qgslayertreeembeddedwidgetregistry.cpp

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/***************************************************************************
  qgslayertreeembeddedwidgetregistry.cpp
  --------------------------------------
  Date                 : May 2016
  Copyright            : (C) 2016 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#include "qgslayertreeembeddedwidgetregistry.h"
 
#include "qgslayertreeembeddedwidgetsimpl.h"
 
QgsLayerTreeEmbeddedWidgetRegistry::QgsLayerTreeEmbeddedWidgetRegistry()
{
  // populate with default implementations
  addProvider( new QgsLayerTreeOpacityWidget::Provider() );
}
 
QgsLayerTreeEmbeddedWidgetRegistry::~QgsLayerTreeEmbeddedWidgetRegistry()
{
  const auto constMProviders = mProviders;
  for ( QgsLayerTreeEmbeddedWidgetProvider *provider : constMProviders )
  {
    removeProvider( provider->id() );
  }
}
 
QStringList QgsLayerTreeEmbeddedWidgetRegistry::providers() const
{
  return mProviders.keys();
}
 
QgsLayerTreeEmbeddedWidgetProvider *QgsLayerTreeEmbeddedWidgetRegistry::provider( const QString &providerId ) const
{
  return mProviders.value( providerId );
}
 
bool QgsLayerTreeEmbeddedWidgetRegistry::addProvider( QgsLayerTreeEmbeddedWidgetProvider *provider )
{
  if ( mProviders.contains( provider->id() ) )
    return false;
 
  mProviders.insert( provider->id(), provider );
  return true;
}
 
bool QgsLayerTreeEmbeddedWidgetRegistry::removeProvider( const QString &providerId )
{
  if ( !mProviders.contains( providerId ) )
    return false;
 
  delete mProviders.take( providerId );
  return true;
}