void WTemplate::updateDom(DomElement& element, bool all) { if (changed_ || all) { std::set<WWidget *> previouslyRendered; std::vector<WWidget *> newlyRendered; for (WidgetMap::const_iterator i = widgets_.begin(); i != widgets_.end(); ++i) { WWidget *w = i->second; if (w->isRendered() && w->webWidget()->domCanBeSaved()) { previouslyRendered.insert(w); } } bool saveWidgets = element.mode() == DomElement::ModeUpdate; previouslyRendered_ = saveWidgets ? &previouslyRendered : 0; newlyRendered_ = &newlyRendered; std::stringstream html; renderTemplate(html); previouslyRendered_ = 0; newlyRendered_ = 0; for (unsigned i = 0; i < newlyRendered.size(); ++i) { WWidget *w = newlyRendered[i]; if (previouslyRendered.find(w) != previouslyRendered.end()) { if (saveWidgets) element.saveChild(w->id()); previouslyRendered.erase(w); } } element.setProperty(Wt::PropertyInnerHTML, html.str()); changed_ = false; for (std::set<WWidget *>::const_iterator i = previouslyRendered.begin(); i != previouslyRendered.end(); ++i) { WWidget *w = *i; w->webWidget()->setRendered(false); } } WInteractWidget::updateDom(element, all); }
void WTemplate::updateDom(DomElement& element, bool all) { if (changed_ || all) { std::set<WWidget *> previouslyRendered; std::vector<WWidget *> newlyRendered; for (WidgetMap::const_iterator i = widgets_.begin(); i != widgets_.end(); ++i) { WWidget *w = i->second; if (w->isRendered() && w->webWidget()->domCanBeSaved()) { previouslyRendered.insert(w); } } bool saveWidgets = element.mode() == DomElement::ModeUpdate; previouslyRendered_ = saveWidgets ? &previouslyRendered : 0; newlyRendered_ = &newlyRendered; std::stringstream html; renderTemplate(html); previouslyRendered_ = 0; newlyRendered_ = 0; for (unsigned i = 0; i < newlyRendered.size(); ++i) { WWidget *w = newlyRendered[i]; if (previouslyRendered.find(w) != previouslyRendered.end()) { if (saveWidgets) element.saveChild(w->id()); previouslyRendered.erase(w); } } if (encodeTemplateText_) element.setProperty(Wt::PropertyInnerHTML, html.str()); else element.setProperty(Wt::PropertyInnerHTML, encode(html.str())); changed_ = false; for (std::set<WWidget *>::const_iterator i = previouslyRendered.begin(); i != previouslyRendered.end(); ++i) { WWidget *w = *i; // it could be that the widget was removed/deleted in the mean time // as a side-effect of rendering some of the widgets; thus we check // that the widget is still a child for (WidgetMap::const_iterator j = widgets_.begin(); j != widgets_.end(); ++j) { if (j->second == w) { w->webWidget()->setRendered(false); break; } } } WApplication::instance()->session()->renderer() .updateFormObjects(this, true); } WInteractWidget::updateDom(element, all); }