#include <juce_TreeView.h>

Public Member Functions
	OpennessRestorer (TreeViewItem &)
	~OpennessRestorer ()

Private Attributes
TreeViewItem &	treeViewItem
std::unique_ptr< XmlElement >	oldOpenness

Detailed Description

This handy class takes a copy of a TreeViewItem's openness when you create it, and restores that openness state when its destructor is called.

This can very handy when you're refreshing sub-items - e.g.

void MyTreeViewItem::updateChildItems()
{
    OpennessRestorer openness (*this);  //  saves the openness state here..
 
    clearSubItems();
 
    // add a bunch of sub-items here which may or may not be the same as the ones that
    // were previously there
    addSubItem (...
 
    // ..and at this point, the old openness is restored, so any items that haven't
    // changed will have their old openness retained.
}

Constructor & Destructor Documentation

◆ OpennessRestorer()

juce::TreeViewItem::OpennessRestorer::OpennessRestorer ( TreeViewItem & item )

◆ ~OpennessRestorer()

juce::TreeViewItem::OpennessRestorer::~OpennessRestorer ( )

Member Data Documentation

◆ oldOpenness

std::unique_ptr<XmlElement> juce::TreeViewItem::OpennessRestorer::oldOpenness

private

◆ treeViewItem

TreeViewItem& juce::TreeViewItem::OpennessRestorer::treeViewItem