Port composer manager dialog to layouts

Not exposed via GUI yet, but can be shown by entering

iface.showLayoutManager()

in the Python console

python/gui/qgisinterface.sip

@@ -927,6 +927,12 @@ Adds a widget to the user input tool bar.
  The composition remains unaffected.
 .. versionadded:: 3.0
 .. seealso:: :py:func:`openComposer()`
+%End
+
+    virtual void showLayoutManager() = 0;
+%Docstring
+ Opens the layout manager dialog.
+.. versionadded:: 3.0
 %End
 
     virtual QgsLayoutDesignerInterface *openLayoutDesigner( QgsLayout *layout ) = 0;

src/app/CMakeLists.txt

@@ -188,6 +188,7 @@ SET(QGIS_APP_SRCS
   layout/qgslayoutlabelwidget.cpp
   layout/qgslayoutlegendlayersdialog.cpp
   layout/qgslayoutlegendwidget.cpp
+  layout/qgslayoutmanagerdialog.cpp
   layout/qgslayoutmapwidget.cpp
   layout/qgslayoutmapgridwidget.cpp
   layout/qgslayoutpagepropertieswidget.cpp
@@ -402,6 +403,7 @@ SET (QGIS_APP_MOC_HDRS
   layout/qgslayoutlabelwidget.h
   layout/qgslayoutlegendwidget.h
   layout/qgslayoutlegendlayersdialog.h
+  layout/qgslayoutmanagerdialog.h
   layout/qgslayoutmapwidget.h
   layout/qgslayoutmapgridwidget.h
   layout/qgslayoutpagepropertieswidget.h

src/app/composer/qgscomposermanager.cpp

@@ -47,8 +47,8 @@ QgsComposerManager::QgsComposerManager( QWidget *parent, Qt::WindowFlags f ): QD
   QgsSettings settings;
   restoreGeometry( settings.value( QStringLiteral( "Windows/ComposerManager/geometry" ) ).toByteArray() );
 
-  mModel = new QgsLayoutManagerModel( QgsProject::instance()->layoutManager(),
-                                      this );
+  mModel = new QgsComposerManagerModel( QgsProject::instance()->layoutManager(),
+                                        this );
   mComposerListView->setModel( mModel );
 
   connect( mButtonBox, &QDialogButtonBox::rejected, this, &QWidget::close );
@@ -440,27 +440,27 @@ void QgsComposerManager::renameClicked()
 }
 
 //
-// QgsLayoutManagerModel
+// QgsComposerManagerModel
 //
 
-QgsLayoutManagerModel::QgsLayoutManagerModel( QgsLayoutManager *manager, QObject *parent )
+QgsComposerManagerModel::QgsComposerManagerModel( QgsLayoutManager *manager, QObject *parent )
   : QAbstractListModel( parent )
   , mLayoutManager( manager )
 {
-  connect( mLayoutManager, &QgsLayoutManager::compositionAboutToBeAdded, this, &QgsLayoutManagerModel::compositionAboutToBeAdded );
-  connect( mLayoutManager, &QgsLayoutManager::compositionAdded, this, &QgsLayoutManagerModel::compositionAdded );
-  connect( mLayoutManager, &QgsLayoutManager::compositionAboutToBeRemoved, this, &QgsLayoutManagerModel::compositionAboutToBeRemoved );
-  connect( mLayoutManager, &QgsLayoutManager::compositionRemoved, this, &QgsLayoutManagerModel::compositionRemoved );
-  connect( mLayoutManager, &QgsLayoutManager::compositionRenamed, this, &QgsLayoutManagerModel::compositionRenamed );
+  connect( mLayoutManager, &QgsLayoutManager::compositionAboutToBeAdded, this, &QgsComposerManagerModel::compositionAboutToBeAdded );
+  connect( mLayoutManager, &QgsLayoutManager::compositionAdded, this, &QgsComposerManagerModel::compositionAdded );
+  connect( mLayoutManager, &QgsLayoutManager::compositionAboutToBeRemoved, this, &QgsComposerManagerModel::compositionAboutToBeRemoved );
+  connect( mLayoutManager, &QgsLayoutManager::compositionRemoved, this, &QgsComposerManagerModel::compositionRemoved );
+  connect( mLayoutManager, &QgsLayoutManager::compositionRenamed, this, &QgsComposerManagerModel::compositionRenamed );
 }
 
-int QgsLayoutManagerModel::rowCount( const QModelIndex &parent ) const
+int QgsComposerManagerModel::rowCount( const QModelIndex &parent ) const
 {
   Q_UNUSED( parent );
   return mLayoutManager->compositions().count();
 }
 
-QVariant QgsLayoutManagerModel::data( const QModelIndex &index, int role ) const
+QVariant QgsComposerManagerModel::data( const QModelIndex &index, int role ) const
 {
   if ( index.row() < 0 || index.row() >= rowCount( QModelIndex() ) )
     return QVariant();
@@ -480,7 +480,7 @@ QVariant QgsLayoutManagerModel::data( const QModelIndex &index, int role ) const
   }
 }
 
