etoDialog.py

import scriptcontext
import rhinoscriptsyntax as rs
import clr
clr.AddReference("Eto")
clr.AddReference("Rhino.UI")

from Rhino.UI import *
from Eto.Forms import Form, Dialog, Label, TextBox, StackLayout, Orientation, Button, HorizontalAlignment, MessageBox, DropDown, CheckBox, TableLayout, StackLayoutItem, DynamicLayout, Control, Panel, Form
from Eto.Drawing import *

class CollapserControl(Panel):
    def __init__(self, isCollapsed):
        self.isCollapsed = isCollapsed
        self.isExpanded = not self.isCollapsed

    m_collapsableControl = Control()

    def collapserControl(Control, content):
        m_collapsableControl = content
        Content = null
        isCollapsed = true
        return

    def Collapse():
        Content = null
        isCollapsed = True
        return

    def Expand():
        Content = null #m_collapsableControl
        isCollapsed = False
        return

class MainForm(Form):
    def __init__(self):
        container = DynamicLayout()
        collapserButtons = StackLayout(Spacing = 5, Orientation = Orientation.Horizontal)
        collapserButtons.Items.Add(Button(Text = "btn1"))
        collapserButtons.Items.Add(Button(Text = "btn2"))
        collapserButtons.Items.Add(Button(Text = "btn3"))
        collapser = CollapserControl(collapserButtons)
        collapse = Button(Text="^")
        def collapse_click(sender,args):
            if collapser.isCollapsed:
                collapser.Expand()
            else:
                collapser.Collapse()
        collapse.Click += collapse_click

        container.AddRow(collapse)
        container.AddRow(collapser)
        Content = container