261 lines
6.7 KiB
Go
261 lines
6.7 KiB
Go
package termboxUtil
|
|
|
|
import "github.com/nsf/termbox-go"
|
|
|
|
// InputField is a field for inputting text
|
|
type InputField struct {
|
|
id string
|
|
value string
|
|
x, y, width, height int
|
|
cursor int
|
|
fg, bg termbox.Attribute
|
|
cursorFg, cursorBg termbox.Attribute
|
|
bordered bool
|
|
wrap bool
|
|
multiline bool
|
|
tabSkip bool
|
|
}
|
|
|
|
// CreateInputField creates an input field at x, y that is w by h
|
|
func CreateInputField(x, y, w, h int, fg, bg termbox.Attribute) *InputField {
|
|
i := InputField{x: x, y: y, width: w, height: h, fg: fg, bg: bg, cursorFg: bg, cursorBg: fg}
|
|
return &i
|
|
}
|
|
|
|
// GetID returns this control's ID
|
|
func (i *InputField) GetID() string { return i.id }
|
|
|
|
// SetID sets this control's ID
|
|
func (i *InputField) SetID(newID string) {
|
|
i.id = newID
|
|
}
|
|
|
|
// GetValue gets the current text that is in the InputField
|
|
func (i *InputField) GetValue() string { return i.value }
|
|
|
|
// SetValue sets the current text in the InputField to s
|
|
func (i *InputField) SetValue(s string) {
|
|
i.value = s
|
|
}
|
|
|
|
// GetX returns the x position of the input field
|
|
func (i *InputField) GetX() int { return i.x }
|
|
|
|
// SetX sets the x position of the input field
|
|
func (i *InputField) SetX(x int) {
|
|
i.x = x
|
|
}
|
|
|
|
// GetY returns the y position of the input field
|
|
func (i *InputField) GetY() int { return i.y }
|
|
|
|
// SetY sets the y position of the input field
|
|
func (i *InputField) SetY(y int) {
|
|
i.y = y
|
|
}
|
|
|
|
// GetWidth returns the current width of the input field
|
|
func (i *InputField) GetWidth() int { return i.width }
|
|
|
|
// SetWidth sets the current width of the input field
|
|
func (i *InputField) SetWidth(w int) {
|
|
i.width = w
|
|
}
|
|
|
|
// GetHeight returns the current height of the input field
|
|
func (i *InputField) GetHeight() int { return i.height }
|
|
|
|
// SetHeight sets the current height of the input field
|
|
func (i *InputField) SetHeight(h int) {
|
|
i.height = h
|
|
}
|
|
|
|
// GetFgColor returns the foreground color
|
|
func (i *InputField) GetFgColor() termbox.Attribute { return i.fg }
|
|
|
|
// SetFgColor sets the foreground color
|
|
func (i *InputField) SetFgColor(fg termbox.Attribute) {
|
|
i.fg = fg
|
|
}
|
|
|
|
// GetBgColor returns the background color
|
|
func (i *InputField) GetBgColor() termbox.Attribute { return i.bg }
|
|
|
|
// SetBgColor sets the current background color
|
|
func (i *InputField) SetBgColor(bg termbox.Attribute) {
|
|
i.bg = bg
|
|
}
|
|
|
|
// IsBordered returns true or false if this input field has a border
|
|
func (i *InputField) IsBordered() bool { return i.bordered }
|
|
|
|
// SetBordered sets whether we render a border around the input field
|
|
func (i *InputField) SetBordered(b bool) {
|
|
i.bordered = b
|
|
}
|
|
|
|
// IsTabSkipped returns whether this modal has it's tabskip flag set
|
|
func (i *InputField) IsTabSkipped() bool {
|
|
return i.tabSkip
|
|
}
|
|
|
|
// SetTabSkip sets the tabskip flag for this control
|
|
func (i *InputField) SetTabSkip(b bool) {
|
|
i.tabSkip = b
|
|
}
|
|
|
|
// DoesWrap returns true or false if this input field wraps text
|
|
func (i *InputField) DoesWrap() bool { return i.wrap }
|
|
|
|
// SetWrap sets whether we wrap the text at width.
