From 41b0e4297313b6549f9178c77c30101a42b0525f Mon Sep 17 00:00:00 2001
From: Emmanuel Pescosta <emmanuelpescosta099@gmail.com>
Date: Sat, 18 Feb 2017 20:34:02 +0100
Subject: Restore the view state after the URL of the DolphinView has been
 changed, as stated in the documentation of KUrlNavigator::saveLocationState.

The historyChanged signal of the KUrlNavigator is emitted before the urlChanged
signal and so the view state restoring happens before the view URL has been
changed. This makes it impossible to save and restore the selected URLs, because
DolphinView::setUrl clears the list of selected items (which has been restored
right before). This changes removes the history changed slot and restores the
view state after the setUrl call.
---
 src/dolphinviewcontainer.cpp | 50 +++++++++++++-------------------------------
 1 file changed, 14 insertions(+), 36 deletions(-)

(limited to 'src/dolphinviewcontainer.cpp')

diff --git a/src/dolphinviewcontainer.cpp b/src/dolphinviewcontainer.cpp
index 2ea5b7e00..72ced931b 100644
--- a/src/dolphinviewcontainer.cpp
+++ b/src/dolphinviewcontainer.cpp
@@ -122,8 +122,6 @@ DolphinViewContainer::DolphinViewContainer(const QUrl& url, QWidget* parent) :
             this, &DolphinViewContainer::updateDirectorySortingProgress);
     connect(m_view, &DolphinView::selectionChanged,
             this, &DolphinViewContainer::delayedStatusBarUpdate);
-    connect(m_view, &DolphinView::urlAboutToBeChanged,
-            this, &DolphinViewContainer::slotViewUrlAboutToBeChanged);
     connect(m_view, &DolphinView::errorMessage,
             this, &DolphinViewContainer::showErrorMessage);
     connect(m_view, &DolphinView::urlIsFileError,
@@ -135,8 +133,6 @@ DolphinViewContainer::DolphinViewContainer(const QUrl& url, QWidget* parent) :
             this, &DolphinViewContainer::slotUrlNavigatorLocationAboutToBeChanged);
     connect(m_urlNavigator, &KUrlNavigator::urlChanged,
             this, &DolphinViewContainer::slotUrlNavigatorLocationChanged);
-    connect(m_urlNavigator, &KUrlNavigator::historyChanged,
-            this, &DolphinViewContainer::slotHistoryChanged);
     connect(m_urlNavigator, &KUrlNavigator::returnPressed,
             this, &DolphinViewContainer::slotReturnPressed);
     connect(m_urlNavigator, &KUrlNavigator::urlsDropped,
@@ -489,7 +485,7 @@ void DolphinViewContainer::slotUrlIsFileError(const QUrl& url)
     item.determineMimeType();
     const QUrl& folderUrl = DolphinView::openItemAsFolderUrl(item, true);
     if (!folderUrl.isEmpty()) {
-        m_view->setUrl(folderUrl);
+        setUrl(folderUrl);
     } else {
         slotItemActivated(item);
     }
@@ -504,7 +500,7 @@ void DolphinViewContainer::slotItemActivated(const KFileItem& item)
 
     const QUrl& url = DolphinView::openItemAsFolderUrl(item, GeneralSettings::browseThroughArchives());
     if (!url.isEmpty()) {
-        m_view->setUrl(url);
+        setUrl(url);
         return;
     }
 
@@ -547,28 +543,9 @@ void DolphinViewContainer::activate()
     setActive(true);
 }
 
-void DolphinViewContainer::slotViewUrlAboutToBeChanged(const QUrl& url)
-{
-    // URL changes of the view can happen in two ways:
-    // 1. The URL navigator gets changed and will trigger the view to update its URL
-    // 2. The URL of the view gets changed and will trigger the URL navigator to update
-    //    its URL (e.g. by clicking on an item)
-    // In this scope the view-state may only get saved in case 2:
-    if (url != m_urlNavigator->locationUrl()) {
-        saveViewState();
-    }
-}
-
-void DolphinViewContainer::slotUrlNavigatorLocationAboutToBeChanged(const QUrl& url)
+void DolphinViewContainer::slotUrlNavigatorLocationAboutToBeChanged(const QUrl&)
 {
-    // URL changes of the view can happen in two ways:
-    // 1. The URL navigator gets changed and will trigger the view to update its URL
-    // 2. The URL of the view gets changed and will trigger the URL navigator to update
-    //    its URL (e.g. by clicking on an item)
-    // In this scope the view-state may only get saved in case 1:
-    if (url != m_view->url()) {
-        saveViewState();
-    }
+    saveViewState();
 }
 
 void DolphinViewContainer::slotUrlNavigatorLocationChanged(const QUrl& url)
@@ -578,6 +555,7 @@ void DolphinViewContainer::slotUrlNavigatorLocationChanged(const QUrl& url)
     if (KProtocolManager::supportsListing(url)) {
         setSearchModeEnabled(isSearchUrl(url));
         m_view->setUrl(url);
+        tryRestoreViewState();
 
         if (m_autoGrabFocus && isActive() && !isSearchUrl(url)) {
             // When an URL has been entered, the view should get the focus.
@@ -641,15 +619,6 @@ void DolphinViewContainer::saveUrlCompletionMode(KCompletion::CompletionMode com
     GeneralSettings::setUrlCompletionMode(completion);
 }
 
-void DolphinViewContainer::slotHistoryChanged()
-{
-    QByteArray locationState = m_urlNavigator->locationState();
-    if (!locationState.isEmpty()) {
-        QDataStream stream(&locationState, QIODevice::ReadOnly);
-        m_view->restoreState(stream);
-    }
-}
-
 void DolphinViewContainer::slotReturnPressed()
 {
     if (!GeneralSettings::editableUrl()) {
@@ -699,3 +668,12 @@ void DolphinViewContainer::saveViewState()
     m_view->saveState(stream);
     m_urlNavigator->saveLocationState(locationState);
 }
+
+void DolphinViewContainer::tryRestoreViewState()
+{
+    QByteArray locationState = m_urlNavigator->locationState();
+    if (!locationState.isEmpty()) {
+        QDataStream stream(&locationState, QIODevice::ReadOnly);
+        m_view->restoreState(stream);
+    }
+}
-- 
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