fix(tabs): sync the sidebar selection with the tab actually switched to

qml/main.qml

@@ -64,19 +64,25 @@ FishUI.Window {
         var page = tabs[index]
         var remaining = tabs.slice()
         remaining.splice(index, 1)
-        currentTab = Math.max(0, currentTab - (index <= currentTab ? 1 : 0))
+        // The list has to shrink before the index moves, or the sync that
+        // follows the index change still sees the tab being closed.
         tabs = remaining
+        currentTab = Math.max(0, currentTab - (index <= currentTab ? 1 : 0))
         page.destroy()
         syncNavigation()
     }
 
     function syncNavigation() {
-        if (!_folderPage)
+        // Not _folderPage: its binding on currentTab has not been re-evaluated
+        // yet when this runs from onCurrentTabChanged, so it still holds the
+        // tab we are leaving.
+        var page = tabs.length ? tabs[currentTab] : null
+        if (!page)
             return
         _pathBar.closeEditor()
-        _sideBar.updateSelection(_folderPage.currentUrl)
-        _pathBar.updateUrl(_folderPage.currentUrl)
-        _folderPage.focusView()
+        _sideBar.updateSelection(page.currentUrl)
+        _pathBar.updateUrl(page.currentUrl)
+        page.focusView()
     }
 
     function moveTab(from, to) {
@@ -277,6 +283,7 @@ FishUI.Window {
 
         SideBar {
             id: _sideBar
+            objectName: "sideBar"
             Layout.fillHeight: true
             title: root.title
             onClicked: _folderPage.openUrl(path)

tests/tst_tabs.cpp

@@ -32,6 +32,8 @@ private slots:
         QObject *window = engine.rootObjects().first();
         QObject *menuBar = window->findChild<QObject *>("applicationMenuBar");
         QVERIFY(menuBar);
+        QObject *sideBar = window->findChild<QObject *>("sideBar");
+        QVERIFY(sideBar);
         QSignalSpy menuWindowChanges(menuBar, SIGNAL(windowChanged()));
         QVERIFY(menuWindowChanges.isValid());
         auto evaluate = [&](const QString &code) {
@@ -79,6 +81,8 @@ private slots:
 
         window->setProperty("currentTab", 0);
         QCOMPARE(activePage(), firstPage);
+        // Switching tabs has to move the sidebar selection with it.
+        QCOMPARE(sideBar->property("selectedPath").toString(), firstUrl);
         QCOMPARE(firstModel->url(), firstUrl);
         QVERIFY(firstModel->canGoBack());
         firstModel->goBack();
@@ -109,6 +113,7 @@ private slots:
         QTRY_COMPARE(evaluate("tabs.length").toInt(), 2);
         QTest::keyClick(quickWindow, Qt::Key_Tab, Qt::ControlModifier);
         QTRY_COMPARE(window->property("currentTab").toInt(), 0);
+        QCOMPARE(sideBar->property("selectedPath").toString(), initialUrl);
         QTest::keyClick(quickWindow, Qt::Key_W, Qt::ControlModifier);
         QTRY_COMPARE(evaluate("tabs.length").toInt(), 1);