gocui/widget.go

package main

import (
	"go.wit.com/log"
	"go.wit.com/toolkits/tree"
	"go.wit.com/widget"
)

func initWidget(n *tree.Node) *guiWidget {
	var w *guiWidget
	w = new(guiWidget)
	// Set(w, "default")

	w.frame = true

	// set the name used by gocui to the id
	w.cuiName = string(n.WidgetId)

	w.node = n
	w.WidgetType = n.WidgetType

	if n.WidgetType == widget.Root {
		log.Log(INFO, "setupWidget() FOUND ROOT w.id =", n.WidgetId)
		// me.treeRoot = n
	}

	if n.WidgetType == widget.Grid {
		w.widths = make(map[int]int)  // how tall each row in the grid is
		w.heights = make(map[int]int) // how wide each column in the grid is
	}

	p := n.Parent
	if p == nil {
		log.Log(ERROR, "parent == nil", w.String(), n.WidgetId, w.WidgetType)
		return w
	}
	if p.TK == nil {
		log.Log(ERROR, "parent.TK == nil", w.String(), n.WidgetId, w.WidgetType)
		return w
	}

	// set the parent and append to parent children
	var ptk *guiWidget
	ptk = p.TK.(*guiWidget)
	w.parent = ptk
	ptk.children = append(ptk.children, w)
	return w
}

func setupCtrlDownWidget() {
	a := new(widget.Action)
	a.ProgName = "ctrlDown"
	a.WidgetType = widget.Dialog
	a.WidgetId = -1
	a.ParentId = 0
	// n := addNode(a)
	n := me.myTree.AddNode(a)

	me.ctrlDown = n
}

func (w *guiWidget) deleteView() {
	if w.v != nil {
		w.v.Visible = false
		return
	}
	// make sure the view isn't really there
	me.baseGui.DeleteView(w.cuiName)
	w.v = nil
}

/*
// searches the binary tree for a WidgetId
func findWidgetName(n *tree.Node, name string) *node {
	if n == nil {
		return nil
	}

	if n.tk.cuiName == name {
		return n
	}

	for _, child := range n.children {
		newN := child.findWidgetName(name)
		if newN != nil {
			return newN
		}
	}
	return nil
}
*/

func (w *guiWidget) IsCurrent() bool {
	if w.node.WidgetType == widget.Tab {
		return w.isCurrent
	}
	if w.node.WidgetType == widget.Window {
		return w.isCurrent
	}
	if w.node.WidgetType == widget.Root {
		return false
	}
	return w.parent.IsCurrent()
}

func (tk *guiWidget) String() string {
	return tk.progname
}

func (tk *guiWidget) Visible() bool {
	if tk == nil {
		return false
	}
	if tk.v == nil {
		return false
	}
	return tk.v.Visible
}

func Visible(n *tree.Node) bool {
	if n == nil {
		return false
	}
	if n.TK == nil {
		return false
	}
	var w *guiWidget
	w = n.TK.(*guiWidget)
	return w.Visible()
}

func (w *guiWidget) SetVisible(b bool) {
	if w.v == nil {
		return
	}
	w.v.Visible = b
}

func SetVisible(n *tree.Node, b bool) {
	if n == nil {
		return
	}
	if n.TK == nil {
		return
	}
	var w *guiWidget
	w = n.TK.(*guiWidget)
	if w.v == nil {
		return
	}
	w.v.Visible = b
}

func addDropdown() *tree.Node {
	n := new(tree.Node)
	n.WidgetType = widget.Flag
	n.WidgetId = -2
	n.ParentId = 0

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

	// copy the data from the action message
	tk.progname = "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 {
		tk.parent.children = append(tk.parent.children, tk)
	}

	n.TK = tk
	return n
}