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/*
* Copyright 2008 Jason A. Donenfeld <Jason@zx2c4.com>
*/
#include "CollectionFilter.h"
#include "CollectionModel.h"
#include <QStringList>
#include <QDebug>
CollectionFilter::CollectionFilter(QObject *parent, CollectionModel *parentModel)
: QSortFilterProxyModel(parent)
, m_parent(parentModel)
, m_selected(-1)
{
setSourceModel(parentModel);
}
bool CollectionFilter::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
{
if(m_filter.isEmpty())
return true;
QString artist = sourceModel()->data(sourceModel()->index(sourceRow, 1, sourceParent)).toString();
QString album = sourceModel()->data(sourceModel()->index(sourceRow, 2, sourceParent)).toString();
QString title = sourceModel()->data(sourceModel()->index(sourceRow, 3, sourceParent)).toString();
bool keep = true;
foreach(QString word, m_filter.split(' ')) {
keep &= artist.contains(word, Qt::CaseInsensitive) || album.contains(word, Qt::CaseInsensitive) || title.contains(word, Qt::CaseInsensitive);
}
return keep;
}
void CollectionFilter::setFilter(QString filter)
{
if(filter != m_filter)
{
m_filter = filter;
QModelIndex currentSelected = currentItem();
invalidateFilter();
if(currentSelected.isValid())
m_selected = mapFromSource(currentSelected).row();
emit filterChanged();
}
}
QModelIndex CollectionFilter::peekNext() const
{
if(m_selected + 1 >= rowCount() || rowCount() == 0)
return QModelIndex();
return mapToSource(index(m_selected + 1, 0));
}
QModelIndex CollectionFilter::moveNext()
{
QModelIndex next = peekNext();
setCurrentItem(next);
return next;
}
QModelIndex CollectionFilter::peekPrevious() const
{
if(m_selected <= 0 || rowCount() == 0)
return QModelIndex();
return mapToSource(index(m_selected - 1, 0));
}
QModelIndex CollectionFilter::movePrevious()
{
QModelIndex previous = peekPrevious();
setCurrentItem(previous);
return previous;
}
QModelIndex CollectionFilter::currentItem() const
{
if(m_parent->position() >= 0)
return m_parent->index(m_parent->position(), 0);
return QModelIndex();
}
void CollectionFilter::setCurrentItem(const QModelIndex& item)
{
if(!item.isValid()) {
m_parent->setPosition(-1);
m_selected = -1;
return;
}
if(m_selected >= 0)
emit(dataChanged(index(m_selected, 0), index(m_selected, 3)));
if(item.model() == this) {
m_selected = item.row();
m_parent->setPosition(mapToSource(item).row());
} else if(item.model() == m_parent) {
m_selected = mapFromSource(item).row();
m_parent->setPosition(item.row());
}
emit(dataChanged(index(m_selected, 0), index(m_selected, 3)));
}
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