diff options
author | Drew DeVault <sir@cmpwn.com> | 2018-02-26 22:54:39 -0500 |
---|---|---|
committer | Drew DeVault <sir@cmpwn.com> | 2018-02-26 22:54:39 -0500 |
commit | 1418e1b9dc41d8f69bccb8de0fe0f1fb6835ce11 (patch) | |
tree | 4ae8b3373fdadb6dd3e7b8c8789cf938522b8f8a /ui/exline.go | |
parent | 661e3ec2a4dd97d4a8a8eab4f281b088770a6af2 (diff) |
Split UI library and widgets
Diffstat (limited to 'ui/exline.go')
-rw-r--r-- | ui/exline.go | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/ui/exline.go b/ui/exline.go deleted file mode 100644 index a377cd7..0000000 --- a/ui/exline.go +++ /dev/null @@ -1,127 +0,0 @@ -package ui - -import ( - tb "github.com/nsf/termbox-go" -) - -// TODO: history -// TODO: tab completion -// TODO: commit -// TODO: cancel (via esc/ctrl+c) -// TODO: scrolling - -type ExLine struct { - command *string - commit func(cmd *string) - index int - scroll int - - onInvalidate func(d Drawable) -} - -func NewExLine() *ExLine { - cmd := "" - return &ExLine{command: &cmd} -} - -func (ex *ExLine) OnInvalidate(onInvalidate func(d Drawable)) { - ex.onInvalidate = onInvalidate -} - -func (ex *ExLine) Invalidate() { - if ex.onInvalidate != nil { - ex.onInvalidate(ex) - } -} - -func (ex *ExLine) Draw(ctx *Context) { - cell := tb.Cell{ - Fg: tb.ColorDefault, - Bg: tb.ColorDefault, - Ch: ' ', - } - ctx.Fill(0, 0, ctx.Width(), ctx.Height(), cell) - ctx.Printf(0, 0, cell, ":%s", *ex.command) - tb.SetCursor(ctx.X()+ex.index-ex.scroll+1, ctx.Y()) -} - -func (ex *ExLine) insert(ch rune) { - newCmd := (*ex.command)[:ex.index] + string(ch) + (*ex.command)[ex.index:] - ex.command = &newCmd - ex.index++ - ex.Invalidate() -} - -func (ex *ExLine) deleteWord() { - // TODO: Break on any of / " ' - if len(*ex.command) == 0 { - return - } - i := ex.index - 1 - if (*ex.command)[i] == ' ' { - i-- - } - for ; i >= 0; i-- { - if (*ex.command)[i] == ' ' { - break - } - } - newCmd := (*ex.command)[:i+1] + (*ex.command)[ex.index:] - ex.command = &newCmd - ex.index = i + 1 - ex.Invalidate() -} - -func (ex *ExLine) deleteChar() { - if len(*ex.command) > 0 && ex.index != len(*ex.command) { - newCmd := (*ex.command)[:ex.index] + (*ex.command)[ex.index+1:] - ex.command = &newCmd - ex.Invalidate() - } -} - -func (ex *ExLine) backspace() { - if len(*ex.command) > 0 && ex.index != 0 { - newCmd := (*ex.command)[:ex.index-1] + (*ex.command)[ex.index:] - ex.command = &newCmd - ex.index-- - ex.Invalidate() - } -} - -func (ex *ExLine) Event(event tb.Event) bool { - switch event.Type { - case tb.EventKey: - switch event.Key { - case tb.KeySpace: - ex.insert(' ') - case tb.KeyBackspace, tb.KeyBackspace2: - ex.backspace() - case tb.KeyCtrlD, tb.KeyDelete: - ex.deleteChar() - case tb.KeyCtrlB, tb.KeyArrowLeft: - if ex.index > 0 { - ex.index-- - ex.Invalidate() - } - case tb.KeyCtrlF, tb.KeyArrowRight: - if ex.index < len(*ex.command) { - ex.index++ - ex.Invalidate() - } - case tb.KeyCtrlA, tb.KeyHome: - ex.index = 0 - ex.Invalidate() - case tb.KeyCtrlE, tb.KeyEnd: - ex.index = len(*ex.command) - ex.Invalidate() - case tb.KeyCtrlW: - ex.deleteWord() - default: - if event.Ch != 0 { - ex.insert(event.Ch) - } - } - } - return true -} |