TabContextMenu: Add Unload Tab action

Closes #2563

src/lib/tabwidget/tabcontextmenu.cpp

@@ -44,6 +44,7 @@ TabContextMenu::TabContextMenu(int index, Qt::Orientation orientation, BrowserWi
     connect(this, SIGNAL(closeToRight(int)), m_tabWidget, SLOT(closeToRight(int)));
     connect(this, SIGNAL(closeToLeft(int)), m_tabWidget, SLOT(closeToLeft(int)));
     connect(this, SIGNAL(duplicateTab(int)), m_tabWidget, SLOT(duplicateTab(int)));
+    connect(this, SIGNAL(unloadTab(int)), m_tabWidget, SLOT(unloadTab(int)));
 
     init();
 }
@@ -121,6 +122,11 @@ void TabContextMenu::init()
 
         addAction(webTab->isPinned() ? tr("Un&pin Tab") : tr("&Pin Tab"), this, SLOT(pinTab()));
         addAction(webTab->isMuted() ? tr("Un&mute Tab") : tr("&Mute Tab"), this, SLOT(muteTab()));
+
+        if (webTab->isRestored()) {
+            addAction(tr("Unload Tab"), this, SLOT(unloadTab()));
+        }
+
         addSeparator();
         addAction(tr("Re&load All Tabs"), m_tabWidget, SLOT(reloadAllTabs()));
         addAction(tr("Bookmark &All Tabs"), m_window, SLOT(bookmarkAllTabs()));

src/lib/tabwidget/tabcontextmenu.h

@@ -39,12 +39,14 @@ signals:
     void closeToRight(int index);
     void closeToLeft(int index);
     void duplicateTab(int index);
+    void unloadTab(int index);
 
 private slots:
     void reloadTab() { emit reloadTab(m_clickedTab); }
     void stopTab() { emit stopTab(m_clickedTab); }
     void closeTab() { emit tabCloseRequested(m_clickedTab); }
     void duplicateTab() { emit duplicateTab(m_clickedTab); }
+    void unloadTab() { emit unloadTab(m_clickedTab); }
 
     void pinTab();
     void muteTab();

src/lib/tabwidget/tabwidget.cpp

@@ -672,6 +672,15 @@ int TabWidget::duplicateTab(int index)
     return id;
 }
 
+void TabWidget::unloadTab(int index)
+{
+    if (!validIndex(index)) {
+        return;
+    }
+
+    weTab(index)->unload();
+}
+
 void TabWidget::restoreClosedTab(QObject* obj)
 {
     if (!obj) {

src/lib/tabwidget/tabwidget.h

@@ -116,6 +116,7 @@ public slots:
     void closeToRight(int index);
     void closeToLeft(int index);
     void detachTab(int index);
+    void unloadTab(int index);
     void restoreClosedTab(QObject* obj = 0);
     void restoreAllClosedTabs();
     void clearClosedTabsList();

src/lib/webtab/webtab.cpp

@@ -311,14 +311,21 @@ QByteArray WebTab::historyData() const
     }
 }
 
+void WebTab::stop()
+{
+    m_webView->stop();
+}
+
 void WebTab::reload()
 {
     m_webView->reload();
 }
 
-void WebTab::stop()
+void WebTab::unload()
 {
-    m_webView->stop();
+    m_savedTab = SavedTab(this);
+    m_webView->history()->clear();
+    m_webView->setUrl(QUrl(QSL("about:blank")));
 }
 
 bool WebTab::isLoading() const
@@ -426,6 +433,10 @@ void WebTab::showNotification(QWidget* notif)
 
 void WebTab::loadStarted()
 {
+    if (!isRestored()) {
+        return;
+    }
+
     if (m_tabBar && m_webView->title(/*allowEmpty*/true).isEmpty()) {
         m_tabBar->setTabText(tabIndex(), tr("Loading..."));
     }
@@ -433,12 +444,16 @@ void WebTab::loadStarted()
 
 void WebTab::loadFinished()
 {
+    if (isRestored()) {
         titleChanged(m_webView->title());
+    } else if (m_webView->url().toString() == QL1S("about:blank")) {
+        m_webView->history()->clear();
+    }
 }
 
 void WebTab::titleChanged(const QString &title)
 {
-    if (!m_tabBar || !m_window || title.isEmpty()) {
+    if (!m_tabBar || !m_window || title.isEmpty() || !isRestored()) {
         return;
     }
 
@@ -449,25 +464,19 @@ void WebTab::titleChanged(const QString &title)
     m_tabBar->setTabText(tabIndex(), title);
 }
 
-void WebTab::slotRestore()
-{
-    Q_ASSERT(m_tabBar);
-
-    if (isRestored()) {
-        return;
-    }
-
-    p_restoreTab(m_savedTab);
-    m_savedTab.clear();
-}
-
 void WebTab::tabActivated()
 {
     if (isRestored()) {
         return;
     }
 
-    QTimer::singleShot(0, this, SLOT(slotRestore()));
+    QTimer::singleShot(0, this, [this]() {
+        if (isRestored()) {
+            return;
+        }
+        p_restoreTab(m_savedTab);
+        m_savedTab.clear();
+    });
 }
 
 void WebTab::resizeEvent(QResizeEvent *event)

src/lib/webtab/webtab.h

@@ -77,6 +77,7 @@ public:
 
     void stop();
     void reload();
+    void unload();
     bool isLoading() const;
 
     bool isPinned() const;
@@ -110,8 +111,6 @@ private slots:
     void loadFinished();
     void titleChanged(const QString &title);
 
-    void slotRestore();
-
 private:
     void resizeEvent(QResizeEvent *event) override;