Hilbish/readline/info.go

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1.4 KiB
Go
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package readline
import "regexp"
// SetInfoText - a nasty function to force writing a new info text. It does not update helpers, it just renders
// them, so the info will survive until the helpers (thus including the info) will be updated/recomputed.
func (rl *Instance) SetInfoText(s string) {
rl.infoText = []rune(s)
rl.renderHelpers()
}
func (rl *Instance) getInfoText() {
if !rl.modeAutoFind && !rl.modeTabFind {
// Return if no infos provided by the user/engine
if rl.InfoText == nil {
rl.resetInfoText()
return
}
// The info text also works with the virtual completion line system.
// This way, the info is also refreshed depending on what we are pointing
// at with our cursor.
rl.infoText = rl.InfoText(rl.getCompletionLine())
}
}
// writeInfoText - only writes the info text and computes its offsets.
func (rl *Instance) writeInfoText() {
if len(rl.infoText) == 0 {
rl.infoY = 0
return
}
width := GetTermWidth()
// Wraps the line, and counts the number of newlines in the string,
// adjusting the offset as well.
re := regexp.MustCompile(`\r?\n`)
newlines := re.Split(string(rl.infoText), -1)
offset := len(newlines)
wrapped, infoLen := WrapText(string(rl.infoText), width)
offset += infoLen
rl.infoY = offset
infoText := string(wrapped)
if len(infoText) > 0 {
print("\r" + rl.InfoFormatting + string(infoText) + seqReset)
}
}
func (rl *Instance) resetInfoText() {
rl.infoY = 0
rl.infoText = []rune{}
}