gocui/dropdown.go

package main

import (
	"fmt"

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

func makeDropdownView(ddItems string) *guiWidget {
	newNode := addDropdown()
	tk := newNode.TK.(*guiWidget)
	tk.labelN = ddItems
	tk.SetText(ddItems)
	tk.gocuiSize.w0 = 20
	tk.gocuiSize.w1 = 40
	tk.gocuiSize.h0 = 10
	tk.gocuiSize.h1 = 25
	tk.v, _ = me.baseGui.SetView("ddview",
		tk.gocuiSize.w0,
		tk.gocuiSize.h0,
		tk.gocuiSize.w1,
		tk.gocuiSize.h1, 0)
	if tk.v == nil {
		return tk
	}
	tk.v.Wrap = true
	tk.v.Frame = true
	tk.v.Clear()
	fmt.Fprint(tk.v, ddItems)
	tk.SetVisible(true)
	return tk
}

func addDropdown() *tree.Node {
	n := new(tree.Node)
	n.WidgetType = widget.Flag
	n.WidgetId = 2222
	n.ParentId = 0

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

	tk.node = n
	// copy the data from the action message
	tk.node.State.Label = "DropBox"

	// set the name used by gocui to the id
	tk.cuiName = "-1 dropbox"

	tk.color = &colorFlag

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

	n.TK = tk
	return n
}

func (tk *guiWidget) showDropdown() {
	var ddItems string
	for i, s := range tk.vals {
		log.Log(NOW, "showDropdown()", tk.String(), i, s)
		ddItems += s + "\n"
	}

	log.Log(NOW, "showDropdown() visible =", tk.Visible())
	if tk.Visible() {
		tk.SetVisible(false)
		me.baseGui.DeleteView("ddview")
		tk.v = nil
	} else {
		log.Log(NOW, "new dns list should be set to:", ddItems)
		tk.labelN = ddItems
		tk.SetText(ddItems)
		tk.SetVisible(true)
		tk.v.Clear()
		fmt.Fprint(tk.v, ddItems)
	}
}

func hideDDview() error {
	w, h := me.baseGui.MousePosition()
	log.Log(NOW, "hide dropdown menu() view msgMouseDown (w,h) =", w, h)
	if me.dropdownV == nil {
		return gocui.ErrUnknownView
	}
	if me.dropdownV.v == nil {
		return gocui.ErrUnknownView
	}
	me.dropdownV.SetVisible(false)
	return nil
}

func showDDview() error {
	w, h := me.baseGui.MousePosition()
	log.Log(NOW, "show dropdown menu() view msgMouseDown (w,h) =", w, h)
	if me.dropdownV == nil {
		return gocui.ErrUnknownView
	}
	if me.dropdownV.v == nil {
		return gocui.ErrUnknownView
	}
	me.dropdownV.SetVisible(true)
	return nil
}

// if there is a drop down view active, treat it like a dialog box and close it
func (w *guiWidget) dropdownClicked(mouseW, mouseH int) {
	log.Log(NOW, "dropdownClicked() (w,h) =", mouseW, mouseH)
	w.deleteView()

	/*
	tk := me.dropdownV
	if tk.Visible() {
		log.Log(NOW, "hide DDview() Mouse really down at:", mouseX, mouseH)
		// hideDDview()
	} else {
		log.Log(NOW, "show DDview() Mouse really down at:", mouseX, mouseH)
		log.Log(NOW, "can you see the dropdown menu right now?")
		log.Log(NOW, "if so, something is wrong. I think you can't see it")
		showDDview()
	}
	*/
}


func dropdownUnclicked(mouseX, mouseH int) {
	tk := me.dropdownV
	log.Log(NOW, "mouseUp() view msgMouseDown (check here for dropdown menu click) (w,h) =", mouseX, mouseH)
	log.Log(NOW, "mouseUp() ddview is the thing that was clicked", mouseX, mouseH)
	log.Log(NOW, "mouseUp() find out what the string is here", mouseX, mouseH, tk.gocuiSize.h1)

	var newZone string = ""
	if me.dropdownW == nil {
		return
	}
	// try to compute the line item clicked here
	/*
		var ddtk *guiWidget
		ddtk = me.ddview.TK.(*guiWidget)
		value := mouseH - tk.gocuiSize.h0 - 1
		log.Log(NOW, "mouseUp() me.ddview.tk.gocuiSize.h1 =", tk.gocuiSize.h1)
		log.Log(NOW, "mouseUp() me.ddNode.vals =", ddtk.vals)
		valsLen := len(ddtk.vals)
		log.Log(NOW, "mouseUp() value =", value, "valsLen =", valsLen)
		log.Log(NOW, "mouseUp() me.ddNode.vals =", ddtk.vals)
		if (value >= 0) && (value < valsLen) {
			newZone = ddtk.vals[value]
			log.Log(NOW, "mouseUp() value =", value, "newZone =", newZone)
		}
	*/
	// send the event the user selected something from the dropdown
	hideDDview()
	me.dropdownW.SetText(newZone)
	me.myTree.SendUserEvent(me.dropdownW.node)
}