Add buttons to collapse and expand all elements

Summary:
Adds two buttons on the bottom right to expand and collapse all elements in annotations
BUG: 377024
T8553

With latest breeze-icons:
{F6687517}

Without it:

{F6687519}

{F6687518}

Reviewers: #okular, #vdg, ngraham

Subscribers: ndavis, aacid, ngraham, okular-devel

Tags: #okular

Differential Revision: https://phabricator.kde.org/D18358

ui/side_reviews.cpp

@@ -146,6 +146,16 @@ Reviews::Reviews( QWidget * parent, Okular::Document * document )
     connect(curPageOnlyAction, &QAction::toggled, this, &Reviews::slotCurrentPageOnly);
     curPageOnlyAction->setChecked( Okular::Settings::currentPageOnly() );
 
+    // Adds space between left actions, so that the next two buttons are aligned to the right
+    QWidget * spacer = new QWidget();
+    spacer->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
+    toolBar->addWidget( spacer );
+
+    QAction * expandAll = toolBar->addAction( QIcon::fromTheme( QStringLiteral("expand-all") ), i18n( "Expand all elements" ) );
+    connect(expandAll, &QAction::triggered, this, &Reviews::slotExpandAll);
+    QAction * collapseAll = toolBar->addAction( QIcon::fromTheme( QStringLiteral("collapse-all") ), i18n( "Collapse all elements" ) );
+    connect(collapseAll, &QAction::triggered, this, &Reviews::slotCollapseAll);
+
     connect(m_view, &TreeView::activated, this, &Reviews::activated);
 
     m_view->setContextMenuPolicy( Qt::CustomContextMenu );
@@ -201,6 +211,16 @@ void Reviews::slotCurrentPageOnly( bool on )
 
     m_view->expandAll();
 }
+
+void Reviews::slotExpandAll()
+{
+    m_view->expandAll();
+}
+
+void Reviews::slotCollapseAll()
+{
+    m_view->collapseAll();
+}
 //END GUI Slots
 
 

ui/side_reviews.h

@@ -49,6 +49,8 @@ class Reviews : public QWidget, public Okular::DocumentObserver
         void slotPageEnabled( bool );
         void slotAuthorEnabled( bool );
         void slotCurrentPageOnly( bool );
+        void slotExpandAll();
+        void slotCollapseAll();
 
     Q_SIGNALS:
         void openAnnotationWindow( Okular::Annotation *annotation, int pageNumber );