First Commit

menu_item.go

@@ -0,0 +1,148 @@
+/*
+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 (
+	h "git.bullercodeworks.com/brian/dhcli/helpers"
+	"github.com/gdamore/tcell"
+)
+
+type MenuItem struct {
+	id      string
+	label   string
+	style   tcell.Style
+	active  bool
+	visible bool
+	x, y    int
+	w, h    int
+
+	menuType  MenuType
+	items     []*MenuItem
+	onPressed func() bool
+
+	manualExpand bool
+	expanded     bool
+	disabled     bool
+}
+
+func NewMenuItem(id string, style tcell.Style) *MenuItem {
+	ret := &MenuItem{style: style}
+	ret.Init(id)
+	return ret
+}
+
+func (w *MenuItem) Init(id string) {
+	w.id = id
+	w.visible = true
+}
+func (w *MenuItem) Id() string                         { return w.id }
+func (w *MenuItem) HandleResize(ev *tcell.EventResize) {}
+func (w *MenuItem) HandleKey(ev *tcell.EventKey) bool {
+	if !w.active {
+		return false
+	}
+	if ev.Key() == tcell.KeyEnter {
+		if w.onPressed != nil {
+			return w.onPressed()
+		}
+	}
+	return false
+}
+func (w *MenuItem) HandleTime(ev *tcell.EventTime) {}
+func (w *MenuItem) Draw(screen tcell.Screen) {
+	if !w.visible {
+		return
+	}
+	st := w.style
+	if w.active {
+		st = w.style.Reverse(true)
+	}
+
+	x, y := w.x, w.y
+	wd := w.w
+	h.DrawText(x, y, h.PadR(w.label, wd), st, screen)
+	if w.expanded {
+		x += 2
+		for i := range w.items {
+			w.items[i].SetPos(Coord{X: x, Y: y})
+			w.items[i].Draw(screen)
+			y++
+		}
+	}
+}
+func (w *MenuItem) Active() bool { return w.active }
+func (w *MenuItem) SetActive(a bool) {
+	w.active = a
+	if !w.manualExpand {
+		w.expanded = a
+	}
+}
+func (w *MenuItem) Visible() bool     { return w.visible }
+func (w *MenuItem) SetVisible(a bool) { w.visible = a }
+func (w *MenuItem) SetX(x int)        { w.x = x }
+func (w *MenuItem) SetY(y int)        { w.y = y }
+func (w *MenuItem) GetX() int         { return w.x }
+func (w *MenuItem) GetY() int         { return w.y }
+func (w *MenuItem) SetPos(c Coord)    { w.x, w.y = c.X, c.Y }
+func (w *MenuItem) SetW(x int)        { w.w = x }
+func (w *MenuItem) SetH(y int)        { w.h = y }
+func (w *MenuItem) GetW() int         { return w.w }
+func (w *MenuItem) GetH() int         { return w.y }
+func (w *MenuItem) WantW() int {
+	ret := len(w.label) + 2
+	if len(w.items) > 0 {
+		for i := range w.items {
+			if w.items[i].WantW() > ret {
+				ret = w.items[i].WantW()
+				// TODO: Figure offset of subitems
+			}
+		}
+	}
+	return ret
+}
+
+func (w *MenuItem) WantH() int {
+	ret := 1
+	if len(w.items) > 0 {
+		for i := range len(w.items) {
+			ret += w.items[i].WantH()
+		}
+	}
+	return ret
+}
+func (w *MenuItem) SetSize(c Coord) { w.w, w.h = c.X, c.Y }
+func (w *MenuItem) Focusable() bool { return !w.disabled }
+
+// How much width this item wants
+func (w *MenuItem) Expand(e bool) {
+	if w.manualExpand {
+		w.expanded = e
+	}
+}
+
+func (w *MenuItem) SetLabel(lbl string) { w.label = lbl }
+func (w *MenuItem) SetDisabled(d bool)  { w.disabled = d }
+
+func (w *MenuItem) AddItems(iL ...*MenuItem) {
+	w.items = append(w.items, iL...)
+}
+func (w *MenuItem) SetOnPressed(p func() bool) { w.onPressed = p }