float GetPreferredWidth(const BVariant& value, BView* targetView) const
{
// get the preferred width from the node's designated renderer
if (value.Type() == VALUE_NODE_TYPE) {
ModelNode* node = dynamic_cast<ModelNode*>(value.ToReferenceable());
if (node != NULL && node->GetValue() != NULL
&& node->TableCellRenderer() != NULL) {
return node->TableCellRenderer()->PreferredValueWidth(
node->GetValue(), targetView);
}
}
return fColumn.BTitledColumn::GetPreferredWidth(NULL, targetView);
}
void DrawValue(const BVariant& value, BRect rect, BView* targetView)
{
// draw the node's value with the designated renderer
if (value.Type() == VALUE_NODE_TYPE) {
ModelNode* node = dynamic_cast<ModelNode*>(value.ToReferenceable());
if (node != NULL && node->GetValue() != NULL
&& node->TableCellRenderer() != NULL) {
node->TableCellRenderer()->RenderValue(node->GetValue(), rect,
targetView);
return;
}
}
// fall back to drawing an empty string
fField.SetString("");
fField.SetWidth(Width());
fColumn.DrawField(&fField, rect, targetView);
}
void
VariablesView::TreeTableCellMouseDown(TreeTable* table,
const TreeTablePath& path, int32 columnIndex, BPoint screenWhere,
uint32 buttons)
{
if ((buttons & B_SECONDARY_MOUSE_BUTTON) == 0)
return;
_FinishContextMenu(true);
ModelNode* node = (ModelNode*)fVariableTableModel->NodeForPath(path);
if (node == NULL)
return;
TableCellValueRenderer* cellRenderer = node->TableCellRenderer();
if (cellRenderer == NULL)
return;
Settings* settings = cellRenderer->GetSettings();
if (settings == NULL)
return;
SettingsMenu* settingsMenu;
status_t error = node->GetValueHandler()->CreateTableCellValueSettingsMenu(
node->GetValue(), settings, settingsMenu);
BReference<SettingsMenu> settingsMenuReference(settingsMenu, true);
if (error != B_OK)
return;
TableCellContextMenuTracker* tracker = new(std::nothrow)
TableCellContextMenuTracker(node, Looper(), this);
BReference<TableCellContextMenuTracker> trackerReference(tracker);
if (tracker == NULL || tracker->Init(settings, settingsMenu) != B_OK)
return;
fTableCellContextMenuTracker = trackerReference.Detach();
fTableCellContextMenuTracker->ShowMenu(screenWhere);
}