if not WeakAuras.IsLibsOK() then return end

local Type, Version = "WeakAurasNewHeaderButton", 21
local AceGUI = LibStub and LibStub("AceGUI-3.0", true)
if not AceGUI or (AceGUI:GetWidgetVersion(Type) or 0) >= Version then return end

local L = WeakAuras.L;

local function Hide_Tooltip()
  GameTooltip:Hide();
end

local function Show_Tooltip(owner, line1, line2)
  GameTooltip:SetOwner(owner, "ANCHOR_NONE");
  GameTooltip:SetPoint("LEFT", owner, "RIGHT");
  GameTooltip:ClearLines();
  GameTooltip:AddLine(line1);
  GameTooltip:AddLine(line2, 1, 1, 1, 1);
  GameTooltip:Show();
end

--[[-----------------------------------------------------------------------------
Methods
-------------------------------------------------------------------------------]]
local methods = {
  ["OnAcquire"] = function(self)
    self:SetWidth(1000);
    self:SetHeight(20);
  end,
  ["SetText"] = function(self, text)
    self.frame:SetText(" "..text);
  end,
  ["SetDescription"] = function(self, description)
    self.frame.description = description;
  end,
  ["SetClick"] = function(self, func)
    self.frame:SetScript("OnClick", func);
  end,
  ["Disable"] = function(self)
    self.frame:Disable();
  end,
  ["Enable"] = function(self)
    self.frame:Enable();
  end,
  ["Pick"] = function(self)
    self.frame:LockHighlight();
  end,
  ["ClearPick"] = function(self)
    self.frame:UnlockHighlight();
  end
}

--[[-----------------------------------------------------------------------------
Constructor
-------------------------------------------------------------------------------]]

local function Constructor()
  local name = Type..AceGUI:GetNextWidgetNum(Type)
  local button = CreateFrame("Button", name, UIParent, "OptionsListButtonTemplate");
  button:SetHeight(20);
  button:SetWidth(1000);
  button:SetDisabledFontObject("GameFontNormal");

  local background = button:CreateTexture(nil, "BACKGROUND");
  button.background = background;
  background:SetTexture("Interface\\BUTTONS\\UI-Listbox-Highlight2.blp");
  background:SetBlendMode("ADD");
  background:SetVertexColor(0.5, 0.5, 0.5, 0.25);
  background:SetAllPoints(button);

  button:SetScript("OnEnter", function() Show_Tooltip(button, button:GetText():sub(2), button.description or L["Add a new display"]) end);
  button:SetScript("OnLeave", Hide_Tooltip);

  local widget = {
    frame = button,
    type = Type
  }
  for method, func in pairs(methods) do
    widget[method] = func
  end

  return AceGUI:RegisterAsWidget(widget)
end

AceGUI:RegisterWidgetType(Type, Constructor, Version)