307 lines
9.2 KiB
C++
307 lines
9.2 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "streamsearchmodel.h"
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#include "icons.h"
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#include "itemview.h"
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#include "localize.h"
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#include "playqueuemodel.h"
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#include "networkaccessmanager.h"
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#include "stdactions.h"
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#include "actioncollection.h"
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#include <QNetworkReply>
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#include <QString>
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#include <QVariant>
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#include <QXmlStreamReader>
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#include <QMimeData>
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#include <QLocale>
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#include <QUrl>
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#if QT_VERSION >= 0x050000
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#include <QUrlQuery>
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#endif
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static QString constRadioTimeSearchUrl=QLatin1String("http://opml.radiotime.com/Search.ashx");
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StreamSearchModel::StreamSearchModel(QObject *parent)
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: ActionModel(parent)
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, root(new StreamsModel::CategoryItem(QString(), "root"))
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{
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addToFavouritesAction = ActionCollection::get()->createAction("addtofavourites", i18n("Add Stream To Favourites"), StreamsModel::self()->favouritesIcon());
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}
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StreamSearchModel::~StreamSearchModel()
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{
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cancelAll();
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delete root;
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}
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QModelIndex StreamSearchModel::index(int row, int column, const QModelIndex &parent) const
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{
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if (!hasIndex(row, column, parent)) {
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return QModelIndex();
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}
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const StreamsModel::CategoryItem * p = parent.isValid() ? static_cast<StreamsModel::CategoryItem *>(parent.internalPointer()) : root;
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const StreamsModel::Item * c = row<p->children.count() ? p->children.at(row) : 0;
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return c ? createIndex(row, column, (void *)c) : QModelIndex();
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}
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QModelIndex StreamSearchModel::parent(const QModelIndex &index) const
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{
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if (!index.isValid()) {
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return QModelIndex();
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}
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StreamsModel::Item * parent = toItem(index)->parent;
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if (!parent || parent == root || !parent->parent) {
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return QModelIndex();
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}
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return createIndex(static_cast<const StreamsModel::CategoryItem *>(parent->parent)->children.indexOf(parent), 0, parent);
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}
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QVariant StreamSearchModel::headerData(int /*section*/, Qt::Orientation /*orientation*/, int /*role*/) const
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{
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return QVariant();
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}
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int StreamSearchModel::rowCount(const QModelIndex &parent) const
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{
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if (parent.isValid()) {
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StreamsModel::Item *item = toItem(parent);
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return item->isCategory() ? static_cast<StreamsModel::CategoryItem *>(item)->children.count() : 0;
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}
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return root->children.count();
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}
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int StreamSearchModel::columnCount(const QModelIndex &) const
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{
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return 1;
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}
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QVariant StreamSearchModel::data(const QModelIndex &index, int role) const
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{
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const StreamsModel::Item *item = toItem(index);
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switch (role) {
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case Qt::DecorationRole:
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return item->isCategory() ? Icons::self()->streamCategoryIcon : Icons::self()->radioStreamIcon;
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case Qt::DisplayRole:
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return item->name;
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case Qt::ToolTipRole:
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return item->isCategory() ? item->name : (item->name+QLatin1String("<br><small><i>")+item->url+QLatin1String("</i></small>"));
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case ItemView::Role_SubText:
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if (item->isCategory()) {
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const StreamsModel::CategoryItem *cat=static_cast<const StreamsModel::CategoryItem *>(item);
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switch (cat->state) {
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case StreamsModel::CategoryItem::Initial:
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return i18n("No Loaded");
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case StreamsModel::CategoryItem::Fetching:
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return i18n("Loading...");
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default:
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#ifdef ENABLE_KDE_SUPPORT
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return i18np("1 Entry", "%1 Entries", cat->children.count());
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#else
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return QTP_ENTRIES_STR(cat->children.count());
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#endif
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}
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} else {
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return item->subText.isEmpty() ? QLatin1String("-") : item->subText;
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}
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break;
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case ItemView::Role_Actions:
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if (!item->isCategory()){
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QVariant v;
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v.setValue<QList<Action *> >(QList<Action *>() << StdActions::self()->replacePlayQueueAction << addToFavouritesAction);
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return v;
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}
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break;
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default:
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break;
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}
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return QVariant();
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}
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Qt::ItemFlags StreamSearchModel::flags(const QModelIndex &index) const
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{
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if (index.isValid()) {
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if (toItem(index)->isCategory()) {
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return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
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} else {
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return Qt::ItemIsSelectable | Qt::ItemIsDragEnabled | Qt::ItemIsEnabled;
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}
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} else {
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return Qt::NoItemFlags;
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}
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}
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bool StreamSearchModel::hasChildren(const QModelIndex &index) const
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{
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return index.isValid() ? toItem(index)->isCategory() : true;
