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package ansi
import (
"bytes"
"io"
"github.com/charmbracelet/x/ansi"
)
// BlockElement provides a render buffer for children of a block element.
// After all children have been rendered into it, it applies indentation and
// margins around them and writes everything to the parent rendering buffer.
type BlockElement struct {
Block *bytes.Buffer
Style StyleBlock
Margin bool
Newline bool
}
func (e *BlockElement) Render(w io.Writer, ctx RenderContext) error {
bs := ctx.blockStack
bs.Push(*e)
renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, e.Style.BlockPrefix)
renderText(bs.Current().Block, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, e.Style.Prefix)
return nil
}
func (e *BlockElement) Finish(w io.Writer, ctx RenderContext) error {
bs := ctx.blockStack
if e.Margin {
s := ansi.Wordwrap(
bs.Current().Block.String(),
int(bs.Width(ctx)),
" ,.;-+|",
)
mw := NewMarginWriter(ctx, w, bs.Current().Style)
if _, err := io.WriteString(mw, s); err != nil {
return err
}
if e.Newline {
if _, err := io.WriteString(mw, "\n"); err != nil {
return err
}
}
} else {
_, err := bs.Parent().Block.Write(bs.Current().Block.Bytes())
if err != nil {
return err
}
}
renderText(w, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, e.Style.Suffix)
renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, e.Style.BlockSuffix)
bs.Current().Block.Reset()
bs.Pop()
return nil
}
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