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widgets/json_content.go

@@ -31,7 +31,6 @@ import (
 	"github.com/gdamore/tcell"
 )
 
-// TODO: Format contents as json. For now this is a duplice of the Text widget
 type JsonContent struct {
 	id string
 
@@ -40,15 +39,20 @@ type JsonContent struct {
 	style       tcell.Style
 	x, y        int
 	w, h        int
-	visible     bool
-	active      bool
-	focusable   bool
-	keyMap      *wd.KeyMap
+
+	border    []rune
+	visible   bool
+	active    bool
+	focusable bool
+	keyMap    *wd.KeyMap
 
 	editable bool
 	value    any
 
 	activeNode []string
+
+	vimMode bool
+	cursor  int
 }
 
 var _ wd.Widget = (*JsonContent)(nil)
@@ -64,7 +68,45 @@ func (w *JsonContent) Init(id string, style tcell.Style) {
 	w.style = style
 	w.visible = true
 	w.focusable = false
-	w.keyMap = wd.BlankKeyMap()
+	w.keyMap = wd.NewKeyMap(
+		wd.NewKey(wd.BuildEK(tcell.KeyUp), func(_ *tcell.EventKey) bool { return w.MoveUp() }),
+		wd.NewKey(wd.BuildEK(tcell.KeyDown), func(_ *tcell.EventKey) bool { return w.MoveDown() }),
+		wd.NewKey(wd.BuildEK(tcell.KeyEnter), func(ev *tcell.EventKey) bool {
+			return false
+		}),
+		wd.NewKey(wd.BuildEK(tcell.KeyPgDn), func(_ *tcell.EventKey) bool { return w.PageDn() }),
+		wd.NewKey(wd.BuildEK(tcell.KeyPgUp), func(_ *tcell.EventKey) bool { return w.PageUp() }),
+		wd.NewKey(wd.BuildEKr('j'), func(ev *tcell.EventKey) bool {
+			if !w.vimMode {
+				return false
+			}
+			return w.MoveDown()
+		}),
+		wd.NewKey(wd.BuildEKr('k'), func(ev *tcell.EventKey) bool {
+			if !w.vimMode {
+				return false
+			}
+			return w.MoveUp()
+		}),
+		wd.NewKey(wd.BuildEKr('b'), func(ev *tcell.EventKey) bool {
+			if !w.vimMode {
+				return false
+			}
+			if ev.Modifiers()&tcell.ModCtrl != 0 {
+				return w.PageUp()
+			}
+			return false
+		}),
+		wd.NewKey(wd.BuildEKr('f'), func(ev *tcell.EventKey) bool {
+			if !w.vimMode {
+				return false
+			}
+			if ev.Modifiers()&tcell.ModCtrl != 0 {
+				return w.PageDn()
+			}
+			return false
+		}),
+	)
 }
 
 func (w *JsonContent) Id() string                         { return w.id }
@@ -73,15 +115,61 @@ func (w *JsonContent) HandleResize(ev *tcell.EventResize) { w.w, w.h = ev.Size()
 func (w *JsonContent) GetKeyMap() *wd.KeyMap   { return w.keyMap }
 func (w *JsonContent) SetKeyMap(km *wd.KeyMap) { w.keyMap = km }
 
-func (w *JsonContent) HandleKey(ev *tcell.EventKey) bool { return w.keyMap.Handle(ev) }
-func (w *JsonContent) HandleTime(ev *tcell.EventTime)    {}
+func (w *JsonContent) HandleKey(ev *tcell.EventKey) bool {
+	return w.keyMap.Handle(ev)
+}
+func (w *JsonContent) HandleTime(ev *tcell.EventTime) {}
 func (w *JsonContent) Draw(screen tcell.Screen) {
 	if !w.visible {
 		return
 	}
-	y := w.y
-	for i := range w.contents {
-		wh.DrawText(w.x, y, w.contents[i], w.style, screen)
+	x, y := w.x, w.y
+	brdSz := 0
+	if len(w.border) > 0 {
+		brdSz = 2
+		wh.BorderFilled(x, y, x+w.w, y+w.h, w.border, w.style, screen)
+	}
+	x, y = x+1, y+1
+	h := w.h - brdSz
+	ln := len(w.contents)
+	st, ed := 0, ln-1
+	if ln == 0 {
+		return
+	}
+	if ln > w.h-2 {
+		mid := h / 2
+		if w.cursor < mid {
+			// contents need to start at 0
+			ed = h + 1
+		} else if w.cursor > ln-mid {
+			// contents need to begin at ln-h
+			st = ln - h + 1
+		} else {
+			st = w.cursor - mid
+			ed = st + h + 1
+		}
+	}
+	// ed cannot be higher than ln-1
+	if st < 0 {
+		st = 0
+	}
+	if ed > ln-1 {
+		ed = ln - 1
+	}
+	for i := st; i <= ed; i++ {
+		st := w.style
+		dim := true
+		if i == w.cursor {
+			dim = false
+		} else {
+			st = st.Foreground(tcell.ColorGreen)
+		}
+		txt := w.contents[i]
+		if len(txt) > w.w-brdSz && w.w-brdSz >= 0 {
+			txt = txt[:(w.w - brdSz)]
+		}
+
+		wh.DrawText(w.x, y, txt, st.Dim(dim).Bold(!dim), screen)
 		y++
 	}
 }
@@ -120,6 +208,13 @@ func (w *JsonContent) SetValue(v any) error {
 	w.contents = strings.Split(w.valueString, "\n")
 	return nil
 }
+func (w *JsonContent) SetBorder(brd []rune) {
+	if len(brd) == 0 {
+		w.border = wh.BRD_SIMPLE
+	} else {
+		w.border = wh.ValidateBorder(brd)
+	}
+}
 
 func (w *JsonContent) SetEditable(v bool) { w.editable = v }
 
@@ -136,3 +231,44 @@ func (w *JsonContent) SetEditable(v bool) { w.editable = v }
 func (w *JsonContent) GetJsonContent() string { return w.text }
 func (w *JsonContent) GetContents() []string { return w.contents }
 */
+
+func (w *JsonContent) SetVimMode(b bool) { w.vimMode = b }
+func (w *JsonContent) MoveUp() bool {
+	w.cursor--
+	if w.cursor < 0 {
+		w.cursor = 0
+	}
+	return true
+}
+func (w *JsonContent) MoveDown() bool {
+	w.cursor++
+	if w.cursor >= len(w.contents) {
+		w.cursor = len(w.contents) - 1
+	}
+	return true
+}
+func (w *JsonContent) PageUp() bool {
+	w.cursor -= w.h
+	if w.cursor < 0 {
+		w.cursor = 0
+	}
+	return true
+}
+func (w *JsonContent) PageDn() bool {
+	w.cursor += w.h
+	if w.cursor > len(w.contents)-1 {
+		w.cursor = len(w.contents) - 1
+	}
+	return true
+}
+
+func (w *JsonContent) GetSelectedValue() string {
+	if w.cursor >= len(w.contents) {
+		w.cursor = len(w.contents) - 1
+	}
+	var ret string
+	ret = w.contents[w.cursor]
+	ret = ret[strings.Index(ret, "\": \"")+3:]
+	ret = ret[1 : len(ret)-1]
+	return ret
+}