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}
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bool StreamSearchModel::canFetchMore(const QModelIndex &index) const
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{
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if (index.isValid()) {
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StreamsModel::Item *item = toItem(index);
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return item->isCategory() && StreamsModel::CategoryItem::Initial==static_cast<StreamsModel::CategoryItem *>(item)->state && !item->url.isEmpty();
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} else {
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return false;
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}
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}
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void StreamSearchModel::fetchMore(const QModelIndex &index)
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{
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if (!index.isValid()) {
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return;
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}
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StreamsModel::Item *item = toItem(index);
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if (item->isCategory() && !item->url.isEmpty()) {
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StreamsModel::CategoryItem *cat=static_cast<StreamsModel::CategoryItem *>(item);
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QNetworkReply *job=NetworkAccessManager::self()->get(cat->url);
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if (jobs.isEmpty()) {
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emit loading();
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}
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jobs.insert(job, cat);
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connect(job, SIGNAL(finished()), this, SLOT(jobFinished()));
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cat->state=StreamsModel::CategoryItem::Fetching;
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emit dataChanged(index, index);
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}
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}
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QStringList StreamSearchModel::filenames(const QModelIndexList &indexes, bool addPrefix) const
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{
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QStringList fnames;
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foreach(QModelIndex index, indexes) {
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StreamsModel::Item *item=static_cast<StreamsModel::Item *>(index.internalPointer());
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if (!item->isCategory() && !fnames.contains(item->url)) {
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fnames << StreamsModel::modifyUrl(item->url, addPrefix, item->name);
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}
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}
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return fnames;
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}
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QMimeData * StreamSearchModel::mimeData(const QModelIndexList &indexes) const
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{
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QMimeData *mimeData = new QMimeData();
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PlayQueueModel::encode(*mimeData, PlayQueueModel::constFileNameMimeType, filenames(indexes, true));
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return mimeData;
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}
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QStringList StreamSearchModel::mimeTypes() const
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{
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QStringList types;
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types << PlayQueueModel::constFileNameMimeType;
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return types;
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}
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void StreamSearchModel::clear()
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{
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cancelAll();
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beginRemoveRows(QModelIndex(), 0, root->children.count()-1);
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qDeleteAll(root->children);
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root->children.clear();
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endRemoveRows();
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}
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void StreamSearchModel::search(const QString &searchTerm, bool stationsOnly)
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{
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if (searchTerm==currentSearch) {
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return;
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}
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clear();
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QUrl searchUrl(constRadioTimeSearchUrl);
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#if QT_VERSION < 0x050000
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QUrl &query=searchUrl;
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#else
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QUrlQuery query;
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#endif
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if (stationsOnly) {
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query.addQueryItem("types", "station");
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}
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query.addQueryItem("query", searchTerm);
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QString locale=QLocale::system().name();
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if (!locale.isEmpty()) {
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query.addQueryItem("locale", locale);
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}
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#if QT_VERSION >= 0x050000
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searchUrl.setQuery(query);
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#endif
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QNetworkReply *job=NetworkAccessManager::self()->get(searchUrl);
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if (jobs.isEmpty()) {
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emit loading();
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}
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jobs.insert(job, root);
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connect(job, SIGNAL(finished()), this, SLOT(jobFinished()));
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}
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void StreamSearchModel::cancelAll()
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{
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if (!jobs.isEmpty()) {
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QList<QNetworkReply *> jobList=jobs.keys();
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foreach (QNetworkReply *j, jobList) {
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j->abort();
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j->deleteLater();
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disconnect(j, SIGNAL(finished()), this, SLOT(jobFinished()));
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}
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jobs.clear();
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emit loaded();
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}
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}
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void StreamSearchModel::jobFinished()
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{
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QNetworkReply *job=dynamic_cast<QNetworkReply *>(sender());
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if (!job) {
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return;
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}
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job->deleteLater();
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if (jobs.contains(job)) {
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StreamsModel::CategoryItem *cat=jobs[job];
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cat->state=StreamsModel::CategoryItem::Fetched;
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jobs.remove(job);
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QModelIndex index=cat==root ? QModelIndex() : createIndex(cat->parent->children.indexOf(cat), 0, (void *)cat);
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if (QNetworkReply::NoError==job->error()) {
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QList<StreamsModel::Item *> newItems=StreamsModel::parseRadioTimeResponse(job, cat, true);
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if (!newItems.isEmpty()) {
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beginInsertRows(index, cat->children.count(), (cat->children.count()+newItems.count())-1);
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cat->children+=newItems;
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endInsertRows();
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}
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}
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emit dataChanged(index, index);
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if (jobs.isEmpty()) {
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emit loaded();
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}
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}
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}
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