void WItemDelegate::updateModelIndex(WWidget *widget, const WModelIndex& index)
{
WidgetRef w(widget);
if (index.flags() & ItemIsUserCheckable) {
IndexCheckBox *cb = checkBox(w, index, false, false);
if (cb)
cb->setIndex(index);
}
}
IndexCheckBox *WItemDelegate::checkBox(WidgetRef& w, const WModelIndex& index,
bool autoCreate, bool triState)
{
IndexCheckBox *checkBox = dynamic_cast<IndexCheckBox *>(w.w->find("c"));
if (!checkBox) {
if (autoCreate) {
IndexCheckBox * const result = checkBox = new IndexCheckBox(index);
checkBox->setObjectName("c");
checkBox->clicked().preventPropagation();
IndexContainerWidget *wc =
dynamic_cast<IndexContainerWidget *>(w.w->find("o"));
if (!wc) {
wc = new IndexContainerWidget(index);
wc->setObjectName("o");
w.w->setInline(true);
w.w->setStyleClass(WString::Empty);
/* We first remove to avoid reparenting warnings */
IndexContainerWidget *p =
dynamic_cast<IndexContainerWidget *>(w.w->parent());
if (p)
p->removeWidget(w.w);
wc->addWidget(w.w);
w.w = wc;
}
wc->insertWidget(0, checkBox);
checkBox->changed().connect
(boost::bind(&WItemDelegate::onCheckedChange, this, result));
} else
return 0;
}
checkBox->setTristate(triState);
return checkBox;
}
void WItemDelegate::updateModelIndex(WWidget *widget, const WModelIndex& index)
{
WidgetRef w(widget);
if (index.flags() & ItemIsUserCheckable) {
IndexCheckBox *cb = checkBox(w, index, false, false);
if (cb)
cb->setIndex(index);
}
if (index.flags() & ItemHasDeferredTooltip) {
IndexText *text = dynamic_cast<IndexText *>(widget);
if (text)
text->setIndex(index);
IndexAnchor *anchor = dynamic_cast<IndexAnchor *>(widget);
if (anchor)
anchor->setIndex(index);
IndexContainerWidget *c = dynamic_cast<IndexContainerWidget *>(widget);
if (c)
c->setIndex(index);
}
}
WWidget *WItemDelegate::update(WWidget *widget, const WModelIndex& index,
WFlags<ViewItemRenderFlag> flags)
{
bool editing = widget && widget->find("t") == 0;
if (flags & RenderEditing) {
if (!editing) {
widget = createEditor(index, flags);
WInteractWidget *iw = dynamic_cast<WInteractWidget *>(widget);
if (iw) {
// Disable drag & drop and selection behaviour
iw->mouseWentDown().preventPropagation();
iw->clicked().preventPropagation();
}
}
} else {
if (editing)
widget = 0;
}
WidgetRef widgetRef(widget);
bool isNew = false;
if (!(flags & RenderEditing)) {
if (!widgetRef.w) {
isNew = true;
IndexText *t = new IndexText(index);
t->setObjectName("t");
if (index.isValid() && !(index.flags() & ItemIsXHTMLText))
t->setTextFormat(PlainText);
t->setWordWrap(true);
widgetRef.w = t;
}
if (!index.isValid())
return widgetRef.w;
bool haveCheckBox = false;
boost::any checkedData = index.data(CheckStateRole);
if (!checkedData.empty()) {
haveCheckBox = true;
CheckState state =
(checkedData.type() == typeid(bool) ?
(boost::any_cast<bool>(checkedData) ? Checked : Unchecked)
: (checkedData.type() == typeid(CheckState) ?
boost::any_cast<CheckState>(checkedData) : Unchecked));
IndexCheckBox *icb =
checkBox(widgetRef, index, true, index.flags() & ItemIsTristate);
icb->setCheckState(state);
icb->setEnabled(index.flags() & ItemIsUserCheckable);
} else if (!isNew)
delete checkBox(widgetRef, index, false);
boost::any linkData = index.data(LinkRole);
if (!linkData.empty()) {
WLink link = boost::any_cast<WLink>(linkData);
IndexAnchor *a = anchorWidget(widgetRef, index);
a->setLink(link);
if (link.type() == WLink::Resource)
a->setTarget(TargetNewWindow);
}
IndexText *t = textWidget(widgetRef, index);
WString label = asString(index.data(), textFormat_);
if (label.empty() && haveCheckBox)
label = WString::fromUTF8(" ");
t->setText(label);
std::string iconUrl = asString(index.data(DecorationRole)).toUTF8();
if (!iconUrl.empty()) {
iconWidget(widgetRef, index, true)->setImageLink(WLink(iconUrl));
} else if (!isNew)
delete iconWidget(widgetRef, index, false);
}
if (index.flags() & ItemHasDeferredTooltip){
widgetRef.w->setDeferredToolTip(true, (index.flags() & ItemIsXHTMLText) ?
XHTMLText : PlainText);
} else {
WString tooltip = asString(index.data(ToolTipRole));
if (!tooltip.empty() || !isNew)
widgetRef.w->setToolTip(tooltip,
(index.flags() & ItemIsXHTMLText) ?
XHTMLText : PlainText);
}
WT_USTRING sc = asString(index.data(StyleClassRole));
if (flags & RenderSelected)
sc += WT_USTRING::fromUTF8
(" " + WApplication::instance()->theme()->activeClass());
if (flags & RenderEditing)
sc += WT_USTRING::fromUTF8(" Wt-delegate-edit");
widgetRef.w->setStyleClass(sc);
if (index.flags() & ItemIsDropEnabled)
widgetRef.w->setAttributeValue("drop", WString::fromUTF8("true"));
else
if (!widgetRef.w->attributeValue("drop").empty())
widgetRef.w->setAttributeValue("drop", WString::fromUTF8("f"));
return widgetRef.w;
}
