feat: change wording and add switch

Author: iobuhov

packages/pluggableWidgets/gallery-web/src/Gallery.tsx

@@ -102,7 +102,7 @@ function useCreateGalleryScope(props: GalleryContainerProps): GalleryRootScope {
         props.itemSelection,
         props.datasource,
         props.onSelectionChange,
-        "always keep"
+        props.keepSelection ? "always keep" : "always clear"
     );
     const itemSelectHelper = useItemSelectHelper(props.itemSelection, selectionHelper);
 

packages/pluggableWidgets/gallery-web/src/Gallery.xml

@@ -191,12 +191,12 @@
                     <description>Assistive technology will read this upon reaching each gallery item.</description>
                 </property>
                 <property key="sCountFmtSingular" type="textTemplate" required="false">
-                    <caption>Row count singular</caption>
-                    <description>Must include '%d' to denote number position ('%d row selected')</description>
+                    <caption>Item count singular</caption>
+                    <description>Must include '%d' to denote number position ('%d item selected')</description>
                 </property>
                 <property key="sCountFmtPlural" type="textTemplate" required="false">
-                    <caption>Row count plural</caption>
-                    <description>Must include '%d' to denote number position ('%d rows selected')</description>
+                    <caption>Item count plural</caption>
+                    <description>Must include '%d' to denote number position ('%d items selected')</description>
                 </property>
             </propertyGroup>
         </propertyGroup>

packages/pluggableWidgets/gallery-web/src/stores/GalleryStore.ts

@@ -74,7 +74,10 @@ export class GalleryStore extends BaseControllerHost {
             showTotalCount: spec.showTotalCount
         });
 
-        this.selectionCountStore = new SelectionCountStore(spec.gate);
+        this.selectionCountStore = new SelectionCountStore(spec.gate, {
+            singular: "%d item selected",
+            plural: "%d items selected"
+        });
 
         this._filtersHost = new CustomFilterHost();
 

packages/shared/widget-plugin-grid/src/selection/stores/SelectionCountStore.ts

@@ -10,8 +10,12 @@ type Gate = DerivedPropsGate<{
 
 export class SelectionCountStore {
     private gate: Gate;
+    private singular: string = "%d row selected";
+    private plural: string = "%d rows selected";
 
-    constructor(gate: Gate) {
+    constructor(gate: Gate, spec: { singular?: string; plural?: string } = {}) {
+        this.singular = spec.singular ?? this.singular;
+        this.plural = spec.plural ?? this.plural;
         this.gate = gate;
 
         makeObservable(this, {
@@ -23,11 +27,11 @@ export class SelectionCountStore {
     }
 
     get fmtSingular(): string {
-        return this.gate.props.sCountFmtSingular?.value || "%d row selected";
+        return this.gate.props.sCountFmtSingular?.value || this.singular;
     }
 
     get fmtPlural(): string {
-        return this.gate.props.sCountFmtPlural?.value || "%d rows selected";
+        return this.gate.props.sCountFmtPlural?.value || this.plural;
     }
 
     get selectedCount(): number {