92 lines
2.8 KiB
C++
Executable File
92 lines
2.8 KiB
C++
Executable File
#include "core/feedsproxymodel.h"
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#include "core/defs.h"
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#include "core/feedsmodel.h"
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#include "core/feedsmodelcategory.h"
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#include "core/feedsmodelfeed.h"
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#include "core/feedsmodelrootitem.h"
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FeedsProxyModel::FeedsProxyModel(QObject *parent)
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: QSortFilterProxyModel(parent) {
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m_sourceModel = new FeedsModel(this);
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setObjectName("FeedsProxyModel");
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setSortRole(Qt::EditRole);
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setSortCaseSensitivity(Qt::CaseInsensitive);
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setFilterCaseSensitivity(Qt::CaseInsensitive);
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setFilterKeyColumn(0);
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setFilterRole(Qt::EditRole);
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setDynamicSortFilter(true);
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setSourceModel(m_sourceModel);
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}
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FeedsProxyModel::~FeedsProxyModel() {
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qDebug("Destroying FeedsProxyModel instance");
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}
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bool FeedsProxyModel::lessThan(const QModelIndex &left,
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const QModelIndex &right) const {
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if (left.isValid() && right.isValid()) {
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// Make necessary castings.
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FeedsModelRootItem *left_item = m_sourceModel->itemForIndex(left);
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FeedsModelRootItem *right_item = m_sourceModel->itemForIndex(right);
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// NOTE: Here we want to accomplish that ALL
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// categories are queued one after another and all
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// feeds are queued one after another too.
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// Moreover, sort everything alphabetically or
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// by item counts, depending on the sort column.
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if (left_item->kind() == right_item->kind()) {
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// Both items are feeds or both items are categories.
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if (left.column() == FDS_MODEL_COUNTS_INDEX) {
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// User wants to sort according to counts.
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return left_item->countOfUnreadMessages() < right_item->countOfUnreadMessages();
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}
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else {
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// In other cases, sort by title.
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// TODO: mozna pouzit QString::localeAwareCompare tady.
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return QString::compare(left_item->title(),
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right_item->title()) < 0;
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}
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}
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else if (left_item->kind() == FeedsModelRootItem::Feed) {
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// Left item is feed, right item is category.
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return false;
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}
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else {
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// Left item is category, right item is feed.
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// NOTE: Category is in fact "more" than feed but
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// we consider it to be "less" because it should be "placed"
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// above the "smalles" feed when ascending sort is used.
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return true;
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}
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}
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else {
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return false;
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}
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}
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QModelIndexList FeedsProxyModel::mapListFromSource(const QModelIndexList &indexes) {
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QModelIndexList mapped_indexes;
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foreach (const QModelIndex &index, indexes) {
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mapped_indexes << mapFromSource(index);
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}
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return mapped_indexes;
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}
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QModelIndexList FeedsProxyModel::mapListToSource(const QModelIndexList &indexes) {
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QModelIndexList source_indexes;
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foreach (const QModelIndex &index, indexes) {
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source_indexes << mapToSource(index);
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}
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return source_indexes;
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}
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