C++ (Cpp) isChildOfRoot示例

示例#1

文件： playlistsproxymodel.cpp 项目： padertux/cantata

bool PlaylistsProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    if (!filterEnabled) {
        return true;
    }
    if (!isChildOfRoot(sourceParent)) {
        return true;
    }

    const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    PlaylistsModel::Item *item = static_cast<PlaylistsModel::Item *>(index.internalPointer());

    if (item->isPlaylist()) {
        PlaylistsModel::PlaylistItem *pl = static_cast<PlaylistsModel::PlaylistItem *>(item);

        if (matchesFilter(QStringList() << pl->name)) {
            return true;
        }

        for (PlaylistsModel::SongItem *s: pl->songs) {
            if (matchesFilter(*s)) {
                return true;
            }
        }
    } else {
        PlaylistsModel::SongItem *s = static_cast<PlaylistsModel::SongItem *>(item);
        return matchesFilter(*s);
    }

    return false;
}

示例#2

文件： musiclibraryproxymodel.cpp 项目： polpo/cantata-mac

bool MusicLibraryProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    if (!filterEnabled) {
        return true;
    }
    if (!isChildOfRoot(sourceParent)) {
        return true;
    }

    const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    const MusicLibraryItem *item = static_cast<const MusicLibraryItem *>(index.internalPointer());

    if (!filterGenre.isEmpty() && !item->hasGenre(filterGenre)) {
        return false;
    }

    if (filter) {
        if (!sourceParent.isValid()) {
            // All top level items are valid
            return true;
        }

        const MusicLibraryItem *p=item->parentItem();
        while (p->parentItem()) {
            p=p->parentItem();
        }
        if (p!=filter) {
            // If item is not part of 'filter' tree - then we accept it
            return true;
        }
    }

    if (filterStrings.isEmpty()) {
        return true;
    }

    switch (item->itemType()) {
    case MusicLibraryItem::Type_Root:
        return filterAcceptsRoot(item);
    case MusicLibraryItem::Type_Artist:
        return filterAcceptsArtist(item);
    case MusicLibraryItem::Type_Album:
        return filterAcceptsAlbum(item);
    case MusicLibraryItem::Type_Song:
        return filterAcceptsSong(item);
    default:
        break;
    }

    return false;
}

示例#3

文件： musiclibraryproxymodel.cpp 项目： FCR001/cantata

bool MusicLibraryProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    if (!filterEnabled) {
        return true;
    }
    if (!isChildOfRoot(sourceParent)) {
        return true;
    }

    const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    const MusicLibraryItem *item = static_cast<const MusicLibraryItem *>(index.internalPointer());

    if (!filterGenre.isEmpty() && !item->hasGenre(filterGenre)) {
        return false;
    }

    if (filter) {
        if (item==filter) { // Accept top-level item!
            return true;
        }
        const MusicLibraryItem *p=item->parentItem();
        while (p && p->parentItem()) {
            p=p->parentItem();
        }
        if (p!=filter) {  // Accept all items that are not children of top-level item!
            return true;
        }
    }

    if (filterStrings.isEmpty()) {
        return true;
    }

    switch (item->itemType()) {
    case MusicLibraryItem::Type_Root:
        return filterAcceptsRoot(item);
    case MusicLibraryItem::Type_Artist:
        return filterAcceptsArtist(item);
    case MusicLibraryItem::Type_Podcast:
    case MusicLibraryItem::Type_Album:
        return filterAcceptsAlbum(item);
    case MusicLibraryItem::Type_Song:
        return filterAcceptsSong(item);
    default:
        break;
    }

    return false;
}

示例#4

文件： dynamicproxymodel.cpp 项目： polpo/cantata-mac

bool DynamicProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    if (!filterEnabled) {
        return true;
    }
    if (!isChildOfRoot(sourceParent)) {
        return true;
    }
    if (matchesFilter(QStringList() << sourceModel()->data(sourceModel()->index(sourceRow, 0, sourceParent), Qt::DisplayRole).toString())) {
        return true;
    }

    Dynamic::Entry item = Dynamic::self()->entry(sourceRow);
    foreach (const Dynamic::Rule & r, item.rules) {
        Dynamic::Rule::ConstIterator it=r.constBegin();
        Dynamic::Rule::ConstIterator end=r.constEnd();
        for (; it!=end; ++it) {
            if (matchesFilter(QStringList() << it.value())) {
                return true;
            }
        }
    }
    return false;
}

示例#5

文件： dirviewproxymodel.cpp 项目： polpo/cantata-mac

bool DirViewProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
    if (!filterEnabled) {
        return true;
    }
    if (!isChildOfRoot(sourceParent)) {
        return true;
    }

    const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    DirViewItem *item = static_cast<DirViewItem *>(index.internalPointer());
    QModelIndex idx=index.parent();
    QStringList strings;

    // Traverse back up tree, so we get parent strings...
    while (idx.isValid()) {
        DirViewItem *i = static_cast<DirViewItem *>(idx.internalPointer());
        if (DirViewItem::Type_Dir!=i->type()) {
            break;
        }
        strings << i->data();
        idx=idx.parent();
    }

    if (DirViewItem::Type_Dir==item->type()) {
        // Check *all* children...
        if (filterAcceptsDirViewItem(item, strings)) {
            return true;
        }
    } else {
        strings << item->data();
        return matchesFilter(strings);
    }

    return false;
}