Bugfixes in pager. Last item was not updated correctly.

src/Squidex/app/framework/utils/pager.spec.ts

@@ -117,6 +117,22 @@ describe('Pager', () => {
     });
 
     it('should update count when incrementing it', () => {
+        const pager_1 = new Pager(23, 1, 10);
+        const pager_2 = pager_1.incrementCount().incrementCount();
+
+        expect(Object.assign({}, pager_2)).toEqual({
+            page: 1,
+            pageSize: 10,
+            itemFirst: 11,
+            itemLast: 22,
+            skip: 10,
+            numberOfItems: 25,
+            canGoNext: true,
+            canGoPrev: true
+        });
+    });
+
+    it('should update count for last page when incrementing it', () => {
         const pager_1 = new Pager(23, 2, 10);
         const pager_2 = pager_1.incrementCount();
 
@@ -133,6 +149,22 @@ describe('Pager', () => {
     });
 
     it('should update count when decrementing it', () => {
+        const pager_1 = new Pager(23, 1, 10);
+        const pager_2 = pager_1.decrementCount().decrementCount();
+
+        expect(Object.assign({}, pager_2)).toEqual({
+            page: 1,
+            pageSize: 10,
+            itemFirst: 11,
+            itemLast: 18,
+            skip: 10,
+            numberOfItems: 21,
+            canGoNext: true,
+            canGoPrev: true
+        });
+    });
+
+    it('should update count for last page when decrementing it', () => {
         const pager_1 = new Pager(23, 2, 10);
         const pager_2 = pager_1.decrementCount();
 

src/Squidex/app/framework/utils/pager.ts

@@ -59,10 +59,22 @@ export class Pager {
     }
 
     public incrementCount(): Pager {
-        return new Pager(this.numberOfItems + 1, this.page, this.pageSize);
+        const result = new Pager(this.numberOfItems + 1, this.page, this.pageSize);
+
+        if (result.canGoNext) {
+            result.itemLast = this.itemLast + 1;
+        }
+
+        return result;
     }
 
     public decrementCount(): Pager {
-        return new Pager(this.numberOfItems - 1, this.page, this.pageSize);
+        const result = new Pager(this.numberOfItems - 1, this.page, this.pageSize);
+
+        if (result.canGoNext) {
+            result.itemLast = this.itemLast - 1;
+        }
+
+        return result;
     }
 }