diff options
Diffstat (limited to 'application/groupview/AccessibleGroupView.cpp')
| -rw-r--r-- | application/groupview/AccessibleGroupView.cpp | 774 |
1 files changed, 774 insertions, 0 deletions
diff --git a/application/groupview/AccessibleGroupView.cpp b/application/groupview/AccessibleGroupView.cpp new file mode 100644 index 00000000..9a1bb821 --- /dev/null +++ b/application/groupview/AccessibleGroupView.cpp @@ -0,0 +1,774 @@ +#include "GroupView.h" +#include "AccessibleGroupView.h" +#include "AccessibleGroupView_p.h" + +#include <qvariant.h> +#include <qaccessible.h> +#include <qheaderview.h> + +QAccessibleInterface *groupViewAccessibleFactory(const QString &classname, QObject *object) +{ + QAccessibleInterface *iface = 0; + if (!object || !object->isWidgetType()) + return iface; + + QWidget *widget = static_cast<QWidget*>(object); + + if (classname == QLatin1String("GroupView")) { + iface = new AccessibleGroupView((GroupView *)widget); + } + return iface; +} + + +QAbstractItemView *AccessibleGroupView::view() const +{ + return qobject_cast<QAbstractItemView*>(object()); +} + +int AccessibleGroupView::logicalIndex(const QModelIndex &index) const +{ + if (!view()->model() || !index.isValid()) + return -1; + return index.row() * (index.model()->columnCount()) + index.column(); +} + +AccessibleGroupView::AccessibleGroupView(QWidget *w) + : QAccessibleObject(w) +{ + Q_ASSERT(view()); +} + +bool AccessibleGroupView::isValid() const +{ + return view(); +} + +AccessibleGroupView::~AccessibleGroupView() +{ + for (QAccessible::Id id : childToId) { + QAccessible::deleteAccessibleInterface(id); + } +} + +QAccessibleInterface *AccessibleGroupView::cellAt(int row, int column) const +{ + if (!view()->model()) { + return 0; + } + + QModelIndex index = view()->model()->index(row, column, view()->rootIndex()); + if (Q_UNLIKELY(!index.isValid())) { + qWarning() << "AccessibleGroupView::cellAt: invalid index: " << index << " for " << view(); + return 0; + } + + return child(logicalIndex(index)); +} + +QAccessibleInterface *AccessibleGroupView::caption() const +{ + return 0; +} + +QString AccessibleGroupView::columnDescription(int column) const +{ + if (!view()->model()) + return QString(); + + return view()->model()->headerData(column, Qt::Horizontal).toString(); +} + +int AccessibleGroupView::columnCount() const +{ + if (!view()->model()) + return 0; + return 1; +} + +int AccessibleGroupView::rowCount() const +{ + if (!view()->model()) + return 0; + return view()->model()->rowCount(); +} + +int AccessibleGroupView::selectedCellCount() const +{ + if (!view()->selectionModel()) + return 0; + return view()->selectionModel()->selectedIndexes().count(); +} + +int AccessibleGroupView::selectedColumnCount() const +{ + if (!view()->selectionModel()) + return 0; + return view()->selectionModel()->selectedColumns().count(); +} + +int AccessibleGroupView::selectedRowCount() const +{ + if (!view()->selectionModel()) + return 0; + return view()->selectionModel()->selectedRows().count(); +} + +QString AccessibleGroupView::rowDescription(int row) const +{ + if (!view()->model()) + return QString(); + return view()->model()->headerData(row, Qt::Vertical).toString(); +} + +QList<QAccessibleInterface *> AccessibleGroupView::selectedCells() const +{ + QList<QAccessibleInterface*> cells; + if (!view()->selectionModel()) + return cells; + const QModelIndexList selectedIndexes = view()->selectionModel()->selectedIndexes(); + cells.reserve(selectedIndexes.size()); + for (const QModelIndex &index : selectedIndexes) + cells.append(child(logicalIndex(index))); + return cells; +} + +QList<int> AccessibleGroupView::selectedColumns() const +{ + if (!view()->selectionModel()) { + return QList<int>(); + } + + const QModelIndexList selectedColumns = view()->selectionModel()->selectedColumns(); + + QList<int> columns; + columns.reserve(selectedColumns.size()); + for (const QModelIndex &index : selectedColumns) { + columns.append(index.column()); + } + + return columns; +} + +QList<int> AccessibleGroupView::selectedRows() const +{ + if (!view()->selectionModel()) { + return QList<int>(); + } + + QList<int> rows; + + const