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Working with Trees > Classes > TreeColumns

TreeColumns

Namespace: PP.Ui;

Inheritance hierarchy

Object

List

TreeColumns

Description

The TreeColumn class implements a collection of columns for the TreeList component.

Syntax

PP.initClass(PP.Ui.TreeColumns, PP.List, "TreeColumns");

Constructor

	Constructor name	Brief description
	TreeColumns	The TreeColumns constructor creates an instance of the TreeColumns class.

Methods inherited from the class List

	Method name	Brief description
	add	The add method adds an element to the collection.
	clear	The clear method removes all objects from the collection.
	contains	The contains method determines whether the collection includes the specified element.
	getCount	The getCount method returns the number of collection elements.
	getItem	The getItem method returns the collection element by the specified index.
	indexOf	The indexOf method returns index of the specified collection element.
	insert	The insert method inserts an element to the specified position.
	insertBefore	The insertBefore method inserts an element to the position before the specified element.
	remove	The remove method removes the specified element from the collection.
	setItem	The setItem method writes the element to the specified position in the collection.

Events inherited from the class List

	Event name	Brief description
	Changed	The Changed event occurs after changing collection state.
	Changing	The Changing event occurs on changing collection state.

Properties inherited from the class Object

	Property name	Brief description
	Id	The Id property determines a repository object identifier.

Methods inherited from the class Object

	Method name	Brief description
	clone	The clone method creates an object copy.
	dispose	The dispose method deletes the component.
	getHashCode	The getHashCode method returns hash code of repository object.
	getSettings	The getSettings method returns repository object settings.
	getTypeName	The getTypeName method returns the name of the object type without the namespace, to which it belongs.
	isEqual	The isEqual method determines whether the specified object is equal to the current repository object.
	isLive	The isLive method determines validity of repository object.
	removeAllEvents	The removeAllEvents method removes all object event handlers by the specified context.
	setSettings	The setSettings method determines repository object settings.
	defineProps	The defineProps method creates get and set methods from name array for the specified class.
	keys	The keys method returns array of methods and properties names for the specified object.

See also:

PP.Ui