Improve related splitter UX

* Prevent group pane from being hidden just by dragging. Introduce new View menu setting to hide the group pane.
* Replace the preview panel "close" icon with a "collapse down" icon making the intention clearer.
* Better organize the view menu

COPYING

@@ -141,6 +141,7 @@ Copyright: 2022 KeePassXC Team <team@keepassxc.org>
 License: MIT
 
 Files: share/icons/application/scalable/actions/application-exit.svg
+       share/icons/application/scalable/actions/arrow-collapse-down.svg
        share/icons/application/scalable/actions/attributes-copy.svg
        share/icons/application/scalable/actions/auto-type.svg
        share/icons/application/scalable/actions/bitwarden.svg

share/icons/icons.qrc

@@ -6,6 +6,7 @@
         <file>application/256x256/apps/keepassxc.png</file>
 
         <file>application/scalable/actions/application-exit.svg</file>
+        <file>application/scalable/actions/arrow-collapse-down.svg</file>
         <file>application/scalable/actions/attributes-copy.svg</file>
         <file>application/scalable/actions/auto-type.svg</file>
         <file>application/scalable/actions/bitwarden.svg</file>

share/translations/keepassxc_en.ts

@@ -6179,6 +6179,14 @@ Expect some bugs and minor issues, this version is meant for testing purposes.</
         <source>Setup Remote Sync…</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>Show Group Panel</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Toggle Show Group Panel</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ManageDatabase</name>

src/core/Config.cpp

@@ -96,6 +96,7 @@ static const QHash<Config::ConfigKey, ConfigDirective> configStrings = {
     {Config::GUI_HideMenubar, {QS("GUI/HideMenubar"), Roaming, false}},
     {Config::GUI_HideToolbar, {QS("GUI/HideToolbar"), Roaming, false}},
     {Config::GUI_MovableToolbar, {QS("GUI/MovableToolbar"), Roaming, false}},
+    {Config::GUI_HideGroupPanel, {QS("GUI/HideGroupPanel"), Roaming, false}},
     {Config::GUI_HidePreviewPanel, {QS("GUI/HidePreviewPanel"), Roaming, false}},
     {Config::GUI_AlwaysOnTop, {QS("GUI/GUI_AlwaysOnTop"), Local, false}},
     {Config::GUI_ToolButtonStyle, {QS("GUI/ToolButtonStyle"), Roaming, Qt::ToolButtonIconOnly}},

src/core/Config.h

@@ -78,6 +78,7 @@ class Config : public QObject
         GUI_HideMenubar,
         GUI_HideToolbar,
         GUI_MovableToolbar,
+        GUI_HideGroupPanel,
         GUI_HidePreviewPanel,
         GUI_AlwaysOnTop,
         GUI_ToolButtonStyle,

src/gui/DatabaseWidget.cpp

@@ -128,6 +128,8 @@ DatabaseWidget::DatabaseWidget(QSharedPointer<Database> db, QWidget* parent)
     m_groupSplitter->setStretchFactor(0, 100);
     m_groupSplitter->setStretchFactor(1, 0);
     m_groupSplitter->setSizes({1, 1});
+    // Initial visibility based on config value
+    m_groupSplitter->setVisible(!config()->get(Config::GUI_HideGroupPanel).toBool());
 
     auto rightHandSideWidget = new QWidget(m_mainSplitter);
     auto rightHandSideVBox = new QVBoxLayout();
@@ -140,12 +142,11 @@ DatabaseWidget::DatabaseWidget(QSharedPointer<Database> db, QWidget* parent)
     rightHandSideWidget->setLayout(rightHandSideVBox);
     m_entryView = new EntryView(rightHandSideWidget);
 
-    m_mainSplitter->setChildrenCollapsible(true);
+    m_mainSplitter->setChildrenCollapsible(false);
     m_mainSplitter->addWidget(m_groupSplitter);
     m_mainSplitter->addWidget(rightHandSideWidget);
     m_mainSplitter->setStretchFactor(0, 0);
     m_mainSplitter->setStretchFactor(1, 100);
-    m_mainSplitter->setCollapsible(1, false);
     m_mainSplitter->setSizes({1, 1});
 
     m_previewSplitter->setOrientation(Qt::Vertical);
@@ -217,6 +218,7 @@ DatabaseWidget::DatabaseWidget(QSharedPointer<Database> db, QWidget* parent)
     connect(m_databaseOpenWidget, SIGNAL(dialogFinished(bool)), SLOT(loadDatabase(bool)));
     connect(this, SIGNAL(currentChanged(int)), SLOT(emitCurrentModeChanged()));
     connect(this, SIGNAL(requestGlobalAutoType(const QString&)), parent, SLOT(performGlobalAutoType(const QString&)));
+    connect(config(), &Config::changed, this, &DatabaseWidget::onConfigChanged);
     // clang-format on
 
     connectDatabaseSignals();
@@ -408,6 +410,15 @@ void DatabaseWidget::setSplitterSizes(const QHash<Config::ConfigKey, QList<int>>
     }
 }
 