QModelIndexList selectedRows = view()->selectionModel()->selectedRows(); + + rows.reserve(selectedRows.size()); + for (const QModelIndex &index : selectedRows) { + rows.append(index.row()); + } + + return rows; +} + +QAccessibleInterface *AccessibleGroupView::summary() const +{ + return 0; +} + +bool AccessibleGroupView::isColumnSelected(int column) const +{ + if (!view()->selectionModel()) { + return false; + } + + return view()->selectionModel()->isColumnSelected(column, QModelIndex()); +} + +bool AccessibleGroupView::isRowSelected(int row) const +{ + if (!view()->selectionModel()) { + return false; + } + + return view()->selectionModel()->isRowSelected(row, QModelIndex()); +} + +bool AccessibleGroupView::selectRow(int row) +{ + if (!view()->model() || !view()->selectionModel()) { + return false; + } + QModelIndex index = view()->model()->index(row, 0, view()->rootIndex()); + + if (!index.isValid() || view()->selectionBehavior() == QAbstractItemView::SelectColumns) { + return false; + } + + switch (view()->selectionMode()) { + case QAbstractItemView::NoSelection: { + return false; + } + case QAbstractItemView::SingleSelection: { + if (view()->selectionBehavior() != QAbstractItemView::SelectRows && columnCount() > 1 ) + return false; + view()->clearSelection(); + break; + } + case QAbstractItemView::ContiguousSelection: { + if ((!row || !view()->selectionModel()->isRowSelected(row - 1, view()->rootIndex())) && !view()->selectionModel()->isRowSelected(row + 1, view()->rootIndex())) { + view()->clearSelection(); + } + break; + } + default: { + break; + } + } + + view()->selectionModel()->select(index, QItemSelectionModel::Select | QItemSelectionModel::Rows); + return true; +} + +bool AccessibleGroupView::selectColumn(int column) +{ + if (!view()->model() || !view()->selectionModel()) { + return false; + } + QModelIndex index = view()->model()->index(0, column, view()->rootIndex()); + + if (!index.isValid() || view()->selectionBehavior() == QAbstractItemView::SelectRows) { + return false; + } + + switch (view()->selectionMode()) { + case QAbstractItemView::NoSelection: { + return false; + } + case QAbstractItemView::SingleSelection: { + if (view()->selectionBehavior() != QAbstractItemView::SelectColumns && rowCount() > 1) { + return false; + } + // fallthrough intentional + } + case QAbstractItemView::ContiguousSelection: { + if ((!column || !view()->selectionModel()->isColumnSelected(column - 1, view()->rootIndex())) && !view()->selectionModel()->isColumnSelected(column + 1, view()->rootIndex())) { + view()->clearSelection(); + } + break; + } + default: { + break; + } + } + + view()->selectionModel()->select(index, QItemSelectionModel::Select | QItemSelectionModel::Columns); + return true; +} + +bool AccessibleGroupView::unselectRow(int row) +{ + if (!view()->model() || !view()->selectionModel()) { + return false; + } + + QModelIndex index = view()->model()->index(row, 0, view()->rootIndex()); + if (!index.isValid()) { + return false; + } + + QItemSelection selection(index, index); + auto selectionModel = view()->selectionModel(); + + switch (view()->selectionMode()) { + case QAbstractItemView::SingleSelection: + // no unselect + if (selectedRowCount() == 1) { + return false; + } + break; + case QAbstractItemView::ContiguousSelection: { + // no unselect + if (selectedRowCount() == 1) { + return false; + } + + + if ((!row || selectionModel->isRowSelected(row - 1, view()->rootIndex())) && selectionModel->isRowSelected(row + 1, view()->rootIndex())) { + //If there are rows selected both up the current row and down the current rown, + //the ones which are down the current row will be deselected + selection = QItemSelection(index, view()->model()->index(rowCount() - 1, 0, view()->rootIndex())); + } + } + default: { + break; + } + } + + selectionModel->select(selection, QItemSelectionModel::Deselect | QItemSelectionModel::Rows); + return true; +} + +bool AccessibleGroupView::unselectColumn(int column) +{ + auto model = view()->model(); + if (!model || !view()->selectionModel()) { + return false; + } + + QModelIndex index = model->index(0, column, view()->rootIndex()); + if (!index.isValid()) { + return