-bool QgsLayoutManagerModel::setData( const QModelIndex &index, const QVariant &value, int role )
+bool QgsComposerManagerModel::setData( const QModelIndex &index, const QVariant &value, int role )
 {
   if ( !index.isValid() || role != Qt::EditRole )
   {
@@ -520,7 +520,7 @@ bool QgsLayoutManagerModel::setData( const QModelIndex &index, const QVariant &v
   return true;
 }
 
-Qt::ItemFlags QgsLayoutManagerModel::flags( const QModelIndex &index ) const
+Qt::ItemFlags QgsComposerManagerModel::flags( const QModelIndex &index ) const
 {
   Qt::ItemFlags flags = QAbstractListModel::flags( index );
 
@@ -534,36 +534,36 @@ Qt::ItemFlags QgsLayoutManagerModel::flags( const QModelIndex &index ) const
   }
 }
 
-QgsComposition *QgsLayoutManagerModel::compositionFromIndex( const QModelIndex &index ) const
+QgsComposition *QgsComposerManagerModel::compositionFromIndex( const QModelIndex &index ) const
 {
   return qobject_cast< QgsComposition * >( qvariant_cast<QObject *>( data( index, CompositionRole ) ) );
 }
 
-void QgsLayoutManagerModel::compositionAboutToBeAdded( const QString & )
+void QgsComposerManagerModel::compositionAboutToBeAdded( const QString & )
 {
   int row = mLayoutManager->compositions().count();
   beginInsertRows( QModelIndex(), row, row );
 }
 
-void QgsLayoutManagerModel::compositionAboutToBeRemoved( const QString &name )
+void QgsComposerManagerModel::compositionAboutToBeRemoved( const QString &name )
 {
   QgsComposition *c = mLayoutManager->compositionByName( name );
   int row = mLayoutManager->compositions().indexOf( c );
   if ( row >= 0 )
     beginRemoveRows( QModelIndex(), row, row );
 }
 
-void QgsLayoutManagerModel::compositionAdded( const QString & )
+void QgsComposerManagerModel::compositionAdded( const QString & )
 {
   endInsertRows();
 }
 
-void QgsLayoutManagerModel::compositionRemoved( const QString & )
+void QgsComposerManagerModel::compositionRemoved( const QString & )
 {
   endRemoveRows();
 }
 
-void QgsLayoutManagerModel::compositionRenamed( QgsComposition *composition, const QString & )
+void QgsComposerManagerModel::compositionRenamed( QgsComposition *composition, const QString & )
 {
   int row = mLayoutManager->compositions().indexOf( composition );
   QModelIndex index = createIndex( row, 0 );

src/app/composer/qgscomposermanager.h

@@ -26,7 +26,7 @@ class QgsComposer;
 class QgsComposition;
 class QgsLayoutManager;
 
-class QgsLayoutManagerModel : public QAbstractListModel
+class QgsComposerManagerModel : public QAbstractListModel
 {
     Q_OBJECT
 
@@ -37,7 +37,7 @@ class QgsLayoutManagerModel : public QAbstractListModel
       CompositionRole = Qt::UserRole + 1,
     };
 
-    explicit QgsLayoutManagerModel( QgsLayoutManager *manager, QObject *parent = nullptr );
+    explicit QgsComposerManagerModel( QgsLayoutManager *manager, QObject *parent = nullptr );
 
     int rowCount( const QModelIndex &parent ) const override;
     QVariant data( const QModelIndex &index, int role ) const override;
@@ -93,7 +93,7 @@ class QgsComposerManager: public QDialog, private Ui::QgsComposerManagerBase
     QPushButton *mRemoveButton = nullptr;
     QPushButton *mRenameButton = nullptr;
     QPushButton *mDuplicateButton = nullptr;
-    QgsLayoutManagerModel *mModel = nullptr;
+    QgsComposerManagerModel *mModel = nullptr;
 
 #ifdef Q_OS_MAC
     void showEvent( QShowEvent *event );

src/app/layout/qgslayoutdesignerdialog.cpp

@@ -615,6 +615,8 @@ QgsLayout *QgsLayoutDesignerDialog::currentLayout()
 void QgsLayoutDesignerDialog::setCurrentLayout( QgsLayout *layout )
 {
   mLayout = layout;
+  connect( mLayout, &QgsLayout::destroyed, this, &QgsLayoutDesignerDialog::close );
+
   mView->setCurrentLayout( layout );
 
   // add undo/redo actions which apply to the correct layout undo stack
@@ -1372,7 +1374,10 @@ void QgsLayoutDesignerDialog::showManager()
   // NOTE: Avoid crash where composer that spawned modal manager from toolbar ends up
   // being deleted by user, but event loop tries to return to layout on manager close
   // (does not seem to be an issue for menu action)
-  QTimer::singleShot( 0,  QgisApp::instance()->actionShowComposerManager(), SLOT( trigger() ) );
+  QTimer::singleShot( 0, this, [ = ]
+  {
+    QgisApp::instance()->showLayoutManager();
+  } );
 }
 
 void QgsLayoutDesignerDialog::paste()