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Ladybird: Allow replacing underlying model of ModelTranslator

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MacDue 2022-12-18 00:49:28 +00:00 committed by Andrew Kaster
parent 419dea0996
commit 0313814d3b
Notes: sideshowbarker 2024-07-17 02:37:12 +09:00 
Author: https://github.com/MacDue
Commit: https://github.com/SerenityOS/serenity/commit/0313814d3b
Pull-request: https://github.com/SerenityOS/serenity/pull/16665
2 changed files with 15 additions and 6 deletions
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13
Ladybird/ModelTranslator.cpp
View file

@ -12,20 +12,19 @@
namespace Ladybird { namespace Ladybird {
ModelTranslator::ModelTranslator(NonnullRefPtr<GUI::Model> model)
: m_model(move(model))
{
}
ModelTranslator::~ModelTranslator() = default; ModelTranslator::~ModelTranslator() = default;
int ModelTranslator::columnCount(QModelIndex const& parent) const int ModelTranslator::columnCount(QModelIndex const& parent) const
{ {
if (!m_model)
return 0;
return m_model->column_count(to_gui(parent)); return m_model->column_count(to_gui(parent));
} }
int ModelTranslator::rowCount(QModelIndex const& parent) const int ModelTranslator::rowCount(QModelIndex const& parent) const
{ {
if (!m_model)
return 0;
return m_model->row_count(to_gui(parent)); return m_model->row_count(to_gui(parent));
} }
@ -47,6 +46,7 @@ static QVariant convert_variant(GUI::Variant const& value)
QVariant ModelTranslator::data(QModelIndex const& index, int role) const QVariant ModelTranslator::data(QModelIndex const& index, int role) const
{ {
VERIFY(m_model);
switch (role) { switch (role) {
case Qt::DisplayRole: case Qt::DisplayRole:
return convert_variant(m_model->data(to_gui(index), GUI::ModelRole::Display)); return convert_variant(m_model->data(to_gui(index), GUI::ModelRole::Display));
@ -59,11 +59,13 @@ QVariant ModelTranslator::data(QModelIndex const& index, int role) const
QModelIndex ModelTranslator::index(int row, int column, QModelIndex const& parent) const QModelIndex ModelTranslator::index(int row, int column, QModelIndex const& parent) const
{ {
VERIFY(m_model);
return to_qt(m_model->index(row, column, to_gui(parent))); return to_qt(m_model->index(row, column, to_gui(parent)));
} }
QModelIndex ModelTranslator::parent(QModelIndex const& index) const QModelIndex ModelTranslator::parent(QModelIndex const& index) const
{ {
VERIFY(m_model);
return to_qt(m_model->parent_index(to_gui(index))); return to_qt(m_model->parent_index(to_gui(index)));
} }
@ -76,6 +78,7 @@ QModelIndex ModelTranslator::to_qt(GUI::ModelIndex const& index) const
GUI::ModelIndex ModelTranslator::to_gui(QModelIndex const& index) const GUI::ModelIndex ModelTranslator::to_gui(QModelIndex const& index) const
{ {
VERIFY(m_model);
if (!index.isValid()) if (!index.isValid())
return {}; return {};
return m_model->unsafe_create_index(index.row(), index.column(), index.internalPointer()); return m_model->unsafe_create_index(index.row(), index.column(), index.internalPointer());

8
Ladybird/ModelTranslator.h
View file

@ -14,9 +14,15 @@ namespace Ladybird {
class ModelTranslator final : public QAbstractItemModel { class ModelTranslator final : public QAbstractItemModel {
Q_OBJECT Q_OBJECT
public: public:
explicit ModelTranslator(NonnullRefPtr<GUI::Model>);
virtual ~ModelTranslator() override; virtual ~ModelTranslator() override;
void set_underlying_model(RefPtr<GUI::Model> model)
{
beginResetModel();
m_model = model;
endResetModel();
}
virtual int columnCount(QModelIndex const& parent) const override; virtual int columnCount(QModelIndex const& parent) const override;
virtual int rowCount(QModelIndex const& parent) const override; virtual int rowCount(QModelIndex const& parent) const override;
virtual QVariant data(QModelIndex const&, int role) const override; virtual QVariant data(QModelIndex const&, int role) const override;