Adress most of the second round of Angelaccio's review comments

This commit applies most suggestions which were made on the MR.
Most notably the DolphinUrlNavigator class is split up which leads to
the creation of a DolphinUrlNavigatorsController class.

Additionally some minor coding style and const correctness changes are
included.

The error value of cached integers is changed from -1 to INT_MIN
because situations could come up in which -1 would be a valid value.

1 files changed, 14 insertions, 13 deletions

diff --git a/src/dolphinmainwindow.cpp b/src/dolphinmainwindow.cpp
index e3435685f..0c4c3c881 100644
--- a/src/dolphinmainwindow.cpp
+++ b/src/dolphinmainwindow.cpp
@@ -14,8 +14,10 @@
 #include "dolphinbookmarkhandler.h"
 #include "dolphindockwidget.h"
 #include "dolphincontextmenu.h"
+#include "dolphinnavigatorswidgetaction.h"
 #include "dolphinnewfilemenu.h"
 #include "dolphinrecenttabsmenu.h"
+#include "dolphinurlnavigatorscontroller.h"
 #include "dolphinviewcontainer.h"
 #include "dolphintabpage.h"
 #include "middleclickactioneventfilter.h"
@@ -31,7 +33,6 @@
 #include "views/draganddrophelper.h"
 #include "views/viewproperties.h"
 #include "views/dolphinnewfilemenuobserver.h"
-#include "dolphinnavigatorswidgetaction.h"
 #include "dolphin_generalsettings.h"
 
 #include <KActionCollection>
@@ -106,8 +107,7 @@ DolphinMainWindow::DolphinMainWindow() :
     m_placesPanel(nullptr),
     m_tearDownFromPlacesRequested(false),
     m_backAction(nullptr),
-    m_forwardAction(nullptr),
-    m_updateHistoryConnection{}
+    m_forwardAction(nullptr)
 {
     Q_INIT_RESOURCE(dolphin);
 
@@ -210,7 +210,7 @@ DolphinMainWindow::~DolphinMainWindow()
 {
 }
 
-QVector<DolphinViewContainer *> DolphinMainWindow::viewContainers() const
+QVector<DolphinViewContainer*> DolphinMainWindow::viewContainers() const
 {
     QVector<DolphinViewContainer*> viewContainers;
 
@@ -927,14 +927,14 @@ void DolphinMainWindow::goHome()
 
 void DolphinMainWindow::goBackInNewTab()
 {
-    KUrlNavigator* urlNavigator = activeViewContainer()->urlNavigatorInternalWithHistory();
+    const KUrlNavigator* urlNavigator = activeViewContainer()->urlNavigatorInternalWithHistory();
     const int index = urlNavigator->historyIndex() + 1;
     openNewTabAfterCurrentTab(urlNavigator->locationUrl(index));
 }
 
 void DolphinMainWindow::goForwardInNewTab()
 {
-    KUrlNavigator* urlNavigator = activeViewContainer()->urlNavigatorInternalWithHistory();
+    const KUrlNavigator* urlNavigator = activeViewContainer()->urlNavigatorInternalWithHistory();
     const int index = urlNavigator->historyIndex() - 1;
     openNewTabAfterCurrentTab(urlNavigator->locationUrl(index));
 }
@@ -1066,7 +1066,8 @@ void DolphinMainWindow::editSettings()
         const QUrl url = container->url();
         DolphinSettingsDialog* settingsDialog = new DolphinSettingsDialog(url, this);
         connect(settingsDialog, &DolphinSettingsDialog::settingsChanged, this, &DolphinMainWindow::refreshViews);
-        connect(settingsDialog, &DolphinSettingsDialog::settingsChanged, &DolphinUrlNavigator::slotReadSettings);
+        connect(settingsDialog, &DolphinSettingsDialog::settingsChanged,
+                &DolphinUrlNavigatorsController::slotReadSettings);
         settingsDialog->setAttribute(Qt::WA_DeleteOnClose);
         settingsDialog->show();
         m_settingsDialog = settingsDialog;
@@ -1898,14 +1899,14 @@ void DolphinMainWindow::setupDockWidgets()
     connect(this, &DolphinMainWindow::urlChanged,
             m_placesPanel, &PlacesPanel::setUrl);
     connect(placesDock, &DolphinDockWidget::visibilityChanged,
-            &DolphinUrlNavigator::slotPlacesPanelVisibilityChanged);
+            &DolphinUrlNavigatorsController::slotPlacesPanelVisibilityChanged);
     connect(this, &DolphinMainWindow::settingsChanged,
         m_placesPanel, &PlacesPanel::readSettings);
     connect(m_placesPanel, &PlacesPanel::storageTearDownRequested,
             this, &DolphinMainWindow::slotStorageTearDownFromPlacesRequested);
     connect(m_placesPanel, &PlacesPanel::storageTearDownExternallyRequested,
             this, &DolphinMainWindow::slotStorageTearDownExternallyRequested);
-    DolphinUrlNavigator::slotPlacesPanelVisibilityChanged(m_placesPanel->isVisible());
+    DolphinUrlNavigatorsController::slotPlacesPanelVisibilityChanged(m_placesPanel->isVisible());
 
     auto actionShowAllPlaces = new QAction(QIcon::fromTheme(QStringLiteral("view-hidden")), i18nc("@item:inmenu", "Show Hidden Places"), this);
     actionShowAllPlaces->setCheckable(true);
@@ -2176,13 +2177,13 @@ void DolphinMainWindow::connectViewSignals(DolphinViewContainer* container)
     auto navigators = static_cast<DolphinNavigatorsWidgetAction *>
         (actionCollection()->action(QStringLiteral("url_navigators")));
 
-    KUrlNavigator *navigator = m_tabWidget->currentTabPage()->primaryViewActive() ?
-                               navigators->primaryUrlNavigator() :
-                               navigators->secondaryUrlNavigator();
+    const KUrlNavigator *navigator = m_tabWidget->currentTabPage()->primaryViewActive() ?
+                                     navigators->primaryUrlNavigator() :
+                                     navigators->secondaryUrlNavigator();
 
     connect(navigator, &KUrlNavigator::urlChanged,
             this, &DolphinMainWindow::changeUrl);
-    QAction* editableLocactionAction = actionCollection()->action(QStringLiteral("editable_location"));
+    QAction *editableLocactionAction = actionCollection()->action(QStringLiteral("editable_location"));
     editableLocactionAction->setChecked(navigator->isUrlEditable());
     connect(navigator, &KUrlNavigator::editableStateChanged,
             this, &DolphinMainWindow::slotEditableStateChanged);