add semi-working gocuiv0.7.4

commit 947169df5a22c9f9b53f825764747f648c70ff1e
Author: Jeff Carr <[email protected]>
Date:   Wed Mar 29 22:44:08 2023 -0500

    ready for version v0.7.4

        start deprecating toolkit.Widget
        switch to variable name 'ParentId'
        use 'ActionType' and 'WidgetType'
        preliminary redraw()
        final definition of variables 'Name' and 'Text'
        more cleaning of the code
        remove lots of dumb code
        bind 'd' key press to dump out debugging info
        early color handling in gocui!

    Signed-off-by: Jeff Carr <[email protected]>

commit 6013fde8332e8ecbffaf1a0977ba2e1da8ea8775
Author: Jeff Carr <[email protected]>
Date:   Sun Mar 26 17:19:20 2023 -0500

    improvements towards a working dns control panel

        democui has the help menu
        try to add mouse support to gocui
        make a direct access method
        Margin() and Pad() tests
        add SPEW
        also push devel branch to github

    Signed-off-by: Jeff Carr <[email protected]>

commit 6f91f5e080e06cdc0f34b13d23e5fd16ea37259a
Author: Jeff Carr <[email protected]>
Date:   Fri Mar 24 20:14:18 2023 -0500

    starting to try safe chan and goroutines

        fix tab title's
        right before attempting to add chan goroutines
        removed "where" widget pointer
        box added to tab
        experiement with log as it's own repo

    Signed-off-by: Jeff Carr <[email protected]>

Signed-off-by: Jeff Carr <[email protected]>

1 files changed, 191 insertions, 0 deletions

diff --git a/toolkit/democui/, b/toolkit/democui/,
new file mode 100644
index 0000000..762f8eb
--- /dev/null
+++ b/toolkit/democui/,
@@ -0,0 +1,191 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/awesome-gocui/gocui"
+)
+
+func main() {
+	g, err := gocui.NewGui(gocui.OutputNormal, true)
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+
+	g.Cursor = false
+	g.Mouse = true
+
+	g.SetManagerFunc(layout)
+
+	if err := keybindings(g); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
+		log.Panicln(err)
+	}
+}
+
+var initialMouseX, initialMouseY, xOffset, yOffset int
+var globalMouseDown, msgMouseDown, movingMsg bool
+
+func layout(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+	if _, err := g.View("msg"); msgMouseDown && err == nil {
+		moveMsg(g)
+	}
+	if v, err := g.SetView("global", -1, -1, maxX, maxY, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Frame = false
+	}
+	if v, err := g.SetView("but1", 2, 2, 22, 7, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.SelBgColor = gocui.ColorGreen
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, "Button 1 - line 1")
+		fmt.Fprintln(v, "Button 1 - line 2")
+		fmt.Fprintln(v, "Button 1 - line 3")
+		fmt.Fprintln(v, "Button 1 - line 4")
+		if _, err := g.SetCurrentView("but1"); err != nil {
+			return err
+		}
+	}
+	if v, err := g.SetView("but2", 24, 2, 44, 4, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.SelBgColor = gocui.ColorGreen
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, "Button 2 - line 1")
+	}
+	updateHighlightedView(g)
+	return nil
+}
+
+func keybindings(g *gocui.Gui) error {
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
+		return err
+	}
+	for _, n := range []string{"but1", "but2"} {
+		if err := g.SetKeybinding(n, gocui.MouseLeft, gocui.ModNone, showMsg); err != nil {
+			return err
+		}
+	}
+	if err := g.SetKeybinding("", gocui.MouseRelease, gocui.ModNone, mouseUp); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.MouseLeft, gocui.ModNone, globalDown); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("msg", gocui.MouseLeft, gocui.ModNone, msgDown); err != nil {
+		return err
+	}
+	return nil
+}
+
+func quit(g *gocui.Gui, v *gocui.View) error {
+	return gocui.ErrQuit
+}
+
+func showMsg(g *gocui.Gui, v *gocui.View) error {
+	var l string
+	var err error
+
+	if _, err := g.SetCurrentView(v.Name()); err != nil {
+		return err
+	}
+
+	_, cy := v.Cursor()
+	if l, err = v.Line(cy); err != nil {
+		l = ""
+	}
+
+	maxX, maxY := g.Size()
+	if v, err := g.SetView("msg", maxX/2-10, maxY/2, maxX/2+10, maxY/2+2, 0); err == nil || errors.Is(err, gocui.ErrUnknownView) {
+		v.Clear()
+		v.SelBgColor = gocui.ColorCyan
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, l)
+	}
+	return nil
+}
+
+func updateHighlightedView(g *gocui.Gui) {
+	mx, my := g.MousePosition()
+	for _, view := range g.Views() {
+		view.Highlight = false
+	}
+	if v, err := g.ViewByPosition(mx, my); err == nil {
+		v.Highlight = true
+	}
+}
+
+func moveMsg(g *gocui.Gui) {
+	mx, my := g.MousePosition()
+	if !movingMsg && (mx != initialMouseX || my != initialMouseY) {
+		movingMsg = true
+	}
+	g.SetView("msg", mx-xOffset, my-yOffset, mx-xOffset+20, my-yOffset+2, 0)
+}
+
+func msgDown(g *gocui.Gui, v *gocui.View) error {
+	initialMouseX, initialMouseY = g.MousePosition()
+	if vx, vy, _, _, err := g.ViewPosition("msg"); err == nil {
+		xOffset = initialMouseX - vx
+		yOffset = initialMouseY - vy
+		msgMouseDown = true
+	}
+	return nil
+}
+
+func globalDown(g *gocui.Gui, v *gocui.View) error {
+	mx, my := g.MousePosition()
+	if vx0, vy0, vx1, vy1, err := g.ViewPosition("msg"); err == nil {
+		if mx >= vx0 && mx <= vx1 && my >= vy0 && my <= vy1 {
+			return msgDown(g, v)
+		}
+	}
+	globalMouseDown = true
+	maxX, _ := g.Size()
+	msg := fmt.Sprintf("Mouse down at: %d,%d", mx, my)
+	x := mx - len(msg)/2
+	if x < 0 {
+		x = 0
+	} else if x+len(msg)+1 > maxX-1 {
+		x = maxX - 1 - len(msg) - 1
+	}
+	if v, err := g.SetView("globalDown", x, my-1, x+len(msg)+1, my+1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.WriteString(msg)
+	}
+	return nil
+}
+
+func mouseUp(g *gocui.Gui, v *gocui.View) error {
+	if msgMouseDown {
+		msgMouseDown = false
+		if movingMsg {
+			movingMsg = false
+			return nil
+		} else {
+			g.DeleteView("msg")
+		}
+	} else if globalMouseDown {
+		globalMouseDown = false
+		g.DeleteView("globalDown")
+	}
+	return nil
+}