|
#include <Wt/WStandardItem>
|
|
#include <Wt/WStandardItemModel>
|
|
#include <Wt/WStringListModel>
|
|
#include <Wt/WTableView>
|
|
#include <Wt/WItemDelegate>
|
|
#include <Wt/WContainerWidget>
|
|
#include <Wt/WComboBox>
|
|
|
|
/*
|
|
* This delegate demonstrates how to override the editing behaviour of a
|
|
* table cell.
|
|
*
|
|
* It takes a list of possible items on construction and, when edited, saves
|
|
* the selected item from the list to the Wt::DisplayRole in the model for
|
|
* Wt::WItemDelegate to render.
|
|
* It also saves the items index for future editing (rather than each time
|
|
* searching the item in the list). This is done using the general purpose
|
|
* Wt::UserRole in the model.
|
|
*/
|
|
class ComboDelegate : public Wt::WItemDelegate {
|
|
public:
|
|
ComboDelegate(Wt::WAbstractItemModel* items)
|
|
: items_(items)
|
|
{ }
|
|
|
|
void setModelData(const boost::any &editState, Wt::WAbstractItemModel* model,
|
|
const Wt::WModelIndex &index) const
|
|
{
|
|
int stringIdx = (int)Wt::asNumber(editState);
|
|
model->setData(index, stringIdx, Wt::UserRole);
|
|
model->setData(index, items_->data(stringIdx, 0), Wt::DisplayRole);
|
|
}
|
|
|
|
boost::any editState(Wt::WWidget* editor) const
|
|
{
|
|
Wt::WComboBox* combo = dynamic_cast<Wt::WComboBox*>
|
|
(dynamic_cast<Wt::WContainerWidget*>(editor)->widget(0));
|
|
return combo->currentIndex();
|
|
}
|
|
|
|
void setEditState(Wt::WWidget* editor, const boost::any &value) const
|
|
{
|
|
Wt::WComboBox* combo = dynamic_cast<Wt::WComboBox*>
|
|
(dynamic_cast<Wt::WContainerWidget*>(editor)->widget(0));
|
|
combo->setCurrentIndex((int)Wt::asNumber(value));
|
|
}
|
|
|
|
protected:
|
|
virtual Wt::WWidget* createEditor(const Wt::WModelIndex &index,
|
|
Wt::WFlags<Wt::ViewItemRenderFlag> flags) const
|
|
{
|
|
Wt::WContainerWidget *const container = new Wt::WContainerWidget();
|
|
Wt::WComboBox* combo = new Wt::WComboBox(container);
|
|
combo->setNoSelectionEnabled(true); // added
|
|
combo->setModel(items_);
|
|
// combo->setCurrentIndex((int)Wt::asNumber(index.data(Wt::UserRole))); // commented
|
|
combo->setCurrentIndex(-1); // added
|
|
|
|
combo->changed().connect(boost::bind(&ComboDelegate::doCloseEditor, this,
|
|
container, true));
|
|
combo->enterPressed().connect(boost::bind(&ComboDelegate::doCloseEditor,
|
|
this, container, true));
|
|
combo->escapePressed().connect(boost::bind(&ComboDelegate::doCloseEditor,
|
|
this, container, false));
|
|
|
|
return container;
|
|
}
|
|
|
|
private:
|
|
Wt::WAbstractItemModel* items_;
|
|
|
|
void doCloseEditor(Wt::WWidget *editor, bool save) const
|
|
{
|
|
closeEditor().emit(editor, save);
|
|
}
|
|
};
|
|
|
|
SAMPLE_BEGIN(ComboDelegateTable)
|
|
|
|
Wt::WTableView *table = new Wt::WTableView();
|
|
|
|
// create model
|
|
std::vector<Wt::WString> options;
|
|
options.push_back("apples");
|
|
options.push_back("pears");
|
|
options.push_back("bananas");
|
|
options.push_back("cherries");
|
|
options.push_back("peaches"); // added
|
|
|
|
Wt::WStandardItemModel *model = new Wt::WStandardItemModel(table);
|
|
for (unsigned i=0; i < 2; i++) {
|
|
for (unsigned j=0; j < 2; j++) {
|
|
Wt::WStandardItem *item = new Wt::WStandardItem();
|
|
item->setData(0, Wt::UserRole);
|
|
// item->setData(options[0], Wt::DisplayRole); // commented
|
|
item->setData("", Wt::DisplayRole); // added
|
|
item->setFlags(Wt::ItemIsEditable);
|
|
model->setItem(i, j, item);
|
|
}
|
|
}
|
|
|
|
// create table
|
|
table->setModel(model);
|
|
table->setEditTriggers(Wt::WAbstractItemView::SingleClicked);
|
|
Wt::WStringListModel* slModel = new Wt::WStringListModel(table);
|
|
slModel->setStringList(options);
|
|
ComboDelegate* customdelegate = new ComboDelegate(slModel);
|
|
table->setItemDelegate(customdelegate);
|
|
|
|
table->setSortingEnabled(false);
|
|
table->setColumnResizeEnabled(false);
|
|
table->setRowHeight(40);
|
|
table->setHeaderHeight(0);
|
|
|
|
const int WIDTH = 120;
|
|
for (int i = 0; i < table->model()->columnCount(); ++i)
|
|
table->setColumnWidth(i, WIDTH);
|
|
table->setWidth((WIDTH + 7) * table->model()->columnCount() + 2);
|
|
|
|
SAMPLE_END(return table)
|
