feat: add constructor overloads for dashboard widget (#6841)

Author: ugur-vaadin

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

@@ -39,6 +39,51 @@ public class DashboardWidget extends Component {
 
     private boolean featureFlagEnabled;
 
+    /**
+     * Creates an empty widget.
+     */
+    public DashboardWidget() {
+        this(null, null);
+    }
+
+    /**
+     * Creates a widget with the specified title.
+     *
+     * @param title
+     *            the title to set
+     */
+    public DashboardWidget(String title) {
+        this(title, null);
+    }
+
+    /**
+     * Creates a widget with the specified content.
+     *
+     * @param content
+     *            the content to set
+     */
+    public DashboardWidget(Component content) {
+        this(null, content);
+    }
+
+    /**
+     * Creates a widget with the specified title and content.
+     *
+     * @param title
+     *            the title to set
+     * @param content
+     *            the content to set
+     */
+    public DashboardWidget(String title, Component content) {
+        super();
+        if (title != null) {
+            setTitle(title);
+        }
+        if (content != null) {
+            setContent(content);
+        }
+    }
+
     /**
      * Returns the title of the widget.
      *

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

@@ -30,6 +30,15 @@ public void setTitle_returnsCorrectTitle() {
         Assert.assertEquals(valueToSet, widget.getTitle());
     }
 
+    @Test
+    public void setTitleInConstructor_returnsCorrectTitle() {
+        var valueToSet = "New title";
+        var widget = new DashboardWidget(valueToSet);
+        widget.setFeatureFlagEnabled(true);
+        widget.setTitle(valueToSet);
+        Assert.assertEquals(valueToSet, widget.getTitle());
+    }
+
     @Test
     public void setTitleNull_returnsEmptyTitle() {
         DashboardWidget widget = getNewWidget();
@@ -143,6 +152,24 @@ public void setContentToEmptyWidget_correctContentIsSet() {
         Assert.assertEquals(content, widget.getContent());
     }
 
+    @Test
+    public void setContentInConstructor_correctContentIsSet() {
+        var content = new Div();
+        var widget = new DashboardWidget(content);
+        widget.setFeatureFlagEnabled(true);
+        Assert.assertEquals(content, widget.getContent());
+    }
+
+    @Test
+    public void setTitleAndContentInConstructor_correctValuesAreSet() {
+        var title = "New title";
+        var content = new Div();
+        var widget = new DashboardWidget(title, content);
+        widget.setFeatureFlagEnabled(true);
+        Assert.assertEquals(title, widget.getTitle());
+        Assert.assertEquals(content, widget.getContent());
+    }
+
     @Test
     public void setAnotherContentToNonEmptyWidget_correctContentIsSet() {
         DashboardWidget widget = getNewWidget();