void WTreeNode::descendantRemoved(WTreeNode *node)
{
WTreeNode *parent = parentNode();
if (parent)
parent->descendantRemoved(node);
}
void WTreeNode::setChildCountPolicy(ChildCountPolicy policy)
{
if (policy != Disabled && !childCountLabel_) {
childCountLabel_ = new WText();
childCountLabel_->setMargin(WLength(7), Left);
childCountLabel_->setStyleClass("Wt-childcount");
labelArea()->addWidget(childCountLabel_);
}
childCountPolicy_ = policy;
if (childCountPolicy_ == Enabled) {
WTreeNode *parent = parentNode();
if (parent && parent->isExpanded())
if (doPopulate())
update();
}
if (childCountPolicy_ != Disabled) {
for (unsigned i = 0; i < childNodes_.size(); ++i)
childNodes_[i]->setChildCountPolicy(childCountPolicy_);
}
}
void WTreeNode::setChildCountPolicy(ChildCountPolicy policy)
{
if (policy != Disabled && !childCountLabel_) {
childCountLabel_ = new WText();
childCountLabel_->setMargin(WLength(7), Left);
// "treenodechildcount" is for backwards compatibility.
childCountLabel_->setStyleClass("Wt-childcount treenodechildcount");
layout_->elementAt(0, 1)->addWidget(childCountLabel_);
}
childCountPolicy_ = policy;
if (childCountPolicy_ == Enabled) {
WTreeNode *parent = parentNode();
if (parent && parent->isExpanded())
if (doPopulate())
update();
}
if (childCountPolicy_ != Disabled) {
for (unsigned i = 0; i < childNodes_.size(); ++i)
childNodes_[i]->setChildCountPolicy(childCountPolicy_);
}
}
void WTreeNode::setLoadPolicy(LoadPolicy loadPolicy)
{
loadPolicy_ = loadPolicy;
switch (loadPolicy) {
case PreLoading:
loadChildren();
break;
case NextLevelLoading:
if (isExpanded()) {
loadChildren();
loadGrandChildren();
} else {
WTreeNode *parent = parentNode();
if (parent && parent->isExpanded())
loadChildren();
expandIcon_
->icon1Clicked().connect(this, &WTreeNode::loadGrandChildren);
}
break;
case LazyLoading:
if (isExpanded())
loadChildren();
else {
if (childCountPolicy_ == Enabled) {
WTreeNode *parent = parentNode();
if (parent && parent->isExpanded())
doPopulate();
}
expandIcon_->icon1Clicked().connect(this, &WTreeNode::expand);
}
}
if (loadPolicy_ != LazyLoading) {
for (unsigned i = 0; i < childNodes_.size(); ++i)
childNodes_[i]->setLoadPolicy(loadPolicy_);
}
}
