2023-01-10 01:34:19 +00:00
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package layouts
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import "git.tebibyte.media/sashakoshka/tomo"
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2023-01-10 16:51:46 +00:00
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import "git.tebibyte.media/sashakoshka/tomo/theme"
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// import "git.tebibyte.media/sashakoshka/tomo/artist"
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2023-01-10 02:25:11 +00:00
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import "git.tebibyte.media/sashakoshka/tomo/elements/core"
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2023-01-10 01:34:19 +00:00
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2023-01-10 16:51:46 +00:00
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type verticalEntry struct {
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y int
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minHeight int
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element tomo.Element
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}
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2023-01-10 01:34:19 +00:00
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// Vertical lays its children out vertically. It can contain any number of
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// children. When an child is added to the layout, it can either be set to
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// contract to its minimum height or expand to fill the remaining space (space
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// that is not taken up by other children or padding is divided equally among
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// these). Child elements will all have the same width.
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type Vertical struct {
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*core.Core
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core core.CoreControl
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gap, pad bool
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children []verticalEntry
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selectable bool
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}
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// NewVertical creates a new vertical layout. If gap is set to true, a gap will
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// be placed between each child element. If pad is set to true, padding will be
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// be placed around the inside of this element's border. Usually, you will want
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// these to be true.
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func NewVertical (gap, pad bool) (element *Vertical) {
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element = &Vertical { }
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element.Core, element.core = core.NewCore(element)
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element.gap = gap
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element.pad = pad
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element.recalculate()
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return
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}
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// SetPad sets whether or not padding will be placed around the inside of this
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// element's border.
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func (element *Vertical) SetPad (pad bool) {
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changed := element.pad != pad
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element.pad = pad
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if changed { element.recalculate() }
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}
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// SetGap sets whether or not a gap will be placed in between child elements.
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func (element *Vertical) SetGap (gap bool) {
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changed := element.gap != gap
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element.gap = gap
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if changed { element.recalculate() }
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}
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// Adopt adds a child element to the vertical layout. If expand is set to true,
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// the element will be expanded to fill a portion of the remaining space in the
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// layout.
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func (element *Vertical) Adopt (child tomo.Element, expand bool) {
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_, minHeight := child.MinimumSize()
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child.SetParentHooks (tomo.ParentHooks {
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// TODO
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})
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element.children = append (element.children, verticalEntry {
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element: child,
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minHeight: minHeight,
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})
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if child.Selectable() { element.core.SetSelectable(true) }
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element.recalculate()
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}
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// Disown removes the given child from the layout if it is contained within it.
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func (element *Vertical) Disown (child tomo.Element) {
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for index, entry := range element.children {
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if entry.element == child {
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entry.element.SetParentHooks(tomo.ParentHooks { })
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element.children = append (
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element.children[:index],
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element.children[index + 1:]...)
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break
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}
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}
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selectable := false
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for _, entry := range element.children {
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if entry.element.Selectable() { selectable = true }
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}
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element.core.SetSelectable(selectable)
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}
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// Children returns a slice containing this element's children.
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func (element *Vertical) Children () (children []tomo.Element) {
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children = make([]tomo.Element, len(element.children))
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for index, entry := range element.children {
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children[index] = entry.element
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}
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return
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}
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// CountChildren returns the amount of children contained within this element.
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func (element *Vertical) CountChildren () (count int) {
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return len(element.children)
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}
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// Child returns the child at the specified index. If the index is out of
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// bounds, this method will return nil.
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func (element *Vertical) Child (index int) (child tomo.Element) {
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if index < 0 || index > len(element.children) { return }
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return element.children[index].element
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}
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func (element *Vertical) Handle (event tomo.Event) {
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switch event.(type) {
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case tomo.EventResize:
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element.recalculate()
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// TODO:
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2023-01-10 01:34:19 +00:00
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2023-01-10 16:51:46 +00:00
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// TODO:
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}
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return
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}
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func (element *Vertical) AdvanceSelection (direction int) (ok bool) {
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// TODO:
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return
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}
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func (element *Vertical) recalculate () {
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var x, y int
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if element.pad {
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x += theme.Padding()
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y += theme.Padding()
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}
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// TODO
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2023-01-10 01:34:19 +00:00
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}
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