gocui/libnotify.go

// Copyright 2014 The gocui Authors. All rights reserved.
// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"fmt"
	"time"

	"github.com/awesome-gocui/gocui"
	log "go.wit.com/log"
	"go.wit.com/toolkits/tree"
	"go.wit.com/widget"
)

// create a new widget in the binary tree
func makeNewInternalWidget(wId int) *guiWidget {
	if me.treeRoot == nil {
		log.Info("GOGUI Init ERROR. treeRoot == nil")
		return nil
	}
	n := new(tree.Node)
	n.WidgetType = widget.Flag
	n.WidgetId = wId
	n.ParentId = 0

	// store the internal toolkit information
	tk := new(guiWidget)
	tk.frame = true

	tk.node = n
	tk.node.Parent = me.treeRoot

	// set the name used by gocui to the id
	tk.cuiName = fmt.Sprintf("%d DR", wId)

	tk.setColorInput()

	// add this new widget on the binary tree
	tk.parent = me.treeRoot.TK.(*guiWidget)
	if tk.parent == nil {
		panic("makeNewFlagWidget() didn't get treeRoot guiWidget")
	} else {
		tk.parent.children = append(tk.parent.children, tk)
	}

	n.TK = tk
	return tk
}

func makeClock(wId int) {
	if me.treeRoot == nil {
		log.Info("gogui makeClock() error. treeRoot == nil")
		return
	}
	me.notify.clock.tk = makeNewInternalWidget(wId)
	me.notify.clock.tk.dumpWidget("init() clock")
	w, h := me.baseGui.MousePosition()
	me.notify.clock.tk.MoveToOffset(w, h)
	me.notify.clock.tk.labelN = time.Now().Format("15:04:05")
	me.notify.clock.tk.frame = false
	me.notify.clock.tk.setColorLabel()
	me.notify.clock.tk.Show()
	me.notify.clock.active = true
	me.notify.clock.tk.dumpWidget("showClock()")

}

func libNotifyUpdate() {
	if me.baseGui == nil {
		log.Info("libNotifyUpdate error baseGui == nil")
		return
	}

	// refresh GOCUI
	me.baseGui.Update(testRefresh)
	// me.baseGui.UpdateAsync(testRefresh) // Async option. probably don't need this?

	if me.notify.clock.tk == nil {
		log.Info("libNotifyUpdate error clock.tk == nil")
		return
	}

	// check for SIGWINCH. If so, move the libnotify clock
	w, h := me.baseGui.Size()
	if me.winchW != w || me.winchH != h {
		log.Info("handle SIGWINCH!", w, h)
		me.notify.clock.tk.MoveToOffset(w-15, 1)
		me.notify.clock.tk.Hide()
		me.notify.clock.tk.Show()
		me.winchW = w
		me.winchH = h
	}

	// update the time
	me.notify.clock.tk.v.Clear()
	me.notify.clock.tk.labelN = time.Now().Format("15:04:05")
	me.notify.clock.tk.v.WriteString(me.notify.clock.tk.labelN)
}

// in the very end of redrawing things, this will place the help and stdout on the top or botton
// depending on the state the user has chosen
func setThingsOnTop() {
	if me.showHelp { // terrible variable name. FIXME
		// log.Info("help does not exist")
	} else {
		me.baseGui.SetViewOnTop("help")
	}
	if me.notify.clock.tk != nil {
		me.baseGui.SetViewOnTop(me.notify.clock.tk.v.Name())
	}

	if me.stdout.tk == nil {
		makeOutputWidget(me.baseGui, "from setThingsOnTop()")
	}
	if me.stdout.tk == nil {
		return
	}
	if me.stdout.tk.v == nil {
		return
	}
	if me.dark {
		me.stdout.tk.v.FgColor = gocui.ColorWhite
		me.stdout.tk.v.BgColor = gocui.ColorBlack
	} else {
		me.stdout.tk.v.FgColor = gocui.ColorBlack
		me.stdout.tk.v.BgColor = gocui.AttrNone
	}

	if me.stdout.outputOnTop {
		me.baseGui.SetViewOnTop("msg")
	} else {
		me.baseGui.SetViewOnBottom("msg")
	}
	if me.stdout.startOnscreen {
		// log.Info("THIS TRIGGERS STDOUT") // todo: make a proper init() & move this there
		me.stdout.tk.relocateStdout(me.stdout.lastW, me.stdout.lastH)
		me.stdout.startOnscreen = false
	}
	setBottomBG()
}

func setBottomBG() {
	// this attempts to find the "BG" widget and set it to the background on the very very bottom
	rootTK := me.treeRoot.TK.(*guiWidget)
	if tk := rootTK.findBG(); tk != nil {
		// log.Info("found BG. setting to bottom", tk.cuiName)
		if me.dark {
			tk.v.BgColor = gocui.ColorBlack
		} else {
			tk.v.BgColor = gocui.ColorWhite
		}
		tk.v.Clear()
		me.baseGui.SetViewOnBottom(tk.cuiName)
		w, h := me.baseGui.Size()
		me.baseGui.SetView(tk.cuiName, -1, -1, w+1, h+1, 0)
	}
}