Hi List,
i am trying to edit an item shown in a WTableView over a WSelectionBox as
editor specified by a derived WItemDelegate.
My problem is that the WSelectionBox gets cut in height to the max height
of the underlaying cell.
I tryed specifying setOverflow(OverflowVisible) und setPopup(true) but then
the rows below are shining through the WSelectionBox and if i try to edit
the last entry in the list the editor is cut off.
Does someone know a solution?
Thanks and regards
Marco
#include <boost/cast.hpp>
#include <Wt/WApplication>
#include <Wt/WContainerWidget>
#include <Wt/WCompositeWidget>
#include <Wt/WStandardItemModel>
#include <Wt/WTableView>
#include <Wt/WVBoxLayout>
#include <Wt/WItemDelegate>
#include <Wt/WSelectionBox>
#include <vector>
#include <string>
class Playground : public Wt::WApplication {
public:
Playground (const Wt::WEnvironment& env);
static Wt::WApplication* CreateApplication (const Wt::WEnvironment& env)
{
return new Playground(env);
}
};
using namespace Wt;
int main (int argc, char **argv)
{
return WRun(argc, argv, &Playground::CreateApplication);
}
class ItemDelegate : public WItemDelegate {
void OnCloseEditor (Wt::WWidget* editor, bool save) const
{
closeEditor().emit(editor, save);
}
public:
ItemDelegate (WObject* parent = nullptr)
:WItemDelegate(parent)
{
}
WWidget* createEditor (const WModelIndex& index, WFlags<ViewItemRenderFlag>) const override
{
auto container = new Wt::WContainerWidget;
container->setOverflow(WContainerWidget::OverflowVisible);
container->setPopup(true);
auto cb = new WSelectionBox(container);
cb->addItem(WString("option 1"));
cb->addItem(WString("option 2"));
cb->addItem(WString("option 3"));
cb->setCurrentIndex(cb->findText(asString(index.data(EditRole))));
cb->activated().connect(std::bind(&ItemDelegate::OnCloseEditor, this, container, true));
cb->setFocus();
return container;
}
void setEditState (WWidget* editor, const boost::any& value) const override
{
auto container = boost::polymorphic_cast<WContainerWidget*>(editor);
auto cb = boost::polymorphic_cast<WSelectionBox*>(container->widget(0));
cb->setCurrentIndex(cb->findText(asString(value)));
}
boost::any editState (WWidget* editor) const override
{
auto container = boost::polymorphic_cast<WContainerWidget*>(editor);
auto cb = boost::polymorphic_cast<WSelectionBox*>(container->widget(0));
return cb->currentText();
}
};
Playground::Playground (const WEnvironment& env)
: WApplication(env)
{
auto layout = new WVBoxLayout(root());
root()->setLayout(layout);
auto table = new WTableView(root());
table->setEditTriggers(WTableView::SingleClicked);
table->setItemDelegateForColumn(1, new ItemDelegate(table));
table->setItemDelegateForColumn(2, new ItemDelegate(table));
layout->addWidget(table);
auto model = new WStandardItemModel(table);
for (size_t i = 0; i < 10; ++i) {
std::vector<WStandardItem*> row;
row.push_back(new WStandardItem(WString("foo")));
row.push_back(new WStandardItem(WString("option 1")));
row.push_back(new WStandardItem(WString("option 3")));
row[1]->setFlags(ItemIsEditable);
row[2]->setFlags(ItemIsEditable);
model->appendRow(row);
}
model->setHeaderData(0, WString("Some description"));
model->setHeaderData(1, WString("First"));
model->setHeaderData(2, WString("Second"));
table->setModel(model);
}
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