diff options
Diffstat (limited to 'src/qtgroupingproxy.cpp')
| -rw-r--r-- | src/qtgroupingproxy.cpp | 187 |
1 files changed, 155 insertions, 32 deletions
diff --git a/src/qtgroupingproxy.cpp b/src/qtgroupingproxy.cpp index 95a4aad0..4e066f65 100644 --- a/src/qtgroupingproxy.cpp +++ b/src/qtgroupingproxy.cpp @@ -14,7 +14,7 @@ * this program. If not, see <http://www.gnu.org/licenses/>. *
****************************************************************************************/
-// Modifications 2013-03-27 to 2013-03-28 by Sebastian Herbord
+// Modifications 2013-03-27 to 2013-03-29 by Sebastian Herbord
#include "QtGroupingProxy.h"
@@ -31,11 +31,12 @@ \ingroup model-view
*/
-QtGroupingProxy::QtGroupingProxy(QAbstractItemModel *model, QModelIndex rootNode, int groupedColumn, Qt::ItemDataRole groupedRole, unsigned int flags )
+QtGroupingProxy::QtGroupingProxy(QAbstractItemModel *model, QModelIndex rootNode, int groupedColumn, int groupedRole, unsigned int flags , int aggregateRole)
: QAbstractProxyModel()
, m_rootNode( rootNode )
, m_groupedColumn( 0 )
, m_groupedRole( groupedRole )
+ , m_aggregateRole( aggregateRole )
, m_flags( flags )
{
setSourceModel( model );
@@ -104,7 +105,7 @@ QtGroupingProxy::belongsTo( const QModelIndex &idx ) i.next();
int role = i.key();
QVariant variant = i.value();
- qDebug() << "role " << role << " : (" << variant.typeName() << ") : "<< variant;
+ // qDebug() << "role " << role << " : (" << variant.typeName() << ") : "<< variant;
if ( variant.type() == QVariant::List )
{
//a list of variants get's expanded to multiple rows
@@ -171,7 +172,32 @@ QtGroupingProxy::buildTree() //dumpGroups();
if (m_flags & FLAG_NOSINGLE) {
+ // awkward: flatten single-item groups as a post-processing steps.
+ int currentKey = 0;
+ quint32 quint32max = std::numeric_limits<quint32>::max();
+ std::vector<int> rmgroups;
+
+ QHash<quint32, QList<int> > temp;
+
+ for (auto iter = m_groupHash.begin(); iter != m_groupHash.end(); ++iter) {
+ if ((iter.key() == quint32max) ||
+ (iter->count() == 1)) {
+ temp[quint32max].append(iter.value());
+ if (iter.key() != quint32max) {
+ rmgroups.push_back(iter.key());
+ }
+ } else {
+ temp[currentKey++] = *iter;
+ }
+ }
+ m_groupHash = temp;
+
+ // second loop is necessary because qt containers can't be iterated from end to
+ // removing by index from begin to end is ugly
+ for (auto iter = rmgroups.rbegin(); iter != rmgroups.rend(); ++iter) {
+ m_groupMaps.removeAt(*iter);
+ }
}
endResetModel();
@@ -191,6 +217,7 @@ QtGroupingProxy::addSourceRow( const QModelIndex &idx ) QList<int> updatedGroups;
QList<RowData> groupData = belongsTo( idx );
+
//an empty list here means it's supposed to go in root.
