Expand

Expand provides expandable layout.

API

func Expand(c *tgframe.Container, title string, expanded bool, conf ...*ExpandConf) *tgframe.Container

• c is the container to add the expandable component to.
• title is the title of the expandable component.
• expanded is the initial expanded state of the expandable component.
• conf is an optional configuration, at most one.

// ExpandConf is the configuration for the Expand component.
type ExpandConf struct {
	tgframe.Base // ID
}

The client keeps whether an expander is open, so it claims an id derived from its title. Two expanders with the same title collide; give one of them a Conf.ID.

Example

	expand := tgcomp.Expand(p.Main, "Expand", true)
	tgcomp.Text(expand, "A expand!")

tgcomp.Expand(c, "Details", false, &tgcomp.ExpandConf{ID: "second_details"})

Rendering

The contents are built on the first open and then stay rendered, hidden while collapsed. An expander that was never opened costs nothing, and collapsing one that was opened keeps what it holds.