Added support for default values in parameter select (#200)

Author: nielsdejong

src/chart/ParameterSelectionChart.tsx

@@ -50,7 +50,7 @@ const NeoParameterSelectionChart = (props: ChartProps) => {
     // In case the components gets (re)loaded with a different/non-existing selected parameter, set the text to the current global parameter value.
     if (query && value != currentValue && currentValue != inputText) {
         setValue(currentValue);
-        setInputText(currentValue);
+        setInputText(value == defaultValue ? "" : currentValue);
         setExtraRecords([]);
     }
 
@@ -63,23 +63,22 @@ const NeoParameterSelectionChart = (props: ChartProps) => {
     const settings = (props.settings) ? props.settings : {};
     const helperText = settings.helperText;
     const clearParameterOnFieldClear = settings.clearParameterOnFieldClear;
-
-
+    const defaultValue = props.settings && props.settings["defaultValue"] && props.settings["defaultValue"].length > 0 ? props.settings["defaultValue"] : "";
     return <div>
         {type == "Free Text" ?
             <div style={{ width: "100%" }}>
                 <NeoField
                     key={"freetext"}
                     label={helperText ? helperText : label + " " + property}
-                    defaultValue={""}
+                    defaultValue={defaultValue}
                     value={value}
                     variant="outlined"
                     placeholder={"Enter text here..."}
                     style={{ maxWidth: "calc(100% - 30px)", marginLeft: "15px", marginTop: "5px", width: "calc(100% - 80px)" }}
                     onChange={(newValue) => {
                         // TODO: i want this to be a proper wait instead of triggering on the first character.
                         if (newValue == null && clearParameterOnFieldClear) {
-                            setValue("");
+                            setValue(defaultValue);
                         } else {
                             setValue(newValue);
                         }
@@ -108,6 +107,8 @@ const NeoParameterSelectionChart = (props: ChartProps) => {
                     }
                     if (newValue == null && clearParameterOnFieldClear) {
                         props.setGlobalParameter(parameter, undefined);
+                    } else if (newValue == null) {
+                        props.setGlobalParameter(parameter, defaultValue);
                     } else {
                         props.setGlobalParameter(parameter, newValue);
                     }

src/config/ReportConfig.tsx

@@ -1257,6 +1257,11 @@ export const REPORT_TYPES = {
                 values: [true, false],
                 default: true
             },
+            "defaultValue": {
+                label: "Default Value (Override)",
+                type: SELECTION_TYPES.TEXT,
+                default: ""
+            },
             "clearParameterOnFieldClear": {
                 label: "Clear Parameter on Field Reset",
                 type: SELECTION_TYPES.LIST,