Fix for pnp#65

Author: estruyf

CHANGELOG.md

@@ -6,6 +6,10 @@
 
 - `TaxonomyPicker` control got added [#22](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/22) [#63](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/63) [#64](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/64)
 
+**Fixes**
+
+- Issue fixed when the optional `selection` property was not provided to the `ListView` [#65](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/65)
+
 ## 1.2.5
 
 **Fixes**

docs/documentation/docs/about/release-notes.md

@@ -6,6 +6,10 @@
 
 - `TaxonomyPicker` control got added [#22](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/22) [#63](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/63) [#64](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/64)
 
+**Fixes**
+
+- Issue fixed when the optional `selection` property was not provided to the `ListView` [#65](https://github.com/SharePoint/sp-dev-fx-controls-react/issues/65)
+
 ## 1.2.5
 
 **Fixes**

src/controls/listView/ListView.tsx

@@ -60,7 +60,9 @@ export class ListView extends React.Component<IListViewProps, IListViewState> {
 
     if (!isEqual(prevProps, this.props)) {
       // Reset the selected items
-      this._selection.setItems(this.props.items, true);
+      if (this._selection) {
+        this._selection.setItems(this.props.items, true);
+      }
       // Process list view properties
       this._processProperties();
     }
@@ -353,15 +355,17 @@ export class ListView extends React.Component<IListViewProps, IListViewState> {
     const sortedItems = descending ? ascItems.reverse() : ascItems;
 
     // Check if selection needs to be updated
-    const selection = this._selection.getSelection();
-    if (selection && selection.length > 0) {
-      // Clear selection
-      this._selection.setItems([], true);
-      setTimeout(() => {
-        // Find new index
-        let idxs: number[] = selection.map(item => findIndex(sortedItems, item));
-        idxs.forEach(idx => this._selection.setIndexSelected(idx, true, false));
-      }, 0);
+    if (this._selection) {
+      const selection = this._selection.getSelection();
+      if (selection && selection.length > 0) {
+        // Clear selection
+        this._selection.setItems([], true);
+        setTimeout(() => {
+          // Find new index
+          let idxs: number[] = selection.map(item => findIndex(sortedItems, item));
+          idxs.forEach(idx => this._selection.setIndexSelected(idx, true, false));
+        }, 0);
+      }
     }
 
     // Return the sorted items list