#include "FieldsPage.h"
#include "../dictionary/Dictionary.h"
#include "../dictionary/CardPack.h"
#include "FieldsListModel.h"
#include "FieldsPreviewModel.h"

#include <QLabel>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QToolButton>
#include <QGroupBox>

FieldsPage::FieldsPage( DictionaryOptionsDialog* aParent ):
    QWidget( aParent ), m_parent( aParent )
    {
    createFieldsList();
    createFieldsPreview();

    QHBoxLayout* mainLt = new QHBoxLayout;
    mainLt->addLayout( m_fieldsLt );
    mainLt->addWidget( m_previewGroup );
    setLayout( mainLt );
    }

void FieldsPage::createFieldsList()
    {
    QGroupBox* fieldsGroup = new QGroupBox( tr("Fields") );

    QToolButton* moveUpBtn = new QToolButton;
    moveUpBtn->setIcon(QIcon(":/images/1uparrow.png"));
    moveUpBtn->setObjectName("up");
    moveUpBtn->setToolTip(tr("Move up"));
    QToolButton* moveDownBtn = new QToolButton;
    moveDownBtn->setIcon(QIcon(":/images/1downarrow.png"));
    moveDownBtn->setObjectName("down");
    moveDownBtn->setToolTip(tr("Move down"));
    QVBoxLayout* upDownLt = new QVBoxLayout;
    upDownLt->addWidget( moveUpBtn );
    upDownLt->addWidget( moveDownBtn );
    upDownLt->addStretch( 1 );

    connect( moveUpBtn, SIGNAL(clicked()), this, SLOT(moveItemsUpDown()) );
    connect( moveDownBtn, SIGNAL(clicked()), this, SLOT(moveItemsUpDown()) );

    m_fieldsListView = new FieldsView;
    m_fieldsListView->setModel( m_parent->m_fieldsListModel );
    QHBoxLayout* listHLt = new QHBoxLayout;
    listHLt->addWidget( m_fieldsListView );
    listHLt->addLayout( upDownLt );
    fieldsGroup->setLayout( listHLt );    

    QPushButton* addBtn = new QPushButton( QPixmap(":/images/add.png"), tr("Add") );
    addBtn->setToolTip(tr("Add new field"));
    QPushButton* removeBtn = new QPushButton( QPixmap(":/images/delete.png"), tr("Remove") );
    removeBtn->setToolTip(tr("Remove field(s)"));
    QPushButton* editBtn = new QPushButton( QPixmap(":/images/edit.png"), tr("Rename") );
    editBtn->setToolTip(tr("Rename field"));
    QHBoxLayout* btnLt = new QHBoxLayout;
    btnLt->addWidget( addBtn );
    btnLt->addWidget( removeBtn );
    btnLt->addWidget( editBtn );

    connect( addBtn, SIGNAL(clicked()), this, SLOT(addRow()) );
    connect( removeBtn, SIGNAL(clicked()), this, SLOT(removeRows()) );
    connect( editBtn, SIGNAL(clicked()), this, SLOT(editField()) );

    m_fieldsLt = new QVBoxLayout;
    m_fieldsLt->addWidget( fieldsGroup );
    m_fieldsLt->addLayout( btnLt );
    }

void FieldsPage::createFieldsPreview()
    {
    FieldsPreviewModel* fieldsPreviewModel = new FieldsPreviewModel( m_parent );
    m_fieldsPreview = new QListView;
    m_fieldsPreview->setModel( fieldsPreviewModel );

    connect( m_parent->m_fieldsListModel,
            SIGNAL(dataChanged(const QModelIndex&, const QModelIndex&)),
            m_fieldsPreview, SLOT(reset()) );
    connect( m_parent->m_fieldsListModel,
            SIGNAL(rowsRemoved(const QModelIndex&, int, int)),
            m_fieldsPreview, SLOT(reset()) );
    connect( m_parent->m_fieldsListModel,
            SIGNAL(rowsInserted(const QModelIndex&, int, int)),
            m_fieldsPreview, SLOT(reset()) );

    QHBoxLayout* previewLt = new QHBoxLayout;
    previewLt->addWidget( m_fieldsPreview );
    m_previewGroup = new QGroupBox(tr("Preview"));
    m_previewGroup->setLayout( previewLt );
    }

void FieldsPage::moveItemsUpDown()
    {
    int direction;
    if( sender()->objectName() == "up" )
        direction = -1;
    else
        direction = 1;
    QModelIndexList selectedIndexes = m_fieldsListView->selectionModel()->selectedIndexes();
    m_fieldsListView->model()->moveIndexesUpDown( selectedIndexes,  direction );
    }

void FieldsPage::addRow()
    {
    QModelIndexList selectedIndexes = m_fieldsListView->selectionModel()->selectedRows();
    int row;
    if( selectedIndexes.size() > 0 )
        {
        qSort(selectedIndexes);
        row = selectedIndexes[selectedIndexes.size()-1].row() + 1;
        }
    else
        row = 0;
    m_fieldsListView->model()->insertRow( row, QModelIndex() );
    }

void FieldsPage::removeRows()
    {
    QModelIndexList selectedIndexes = m_fieldsListView->selectionModel()->selectedRows();
    QList<QPersistentModelIndex> pIndexes;
    foreach (QModelIndex idx, selectedIndexes)
        if( idx.isValid() )
            pIndexes << QPersistentModelIndex( idx );
    if( pIndexes.size() == 0 )
        return;
    foreach( QModelIndex idx, pIndexes )
        m_fieldsListView->model()->removeField( idx.row() );
    }

void FieldsPage::editField()
    {
    QModelIndex idx = m_fieldsListView->currentIndex();
    if( !idx.isValid() )
        return;
    m_fieldsListView->edit( idx );
    }