A lot of layout work

wdgt_checkbox.go

@@ -0,0 +1,143 @@
+/*
+Copyright © Brian Buller <brian@bullercodeworks.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package widgets
+
+import (
+	"fmt"
+
+	wh "git.bullercodeworks.com/brian/tcell-widgets/helpers"
+	"github.com/gdamore/tcell"
+)
+
+const (
+	CHECKBOX_ON = iota
+	CHECKBOX_OFF
+	CHECKBOX_MAYBE
+)
+
+type Checkbox struct {
+	id       string
+	label    string
+	style    tcell.Style
+	active   bool
+	visible  bool
+	tabbable bool
+	state    int
+	x, y     int
+	w, h     int
+
+	stateRunes []rune
+}
+
+var _ Widget = (*Checkbox)(nil)
+
+func NewCheckbox(id string, style tcell.Style) *Checkbox {
+	ret := &Checkbox{}
+	ret.Init(id, style)
+	return ret
+}
+
+func (w *Checkbox) Init(id string, style tcell.Style) {
+	w.id = id
+	w.style = style
+	w.visible = true
+	w.stateRunes = []rune{'X', ' ', '-'}
+	w.tabbable = true
+}
+func (w *Checkbox) Id() string { return w.id }
+func (w *Checkbox) HandleResize(ev *tcell.EventResize) {
+	w.w, w.h = ev.Size()
+	// w.w = wh.Min(w.w, w.WantW())
+	// w.h = wh.Min(w.h, w.WantH())
+}
+
+func (w *Checkbox) HandleKey(ev *tcell.EventKey) bool {
+	if !w.active {
+		return false
+	}
+	if ev.Key() == tcell.KeyEnter {
+		if w.state == CHECKBOX_ON {
+			w.state = CHECKBOX_OFF
+		} else {
+			w.state = CHECKBOX_ON
+		}
+		return true
+	}
+	return false
+}
+func (w *Checkbox) HandleTime(ev *tcell.EventTime) {}
+func (w *Checkbox) Draw(screen tcell.Screen) {
+	if !w.visible {
+		return
+	}
+	dStyle := w.style
+	if w.active {
+		dStyle = w.style.Bold(true)
+	}
+	wh.DrawText(w.x, w.y, fmt.Sprintf("[%s] %s", string(w.state), w.label), dStyle, screen)
+}
+
+func (w *Checkbox) Active() bool      { return w.active }
+func (w *Checkbox) SetActive(a bool)  { w.active = a }
+func (w *Checkbox) Visible() bool     { return w.visible }
+func (w *Checkbox) SetVisible(a bool) { w.visible = a }
+func (w *Checkbox) SetX(x int)        { w.x = x }
+func (w *Checkbox) SetY(y int)        { w.y = y }
+func (w *Checkbox) GetX() int         { return w.x }
+func (w *Checkbox) GetY() int         { return w.y }
+func (w *Checkbox) GetPos() Coord     { return Coord{X: w.x, Y: w.y} }
+func (w *Checkbox) SetPos(c Coord)    { w.x, w.y = c.X, c.Y }
+func (w *Checkbox) SetW(x int)        { w.w = x }
+func (w *Checkbox) SetH(y int)        { w.h = y }
+func (w *Checkbox) GetW() int         { return w.w }
+func (w *Checkbox) GetH() int         { return w.y }
+func (w *Checkbox) WantW() int {
+	return len(fmt.Sprintf("[%s] %s", string(w.state), w.label))
+}
+func (w *Checkbox) WantH() int         { return 1 }
+func (w *Checkbox) SetSize(c Coord)    { w.w, w.h = c.X, c.Y }
+func (w *Checkbox) Focusable() bool    { return true }
+func (w *Checkbox) SetTabbable(b bool) { w.tabbable = b }
+func (w *Checkbox) Tabbable() bool     { return w.tabbable }
+func (w *Checkbox) MinW() int {
+	return len(fmt.Sprintf("[%s] %s", string(w.state), w.label))
+}
+func (w *Checkbox) MinH() int { return 1 }
+
+func (w *Checkbox) SetLabel(l string) { w.label = l }
+func (w *Checkbox) SetChecked(v bool) {
+	if v {
+		w.state = CHECKBOX_ON
+	} else {
+		w.state = CHECKBOX_OFF
+	}
+}
+func (w *Checkbox) IsChecked() bool { return w.state == CHECKBOX_ON }
+func (w *Checkbox) SetToMaybe()     { w.state = CHECKBOX_MAYBE }
+func (w *Checkbox) SetStateRunes(runes []rune) {
+	for i := range runes {
+		if i > 2 {
+			return
+		}
+		w.stateRunes[i] = runes[i]
+	}
+}