+void DatabaseWidget::onConfigChanged(Config::ConfigKey key)
+{
+    if (key == Config::GUI_HideGroupPanel) {
+        // Toggle the group splitter visibility and reset the size
+        m_groupSplitter->setVisible(!config()->get(Config::GUI_HideGroupPanel).toBool());
+        setSplitterSizes({{Config::GUI_SplitterState, QList<int>({})}});
+    }
+}
+
 void DatabaseWidget::setSearchStringForAutoType(const QString& search)
 {
     m_searchStringForAutoType = search;

src/gui/DatabaseWidget.h

@@ -288,6 +288,7 @@ private slots:
     // Database autoreload slots
     void reloadDatabaseFile();
     void restoreGroupEntryFocus(const QUuid& groupUuid, const QUuid& EntryUuid);
+    void onConfigChanged(Config::ConfigKey key);
 
 private:
     int addChildWidget(QWidget* w);

src/gui/EntryPreviewWidget.cpp

@@ -50,7 +50,7 @@ EntryPreviewWidget::EntryPreviewWidget(QWidget* parent)
 
     // Entry
     m_ui->entryTotpButton->setIcon(icons()->icon("totp"));
-    m_ui->entryCloseButton->setIcon(icons()->icon("dialog-close"));
+    m_ui->entryCloseButton->setIcon(icons()->icon("arrow-collapse-down"));
     m_ui->toggleUsernameButton->setIcon(icons()->onOffIcon("password-show", true));
     m_ui->togglePasswordButton->setIcon(icons()->onOffIcon("password-show", true));
     m_ui->toggleEntryNotesButton->setIcon(icons()->onOffIcon("password-show", true));

src/gui/MainWindow.cpp

@@ -1968,6 +1968,11 @@ void MainWindow::initViewMenu()
         applySettingsChanges();
     });
 
+    m_ui->actionShowGroupPanel->setChecked(!config()->get(Config::GUI_HideGroupPanel).toBool());
+    connect(m_ui->actionShowGroupPanel, &QAction::toggled, this, [](bool checked) {
+        config()->set(Config::GUI_HideGroupPanel, !checked);
+    });
+
     m_ui->actionShowPreviewPanel->setChecked(!config()->get(Config::GUI_HidePreviewPanel).toBool());
     connect(m_ui->actionShowPreviewPanel, &QAction::toggled, this, [](bool checked) {
         config()->set(Config::GUI_HidePreviewPanel, !checked);
@@ -2071,6 +2076,7 @@ void MainWindow::initActionCollection()
                     m_ui->actionShowMenubar,
 #endif
                     m_ui->actionShowToolbar,
+                    m_ui->actionShowGroupPanel,
                     m_ui->actionShowPreviewPanel,
                     m_ui->actionAllowScreenCapture,
                     m_ui->actionAlwaysOnTop,

src/gui/MainWindow.ui

@@ -387,9 +387,13 @@
     <addaction name="actionCompactMode"/>
     <addaction name="actionAlwaysOnTop"/>
     <addaction name="actionAllowScreenCapture"/>
+    <addaction name="separator"/>
     <addaction name="actionShowPreviewPanel"/>
+    <addaction name="actionShowGroupPanel"/>
+    <addaction name="separator"/>
     <addaction name="actionShowMenubar"/>
     <addaction name="actionShowToolbar"/>
+    <addaction name="separator"/>
     <addaction name="actionHideUsernames"/>
     <addaction name="actionHidePasswords"/>
    </widget>
@@ -1285,6 +1289,20 @@
     <string>Import…</string>
    </property>
   </action>
+  <action name="actionShowGroupPanel">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Show Group Panel</string>
+   </property>
+   <property name="toolTip">
+    <string>Toggle Show Group Panel</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>