/*
 * Cantata
 *
 * Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "synccollectionwidget.h"
#include "treeview.h"
#include "musiclibraryproxymodel.h"
#include "icon.h"
#include "localize.h"
#include "actioncollection.h"
#include <QTimer>
#include <QAction>
#include <QDebug>

SyncCollectionWidget::SyncCollectionWidget(QWidget *parent, const QString &title, const QString &action, bool showCovers)
    : QWidget(parent)
    , searchTimer(0)
{
    setupUi(this);
    groupBox->setTitle(title);
    button->setText(action);
    button->setEnabled(false);

    model=new MusicLibraryModel(this, false);
    proxy=new MusicLibraryProxyModel(this);
    model->setUseAlbumImages(showCovers);
    proxy->setSourceModel(model);
    tree->setModel(proxy);
    tree->setPageDefaults();
    search->setText(QString());
    search->setPlaceholderText(i18n("Search"));
    connect(tree, SIGNAL(itemsSelected(bool)), button, SLOT(setEnabled(bool)));
    connect(button, SIGNAL(clicked()), SLOT(copySongs()));
    connect(search, SIGNAL(returnPressed()), this, SLOT(delaySearchItems()));
    connect(search, SIGNAL(textChanged(const QString)), this, SLOT(delaySearchItems()));

    QAction *act=new QAction(action, this);
    connect(act, SIGNAL(triggered(bool)), SLOT(copySongs()));
    tree->addAction(act);

    QAction *expand=ActionCollection::get()->action("expandall");
    QAction *collapse=ActionCollection::get()->action("collapseall");
    if (expand && collapse) {
        addAction(expand);
        addAction(collapse);
        connect(expand, SIGNAL(triggered(bool)), this, SLOT(expandAll()));
        connect(collapse, SIGNAL(triggered(bool)), this, SLOT(collapseAll()));
    }
}

SyncCollectionWidget::~SyncCollectionWidget()
{
}

void SyncCollectionWidget::copySongs()
{
    const QModelIndexList selected = tree->selectedIndexes();

    if (0==selected.size()) {
        return;
    }

    QModelIndexList mapped;
    foreach (const QModelIndex &idx, selected) {
        mapped.append(proxy->mapToSource(idx));
    }

    emit copy(model->songs(mapped));
}

void SyncCollectionWidget::delaySearchItems()
{
    if (search->text().trimmed().isEmpty()) {
        if (searchTimer) {
            searchTimer->stop();
        }
        searchItems();
    } else {
        if (!searchTimer) {
            searchTimer=new QTimer(this);
            searchTimer->setSingleShot(true);
            connect(searchTimer, SIGNAL(timeout()), SLOT(searchItems()));
        }
        searchTimer->start(500);
    }
}

void SyncCollectionWidget::searchItems()
{
    QString text=search->text().trimmed();
    proxy->update(text);
    if (proxy->enabled() && !text.isEmpty()) {
        tree->expandAll();
    }
}

void SyncCollectionWidget::expandAll()
{
    QWidget *f=QApplication::focusWidget();
    if (f && qobject_cast<QTreeView *>(f)) {
        static_cast<QTreeView *>(f)->expandAll();
    }
}

void SyncCollectionWidget::collapseAll()
{
    QWidget *f=QApplication::focusWidget();
    if (f && qobject_cast<QTreeView *>(f)) {
        static_cast<QTreeView *>(f)->collapseAll();
    }
}