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Code Issues 17 Pull Requests 1 Releases Activity

Selection bar in DropDown stretches entire width now. Also added SetTextOptions() with prefixes/suffixes etc. Resolves #289

merge-requests/1/merge
Oliver 2019-07-05 10:48:25 +01:00
parent 17ae691817
commit 95de965571
1 changed files with 54 additions and 11 deletions
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65
dropdown.go
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@ -22,10 +22,19 @@ type DropDown struct {
// The options from which the user can choose.
options []*dropDownOption
// Strings to be placed before and after each drop-down option.
optionPrefix, optionSuffix string
// The index of the currently selected option. Negative if no option is
// currently selected.
currentOption int
// Strings to be placed beefore and after the current option.
currentOptionPrefix, currentOptionSuffix string
// The text to be displayed when no option has yet been selected.
noSelection string
// Set to true if the options are visible and selectable.
open bool
@ -78,6 +87,7 @@ func NewDropDown() *DropDown {
list.SetMainTextColor(Styles.PrimitiveBackgroundColor).
SetSelectedTextColor(Styles.PrimitiveBackgroundColor).
SetSelectedBackgroundColor(Styles.PrimaryTextColor).
SetHighlightFullLine(true).
SetBackgroundColor(Styles.MoreContrastBackgroundColor)
d := &DropDown{
@ -128,6 +138,23 @@ func (d *DropDown) GetCurrentOption() (int, string) {
return d.currentOption, text
}
// SetTextOptions sets the text to be placed before and after each drop-down
// option (prefix/suffix), the text placed before and after the currently
// selected option (currentPrefix/currentSuffix) as well as the text to be
// displayed when no option is currently selected. Per default, all of these
// strings are empty.
func (d *DropDown) SetTextOptions(prefix, suffix, currentPrefix, currentSuffix, noSelection string) *DropDown {
d.currentOptionPrefix = currentPrefix
d.currentOptionSuffix = currentSuffix
d.noSelection = noSelection
d.optionPrefix = prefix
d.optionSuffix = suffix
for index := 0; index < d.list.GetItemCount(); index++ {
d.list.SetItemText(index, prefix+d.options[index].Text+suffix, "")
}
return d
}
// SetLabel sets the text to be displayed before the input area.
func (d *DropDown) SetLabel(label string) *DropDown {
d.label = label
@ -208,7 +235,7 @@ func (d *DropDown) GetFieldWidth() int {
// callback is called when this option was selected. It may be nil.
func (d *DropDown) AddOption(text string, selected func()) *DropDown {
d.options = append(d.options, &dropDownOption{Text: text, Selected: selected})
d.list.AddItem(text, "", 0, nil)
d.list.AddItem(d.optionPrefix+text+d.optionSuffix, "", 0, nil)
return d
}
@ -282,8 +309,9 @@ func (d *DropDown) Draw(screen tcell.Screen) {
// What's the longest option text?
maxWidth := 0
optionWrapWidth := TaggedStringWidth(d.optionPrefix + d.optionSuffix)
for _, option := range d.options {
strWidth := TaggedStringWidth(option.Text)
strWidth := TaggedStringWidth(option.Text) + optionWrapWidth
if strWidth > maxWidth {
maxWidth = strWidth
}
@ -293,6 +321,17 @@ func (d *DropDown) Draw(screen tcell.Screen) {
fieldWidth := d.fieldWidth
if fieldWidth == 0 {
fieldWidth = maxWidth
if d.currentOption < 0 {
noSelectionWidth := TaggedStringWidth(d.noSelection)
if noSelectionWidth > fieldWidth {
fieldWidth = noSelectionWidth
}
} else if d.currentOption < len(d.options) {
currentOptionWidth := TaggedStringWidth(d.currentOptionPrefix + d.options[d.currentOption].Text + d.currentOptionSuffix)
if currentOptionWidth > fieldWidth {
fieldWidth = currentOptionWidth
}
}
}
if rightLimit-x < fieldWidth {
fieldWidth = rightLimit - x
@ -308,21 +347,25 @@ func (d *DropDown) Draw(screen tcell.Screen) {
// Draw selected text.
if d.open && len(d.prefix) > 0 {
// Show the prefix.
Print(screen, d.prefix, x, y, fieldWidth, AlignLeft, d.prefixTextColor)
currentOptionPrefixWidth := TaggedStringWidth(d.currentOptionPrefix)
prefixWidth := stringWidth(d.prefix)
listItemText := d.options[d.list.GetCurrentItem()].Text
if prefixWidth < fieldWidth && len(d.prefix) < len(listItemText) {
Print(screen, listItemText[len(d.prefix):], x+prefixWidth, y, fieldWidth-prefixWidth, AlignLeft, d.fieldTextColor)
Print(screen, d.currentOptionPrefix, x, y, fieldWidth, AlignLeft, d.fieldTextColor)
Print(screen, d.prefix, x+currentOptionPrefixWidth, y, fieldWidth-currentOptionPrefixWidth, AlignLeft, d.prefixTextColor)
if len(d.prefix) < len(listItemText) {
Print(screen, listItemText[len(d.prefix):]+d.currentOptionSuffix, x+prefixWidth+currentOptionPrefixWidth, y, fieldWidth-prefixWidth-currentOptionPrefixWidth, AlignLeft, d.fieldTextColor)
}
} else {
color := d.fieldTextColor
text := d.noSelection
if d.currentOption >= 0 && d.currentOption < len(d.options) {
color := d.fieldTextColor
// Just show the current selection.
if d.GetFocusable().HasFocus() && !d.open {
color = d.fieldBackgroundColor
}
Print(screen, d.options[d.currentOption].Text, x, y, fieldWidth, AlignLeft, color)
text = d.currentOptionPrefix + d.options[d.currentOption].Text + d.currentOptionSuffix
}
// Just show the current selection.
if d.GetFocusable().HasFocus() && !d.open {
color = d.fieldBackgroundColor
}
Print(screen, text, x, y, fieldWidth, AlignLeft, color)
}
// Draw options list.