From f32b61addf3a9c15a830aadc9774b90831699ae6 Mon Sep 17 00:00:00 2001
From: Miki <miki@beanbakers.fi>
Date: Thu, 29 Aug 2024 18:01:43 +0300
Subject: [PATCH] #518 done (#520)

---
 .../miki/demo/builders/SuperTabsBuilder.java    |  5 ++++-
 .../vaadin/miki/superfields/tabs/SuperTabs.java | 15 +++++++++++++++
 .../miki/superfields/tabs/SuperTabsTest.java    | 17 +++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/demo-v24/src/main/java/org/vaadin/miki/demo/builders/SuperTabsBuilder.java b/demo-v24/src/main/java/org/vaadin/miki/demo/builders/SuperTabsBuilder.java
index 9658f942..7a21b64b 100644
--- a/demo-v24/src/main/java/org/vaadin/miki/demo/builders/SuperTabsBuilder.java
+++ b/demo-v24/src/main/java/org/vaadin/miki/demo/builders/SuperTabsBuilder.java
@@ -1,6 +1,7 @@
 package org.vaadin.miki.demo.builders;
 
 import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.checkbox.Checkbox;
 import com.vaadin.flow.component.combobox.ComboBox;
 import org.vaadin.miki.demo.ContentBuilder;
@@ -30,6 +31,8 @@ public void buildContent(SuperTabs<?> component, Consumer<Component[]> callback)
                 component.setTabHandler(event.getValue());
         });
 
-        callback.accept(new Component[]{multilineTabs, tabHandlers});
+        @SuppressWarnings("unchecked")
+        final Button tabSelect = new Button("Switch to \"Open source\" tab with .setSelected()", event ->  ((SuperTabs<String>)component).getTabHeader("Open source").ifPresent(tab -> tab.setSelected(true)));
+        callback.accept(new Component[]{multilineTabs, tabHandlers, tabSelect});
     }
 }
diff --git a/superfields/src/main/java/org/vaadin/miki/superfields/tabs/SuperTabs.java b/superfields/src/main/java/org/vaadin/miki/superfields/tabs/SuperTabs.java
index 87672fc6..fa0346c5 100644
--- a/superfields/src/main/java/org/vaadin/miki/superfields/tabs/SuperTabs.java
+++ b/superfields/src/main/java/org/vaadin/miki/superfields/tabs/SuperTabs.java
@@ -12,6 +12,7 @@
 import com.vaadin.flow.component.html.Span;
 import com.vaadin.flow.component.tabs.Tab;
 import com.vaadin.flow.component.tabs.Tabs;
+import com.vaadin.flow.dom.PropertyChangeEvent;
 import org.vaadin.miki.markers.WithHelperMixin;
 import org.vaadin.miki.markers.WithHelperPositionableMixin;
 import org.vaadin.miki.markers.WithIdMixin;
@@ -207,6 +208,20 @@ protected void addNewTab(T value, Tab tab, Component content, boolean select) {
             else
                 this.updateValue();
         }
+        tab.getElement().addPropertyChangeListener("selected", this::tabSelectedPropertyChanged);
+    }
+
+    private void tabSelectedPropertyChanged(PropertyChangeEvent propertyChangeEvent) {
+        if(propertyChangeEvent.getPropertyName().equals("selected") &&
+           (propertyChangeEvent.getOldValue() == null || !Boolean.parseBoolean(propertyChangeEvent.getOldValue().toString())) &&
+            propertyChangeEvent.getValue() != null &&
+            Boolean.parseBoolean(propertyChangeEvent.getValue().toString())) {
+        this.tabsToContents.entrySet().stream()
+            .filter(entry -> Objects.equals(entry.getKey().getElement(), propertyChangeEvent.getSource()))
+            .findFirst()
+            .map(Map.Entry::getKey)
+            .ifPresent(this.tabs::setSelectedTab);
+        }
     }
 
     /**
diff --git a/superfields/src/test/java/org/vaadin/miki/superfields/tabs/SuperTabsTest.java b/superfields/src/test/java/org/vaadin/miki/superfields/tabs/SuperTabsTest.java
index 4b19f07e..bb3cabdd 100644
--- a/superfields/src/test/java/org/vaadin/miki/superfields/tabs/SuperTabsTest.java
+++ b/superfields/src/test/java/org/vaadin/miki/superfields/tabs/SuperTabsTest.java
@@ -13,6 +13,7 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 public class SuperTabsTest {
 
@@ -243,4 +244,20 @@ public void testChangingTabHandler() {
         }
     }
 
+    @Test
+    public void testTabSetSelected() {
+        final String tabTitle = "foo";
+        this.tabs.addTab("something", "anything", tabTitle, "another thing");
+        Assert.assertNotEquals(tabTitle, this.tabs.getValue());
+        final Optional<Tab> perhapsHeader = this.tabs.getTabHeader(tabTitle);
+        Assert.assertTrue(perhapsHeader.isPresent());
+        final Tab tab = perhapsHeader.get();
+        tab.setSelected(true);
+        Assert.assertEquals(tabTitle, this.tabs.getValue());
+
+        final Tab notThere = new Tab("oh wow");
+        notThere.setSelected(true);
+        Assert.assertEquals(tabTitle, this.tabs.getValue());
+    }
+
 }
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