false; + } + + QItemSelection selection(index, index); + + switch (view()->selectionMode()) { + case QAbstractItemView::SingleSelection: { + //In SingleSelection and ContiguousSelection once an item + //is selected, there's no way for the user to unselect all items + if (selectedColumnCount() == 1) { + return false; + } + break; + } + case QAbstractItemView::ContiguousSelection: + if (selectedColumnCount() == 1) { + return false; + } + + if ((!column || view()->selectionModel()->isColumnSelected(column - 1, view()->rootIndex())) + && view()->selectionModel()->isColumnSelected(column + 1, view()->rootIndex())) { + //If there are columns selected both at the left of the current row and at the right + //of the current row, the ones which are at the right will be deselected + selection = QItemSelection(index, model->index(0, columnCount() - 1, view()->rootIndex())); + } + default: + break; + } + + view()->selectionModel()->select(selection, QItemSelectionModel::Deselect | QItemSelectionModel::Columns); + return true; +} + +QAccessible::Role AccessibleGroupView::role() const +{ + return QAccessible::List; +} + +QAccessible::State AccessibleGroupView::state() const +{ + return QAccessible::State(); +} + +QAccessibleInterface *AccessibleGroupView::childAt(int x, int y) const +{ + QPoint viewportOffset = view()->viewport()->mapTo(view(), QPoint(0,0)); + QPoint indexPosition = view()->mapFromGlobal(QPoint(x, y) - viewportOffset); + // FIXME: if indexPosition < 0 in one coordinate, return header + + QModelIndex index = view()->indexAt(indexPosition); + if (index.isValid()) { + return child(logicalIndex(index)); + } + return 0; +} + +int AccessibleGroupView::childCount() const +{ + if (!view()->model()) { + return 0; + } + return (view()->model()->rowCount()) * (view()->model()->columnCount()); +} + +int AccessibleGroupView::indexOfChild(const QAccessibleInterface *iface) const +{ + if (!view()->model()) + return -1; + QAccessibleInterface *parent = iface->parent(); + if (parent->object() != view()) + return -1; + + Q_ASSERT(iface->role() != QAccessible::TreeItem); // should be handled by tree class + if (iface->role() == QAccessible::Cell || iface->role() == QAccessible::ListItem) { + const AccessibleGroupViewItem* cell = static_cast<const AccessibleGroupViewItem*>(iface); + return logicalIndex(cell->m_index); + } else if (iface->role() == QAccessible::Pane) { + return 0; // corner button + } else { + qWarning() << "AccessibleGroupView::indexOfChild has a child with unknown role..." << iface->role() << iface->text(QAccessible::Name); + } + // FIXME: we are in denial of our children. this should stop. + return -1; +} + +QString AccessibleGroupView::text(QAccessible::Text t) const +{ + if (t == QAccessible::Description) + return view()->accessibleDescription(); + return view()->accessibleName(); +} + +QRect AccessibleGroupView::rect() const +{ + if (!view()->isVisible()) + return QRect(); + QPoint pos = view()->mapToGlobal(QPoint(0, 0)); + return QRect(pos.x(), pos.y(), view()->width(), view()->height()); +} + +QAccessibleInterface *AccessibleGroupView::parent() const +{ + if (view() && view()->parent()) { + if (qstrcmp("QComboBoxPrivateContainer", view()->parent()->metaObject()->className()) == 0) { + return QAccessible::queryAccessibleInterface(view()->parent()->parent()); + } + return QAccessible::queryAccessibleInterface(view()->parent()); + } + return 0; +} + +QAccessibleInterface *AccessibleGroupView::child(int logicalIndex) const +{ + if (!view()->model()) + return 0; + + auto id = childToId.constFind(logicalIndex); + if (id != childToId.constEnd()) + return QAccessible::accessibleInterface(id.value()); + + int columns = view()->model()->columnCount(); + + int row = logicalIndex / columns; + int column = logicalIndex % columns; + + QAccessibleInterface *iface = 0; + + QModelIndex index = view()->model()->index(row, column, view()->rootIndex()); + if (Q_UNLIKELY(!index.isValid())) { + qWarning("AccessibleGroupView::child: Invalid index at: %d %d", row, column); + return 0; + } + iface = new AccessibleGroupViewItem(view(), index); + + QAccessible::registerAccessibleInterface(iface); + childToId.insert(logicalIndex, QAccessible::uniqueId(iface)); + return