refactor: do not handle clients events if dashboard is not editable

vaadin-dashboard-flow-parent/vaadin-dashboard-flow/src/main/java/com/vaadin/flow/component/dashboard/Dashboard.java

@@ -479,6 +479,9 @@ void removeChild(Component child) {
 
     private void onItemReorderEnd(
             DashboardItemReorderEndEvent dashboardItemReorderEndEvent) {
+        if (!isEditable()) {
+            return;
+        }
         JsonArray orderedItemsFromClient = dashboardItemReorderEndEvent
                 .getItems();
         reorderItems(orderedItemsFromClient);
@@ -487,6 +490,9 @@ private void onItemReorderEnd(
 
     private void onItemResizeEnd(
             DashboardItemResizeEndEvent dashboardItemResizeEndEvent) {
+        if (!isEditable()) {
+            return;
+        }
         DashboardWidget resizedWidget = dashboardItemResizeEndEvent
                 .getResizedWidget();
         resizedWidget.setRowspan(dashboardItemResizeEndEvent.getRowspan());
@@ -495,6 +501,9 @@ private void onItemResizeEnd(
 
     private void onItemRemoved(
             DashboardItemRemovedEvent dashboardItemRemovedEvent) {
+        if (!isEditable()) {
+            return;
+        }
         dashboardItemRemovedEvent.getRemovedItem().removeFromParent();
     }
 

vaadin-dashboard-flow-parent/vaadin-dashboard-flow/src/test/java/com/vaadin/flow/component/dashboard/tests/DashboardDragReorderTest.java

@@ -37,6 +37,7 @@ public void setup() {
         super.setup();
         dashboard = new Dashboard();
         dashboard.add(new DashboardWidget(), new DashboardWidget());
+        dashboard.setEditable(true);
         DashboardSection section = dashboard.addSection();
         section.add(new DashboardWidget(), new DashboardWidget());
         getUi().add(dashboard);
@@ -59,6 +60,15 @@ public void reorderWidgetInSection_orderIsUpdated() {
         assertSectionWidgetReorder(2, 0, 1);
     }
 
+    @Test
+    public void setDashboardNotEditable_reorderWidget_orderIsNotUpdated() {
+        dashboard.setEditable(false);
+        List<Integer> expectedRootLevelNodeIds = getRootLevelNodeIds();
+        reorderRootLevelItem(0, 1);
+        fireItemReorderEndEvent();
+        Assert.assertEquals(expectedRootLevelNodeIds, getRootLevelNodeIds());
+    }
+
     private void fireItemReorderEndEvent() {
         ComponentUtil.fireEvent(dashboard,
                 new DashboardItemReorderEndEvent(dashboard, false, itemsArray));

vaadin-dashboard-flow-parent/vaadin-dashboard-flow/src/test/java/com/vaadin/flow/component/dashboard/tests/DashboardDragResizeTest.java

@@ -27,6 +27,7 @@ public void setup() {
         super.setup();
         dashboard = new Dashboard();
         dashboard.add(new DashboardWidget());
+        dashboard.setEditable(true);
         DashboardSection section = dashboard.addSection();
         section.add(new DashboardWidget());
         getUi().add(dashboard);
@@ -63,6 +64,15 @@ public void resizeWidgetInSectionBothHorizontallyAndVertically_sizeIsUpdated() {
         assertWidgetResized(1, 2, 2);
     }
 
+    @Test
+    public void setDashboardNotEditable_resizeWidget_sizeIsNotUpdated() {
+        dashboard.setEditable(false);
+        DashboardWidget widgetToResize = dashboard.getWidgets().get(0);
+        fireItemResizeEndEvent(widgetToResize, 2, 2);
+        Assert.assertEquals(1, widgetToResize.getColspan());
+        Assert.assertEquals(1, widgetToResize.getRowspan());
+    }
+
     private void assertWidgetResized(int widgetIndexToResize, int targetColspan,
             int targetRowspan) {
         DashboardWidget widgetToResize = dashboard.getWidgets()

vaadin-dashboard-flow-parent/vaadin-dashboard-flow/src/test/java/com/vaadin/flow/component/dashboard/tests/DashboardTest.java

@@ -8,11 +8,16 @@
  */
 package com.vaadin.flow.component.dashboard.tests;
 
+import java.util.Set;
+import java.util.stream.Collectors;
+
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
+import com.vaadin.flow.component.ComponentUtil;
 import com.vaadin.flow.component.dashboard.Dashboard;
+import com.vaadin.flow.component.dashboard.DashboardItemRemovedEvent;
 import com.vaadin.flow.component.dashboard.DashboardSection;
 import com.vaadin.flow.component.dashboard.DashboardWidget;
 import com.vaadin.flow.component.html.Div;
@@ -815,4 +820,40 @@ public void detachDashboard_addWidget_reattachDashboard_widgetIsAdded() {
         fakeClientCommunication();
         assertChildComponents(dashboard, widget);
     }
+
+    @Test
+    public void dashboardNotEditable_removeWidget_widgetIsNotRemoved() {
+        DashboardWidget widgetToRemove = new DashboardWidget();
+        dashboard.add(widgetToRemove);
+        fakeClientCommunication();
+        int expectedWidgetCount = dashboard.getWidgets().size();
+        int expectedNodeId = widgetToRemove.getElement().getNode().getId();
+        fireItemRemovedEvent(expectedNodeId);
+        Assert.assertEquals(expectedWidgetCount, dashboard.getWidgets().size());
+        Set<Integer> actualNodeIds = dashboard.getWidgets().stream()
+                .map(widget -> widget.getElement().getNode().getId())
+                .collect(Collectors.toSet());
+        Assert.assertTrue(actualNodeIds.contains(expectedNodeId));
+    }
+
+    @Test
+    public void setDashboardEditable_removeWidget_widgetIsRemoved() {
+        DashboardWidget widgetToRemove = new DashboardWidget();
+        dashboard.add(widgetToRemove);
+        dashboard.setEditable(true);
+        fakeClientCommunication();
+        int expectedWidgetCount = dashboard.getWidgets().size() - 1;
+        int nodeIdToBeRemoved = widgetToRemove.getElement().getNode().getId();
+        fireItemRemovedEvent(nodeIdToBeRemoved);
+        Assert.assertEquals(expectedWidgetCount, dashboard.getWidgets().size());
+        Set<Integer> actualNodeIds = dashboard.getWidgets().stream()
+                .map(widget -> widget.getElement().getNode().getId())
+                .collect(Collectors.toSet());
+        Assert.assertFalse(actualNodeIds.contains(nodeIdToBeRemoved));
+    }
+
+    private void fireItemRemovedEvent(int nodeId) {
+        ComponentUtil.fireEvent(dashboard,
+                new DashboardItemRemovedEvent(dashboard, false, nodeId));
+    }
 }