[FEATURE] Add project loading support from browser

Author: NathanW2

python/core/qgsdataitem.sip

@@ -47,6 +47,8 @@ class QgsDataItem : QObject
     sipType = sipType_QgsZipItem;
   else if (qobject_cast<QgsDataCollectionItem*>(sipCpp))
     sipType = sipType_QgsDataCollectionItem;
+  else if (qobject_cast<QgsProjectItem*>(sipCpp))
+    sipType = sipType_QgsProjectItem;
   else
     sipType = 0;
 %End
@@ -324,6 +326,21 @@ class QgsDirectoryItem : QgsDataCollectionItem
     // static QVector<QLibrary*> mLibraries;
 };
 
+/**
+ Data item that can be used to represent QGIS projects.
+ */
+class QgsProjectItem : QgsDataItem
+{
+%TypeHeaderCode
+#include <qgsdataitem.h>
+%End
+  public:
+
+    QgsProjectItem( QgsDataItem* parent, const QString& name, const QString& path );
+    ~QgsProjectItem();
+
+};
+
 /**
  Data item that can be used to report problems (e.g. network error)
  */

src/app/qgsbrowserdockwidget.cpp

@@ -541,6 +541,16 @@ void QgsBrowserDockWidget::addLayerAtIndex( const QModelIndex& index )
   QgsDebugMsg( QString( "rowCount() = %1" ).arg( mModel->rowCount( mProxyModel->mapToSource( index ) ) ) );
   QgsDataItem *item = mModel->dataItem( mProxyModel->mapToSource( index ) );
 
+  if ( item != NULL && item->type() == QgsDataItem::Project )
+  {
+    QgsProjectItem *projectItem = qobject_cast<QgsProjectItem*>( item );
+    if ( projectItem != NULL )
+    {
+      QApplication::setOverrideCursor( Qt::WaitCursor );
+      QgisApp::instance()->openFile( projectItem->path() );
+      QApplication::restoreOverrideCursor();
+    }
+  }
   if ( item != NULL && item->type() == QgsDataItem::Layer )
   {
     QgsLayerItem *layerItem = qobject_cast<QgsLayerItem*>( item );
@@ -566,6 +576,21 @@ void QgsBrowserDockWidget::addSelectedLayers()
   QModelIndexList list = mBrowserView->selectionModel()->selectedIndexes();
   qSort( list );
 
+  // If any of the layer items are QGIS we just open and exit the loop
+  for ( int i = 0; i <= list.size(); i++ )
+  {
+    QgsDataItem *item = mModel->dataItem( mProxyModel->mapToSource( list[i] ) );
+    if ( item && item->type() == QgsDataItem::Project )
+    {
+      QgsProjectItem *projectItem = qobject_cast<QgsProjectItem*>( item );
+      if ( projectItem )
+        QgisApp::instance()->openFile( projectItem->path() );
+
+      QApplication::restoreOverrideCursor();
+      return;
+    }
+  }
+
   // add items in reverse order so they are in correct order in the layers dock
   for ( int i = list.size() - 1; i >= 0; i-- )
   {

src/core/qgsbrowsermodel.cpp

@@ -16,6 +16,7 @@
 #include <QApplication>
 #include <QStyle>
 #include <QtConcurrentMap>
+#include <QUrl>
 
 #include "qgis.h"
 #include "qgsapplication.h"
@@ -185,7 +186,7 @@ Qt::ItemFlags QgsBrowserModel::flags( const QModelIndex & index ) const
   Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 
   QgsDataItem* ptr = ( QgsDataItem* ) index.internalPointer();
-  if ( ptr->type() == QgsDataItem::Layer )
+  if ( ptr->type() == QgsDataItem::Layer || ptr->type() == QgsDataItem::Project )
   {
     flags |= Qt::ItemIsDragEnabled;
   }
@@ -448,6 +449,16 @@ QMimeData * QgsBrowserModel::mimeData( const QModelIndexList &indexes ) const
     if ( index.isValid() )
     {
       QgsDataItem* ptr = ( QgsDataItem* ) index.internalPointer();
+      if ( ptr->type() == QgsDataItem::Project )
+      {
+        QMimeData *mimeData = new QMimeData();
+        QUrl url = QUrl::fromLocalFile( ptr->path() );
+        QList<QUrl> urls;
+        urls << url;
+        mimeData->setUrls( urls );
+        return mimeData;
+      }
+
       if ( ptr->type() != QgsDataItem::Layer ) continue;
       QgsLayerItem *layer = ( QgsLayerItem* ) ptr;
       lst.append( QgsMimeDataUtils::Uri( layer ) );

src/core/qgsdataitem.cpp

@@ -813,6 +813,13 @@ QVector<QgsDataItem*> QgsDirectoryItem::createChildren()
     QString path = dir.absoluteFilePath( name );
     QFileInfo fileInfo( path );
 
+    if ( fileInfo.suffix() == "qgs" )
+    {
+      QgsDataItem * item = new QgsProjectItem( this, name, path );
+      children.append( item );
+      continue;
+    }
+
     // vsizip support was added to GDAL/OGR 1.6 but GDAL_VERSION_NUM not available here
     //   so we assume it's available anyway
     {
@@ -1064,6 +1071,17 @@ void QgsDirectoryParamWidget::showHideColumn()
   settings.setValue( "/dataitem/directoryHiddenColumns", lst );
 }
 
+QgsProjectItem::QgsProjectItem( QgsDataItem* parent, const QString &name, const QString& path )
+    : QgsDataItem( QgsDataItem::Project, parent, name, path )
+{
+  mIconName = ":/images/icons/qgis-icon-16x16.png";
+
+  setState( Populated ); // no more children
+}
+
+QgsProjectItem::~QgsProjectItem()
+{
+}
 
 QgsErrorItem::QgsErrorItem( QgsDataItem* parent, const QString& error, const QString& path )
     : QgsDataItem( QgsDataItem::Error, parent, error, path )

src/core/qgsdataitem.h

@@ -84,7 +84,8 @@ class CORE_EXPORT QgsDataItem : public QObject
       Directory,
       Layer,
       Error,
-      Favourites
+      Favourites,
+      Project
     };
 
     /** Create new data item. */
@@ -424,6 +425,19 @@ class CORE_EXPORT QgsDirectoryItem : public QgsDataCollectionItem
     bool mRefreshLater;
 };
 
+/**
+ Data item that can be used to represent QGIS projects.
+ */
+class CORE_EXPORT QgsProjectItem : public QgsDataItem
+{
+    Q_OBJECT
+  public:
+
+    QgsProjectItem( QgsDataItem* parent, const QString& name, const QString& path );
+    ~QgsProjectItem();
+
+};
+
 /**
  Data item that can be used to report problems (e.g. network error)
  */