#include "MessageListWidget.h"
#include <QPushButton>
#include <QListWidget>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QInputDialog>
#include <QList>

MessageListWidget::MessageListWidget()
  : messageList( new QListWidget() ),
    addButton( new QPushButton ("+" ) ),
    removeButton( new QPushButton( "-" ) ),
    dialog( new QInputDialog() )
{
  QVBoxLayout *vLayout = new QVBoxLayout();
  QHBoxLayout *hLayout = new QHBoxLayout();

  messageList->setSelectionMode( QAbstractItemView::SingleSelection );
  dialog->setInputMode( QInputDialog::TextInput );
  dialog->setModal( true );
  dialog->setWindowTitle( "New Entry" );

  connect( addButton, &QPushButton::clicked,
           this, &MessageListWidget::showInputDialog );
  connect( removeButton, &QPushButton::clicked,
           this, &MessageListWidget::removeSelectedMessage );

  hLayout->addStretch();
  hLayout->addWidget( addButton );
  hLayout->addWidget( removeButton );
  vLayout->addWidget( messageList );
  vLayout->addLayout( hLayout );

  setWindowTitle( "Todo" );
  setLayout( vLayout );
  resize( 400, 400 );
}


void MessageListWidget::showInputDialog()
{
  dialog->setTextValue( "" );
  dialog->exec();
  if( dialog->textValue().trimmed().size() > 0 )
  {
    messageList->addItem( dialog->textValue() );
    emit entryAdded( dialog->textValue() );
    emit numEntriesChanged( messageList->count() );
  }
}


void MessageListWidget::removeSelectedMessage()
{
  QList<QListWidgetItem *> items = messageList->selectedItems();
  if( items.size() > 0 )
  {
    for( int i = 0; i < messageList->count(); i++ )
    {
      if( messageList->item( i ) == items.first() )
      {
        QListWidgetItem *item = messageList->takeItem( i );
        QString text = item->text();
        delete item;
        emit entryRemoved( text );
        emit numEntriesChanged( messageList->count() );
        return;
      }
    }
  }
}