Modified VariableHtmlBox to make use of HtmlTemplate helper class.

CPS/src/lu/list/itis/dkd/tui/utility/HtmlTemplate.java

@@ -62,6 +62,12 @@ public class HtmlTemplate implements VariableBased {
 
     // ---------------------------------------------------------------------------
 
+    public boolean dependsOnVariables() {
+        return !this.identifiers.isEmpty();
+    }
+
+    // ---------------------------------------------------------------------------
+
     public String render() {
         return Interpolator.render(chunks);
     }

CPS/src/lu/list/itis/dkd/tui/widget/corona/VariableHtmlBox.java

@@ -17,14 +17,9 @@ import lu.list.itis.dkd.tui.cps.InputChangeListener;
 import lu.list.itis.dkd.tui.cps.InputEvent;
 import lu.list.itis.dkd.tui.cps.system.VariableBased;
 import lu.list.itis.dkd.tui.cps.variable.Variable;
-import lu.list.itis.dkd.tui.utility.interpolation.Chunk;
-import lu.list.itis.dkd.tui.utility.interpolation.Interpolator;
+import lu.list.itis.dkd.tui.utility.HtmlTemplate;
 import lu.list.itis.dkd.tui.widget.corona.builder.BaseVariableHtmlBoxBuilder;
 
-import org.python.google.common.base.Strings;
-
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -41,10 +36,7 @@ import java.util.Map;
 
 public class VariableHtmlBox extends HtmlBox implements VariableBased, InputChangeListener {
 
-    private String htmlTemplate;
-    private List<Chunk<?>> htmlChunks;
-    private List<String> identifiers;
-    private Map<String, Variable<?>> parameters;
+    private HtmlTemplate htmlTemplate;
 
     // ---------------------------------------------------------------------------
     // ***************************************************************************
@@ -58,16 +50,9 @@ public class VariableHtmlBox extends HtmlBox implements VariableBased, InputChan
 
     public VariableHtmlBox(BaseVariableHtmlBoxBuilder<?> builder) {
         super(builder);
-        htmlTemplate = builder.htmlTemplate;
-
-        this.parameters = new HashMap<>();
-
-        if (!Strings.isNullOrEmpty(this.htmlTemplate)) {
-            identifiers = Interpolator.extractVariableIdentifiers(this.htmlTemplate);
-            if (identifiers.isEmpty()) {
-                this.htmlContent = this.htmlTemplate;
-                this.setInformation(this.htmlContent);
-            }
+        htmlTemplate = new HtmlTemplate(builder.htmlTemplate);
+        if (!htmlTemplate.dependsOnVariables()) {
+            this.setInformation(builder.htmlTemplate);
         }
     }
 
@@ -87,21 +72,7 @@ public class VariableHtmlBox extends HtmlBox implements VariableBased, InputChan
 
     @Override
     public List<Variable<?>> connectWithSystemVariables(Map<String, Variable<?>> systemVariables) {
-        List<Variable<?>> connected = new ArrayList<>();
-
-        for (String identifier : identifiers) {
-            if ((systemVariables != null) && systemVariables.containsKey(identifier)) {
-                Variable<?> variable = systemVariables.get(identifier);
-                this.parameters.put(identifier, variable);
-                connected.add(variable);
-                variable.addListener(this);
-            }
-        }
-
-        if (!connected.isEmpty()) {
-            htmlChunks = Interpolator.decompose(this.htmlTemplate, this.parameters);
-        }
-        return connected;
+        return htmlTemplate.connectWithSystemVariables(systemVariables);
     }
 
     // ---------------------------------------------------------------------------
@@ -110,9 +81,9 @@ public class VariableHtmlBox extends HtmlBox implements VariableBased, InputChan
 
     @Override
     public void inputChanged(InputEvent input) {
-        if (parameters.containsKey(input.getSource().getName())) {
-            this.htmlContent = Interpolator.render(htmlChunks);
-            this.setInformation(this.htmlContent);
+        String identifier = input.getSource().getName();
+        if (htmlTemplate.dependsOn(identifier)) {
+            this.setInformation(htmlTemplate.render());
         }
     }
 
@@ -122,11 +93,7 @@ public class VariableHtmlBox extends HtmlBox implements VariableBased, InputChan
 
     @Override
     public List<Variable<?>> getDeclaredVariables() {
-        List<Variable<?>> declared = new ArrayList<>();
-        for (Variable<?> parameter : this.parameters.values()) {
-            declared.add(parameter);
-        }
-        return declared;
+        return htmlTemplate.getDeclaredVariables();
     }
 
     // ---------------------------------------------------------------------------