Added focus for searchbar in history sidebar & bookmark sidebar

Summary:
After Adding Focus , user can directly search after pressing ctrl+h in history sidebar
& ctrl+shift+b in bookmark sidebar
BUG: 393948

Reviewers: #falkon, drosca

Reviewed By: #falkon, drosca

Subscribers: SGOrava, falkon, #falkon

Tags: #falkon

Differential Revision: https://phabricator.kde.org/D20022

src/lib/sidebar/bookmarkssidebar.cpp

@@ -134,3 +134,9 @@ void BookmarksSidebar::createContextMenu(const QPoint &pos)
 
     menu.exec(pos);
 }
+
+void BookmarksSidebar::showEvent(QShowEvent *event)
+{
+    QWidget::showEvent(event);
+    ui->search->setFocus();
+}

src/lib/sidebar/bookmarkssidebar.h

@@ -53,6 +53,8 @@ private Q_SLOTS:
     void createContextMenu(const QPoint &pos);
 
 private:
+    void showEvent(QShowEvent *event) override;
+
     Ui::BookmarksSideBar* ui;
     BrowserWindow* m_window;
     Bookmarks* m_bookmarks;

src/lib/sidebar/historysidebar.cpp

@@ -103,6 +103,12 @@ void HistorySideBar::createContextMenu(const QPoint &pos)
     menu.exec(pos);
 }
 
+void HistorySideBar::showEvent(QShowEvent *event)
+{
+    QWidget::showEvent(event);
+    ui->search->setFocus();
+}
+
 HistorySideBar::~HistorySideBar()
 {
     delete ui;

src/lib/sidebar/historysidebar.h

@@ -51,6 +51,8 @@ private Q_SLOTS:
     void createContextMenu(const QPoint &pos);
 
 private:
+    void showEvent(QShowEvent *event) override;
+
     Ui::HistorySideBar* ui;
     BrowserWindow* m_window;
 };