objects/abstractcontainer.go

94 lines
2.8 KiB
Go

package objects
import "image"
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/tomo/event"
type abstractContainer struct {
box tomo.ContainerBox
}
func (this *abstractContainer) init (layout tomo.Layout, children ...tomo.Object) {
this.box = tomo.NewContainerBox()
this.SetLayout(layout)
for _, child := range children {
this.Add(child)
}
}
// GetBox returns the underlying box.
func (this *abstractContainer) GetBox () tomo.Box {
return this.box
}
// ContentBounds returns the bounds of the inner content of the container
// relative to the container's InnerBounds.
func (this *abstractContainer) ContentBounds () image.Rectangle {
return this.box.ContentBounds()
}
// ScrollTo shifts the origin of the container's content to the origin of the
// container's InnerBounds, offset by the given point.
func (this *abstractContainer) ScrollTo (position image.Point) {
this.box.ScrollTo(position)
}
// OnContentBoundsChange specifies a function to be called when the container's
// ContentBounds or InnerBounds changes.
func (this *abstractContainer) OnContentBoundsChange (callback func ()) event.Cookie {
return this.box.OnContentBoundsChange(callback)
}
// SetLayout sets the layout of the container.
func (this *abstractContainer) SetLayout (layout tomo.Layout) {
if layout == nil {
this.box.UnsetAttr(tomo.AttrKindLayout)
} else {
this.box.SetAttr(tomo.ALayout(layout))
}
}
// SetAlign sets the X and Y alignment of the container.
func (this *abstractContainer) SetAlign (x, y tomo.Align) {
this.box.SetAttr(tomo.AAlign(x, y))
}
// SetOverflow sets the X and Y overflow of the container.
func (this *abstractContainer) SetOverflow (x, y bool) {
this.box.SetAttr(tomo.AOverflow(x, y))
}
// Add appends a child object. If the object is already a child of another
// object, it will be removed from that object first.
func (this *abstractContainer) Add (object tomo.Object) {
this.box.Add(object)
}
// Remove removes a child object, if it is a child of this container.
func (this *abstractContainer) Remove (object tomo.Object) {
this.box.Remove(object)
}
// Insert inserts a child object before a specified object. If the before object
// is nil or is not contained within this container, the inserted object is
// appended. If the inserted object is already a child of another object, it
// will be removed from that object first.
func (this *abstractContainer) Insert (child tomo.Object, before tomo.Object) {
this.box.Insert(child, before)
}
// Clear removes all child objects.
func (this *abstractContainer) Clear () {
this.box.Clear()
}
// Len returns hte amount of child objects.
func (this *abstractContainer) Len () int {
return this.box.Len()
}
// At returns the child object at the specified index.
func (this *abstractContainer) At (index int) tomo.Object {
return this.box.At(index)
}