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[calamares] Add reload() to update model after underlying data

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This commit is contained in:
Adriaan de Groot 2019-08-09 07:40:23 -04:00
parent 2a3ab4dbe7
commit 2bd03ad3c0
2 changed files with 21 additions and 6 deletions
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16
src/calamares/VariantModel.cpp
View file

@ -70,15 +70,21 @@ findNth( const VariantModel::IndexVector& skiplist, quintptr value, int n )
VariantModel::VariantModel( const QVariant* p )
: m_p( p )
{
int x = 0;
overallLength( *p, x, -1, nullptr );
m_rows.reserve( x );
x = 0;
overallLength( *p, x, -1, &m_rows );
reload();
}
VariantModel::~VariantModel() {}
void VariantModel::reload()
{
int x = 0;
overallLength( *m_p, x, -1, nullptr );
m_rows.clear(); // Start over
m_rows.reserve( x ); // We'll need this much
x = 0;
overallLength( *m_p, x, -1, &m_rows );
}
int
VariantModel::columnCount( const QModelIndex& index ) const
{

11
src/calamares/VariantModel.h
View file

@ -33,7 +33,9 @@
* VariantMap's data structure.
*
* Take care of object lifetimes and that the underlying
* QVariant does not change during use.
* QVariant does not change during use. If the QVariant
* **does** change, call reload() to re-build the internal
* representation of the tree.
*/
class VariantModel : public QAbstractItemModel
{
@ -56,6 +58,13 @@ public:
~VariantModel() override;
/** @brief Re-build the internal tree
*
* Call this when the underlying variant is changed, which
* might impact how the tree is laid out.
*/
void reload();
int columnCount( const QModelIndex& index ) const override;
int rowCount( const QModelIndex& index ) const override;