Method ReceiveMessage

contents.go:431–487

(msg *Message)

}

func (cc *CheckboxContents) ReceiveMessage(msg *Message) {
	if msg.Type == MessageStacksUpdated {
		cc.ParentOf = cc.Card.Stack.Children()
	} else if msg.Type == MessageLinkCreated || msg.Type == MessageLinkDeleted || msg.Type == MessageContentSwitched {
		cc.Linked = []*Card{}

		isCycle := func(card *Card) bool {

			checked := map[*Card]bool{
				card: true,
			}
			toCheck := []*Card{}

			for _, link := range card.Links {
				if link.End != card {
					toCheck = append(toCheck, link.End)
				}
			}

			for len(toCheck) > 0 {

				top := toCheck[0]
				toCheck = toCheck[1:]

				if _, exists := checked[top]; !exists {

					checked[top] = true

					for _, link := range top.Links {

						if link.End != top {
							toCheck = append(toCheck, link.End)
						}

					}

				} else {
					return true
				}

			}

			return false

		}

		for _, link := range cc.Card.Links {

			if link.End != cc.Card && !isCycle(link.End) && link.End.Numberable() {
				cc.Linked = append(cc.Linked, link.End)
			}

		}
		// } else if msg.Type == MessageCardDeserialized {
		// 	cc.URLButtons.ScanText(cc.Card.Properties.Get("description").AsString())
	}
}