driver

Documentation

Index

• func WalkCompleteObjectTree(obj fyne.CanvasObject, ...) bool
• func WalkVisibleObjectTree(obj fyne.CanvasObject, ...) bool

Functions

func WalkCompleteObjectTree

func WalkCompleteObjectTree(
	obj fyne.CanvasObject,
	beforeChildren func(fyne.CanvasObject, fyne.Position, fyne.Position, fyne.Size) bool,
	afterChildren func(fyne.CanvasObject, fyne.CanvasObject),
) bool

WalkCompleteObjectTree will walk an object tree for all objects (ignoring visible state) executing the passed functions following the following rules: - beforeChildren is called for the start obj before traversing its children - the obj's children are traversed by calling walkObjects on each of the items - afterChildren is called for the obj after traversing the obj's children The walk can be aborted by returning true in one of the functions:

• if beforeChildren returns true, further traversing is stopped immediately, the after function will not be called for the obj where the walk stopped, however, it will be called for all its parents

func WalkVisibleObjectTree

func WalkVisibleObjectTree(
	obj fyne.CanvasObject,
	beforeChildren func(fyne.CanvasObject, fyne.Position, fyne.Position, fyne.Size) bool,
	afterChildren func(fyne.CanvasObject, fyne.CanvasObject),
) bool

WalkVisibleObjectTree will walk an object tree for all visible objects executing the passed functions following the following rules: - beforeChildren is called for the start obj before traversing its children - the obj's children are traversed by calling walkObjects on each of the visible items - afterChildren is called for the obj after traversing the obj's children The walk can be aborted by returning true in one of the functions:

• if beforeChildren returns true, further traversing is stopped immediately, the after function will not be called for the obj where the walk stopped, however, it will be called for all its parents