ros_topic_dialog.cpp

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/*
 * Copyright (c) 2011, Willow Garage, Inc.
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#include "rviz/properties/ros_topic_dialog.h"
#include "rviz/properties/ros_topic_tree.h"

#include <QDialogButtonBox>
#include <QVBoxLayout>
#include <QPushButton>

namespace rviz
{

RosTopicDialog::RosTopicDialog( const std::string& message_type, std::string* topic_name_output, QWidget* parent )
  : QDialog( parent )
  , message_type_( message_type )
  , topic_name_output_( topic_name_output )
{
  topic_tree_ = new RosTopicTree( message_type_, this );

  button_box_ = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, this );
  connect( button_box_, SIGNAL( accepted() ), this, SLOT( accept() ));
  connect( button_box_, SIGNAL( rejected() ), this, SLOT( reject() ));
  button_box_->button( QDialogButtonBox::Ok )->setEnabled( false );

  QVBoxLayout* layout = new QVBoxLayout;
  layout->addWidget( topic_tree_ );
  layout->addWidget( button_box_ );

  setLayout( layout );

  connect( topic_tree_, SIGNAL( selectedTopicChanged( std::string )),
           this, SLOT( onTopicChanged( std::string )));

  connect( topic_tree_, SIGNAL( topicActivated( std::string )),
           this, SLOT( onTopicActivated( std::string )));
}

void RosTopicDialog::onTopicChanged( std::string new_topic )
{
  topic_name_ = new_topic;
  bool selection_is_valid = (new_topic != "");
  button_box_->button( QDialogButtonBox::Ok )->setEnabled( selection_is_valid );
}

void RosTopicDialog::onTopicActivated( std::string new_topic )
{
  if( new_topic != "" )
  {
    topic_name_ = new_topic;
    Q_EMIT accept();
  }
}

void RosTopicDialog::accept()
{
  *topic_name_output_ = topic_name_;
  QDialog::accept();
}

}; // end namespace rviz