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Added text changed event to TextBox.

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This commit is contained in:
Sander Schobers 2021-06-17 19:34:37 +02:00
parent 7fa5601307
commit e5bfd1394c
1 changed files with 23 additions and 11 deletions
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34
ui/textbox.go
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@ -37,6 +37,8 @@ type TextBox struct {
Focus bool
Text string
Selection TextSelection
textChanged Events
}
func BuildTextBox(fn func(*TextBox)) *TextBox {
@ -64,6 +66,8 @@ func (b *TextBox) DesiredSize(ctx Context, _ geom.PointF32) geom.PointF32 {
return geom.PtF32(width+pad*2, height+pad*2)
}
func (b *TextBox) TextChanged() *Events { return &b.textChanged }
func (b *TextBox) mousePosToCaretPos(ctx Context, e MouseEvent) int {
p := b.ToControlPosition(e.Pos())
offset := p.X - b.box.bounds.Min.X
@ -93,13 +97,13 @@ func (b *TextBox) mousePosToCaretPos(ctx Context, e MouseEvent) int {
return carets[2]
}
func (b *TextBox) cut() string {
func (b *TextBox) cut(ctx Context) string {
start, end := b.selectionRange()
if end == 0 {
return ""
}
cut := b.Text[start:end]
b.Text = b.Text[:start] + b.Text[end:]
b.updateText(ctx, b.Text[:start]+b.Text[end:])
b.Selection.Caret = start
b.Selection.SetSelectionToCaret()
return cut
@ -170,20 +174,20 @@ func (b *TextBox) Handle(ctx Context, e Event) bool {
switch {
case e.Key == KeyDelete:
if b.Selection.HasSelection() {
b.cut()
b.cut(ctx)
} else {
caret := b.Selection.Caret
if caret < len(b.Text) {
b.Text = b.Text[:caret] + b.Text[caret+1:]
b.updateText(ctx, b.Text[:caret]+b.Text[caret+1:])
}
}
case e.Key == KeyBackspace:
if b.Selection.HasSelection() {
b.cut()
b.cut(ctx)
} else {
caret := b.Selection.Caret
if caret > 0 {
b.Text = b.Text[:caret-1] + b.Text[caret:]
b.updateText(ctx, b.Text[:caret-1]+b.Text[caret:])
b.Selection.Caret = caret - 1
b.Selection.SetSelectionToCaret()
}
@ -221,22 +225,22 @@ func (b *TextBox) Handle(ctx Context, e Event) bool {
return r
}, text)
if err == nil {
b.cut()
b.cut(ctx)
caret := b.Selection.Caret
b.Text = b.Text[:caret] + text + b.Text[caret:]
b.updateText(ctx, b.Text[:caret]+text+b.Text[caret:])
b.Selection.Caret = caret + len(text)
}
case KeyX:
DefaultClipboard.WriteText(b.cut())
DefaultClipboard.WriteText(b.cut(ctx))
}
}
return true
case *TextInputEvent:
if b.Selection.HasSelection() {
b.cut()
b.cut(ctx)
}
caret := b.Selection.Caret
b.Text = fmt.Sprintf("%s%c%s", b.Text[:caret], e.Character, b.Text[caret:])
b.updateText(ctx, fmt.Sprintf("%s%c%s", b.Text[:caret], e.Character, b.Text[caret:]))
b.Selection.Caret = caret + 1
b.Selection.SetSelectionToCaret()
return true
@ -272,3 +276,11 @@ func (b *TextBox) Render(ctx Context) {
}
})
}
func (b *TextBox) updateText(ctx Context, text string) {
if b.Text == text {
return
}
b.Text = text
b.textChanged.Notify(ctx, text)
}