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Use a slice of runes as the underlying textinput value

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This commit is contained in:
Christian Rocha 2020-06-11 18:31:17 -04:00
parent 72fd4e3e3e
commit 74cc86fce5
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GPG Key ID: D6CC7A16E5878018
1 changed files with 17 additions and 16 deletions
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31
textinput/textinput.go
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@ -45,7 +45,7 @@ type Model struct {
Width int Width int
// Underlying text value // Underlying text value
value string value []rune
// Focus indicates whether user input focus should be on this input // Focus indicates whether user input focus should be on this input
// component. When false, don't blink and ignore keyboard input. // component. When false, don't blink and ignore keyboard input.
@ -64,10 +64,11 @@ type Model struct {
// SetValue sets the value of the text input. // SetValue sets the value of the text input.
func (m *Model) SetValue(s string) { func (m *Model) SetValue(s string) {
if m.CharLimit > 0 && len(s) > m.CharLimit { runes := []rune(s)
m.value = s[:m.CharLimit] if m.CharLimit > 0 && len(runes) > m.CharLimit {
m.value = runes[:m.CharLimit]
} else { } else {
m.value = s m.value = runes
} }
if m.pos > len(m.value) { if m.pos > len(m.value) {
m.pos = len(m.value) m.pos = len(m.value)
@ -77,7 +78,7 @@ func (m *Model) SetValue(s string) {
// Value returns the value of the text input. // Value returns the value of the text input.
func (m Model) Value() string { func (m Model) Value() string {
return m.value return string(m.value)
} }
// Cursor start moves the cursor to the given position. If the position is out // Cursor start moves the cursor to the given position. If the position is out
@ -118,7 +119,7 @@ func (m *Model) Blur() {
// Reset sets the input to its default state with no input. // Reset sets the input to its default state with no input.
func (m *Model) Reset() { func (m *Model) Reset() {
m.value = "" m.value = nil
m.offset = 0 m.offset = 0
m.pos = 0 m.pos = 0
m.blink = false m.blink = false
@ -166,7 +167,7 @@ func (m *Model) wordLeft() {
i := m.pos - 1 i := m.pos - 1
for i >= 0 { for i >= 0 {
if unicode.IsSpace(rune(m.value[i])) { if unicode.IsSpace(m.value[i]) {
m.pos-- m.pos--
i-- i--
} else { } else {
@ -175,7 +176,7 @@ func (m *Model) wordLeft() {
} }
for i >= 0 { for i >= 0 {
if !unicode.IsSpace(rune(m.value[i])) { if !unicode.IsSpace(m.value[i]) {
m.pos-- m.pos--
i-- i--
} else { } else {
@ -224,7 +225,7 @@ func NewModel() Model {
CursorColor: "", CursorColor: "",
CharLimit: 0, CharLimit: 0,
value: "", value: nil,
focus: false, focus: false,
blink: true, blink: true,
pos: 0, pos: 0,
@ -245,7 +246,7 @@ func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
fallthrough fallthrough
case tea.KeyDelete: case tea.KeyDelete:
if len(m.value) > 0 { if len(m.value) > 0 {
m.value = m.value[:m.pos-1] + m.value[m.pos:] m.value = append(m.value[:m.pos-1], m.value[m.pos:]...)
m.pos-- m.pos--
} }
case tea.KeyLeft: case tea.KeyLeft:
@ -272,7 +273,7 @@ func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
m.CursorStart() m.CursorStart()
case tea.KeyCtrlD: // ^D, delete char under cursor case tea.KeyCtrlD: // ^D, delete char under cursor
if len(m.value) > 0 && m.pos < len(m.value) { if len(m.value) > 0 && m.pos < len(m.value) {
m.value = m.value[:m.pos] + m.value[m.pos+1:] m.value = append(m.value[:m.pos], m.value[m.pos+1:]...)
} }
case tea.KeyCtrlE: // ^E, go to end case tea.KeyCtrlE: // ^E, go to end
m.CursorEnd() m.CursorEnd()
@ -298,7 +299,7 @@ func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
// Input a regular character // Input a regular character
if m.CharLimit <= 0 || len(m.value) < m.CharLimit { if m.CharLimit <= 0 || len(m.value) < m.CharLimit {
m.value = m.value[:m.pos] + string(msg.Rune) + m.value[m.pos:] m.value = append(m.value[:m.pos], append([]rune{msg.Rune}, m.value[m.pos:]...)...)
m.pos++ m.pos++
} }
} }
@ -324,7 +325,7 @@ func View(model tea.Model) string {
} }
// Placeholder text // Placeholder text
if m.value == "" && m.Placeholder != "" { if m.value == nil && m.Placeholder != "" {
return placeholderView(m) return placeholderView(m)
} }
@ -338,11 +339,11 @@ func View(model tea.Model) string {
value := m.value[left:right] value := m.value[left:right]
pos := m.pos - m.offset pos := m.pos - m.offset
v := m.colorText(value[:pos]) v := m.colorText(string(value[:pos]))
if pos < len(value) { if pos < len(value) {
v += cursorView(string(value[pos]), m) // cursor and text under it v += cursorView(string(value[pos]), m) // cursor and text under it
v += m.colorText(value[pos+1:]) // text after cursor v += m.colorText(string(value[pos+1:])) // text after cursor
} else { } else {
v += cursorView(" ", m) v += cursorView(" ", m)
} }