if( groupData.isEmpty() )
{
@@ -346,7 +373,6 @@ QtGroupingProxy::rowCount( const QModelIndex &index ) const if( !index.isValid() )
{
//the number of top level groups + the number of non-grouped items
- qDebug("groups: %d - ungrouped: %d", m_groupMaps.count(), m_groupHash.value(std::numeric_limits<quint32>::max()).count());
int rows = m_groupMaps.count() + m_groupHash.value( std::numeric_limits<quint32>::max() ).count();
//qDebug() << rows << " in root group";
return rows;
@@ -359,12 +385,12 @@ QtGroupingProxy::rowCount( const QModelIndex &index ) const int rows = m_groupHash.value( groupIndex ).count();
//qDebug() << rows << " in group " << m_groupMaps[groupIndex];
return rows;
+ } else {
+ QModelIndex originalIndex = mapToSource( index );
+ int rowCount = sourceModel()->rowCount( originalIndex );
+ //qDebug() << "original item: rowCount == " << rowCount;
+ return rowCount;
}
-
- QModelIndex originalIndex = mapToSource( index );
- int rowCount = sourceModel()->rowCount( originalIndex );
- //qDebug() << "original item: rowCount == " << rowCount;
- return rowCount;
}
int
@@ -379,6 +405,44 @@ QtGroupingProxy::columnCount( const QModelIndex &index ) const return sourceModel()->columnCount( mapToSource( index ) );
}
+
+static bool variantLess(const QVariant &LHS, const QVariant &RHS)
+{
+ if ((LHS.type() == RHS.type()) &&
+ ((LHS.type() == QVariant::Int) || (LHS.type() == QVariant::UInt))) {
+ return LHS.toInt() < RHS.toInt();
+ }
+
+ // this should always work (comparing empty strings in the worst case) but
+ // the results may be wrong
+ return LHS.toString() < RHS.toString();
+}
+
+
+static QVariant variantMax(const QVariantList &variants)
+{
+ QVariant result = variants.first();
+ foreach (const QVariant &iter, variants) {
+ if (variantLess(result, iter)) {
+ result = iter;
+ }
+ }
+ return result;
+}
+
+
+static QVariant variantMin(const QVariantList &variants)
+{
+ QVariant result = variants.first();
+ foreach (const QVariant &iter, variants) {
+ if (variantLess(iter, result)) {
+ result = iter;
+ }
+ }
+ return result;
+}
+
+
QVariant
QtGroupingProxy::data( const QModelIndex &index, int role ) const
{
@@ -389,18 +453,8 @@ QtGroupingProxy::data( const QModelIndex &index, int role ) const int column = index.column();
if( isGroup( index ) )
{
- if (column != 0) return QVariant();
-
- //qDebug() << __FUNCTION__ << "is a group";
- //use cached or precalculated data
- if( m_groupMaps[row][column].contains( Qt::DisplayRole ) )
- {
- //qDebug() << "Using cached data";
+ if ((role != Qt::DisplayRole) && (role != Qt::EditRole)) {
switch (role) {
- case Qt::DisplayRole: {
- QString value = m_groupMaps[row][column].value( role ).toString();
- return QString("----- %1 -----").arg(value.isEmpty() ? tr("<unset>") : value);
- } break;
case Qt::ForegroundRole: {
return QBrush(Qt::gray);
} break;
@@ -415,13 +469,47 @@ QtGroupingProxy::data( const QModelIndex &index, int role ) const case Qt::UserRole: {
return m_groupMaps[row][column].value( Qt::DisplayRole ).toString();
} break;
+ case Qt::CheckStateRole: {
+ if (column != 0) return QVariant();
+ int childCount = m_groupHash.value( row ).count();
+ int checked = 0;
+ QModelIndex parentIndex = this->index( row, 0, index.parent() );
+ for( int childRow = 0; childRow < childCount; ++childRow )
+ {
+ QModelIndex childIndex = this->index( childRow, 0, parentIndex );
+ QVariant data = mapToSource( childIndex ).data( Qt::CheckStateRole );
+ if (data.toInt() == 2) ++checked;
+ }
+ if (checked == childCount) return Qt::Checked;
+ else if (checked == 0) return Qt::Unchecked;
+ else return Qt::PartiallyChecked;
+ } break;
default: {
- return QVariant();
+ QModelIndex parentIndex = this->index( row, 0, index.parent() );
+ if (m_groupHash.value( row ).count() > 0) {
+ return this->index(0, 0, parentIndex).data(role);
+ } else {
+ return QVariant();
+ }
// return m_groupMaps[row][column].value( role );
} break;
}
}
+ //qDebug() << __FUNCTION__ << "is a group";
+ //use cached or precalculated data
+ if( m_groupMaps[row][column].contains( Qt::DisplayRole ) )
+ {
+ // qDebug() << "Using cached data for " << row << "x" << column << ": " << m_groupMaps[row][column].value(Qt::DisplayRole).toString();
+ if ((m_flags & FLAG_NOGROUPNAME) != 0) {
+ QModelIndex parentIndex = this->index( row, 0, index.parent() );
+ QModelIndex childIndex = this->index( 0, column, parentIndex );
+ return childIndex.data(role).toString();
+ } else {
+ return m_groupMaps[row][column].value( role ).toString();
+ }
+ }
+
//for column 0 we gather data from the grouped column instead
if( column == 0 )
column = m_groupedColumn;
@@ -432,6 +520,13 @@ QtGroupingProxy::data( const QModelIndex &index, int role ) const if( childCount == 0 )
return QVariant();
+ int function = AGGR_NONE;
+ if (m_aggregateRole >= Qt::UserRole) {
+ QModelIndex parentIndex = this->index( row, 0, index.parent() );
+ QModelIndex childIndex = this->index( 0, column, parentIndex );
+ function = mapToSource(childIndex).data(m_aggregateRole).toInt();
+ }
+
//qDebug() << __FUNCTION__ << "childCount: " << childCount;
//Need a parentIndex with column == 0 because only those have children.
