From 257affcd4841b8f595a4a13cdb0fd2a1a2dd0faa Mon Sep 17 00:00:00 2001 From: Drew DeVault Date: Sun, 13 Jan 2019 15:27:56 -0500 Subject: Revert "Add abstract list, update dirlist accordingly" This reverts commit 3157897c1a20e5638feaf56e753b7886bc4ba267. --- lib/ui/grid.go | 1 - lib/ui/list.go | 110 --------------------------------------------------------- 2 files changed, 111 deletions(-) delete mode 100644 lib/ui/list.go (limited to 'lib') diff --git a/lib/ui/grid.go b/lib/ui/grid.go index 5fe6ab2..3c375ee 100644 --- a/lib/ui/grid.go +++ b/lib/ui/grid.go @@ -5,7 +5,6 @@ import ( "math" ) -// A container which arranges its children on a grid. type Grid struct { rows []GridSpec rowLayout []gridLayout diff --git a/lib/ui/list.go b/lib/ui/list.go deleted file mode 100644 index 58f304f..0000000 --- a/lib/ui/list.go +++ /dev/null @@ -1,110 +0,0 @@ -package ui - -import ( - "fmt" -) - -// A container which arranges its children in a list. -type List struct { - Items []*ListItem - itemHeight int - onInvalidate func(d Drawable) - selected int -} - -type ListItem struct { - Content Drawable - invalid bool -} - -type SelectableDrawable interface { - Drawable - DrawWithSelected(ctx *Context, selected bool) -} - -func NewList() *List { - return &List{itemHeight: 1, selected: -1} -} - -func (list *List) OnInvalidate(onInvalidate func(d Drawable)) { - list.onInvalidate = onInvalidate -} - -func (list *List) Invalidate() { - for _, item := range list.Items { - item.Content.Invalidate() - } - if list.onInvalidate != nil { - list.onInvalidate(list) - } -} - -func (list *List) Draw(ctx *Context) { - for i, item := range list.Items { - if !item.invalid { - continue - } - subctx := ctx.Subcontext(0, i, ctx.Width(), list.itemHeight) - if content, ok := item.Content.(SelectableDrawable); ok { - content.DrawWithSelected(subctx, i == list.selected) - } else { - item.Content.Draw(subctx) - } - } -} - -func (list *List) Add(child Drawable) { - list.Items = append(list.Items, &ListItem{Content: child, invalid: true}) - child.OnInvalidate(list.childInvalidated) - list.Invalidate() -} - -func (list *List) Remove(child Drawable) { - for i, item := range list.Items { - if item.Content == child { - list.Items = append(list.Items[:i], list.Items[i+1:]...) - child.OnInvalidate(nil) - list.Invalidate() - return - } - } - panic(fmt.Errorf("Attempted to remove unknown child")) -} - -func (list *List) Set(items []Drawable) { - for _, item := range list.Items { - item.Content.OnInvalidate(nil) - } - list.Items = make([]*ListItem, len(items)) - for i, item := range items { - list.Items[i] = &ListItem{Content: item, invalid: true} - item.OnInvalidate(list.childInvalidated) - } - list.Invalidate() -} - -func (list *List) Select(index int) { - if index >= len(list.Items) || index < 0 { - panic(fmt.Errorf("Attempted to select unknown child")) - } - list.selected = index - list.Invalidate() -} - -func (list *List) ItemHeight(height int) { - list.itemHeight = height - list.Invalidate() -} - -func (list *List) childInvalidated(child Drawable) { - for _, item := range list.Items { - if item.Content == child { - item.invalid = true - if list.onInvalidate != nil { - list.onInvalidate(list) - } - return - } - } - panic(fmt.Errorf("Attempted to invalidate unknown child")) -} -- cgit 1.4.1-2-gfad0