iface; +} + +void *AccessibleGroupView::interface_cast(QAccessible::InterfaceType t) +{ + if (t == QAccessible::TableInterface) + return static_cast<QAccessibleTableInterface*>(this); + return 0; +} + +void AccessibleGroupView::modelChange(QAccessibleTableModelChangeEvent *event) +{ + // if there is no cache yet, we don't update anything + if (childToId.isEmpty()) + return; + + switch (event->modelChangeType()) { + case QAccessibleTableModelChangeEvent::ModelReset: + for (QAccessible::Id id : childToId) + QAccessible::deleteAccessibleInterface(id); + childToId.clear(); + break; + + // rows are inserted: move every row after that + case QAccessibleTableModelChangeEvent::RowsInserted: + case QAccessibleTableModelChangeEvent::ColumnsInserted: { + + ChildCache newCache; + ChildCache::ConstIterator iter = childToId.constBegin(); + + while (iter != childToId.constEnd()) { + QAccessible::Id id = iter.value(); + QAccessibleInterface *iface = QAccessible::accessibleInterface(id); + Q_ASSERT(iface); + if (indexOfChild(iface) >= 0) { + newCache.insert(indexOfChild(iface), id); + } else { + // ### This should really not happen, + // but it might if the view has a root index set. + // This needs to be fixed. + QAccessible::deleteAccessibleInterface(id); + } + ++iter; + } + childToId = newCache; + break; + } + + case QAccessibleTableModelChangeEvent::ColumnsRemoved: + case QAccessibleTableModelChangeEvent::RowsRemoved: { + ChildCache newCache; + ChildCache::ConstIterator iter = childToId.constBegin(); + while (iter != childToId.constEnd()) { + QAccessible::Id id = iter.value(); + QAccessibleInterface *iface = QAccessible::accessibleInterface(id); + Q_ASSERT(iface); + if (iface->role() == QAccessible::Cell || iface->role() == QAccessible::ListItem) { + Q_ASSERT(iface->tableCellInterface()); + AccessibleGroupViewItem *cell = static_cast<AccessibleGroupViewItem*>(iface->tableCellInterface()); + // Since it is a QPersistentModelIndex, we only need to check if it is valid + if (cell->m_index.isValid()) + newCache.insert(indexOfChild(cell), id); + else + QAccessible::deleteAccessibleInterface(id); + } + ++iter; + } + childToId = newCache; + break; + } + + case QAccessibleTableModelChangeEvent::DataChanged: + // nothing to do in this case + break; + } +} + +// TABLE CELL + +AccessibleGroupViewItem::AccessibleGroupViewItem(QAbstractItemView *view_, const QModelIndex &index_) + : view(view_), m_index(index_) +{ + if (Q_UNLIKELY(!index_.isValid())) + qWarning() << "AccessibleGroupViewItem::AccessibleGroupViewItem with invalid index: " << index_; +} + +void *AccessibleGroupViewItem::interface_cast(QAccessible::InterfaceType t) +{ + if (t == QAccessible::TableCellInterface) + return static_cast<QAccessibleTableCellInterface*>(this); + if (t == QAccessible::ActionInterface) + return static_cast<QAccessibleActionInterface*>(this); + return 0; +} + +int AccessibleGroupViewItem::columnExtent() const { return 1; } +int AccessibleGroupViewItem::rowExtent() const { return 1; } + +QList<QAccessibleInterface*> AccessibleGroupViewItem::rowHeaderCells() const +{ + return {}; +} + +QList<QAccessibleInterface*> AccessibleGroupViewItem::columnHeaderCells() const +{ + return {}; +} + +int AccessibleGroupViewItem::columnIndex() const +{ + if (!isValid()) { + return -1; + } + + return m_index.column(); +} + +int AccessibleGroupViewItem::rowIndex() const +{ + if (!isValid()) { + return -1; + } + + return m_index.row(); +} + +bool AccessibleGroupViewItem::isSelected() const +{ + if (!isValid()) { + return false; + } + + return view->selectionModel()->isSelected(m_index); +} + +QStringList AccessibleGroupViewItem::actionNames() const +{ + QStringList names; + names << toggleAction(); + return names; +} + +void AccessibleGroupViewItem::doAction(const QString& actionName) +{ + if (actionName == toggleAction()) { + if (isSelected()) { + unselectCell(); + } + else { + selectCell(); + } + } +} + +QStringList AccessibleGroupViewItem::keyBindingsForAction(const QString &) const +{ + return QStringList(); +} + + +void AccessibleGroupViewItem::selectCell() +{ + if (!isValid()) { + return; + } + QAbstractItemView::SelectionMode selectionMode = view->selectionMode(); + if (selectionMode == QAbstractItemView::NoSelection) { + return; + } + + Q_ASSERT(table()); + QAccessibleTableInterface *cellTable = table()->tableInterface(); + + switch (view->selectionBehavior()) { + case QAbstractItemView::SelectItems: + break; + case QAbstractItemView::SelectColumns: + if (cellTable) + cellTable->selectColumn(m_index.column()); + return; + case QAbstractItemView::SelectRows: + if (cellTable) + cellTable->selectRow(m_index.row()); + return; + } + + if (selectionMode == QAbstractItemView::SingleSelection) { + view->clearSelection(); + } + + view->selectionModel()->select(m_index, QItemSelectionModel::Select); +} + +void AccessibleGroupViewItem::unselectCell() +{ + if (!isValid()) + return; + QAbstractItemView::SelectionMode selectionMode = view->selectionMode(); + if (selectionMode == QAbstractItemView::NoSelection) + return; + + QAccessibleTableInterface *cellTable = table()->tableInterface(); + + switch (view->selectionBehavior()) { + case QAbstractItemView::SelectItems: + break; + case QAbstractItemView::SelectColumns: + if (cellTable) + cellTable->unselectColumn(m_index.column()); + return; + case QAbstractItemView::SelectRows: + if (cellTable) + cellTable->unselectRow(m_index.row()); + return; + } + + //If the mode is not MultiSelection or ExtendedSelection and only + //one cell is selected it cannot be unselected by the user + if ((selectionMode != QAbstractItemView::MultiSelection) && (selectionMode != QAbstractItemView::ExtendedSelection) && (view->selectionModel()->selectedIndexes().count() <= 1)) + return; + + view->selectionModel()->select(m_index, QItemSelectionModel::Deselect); +} + +QAccessibleInterface *AccessibleGroupViewItem::table() const +{ + return QAccessible::queryAccessibleInterface(view); +} + +QAccessible::Role AccessibleGroupViewItem::role() const +{ + return QAccessible::ListItem; +} + +QAccessible::State AccessibleGroupViewItem::state() const +{ + QAccessible::State st; + if (!isValid()) + return st; + + QRect globalRect = view->rect(); + globalRect.translate(view->mapToGlobal(QPoint(0,0))); + if (!globalRect.intersects(rect())) + st.invisible = true; + + if (view->selectionModel()->isSelected(m_index)) + st.selected = true; + if (view->selectionModel()->currentIndex() == m_index) + st.focused = true; + if (m_index.model()->data(m_index, Qt::CheckStateRole).toInt() == Qt::Checked) + st.checked = true; + + Qt::ItemFlags flags = m_index.flags(); + if (flags & Qt::ItemIsSelectable) { + st.selectable = true; + st.focusable = true; + if (view->selectionMode() == QAbstractItemView::MultiSelection) + st.multiSelectable = true; + if (view->selectionMode() == QAbstractItemView::ExtendedSelection) + st.extSelectable = true; + } + return st; +} + + +QRect AccessibleGroupViewItem::rect() const +{ + QRect r; + if (!isValid()) + return r; + r = view->visualRect(m_index); + + if (!r.isNull()) { + r.translate(view->viewport()->mapTo(view, QPoint(0,0))); + r.translate(view->mapToGlobal(QPoint(0, 0))); + } + return r; +} + +QString AccessibleGroupViewItem::text(QAccessible::Text t) const +{ + QString value; + if (!isValid()) + return value; + QAbstractItemModel *model = view->model(); + switch (t) { + case QAccessible::Name: + value = model->data(m_index, Qt::AccessibleTextRole).toString(); + if (value.isEmpty()) + value = model->data(m_index, Qt::DisplayRole).toString(); + break; + case QAccessible::Description: + value = model->data(m_index, Qt::AccessibleDescriptionRole).toString(); + break; + default: + break; + } + return value; +} + +void AccessibleGroupViewItem::setText(QAccessible::Text /*t*/, const QString &text) +{ + if (!isValid() || !(m_index.flags() & Qt::ItemIsEditable)) + return; + view->model()->setData(m_index, text); +} + +bool AccessibleGroupViewItem::isValid() const +{ + return view && view->model() && m_index.isValid(); +} + +QAccessibleInterface *AccessibleGroupViewItem::parent() const +{ + return QAccessible::queryAccessibleInterface(view); +} + +QAccessibleInterface *AccessibleGroupViewItem::child(int) const +{ + return 0; +} |