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#include <Wt/WApplication>
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#include <Wt/WEnvironment>
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#include <Wt/WTreeView>
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#include <Wt/WStandardItem>
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#include <Wt/WStandardItemModel>
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#include <Wt/WItemDelegate>
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#include <Wt/WText>
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#include <Wt/WContainerWidget>
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#include <Wt/WLineEdit>
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#include <string>
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#include <iostream>
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#include <limits>
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#include <boost/bind.hpp>
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#include <boost/any.hpp>
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using namespace std;
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using namespace Wt;
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class MyDelegate: public Wt::WItemDelegate
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{
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public:
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MyDelegate(Wt::WObject *parent = 0) : WItemDelegate(parent) {};
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virtual ~MyDelegate(){};
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private:
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Wt::WWidget* createEditor(const Wt::WModelIndex& index, Wt::WFlags<Wt::ViewItemRenderFlag> flags) const;
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void Close(Wt::WWidget *editor, bool save) const;
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boost::any editState(Wt::WWidget *editor) const;
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};
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class cntWidget: public Wt::WText {
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public:
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cntWidget(Wt::WContainerWidget *parent = 0): Wt::WText(parent) {++cnt_; std::cout << "CNT widget = "<< cnt_<<std::endl;};
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~cntWidget(){--cnt_; std::cout << " CNT widget = "<< cnt_<< std::endl;};
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static int cnt_;
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};
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int cntWidget::cnt_=0;
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Wt::WWidget* MyDelegate::createEditor(const Wt::WModelIndex& index, Wt::WFlags<Wt::ViewItemRenderFlag> flags) const{
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// reimplement the default editor to add a validator
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Wt::WContainerWidget *editor = new Wt::WContainerWidget();
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Wt::WLineEdit *line = new Wt::WLineEdit();
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line->escapePressed().connect(boost::bind(&MyDelegate::Close, this, editor, false));
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line->blurred().connect(boost::bind(&MyDelegate::Close, this, editor, true));
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if (flags & RenderFocused) line->setFocus();
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editor ->addWidget(line);
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editor ->addWidget(new cntWidget());
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return editor ;
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}
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void MyDelegate::Close(Wt::WWidget *editor, bool save) const {
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closeEditor().emit(editor, save);
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cout << "closeEditor emitted" << endl;
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}
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boost::any MyDelegate::editState(Wt::WWidget *editor) const {
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Wt::WContainerWidget *w = dynamic_cast<Wt::WContainerWidget *>(editor);
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Wt::WLineEdit *lineEdit = dynamic_cast<Wt::WLineEdit *>(w->widget(0));
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return boost::any(lineEdit->text().narrow());
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}
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Wt::WApplication* createApp(const Wt::WEnvironment& env) {
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WApplication* app = new WApplication(env);
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app->setCssTheme("polished");
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Wt::WTreeView* tree = new WTreeView(app->root());
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WStandardItemModel* model = new WStandardItemModel(app->root());
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WStandardItem *item = new WStandardItem("na");
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item->setFlags(ItemIsEditable);
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model->setItem(0,1,item);
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item = new WStandardItem("name");
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item->setFlags(ItemIsEditable);
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model->setItem(0,0,item);
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item = new WStandardItem("num");
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item->setFlags(ItemIsEditable);
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model->setItem(1,0,item);
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item = new WStandardItem("3");
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item->setFlags(ItemIsEditable);
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model->setItem(1,1,item);
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tree->setModel(model);
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tree->setItemDelegateForColumn(0, new MyDelegate(app->root()));
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tree->setItemDelegateForColumn(1, new MyDelegate(app->root()));
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tree->setAlternatingRowColors(true);
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tree->setSelectionMode(SingleSelection);
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tree->setEditTriggers(WAbstractItemView::SingleClicked);
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tree->setHeight(200);
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return app;
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}
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int main(int argc, char** argv) {
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cout << WT_CLASS << endl;
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return WRun(argc,argv,&createApp);
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}
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