|
|
func (i *InputField) SetWrap(b bool) {
|
|
i.wrap = b
|
|
}
|
|
|
|
// IsMultiline returns true or false if this field can have multiple lines
|
|
func (i *InputField) IsMultiline() bool { return i.multiline }
|
|
|
|
// SetMultiline sets whether the field can have multiple lines
|
|
func (i *InputField) SetMultiline(b bool) {
|
|
i.multiline = b
|
|
}
|
|
|
|
// HandleEvent accepts the termbox event and returns whether it was consumed
|
|
func (i *InputField) HandleEvent(event termbox.Event) bool {
|
|
if event.Key == termbox.KeyBackspace || event.Key == termbox.KeyBackspace2 {
|
|
if i.cursor+len(i.value) > 0 {
|
|
crs := len(i.value)
|
|
if i.cursor < 0 {
|
|
crs = i.cursor + len(i.value)
|
|
}
|
|
i.value = i.value[:crs-1] + i.value[crs:]
|
|
//i.value = i.value[:len(i.value)-1]
|
|
}
|
|
} else if event.Key == termbox.KeyArrowLeft {
|
|
if i.cursor+len(i.value) > 0 {
|
|
i.cursor--
|
|
}
|
|
} else if event.Key == termbox.KeyArrowRight {
|
|
if i.cursor < 0 {
|
|
i.cursor++
|
|
}
|
|
} else if event.Key == termbox.KeyCtrlU {
|
|
// Ctrl+U Clears the Input (before the cursor)
|
|
i.value = i.value[i.cursor+len(i.value):]
|
|
} else {
|
|
// Get the rune to add to our value. Space and Tab are special cases where
|
|
// we can't use the event's rune directly
|
|
var ch string
|
|
switch event.Key {
|
|
case termbox.KeySpace:
|
|
ch = " "
|
|
case termbox.KeyTab:
|
|
ch = "\t"
|
|
case termbox.KeyEnter:
|
|
if i.multiline {
|
|
ch = "\n"
|
|
}
|
|
default:
|
|
if KeyIsAlphaNumeric(event) || KeyIsSymbol(event) {
|
|
ch = string(event.Ch)
|
|
}
|
|
}
|
|
|
|
// TODO: Handle newlines
|
|
if i.cursor+len(i.value) == 0 {
|
|
i.value = string(ch) + i.value
|
|
} else if i.cursor == 0 {
|
|
i.value = i.value + string(ch)
|
|
} else {
|
|
strPt1 := i.value[:(len(i.value) + i.cursor)]
|
|
strPt2 := i.value[(len(i.value) + i.cursor):]
|
|
i.value = strPt1 + string(ch) + strPt2
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Draw outputs the input field on the screen
|
|
func (i *InputField) Draw() {
|
|
maxWidth := i.width
|
|
maxHeight := i.height
|
|
x, y := i.x, i.y
|
|
startX := i.x
|
|
startY := i.y
|
|
if i.bordered {
|
|
DrawBorder(i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
|
|
maxWidth--
|
|
maxHeight--
|
|
x++
|
|
y++
|
|
startX++
|
|
startY++
|
|
}
|
|
|
|
var strPt1, strPt2 string
|
|
var cursorRune rune
|
|
if len(i.value) > 0 {
|
|
if i.cursor+len(i.value) == 0 {
|
|
strPt1 = ""
|
|
strPt2 = i.value[1:]
|
|
cursorRune = rune(i.value[0])
|
|
} else if i.cursor == 0 {
|
|
strPt1 = i.value
|
|
strPt2 = ""
|
|
cursorRune = ' '
|
|
} else {
|
|
strPt1 = i.value[:(len(i.value) + i.cursor)]
|
|
strPt2 = i.value[(len(i.value)+i.cursor)+1:]
|
|
cursorRune = rune(i.value[len(i.value)+i.cursor])
|
|
}
|
|
} else {
|
|
strPt1, strPt2, cursorRune = "", "", ' '
|
|
}
|
|
if i.wrap {
|
|
// Split the text into maxWidth chunks
|
|
for len(strPt1) > maxWidth {
|
|
breakAt := maxWidth
|
|
DrawStringAtPoint(strPt1[:breakAt], x, y, i.fg, i.bg)
|
|
x = startX
|
|
y++
|
|
strPt1 = strPt1[breakAt:]
|
|
}
|
|
x, y = DrawStringAtPoint(strPt1, x, y, i.fg, i.bg)
|
|
if x >= maxWidth {
|
|
y++
|
|
x = startX
|
|
}
|
|
termbox.SetCell(x, y, cursorRune, i.cursorFg, i.cursorBg)
|
|
x++
|
|
if len(strPt2) > 0 {
|
|
lenLeft := maxWidth - len(strPt1) - 1
|
|
if lenLeft > 0 && len(strPt2) > lenLeft {
|
|
DrawStringAtPoint(strPt2[:lenLeft], x+1, y, i.fg, i.bg)
|
|
strPt2 = strPt2[lenLeft:]
|
|
}
|
|
for len(strPt2) > maxWidth {
|
|
breakAt := maxWidth
|
|
DrawStringAtPoint(strPt2[:breakAt], x, y, i.fg, i.bg)
|
|
x = startX
|
|
y++
|
|
strPt2 = strPt2[breakAt:]
|
|
}
|
|
x, y = DrawStringAtPoint(strPt2, x, y, i.fg, i.bg)
|
|
}
|
|
} else {
|
|
for len(strPt1)+len(strPt2)+1 > maxWidth {
|
|
if len(strPt1) >= len(strPt2) {
|
|
if len(strPt1) == 0 {
|
|
break
|
|
}
|
|
strPt1 = strPt1[1:]
|
|
} else {
|
|
strPt2 = strPt2[:len(strPt2)-1]
|
|
}
|
|
}
|
|
x, y = DrawStringAtPoint(strPt1, i.x+1, i.y+1, i.fg, i.bg)
|
|
termbox.SetCell(x, y, cursorRune, i.cursorFg, i.cursorBg)
|
|
DrawStringAtPoint(strPt2, x+1, y, i.fg, i.bg)
|
|
}
|
|
}
|