--[[-----------------------------------------------------------------------------
Icon Widget
-------------------------------------------------------------------------------]]
local Type, Version = 'Icon', 20
local AceGUI = LibStub and LibStub('AceGUI-3.0', true)
if not AceGUI or (AceGUI:GetWidgetVersion(Type) or 0) >= Version then
  return
end

-- Lua APIs
local select, pairs, print = select, pairs, print

-- WoW APIs
local CreateFrame, UIParent, GetBuildInfo = CreateFrame, UIParent, GetBuildInfo

--[[-----------------------------------------------------------------------------
Scripts
-------------------------------------------------------------------------------]]
local function Control_OnEnter(frame)
  frame.obj:Fire('OnEnter')
end

local function Control_OnLeave(frame)
  frame.obj:Fire('OnLeave')
end

local function Button_OnClick(frame, button)
  frame.obj:Fire('OnClick', button)
  AceGUI:ClearFocus()
end

--[[-----------------------------------------------------------------------------
Methods
-------------------------------------------------------------------------------]]
local methods = {
  ['OnAcquire'] = function(self)
    self:SetHeight(110)
    self:SetWidth(110)
    self:SetLabel()
    self:SetImage(nil)
    self:SetImageSize(64, 64)
    self:SetDisabled(false)
  end,

  -- ["OnRelease"] = nil,

  ['SetLabel'] = function(self, text)
    if text and text ~= '' then
      self.label:Show()
      self.label:SetText(text)
      self:SetHeight(self.image:GetHeight() + 25)
    else
      self.label:Hide()
      self:SetHeight(self.image:GetHeight() + 10)
    end
  end,

  ['SetImage'] = function(self, path, ...)
    local image = self.image
    image:SetTexture(path)

    if image:GetTexture() then
      local n = select('#', ...)
      if n == 4 or n == 8 then
        image:SetTexCoord(...)
      else
        image:SetTexCoord(0, 1, 0, 1)
      end
    end
  end,

  ['SetImageSize'] = function(self, width, height)
    self.image:SetWidth(width)
    self.image:SetHeight(height)
    --self.frame:SetWidth(width + 30)
    if self.label:IsShown() then
      self:SetHeight(height + 25)
    else
      self:SetHeight(height + 10)
    end
  end,

  ['SetDisabled'] = function(self, disabled)
    self.disabled = disabled
    if disabled then
      self.frame:Disable()
      self.label:SetTextColor(0.5, 0.5, 0.5)
      self.image:SetVertexColor(0.5, 0.5, 0.5, 0.5)
    else
      self.frame:Enable()
      self.label:SetTextColor(1, 1, 1)
      self.image:SetVertexColor(1, 1, 1)
    end
  end,
}

--[[-----------------------------------------------------------------------------
Constructor
-------------------------------------------------------------------------------]]
local function Constructor()
  local frame = CreateFrame('Button', nil, UIParent)
  frame:Hide()

  frame:EnableMouse(true)
  frame:SetScript('OnEnter', Control_OnEnter)
  frame:SetScript('OnLeave', Control_OnLeave)
  frame:SetScript('OnClick', Button_OnClick)

  local label = frame:CreateFontString(nil, 'BACKGROUND', 'GameFontHighlight')
  label:SetPoint('BOTTOMLEFT')
  label:SetPoint('BOTTOMRIGHT')
  label:SetJustifyH('CENTER')
  label:SetJustifyV('TOP')
  label:SetHeight(18)

  local image = frame:CreateTexture(nil, 'BACKGROUND')
  image:SetWidth(64)
  image:SetHeight(64)
  image:SetPoint('TOP', 0, -5)

  local highlight = frame:CreateTexture(nil, 'HIGHLIGHT')
  highlight:SetAllPoints(image)
  highlight:SetTexture('Interface\\PaperDollInfoFrame\\UI-Character-Tab-Highlight')
  highlight:SetTexCoord(0, 1, 0.23, 0.77)
  highlight:SetBlendMode('ADD')

  local widget = {
    label = label,
    image = image,
    frame = frame,
    type = Type,
  }
  for method, func in pairs(methods) do
    widget[method] = func
  end
  -- SetText is deprecated, but keep it around for a while. (say, to WoW 4.0)
  if select(4, GetBuildInfo()) < 40000 then
    widget.SetText = widget.SetLabel
  else
    widget.SetText = function(self, ...)
      print('AceGUI-3.0-Icon: SetText is deprecated! Use SetLabel instead!')
      self:SetLabel(...)
    end
  end

  return AceGUI:RegisterAsWidget(widget)
end

AceGUI:RegisterWidgetType(Type, Constructor, Version)
