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// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0
package main
import (
"fmt"
"slices"
"strings"
"github.com/awesome-gocui/gocui"
"go.wit.com/log"
"go.wit.com/widget"
)
func createStdout(g *gocui.Gui) bool {
if me.stdout.tk == nil {
makeOutputWidget(g, "this is a create before a mouse click")
// me.logStdout.v.Write([]byte(msg))
// this will show very early debugging output
// keep this code commented out but do not remove it. when it doubt, this will be the Light of Elendil
// NEVER REMOVE THIS CODE
msg := fmt.Sprintf("test out gocuiEvent() %d\n", me.ecount)
me.stdout.tk.Write([]byte(msg))
log.Log(NOW, "logStdout test out")
}
return true
}
func coreStdout() {
if me.stdout.tk != nil {
return
}
a := new(widget.Action)
a.ProgName = "2stdout2"
a.WidgetType = widget.Stdout
a.WidgetId = me.stdout.wId
a.ParentId = 0
// n := addNode(a)
n := me.myTree.AddNode(a)
me.stdout.tk = initWidget(n)
tk := me.stdout.tk
tk.cuiName = "msg"
tk.gocuiSize.w0 = me.stdout.lastW
tk.gocuiSize.h0 = me.stdout.lastH
tk.gocuiSize.w1 = tk.gocuiSize.w0 + me.stdout.w
tk.gocuiSize.h1 = tk.gocuiSize.h0 + me.stdout.h
}
func makeOutputWidget(g *gocui.Gui, stringFromMouseClick string) *gocui.View {
if me.treeRoot == nil {
// keep skipping this until the binary tree is initialized
return nil
}
coreStdout()
if me.stdout.tk == nil {
return nil
}
me.stdout.tk.cuiName = "msg"
me.stdout.tk.SetView()
v, err := g.View("msg")
if v == nil {
// log.Log(NOW, "makeoutputwindow() this is supposed to happen. v == nil", err)
} else {
log.Log(NOW, "makeoutputwindow() msg != nil. WTF now? err =", err)
return v
}
v = me.stdout.tk.v
v.Clear()
v.SelBgColor = gocui.ColorCyan
v.SelFgColor = gocui.ColorBlack
fmt.Fprintln(v, "figure out how to capture STDOUT to here\n"+stringFromMouseClick)
// g.SetViewOnBottom("msg")
// setBottomBG()
me.stdout.tk.DrawAt(me.stdout.lastW, me.stdout.lastH)
relocateStdoutOffscreen()
return v
}
func relocateStdoutOffscreen() {
if me.stdout.tk == nil {
return
}
if !me.stdout.disable {
log.Info("Using gocui STDOUT")
log.CaptureMode(me.stdout.tk)
}
newW := 10
newH := 0 - me.stdout.h - 4
me.stdout.tk.relocateStdout(newW, newH)
}
func (tk *guiWidget) relocateStdout(w int, h int) {
if me.stdout.w < 8 {
me.stdout.w = 8
}
if me.stdout.h < 4 {
me.stdout.h = 4
}
if w+me.stdout.w < 2 {
w = 2
}
if h+me.stdout.h < 2 {
h = 2
}
w0 := w
h0 := h
w1 := w + me.stdout.w
h1 := h + me.stdout.h
tk.gocuiSize.w0 = w0
tk.gocuiSize.w1 = w1
tk.gocuiSize.h0 = h0
tk.gocuiSize.h1 = h1
tk.full.w0 = w0
tk.full.w1 = w1
tk.full.h0 = h0
tk.full.h1 = h1
tk.SetView()
}
// from the gocui devs:
// Write appends a byte slice into the view's internal buffer. Because
// View implements the io.Writer interface, it can be passed as parameter
// of functions like fmt.Fprintf, fmt.Fprintln, io.Copy, etc. Clear must
// be called to clear the view's buffer.
func (w stdout) Height() int {
if w.tk == nil {
return 40
}
return w.tk.gocuiSize.Height() - 2
}
func (w stdout) Write(p []byte) (n int, err error) {
me.writeMutex.Lock()
defer me.writeMutex.Unlock()
lines := strings.Split(strings.TrimSpace(string(p)), "\n")
me.stdout.outputS = append(me.stdout.outputS, lines...)
if me.outf != nil {
fmt.Fprint(me.outf, string(p))
}
return len(p), nil
}
func (w *guiWidget) Write(p []byte) (n int, err error) {
lines := strings.Split(strings.TrimSpace(string(p)), "\n")
if me.outf != nil {
fmt.Fprint(me.outf, string(p))
}
if w == nil {
me.stdout.outputS = append(me.stdout.outputS, lines...)
return len(p), nil
}
w.tainted = true
me.writeMutex.Lock()
defer me.writeMutex.Unlock()
me.stdout.outputS = append(me.stdout.outputS, lines...)
tk := me.stdout.tk
if tk == nil {
return len(p), nil
}
if tk.v == nil {
// redo this old code
v, _ := me.baseGui.View("msg")
if v != nil {
tk.v = v
}
return len(p), nil
}
tk.refreshStdout()
return len(p), nil
}
// lets the user page up and down through the stdout buffer
func (tk *guiWidget) refreshStdout() {
if len(me.stdout.outputS) < me.stdout.h+me.stdout.pager {
// log.Info(fmt.Sprintf("buffer too small=%d len(%d)", me.stdout.pager, len(me.stdout.outputS)))
var cur []string
cur = append(cur, me.stdout.outputS...)
slices.Reverse(cur)
tk.v.Clear()
fmt.Fprintln(tk.v, strings.Join(cur, "\n"))
return
}
var cur []string
// chop off the last lines in the buffer
chop := len(me.stdout.outputS) - (me.stdout.pager + me.stdout.h)
cur = append(cur, me.stdout.outputS[chop:chop+me.stdout.h]...)
if me.stdout.reverse {
slices.Reverse(cur)
}
tk.v.Clear()
fmt.Fprintln(tk.v, strings.Join(cur, "\n"))
}
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