QModelIndex parentIndex = this->index( row, 0, index.parent() );
@@ -448,19 +543,29 @@ QtGroupingProxy::data( const QModelIndex &index, int role ) const ItemData roleMap = m_groupMaps[row].value( column );
foreach( const QVariant &variant, variantsOfChildren )
{
- if( roleMap[ role ] != variant )
+ if( roleMap[ role ] != variant ) {
roleMap.insert( role, variantsOfChildren );
+ }
}
//qDebug() << QString("roleMap[%1]:").arg(role) << roleMap[role];
- //only one unique variant? No need to return a list
- if( variantsOfChildren.count() == 1 )
- return variantsOfChildren.first();
if( variantsOfChildren.count() == 0 )
return QVariant();
- return variantsOfChildren;
+ //only one unique variant? No need to return a list
+ switch (function) {
+ case AGGR_EMPTY: return QVariant();
+ case AGGR_FIRST: return variantsOfChildren.first();
+ case AGGR_MAX: return variantMax(variantsOfChildren);
+ case AGGR_MIN: return variantMin(variantsOfChildren);
+ default: {
+ if( variantsOfChildren.count() == 1 )
+ return variantsOfChildren.first();
+
+ return variantsOfChildren;
+ } break;
+ }
}
return mapToSource( index ).data( role );
@@ -612,7 +717,7 @@ QtGroupingProxy::mapFromSource( const QModelIndex &idx ) const //qDebug() << "proxyParent: " << proxyParent;
//qDebug() << "proxyRow: " << proxyRow;
- return this->index( proxyRow, 0, proxyParent );
+ return this->index( proxyRow, idx.column(), proxyParent );
}
Qt::ItemFlags
@@ -632,10 +737,28 @@ QtGroupingProxy::flags( const QModelIndex &idx ) const if( isGroup( idx ) )
{
// dumpGroups();
- // Qt::ItemFlags defaultFlags( Qt::ItemIsEnabled | Qt::ItemIsSelectable );
- Qt::ItemFlags defaultFlags(Qt::NoItemFlags);
+ Qt::ItemFlags defaultFlags( Qt::ItemIsEnabled | Qt::ItemIsSelectable );
+ //Qt::ItemFlags defaultFlags(Qt::ItemIsEnabled);
bool groupIsEditable = true;
+ if (idx.column() == 0) {
+ bool checkable = true;
+ foreach ( int originalRow, m_groupHash.value( idx.row() ) )
+ {
+ QModelIndex originalIdx = sourceModel()->index( originalRow, 0,
+ m_rootNode.parent() );
+ if ( (originalIdx.flags() & Qt::ItemIsUserCheckable) == 0 )
+ {
+ qDebug("row %d is not checkable", originalRow);
+ checkable = false;
+ }
+ }
+
+ if ( checkable ) {
+ defaultFlags |= Qt::ItemIsUserCheckable;
+ }
+ }
+
//it's possible to have empty groups
if( m_groupHash.value( idx.row() ).count() == 0 )
{
@@ -658,7 +781,6 @@ QtGroupingProxy::flags( const QModelIndex &idx ) const break;
}
}
-
if( groupIsEditable )
return ( defaultFlags | Qt::ItemIsEditable | Qt::ItemIsDropEnabled );
return defaultFlags;
@@ -671,9 +793,9 @@ QtGroupingProxy::flags( const QModelIndex &idx ) const QModelIndex groupedColumnIndex =
sourceModel()->index( originalIdx.row(), m_groupedColumn, originalIdx.parent() );
bool groupIsEditable = sourceModel()->flags( groupedColumnIndex ).testFlag( Qt::ItemIsEditable );
+
if( groupIsEditable )
return originalItemFlags | Qt::ItemIsDragEnabled;
-
return originalItemFlags;
}
@@ -736,8 +858,9 @@ QtGroupingProxy::hasChildren( const QModelIndex &parent ) const if( !parent.isValid() )
return true;
- if( isGroup( parent ) )
+ if( isGroup( parent ) ) {
return !m_groupHash.value( parent.row() ).isEmpty();
+ }
return sourceModel()->hasChildren( mapToSource( parent ) );
}
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