juce::TreeViewItem::OpennessRestorer Class Reference

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. More...

#include <juce_TreeView.h>

Collaboration diagram for juce::TreeViewItem::OpennessRestorer:

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

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

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 &

)

~OpennessRestorer()

juce::TreeViewItem::OpennessRestorer::~OpennessRestorer

(

)

Member Data Documentation

oldOpenness

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

private

treeViewItem

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

private

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The documentation for this class was generated from the following file:

• juce_TreeView.h