@ -134,9 +134,15 @@ type DropDown struct {
// The chars to show when the option's text gets shortened.
abbreviationChars string
// The symbol to draw at the end of the field .
// The symbol to draw at the end of the field when closed .
dropDownSymbol rune
// The symbol to draw at the end of the field when opened.
dropDownOpenSymbol rune
// A flag that determines whether the drop down symbol is always drawn.
alwaysDrawDropDownSymbol bool
sync . RWMutex
}
@ -144,7 +150,7 @@ type DropDown struct {
func NewDropDown ( ) * DropDown {
list := NewList ( )
list . ShowSecondaryText ( false )
list . SetMainTextColor ( Styles . PrimitiveBackground Color)
list . SetMainTextColor ( Styles . SecondaryText Color)
list . SetSelectedTextColor ( Styles . PrimitiveBackgroundColor )
list . SetSelectedBackgroundColor ( Styles . PrimaryTextColor )
list . SetHighlightFullLine ( true )
@ -159,6 +165,7 @@ func NewDropDown() *DropDown {
fieldTextColor : Styles . PrimaryTextColor ,
prefixTextColor : Styles . ContrastSecondaryTextColor ,
dropDownSymbol : Styles . DropDownSymbol ,
dropDownOpenSymbol : Styles . DropDownOpenSymbol ,
abbreviationChars : Styles . DropDownAbbreviationChars ,
labelColorFocused : ColorUnset ,
fieldBackgroundColorFocused : ColorUnset ,
@ -178,6 +185,22 @@ func (d *DropDown) SetDropDownSymbolRune(symbol rune) {
d . dropDownSymbol = symbol
}
// SetDropDownOpenSymbolRune sets the rune to be drawn at the end of the
// dropdown field to indicate that the a dropdown is open.
func ( d * DropDown ) SetDropDownOpenSymbolRune ( symbol rune ) {
d . Lock ( )
defer d . Unlock ( )
d . dropDownOpenSymbol = symbol
}
// SetAlwaysDrawDropDownSymbol sets a flad that determines whether the drop
// down symbol is always drawn. The symbol is normally only drawn when focused.
func ( d * DropDown ) SetAlwaysDrawDropDownSymbol ( alwaysDraw bool ) {
d . Lock ( )
defer d . Unlock ( )
d . alwaysDrawDropDownSymbol = alwaysDraw
}
// SetCurrentOption sets the index of the currently selected option. This may
// be a negative value to indicate that no option is currently selected. Calling
// this function will also trigger the "selected" callback (if there is one).
@ -594,7 +617,13 @@ func (d *DropDown) Draw(screen tcell.Screen) {
}
// Draw drop-down symbol
screen . SetContent ( x + fieldWidth - 2 , y , d . dropDownSymbol , nil , new ( tcell . Style ) . Foreground ( fieldTextColor ) . Background ( fieldBackgroundColor ) )
if d . alwaysDrawDropDownSymbol || d . _hasFocus ( ) {
symbol := d . dropDownSymbol
if d . open {
symbol = d . dropDownOpenSymbol
}
screen . SetContent ( x + fieldWidth - 2 , y , symbol , nil , new ( tcell . Style ) . Foreground ( fieldTextColor ) . Background ( fieldBackgroundColor ) )
}
// Draw options list.
if hasFocus && d . open {
@ -742,6 +771,10 @@ func (d *DropDown) HasFocus() bool {
d . RLock ( )
defer d . RUnlock ( )
return d . _hasFocus ( )
}
func ( d * DropDown ) _hasFocus ( ) bool {
if d . open {
return d . list . HasFocus ( )
}
