Make UrlNavigators in the toolbar the only option

The UrlNavigators will be automatically added to the toolbar. The Sort By
action is removed from the default toolbar to make space.

Remove all options to have UrlNavigators outside the toolbar and remove
those code paths.

Make it so the new NavigatorsWidgetAction contains two UrlNavigators when
in split view mode. Spacing was also added to align these UrlNavigators
with the ViewContainers when enough space is available.

Force the toolbar to be either at the top or bottom of the window.

Set a sane sizeHint for DolphinUrlNavigator. It would be better to do this
in KUrlNavigator in the future.

This commit also contains a changes which should be moved to a separate
merge requests before this gets merged:
- Add an expansion animation when split view is enabled by the user

1 files changed, 24 insertions, 10 deletions

diff --git a/src/dolphintabwidget.cpp b/src/dolphintabwidget.cpp
index 3ce8229f9..a09a769d3 100644
--- a/src/dolphintabwidget.cpp
+++ b/src/dolphintabwidget.cpp
@@ -20,9 +20,10 @@
 #include <QApplication>
 #include <QDropEvent>
 
-DolphinTabWidget::DolphinTabWidget(QWidget* parent) :
+DolphinTabWidget::DolphinTabWidget(DolphinNavigatorsWidgetAction *navigatorsWidget, QWidget* parent) :
     QTabWidget(parent),
-    m_lastViewedTab(0)
+    m_lastViewedTab(nullptr),
+    m_navigatorsWidget{navigatorsWidget}
 {
     KAcceleratorManager::setNoAccel(this);
 
@@ -126,11 +127,19 @@ bool DolphinTabWidget::isUrlOpen(const QUrl &url) const
 
 void DolphinTabWidget::openNewActivatedTab()
 {
+    std::unique_ptr<DolphinUrlNavigator::VisualState> oldNavigatorState;
+    if (currentTabPage()->primaryViewActive()) {
+        oldNavigatorState = m_navigatorsWidget->primaryUrlNavigator()->visualState();
+    } else {
+        if (!m_navigatorsWidget->secondaryUrlNavigator()) {
+            m_navigatorsWidget->createSecondaryUrlNavigator();
+        }
+        oldNavigatorState = m_navigatorsWidget->secondaryUrlNavigator()->visualState();
+    }
+
     const DolphinViewContainer* oldActiveViewContainer = currentTabPage()->activeViewContainer();
     Q_ASSERT(oldActiveViewContainer);
 
-    const bool isUrlEditable = oldActiveViewContainer->urlNavigator()->isUrlEditable();
-
     openNewActivatedTab(oldActiveViewContainer->url());
 
     DolphinViewContainer* newActiveViewContainer = currentTabPage()->activeViewContainer();
@@ -138,7 +147,7 @@ void DolphinTabWidget::openNewActivatedTab()
 
     // The URL navigator of the new tab should have the same editable state
     // as the current tab
-    newActiveViewContainer->urlNavigator()->setUrlEditable(isUrlEditable);
+    newActiveViewContainer->urlNavigator()->setVisualState(*oldNavigatorState.get());
 
     // Always focus the new tab's view
     newActiveViewContainer->view()->setFocus();
@@ -384,16 +393,21 @@ void DolphinTabWidget::tabUrlChanged(const QUrl& url)
 
 void DolphinTabWidget::currentTabChanged(int index)
 {
-    // last-viewed tab deactivation
-    if (DolphinTabPage* tabPage = tabPageAt(m_lastViewedTab)) {
-        tabPage->setActive(false);
+    DolphinTabPage *tabPage = tabPageAt(index);
+    if (tabPage == m_lastViewedTab) {
+        return;
+    }
+    if (m_lastViewedTab) {
+        m_lastViewedTab->disconnectNavigators();
+        m_lastViewedTab->setActive(false);
     }
-    DolphinTabPage* tabPage = tabPageAt(index);
     DolphinViewContainer* viewContainer = tabPage->activeViewContainer();
     Q_EMIT activeViewChanged(viewContainer);
     Q_EMIT currentUrlChanged(viewContainer->url());
     tabPage->setActive(true);
-    m_lastViewedTab = index;
+    tabPage->connectNavigators(m_navigatorsWidget);
+    m_navigatorsWidget->setSecondaryNavigatorVisible(tabPage->splitViewEnabled());
+    m_lastViewedTab = tabPageAt(index);
 }
 
 void DolphinTabWidget::tabInserted(int index)