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authorJeffas <dev@jeffas.io>2020-05-30 21:27:27 +0100
committerReto Brunner <reto@labrat.space>2020-06-09 08:43:01 +0200
commit3877b1aa719569d3666bce227e351afcbc2628af (patch)
tree844dc66659aa7d9d649c5c2a6a2fbc41d943ff4a
parenta69399a138b46be45e0f6b1fd5bb89daea16e995 (diff)
downloadaerc-3877b1aa719569d3666bce227e351afcbc2628af.tar.gz
Add dirlist scrolling
Should fix #402
-rw-r--r--widgets/dirlist.go38
1 files changed, 35 insertions, 3 deletions
diff --git a/widgets/dirlist.go b/widgets/dirlist.go
index 600b38c0..418d2eaf 100644
--- a/widgets/dirlist.go
+++ b/widgets/dirlist.go
@@ -26,6 +26,7 @@ type DirectoryList struct {
logger *log.Logger
selecting string
selected string
+ scroll int
spinner *Spinner
worker *types.Worker
}
@@ -207,11 +208,17 @@ func (dirlist *DirectoryList) Draw(ctx *ui.Context) {
return
}
- row := 0
- for _, name := range dirlist.dirs {
+ dirlist.ensureScroll(ctx.Height())
+
+ for i, name := range dirlist.dirs {
+ if i < dirlist.scroll {
+ continue
+ }
+ row := i - dirlist.scroll
if row >= ctx.Height() {
break
}
+
style := tcell.StyleDefault
if name == dirlist.selected {
style = style.Reverse(true)
@@ -226,7 +233,32 @@ func (dirlist *DirectoryList) Draw(ctx *ui.Context) {
})
ctx.Printf(0, row, style, dirString)
- row++
+ }
+}
+
+func (dirlist *DirectoryList) ensureScroll(h int) {
+ selectingIdx := findString(dirlist.dirs, dirlist.selecting)
+
+ maxScroll := len(dirlist.dirs) - h
+ if maxScroll < 0 {
+ maxScroll = 0
+ }
+
+ if selectingIdx >= dirlist.scroll && selectingIdx < dirlist.scroll+h {
+ if dirlist.scroll > maxScroll {
+ dirlist.scroll = maxScroll
+ }
+ return
+ }
+
+ if selectingIdx >= dirlist.scroll+h {
+ dirlist.scroll = selectingIdx - h + 1
+ } else if selectingIdx < dirlist.scroll {
+ dirlist.scroll = selectingIdx
+ }
+
+ if dirlist.scroll > maxScroll {
+ dirlist.scroll = maxScroll
}
}