,7 +157,7 @@ Configuration View
 ------------------
 
 A new configuration is created from the context menu launched when right-clicking on a folder node in the tree view.
-This will launch the configuration editor:
+This screenshot shows the configuration editor:
 
 .. image:: images/configuration-editor.png
    :width: 80%
@@ -170,6 +170,9 @@ with PVs in the order they appear.
 
 PV entries in a configuration marked as read only will be omitted whe performing a restore operation.
 
+Compare Mode and Tolerance data is optional. This is used by the service when a client requests comparison between
+stored and live values of a snapshot. More information on this feature is found in the service documentation.
+
 To add a very large number of PVs, user should consider the import feature available via the "Import Configuration file to this folder"
 option in the context menu of a folder node in the tree view.
 

app/save-and-restore/app/src/main/java/org/phoebus/applications/saveandrestore/Messages.java

@@ -79,6 +79,7 @@ public class Messages {
     public static String duplicatePVNamesAdditionalItems;
     public static String duplicatePVNamesCheckFailed;
     public static String duplicatePVNamesFoundInSelection;
+    public static String duplicatePVNamesNotSupported;
     public static String Edit;
     public static String editFilter;
     public static String errorActionFailed;

app/save-and-restore/app/src/main/java/org/phoebus/applications/saveandrestore/ui/configuration/ConfigPvEntry.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2024 European Spallation Source ERIC.
+ */
+
+package org.phoebus.applications.saveandrestore.ui.configuration;
+
+import javafx.beans.property.BooleanProperty;
+import javafx.beans.property.ObjectProperty;
+import javafx.beans.property.SimpleBooleanProperty;
+import javafx.beans.property.SimpleObjectProperty;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import org.phoebus.applications.saveandrestore.model.Comparison;
+import org.phoebus.applications.saveandrestore.model.ConfigPv;
+import org.phoebus.applications.saveandrestore.model.ComparisonMode;
+
+import java.util.Objects;
+
+/**
+ * Wrapper around a {@link ConfigPv} instance for the purpose of facilitating
+ * configuration and data binding in (for instance) a {@link javafx.scene.control.TableView}.
+ */
+public class ConfigPvEntry implements Comparable<ConfigPvEntry> {
+
+    private final StringProperty pvNameProperty;
+    private final StringProperty readBackPvNameProperty;
+    private final BooleanProperty readOnlyProperty;
+    private final ObjectProperty<ComparisonMode> comparisonModeProperty;
+    private final ObjectProperty<Double> toleranceProperty;
+
+    public ConfigPvEntry(ConfigPv configPv) {
+        this.pvNameProperty = new SimpleStringProperty(this, "pvNameProperty", configPv.getPvName());
+        this.readBackPvNameProperty = new SimpleStringProperty(configPv.getReadbackPvName());
+        this.readOnlyProperty = new SimpleBooleanProperty(configPv.isReadOnly());
+        this.comparisonModeProperty = new SimpleObjectProperty<>(configPv.getComparison() == null ? null : configPv.getComparison().getComparisonMode());
+        this.toleranceProperty = new SimpleObjectProperty<>(configPv.getComparison() == null ? null : configPv.getComparison().getTolerance());
+    }
+
+    public StringProperty getPvNameProperty() {
+        return pvNameProperty;
+    }
+
+    public StringProperty getReadBackPvNameProperty() {
+        return readBackPvNameProperty;
+    }
+
+    public BooleanProperty getReadOnlyProperty() {
+        return readOnlyProperty;
+    }
+
+    public ObjectProperty<ComparisonMode> getComparisonModeProperty() {
+        return comparisonModeProperty;
+    }
+
+    public ObjectProperty<Double> getToleranceProperty() {
+        return toleranceProperty;
+    }
+
+    public void setPvNameProperty(String pvNameProperty) {
+        this.pvNameProperty.set(pvNameProperty);
+    }
+
+    public void setReadBackPvNameProperty(String readBackPvNameProperty) {
+        this.readBackPvNameProperty.set(readBackPvNameProperty);
+    }
+
+    public void setComparisonModeProperty(ComparisonMode comparisonModeProperty) {
+        this.comparisonModeProperty.set(comparisonModeProperty);
+    }
+
+    public void setToleranceProperty(Double toleranceProperty) {
+        this.toleranceProperty.set(toleranceProperty );
+    }
+
+    public ConfigPv toConfigPv() {
+        ConfigPv configPv = ConfigPv.builder()
+                .pvName(pvNameProperty.get())
+                .readbackPvName(readBackPvNameProperty.get())
+                .readOnly(readOnlyProperty.get())
+                .build();
+        if(comparisonModeProperty.isNotNull().get() && toleranceProperty.isNotNull().get()){
+            configPv.setComparison(new Comparison(comparisonModeProperty.get(), toleranceProperty.get()));
+        }
+        return configPv;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof ConfigPvEntry otherConfigPv) {
+            return Objects.equals(pvNameProperty, otherConfigPv.getPvNameProperty()) &&
+                    Objects.equals(readBackPvNameProperty, otherConfigPv.getReadBackPvNameProperty()) &&
+                    Objects.equals(readOnlyProperty.get(), otherConfigPv.getReadOnlyProperty().get());
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(pvNameProperty, readBackPvNameProperty, readOnlyProperty);
+    }
+
+    @Override
+    public int compareTo(ConfigPvEntry other) {
+        return pvNameProperty.get().compareTo(other.getPvNameProperty().get());
+    }
+}