Trying to get NSPanel to expand downward.

panelAnimationExploration.js

let threadDictionary = NSThread.mainThread().threadDictionary()
let panelID = "com.betterTypePanel.panel"

if (threadDictionary[panelID]) {
  let panel = threadDictionary[panelID]
  panel.close()
  threadDictionary.removeObjectForKey(panelID)
}

var panelWidth = 312
var panelHeight = 210
let panel = NSPanel.alloc().init()
panel.setFrame_display(NSMakeRect(0, 0, panelWidth, panelHeight), true)
panel.setStyleMask(NSTexturedBackgroundWindowMask | NSTitledWindowMask | NSClosableWindowMask)
panel.title = "Testing"

panel.center()
panel.makeKeyAndOrderFront(null)
panel.setLevel(NSFloatingWindowLevel)

panel.standardWindowButton(NSWindowMiniaturizeButton).setHidden(true)
panel.standardWindowButton(NSWindowZoomButton).setHidden(true)

threadDictionary[panelID] = panel

let x1 = panel.frame().origin.x
let y1 = panel.frame().origin.y
panel.setFrame_display_animate(NSMakeRect(x1, y1, panelWidth, panelHeight + 50), true, true)

// Fix to get panel to animate downward
//panel.setFrame_display_animate(NSMakeRect(x1, y1 - 50, panelWidth, panelHeight + 50), true, true)