restructuring, preparing for new changes

ButtonBar.lua

@@ -0,0 +1,166 @@
+--[[ $Id$ ]]
+--[[ Generic Template for a Bar which contains Buttons ]]
+
+local Bar = Bartender4.Bar.prototype
+local ButtonBar = setmetatable({}, {__index = Bar})
+local ButtonBar_MT = {__index = ButtonBar}
+
+local defaults = Bartender4:Merge({
+	padding = 2,
+	rows = 1,
+	skin = {
+		ID = "DreamLayout",
+		Backdrop = true,
+		Gloss = 0,
+		Zoom = false,
+		Colors = {},
+	},
+}, Bartender4.Bar.defaults)
+
+Bartender4.ButtonBar = {}
+Bartender4.ButtonBar.prototype = ButtonBar
+Bartender4.ButtonBar.defaults = defaults
+
+local LBF = LibStub("LibButtonFacade", true)
+
+function Bartender4.ButtonBar:Create(id, config, name)
+	local bar = setmetatable(Bartender4.Bar:Create(id, config, name), ButtonBar_MT)
+	
+	if LBF then
+		bar.LBFGroup = LBF:Group("Bartender4", tostring(id))
+		bar.LBFGroup.SkinID = config.skin.ID or "Blizzard"
+		bar.LBFGroup.Backdrop = config.skin.Backdrop
+		bar.LBFGroup.Gloss = config.skin.Gloss
+		bar.LBFGroup.Colors = config.skin.Colors
+		
+		LBF:RegisterSkinCallback("Bartender4", self.SkinChanged, self)
+	end
+	
+	return bar
+end
+
+local barregistry = Bartender4.Bar.barregistry
+function Bartender4.ButtonBar:SkinChanged(SkinID, Gloss, Backdrop, Group, Button, Colors)
+	local bar = barregistry[tostring(Group)]
+	if not bar then return end
+	
+	bar:SkinChanged(SkinID, Gloss, Backdrop, Colors, Button)
+end
+
+function ButtonBar:ApplyConfig(config)
+	Bar.ApplyConfig(self, config)
+	-- any module inherting this template should call UpdateButtonLayout after setting up its buttons, we cannot call it here
+	--self:UpdateButtonLayout()
+end
+
+-- get the current padding
+function ButtonBar:GetPadding()
+	return self.config.padding
+end
+
+-- set the padding and refresh layout
+function ButtonBar:SetPadding(pad)
+	if pad ~= nil then
+		self.config.padding = pad
+	end
+	self:UpdateButtonLayout()
+end
+
+
+-- get the current number of rows
+function ButtonBar:GetRows()
+	return self.config.rows
+end
+
+-- set the number of rows and refresh layout
+function ButtonBar:SetRows(rows)
+	if rows ~= nil then
+		self.config.rows = rows
+	end
+	self:UpdateButtonLayout()
+end
+
+function ButtonBar:GetZoom()
+	return self.config.skin.Zoom
+end
+
+function ButtonBar:SetZoom(zoom)
+	self.config.skin.Zoom = zoom
+	self:UpdateButtonLayout()
+end
+
+local math_floor = math.floor
+-- align the buttons and correct the size of the bar overlay frame
+ButtonBar.button_width = 36
+ButtonBar.button_height = 36
+function ButtonBar:UpdateButtonLayout()
+	local buttons = self.buttons
+	local pad = self:GetPadding()
+	
+	local numbuttons = self.numbuttons or #buttons
+	
+	-- bail out if the bar has no buttons, for whatever reason
+	-- (eg. stanceless class, or no stances learned yet, etc.)
+	if numbuttons == 0 then return end
+	
+	local Rows = self:GetRows()
+	local ButtonPerRow = math_floor(numbuttons / Rows + 0.5) -- just a precaution
+	Rows = math_floor(numbuttons / ButtonPerRow + 0.5)
+	if Rows > numbuttons then 
+		Rows = numbuttons 
+		ButtonPerRow = 1
+	end
+	
+	self:SetSize((self.button_width + pad) * ButtonPerRow - pad + 8, (self.button_height + pad) * Rows - pad + 8)
+	
+	-- anchor button 1 to the topleft corner of the bar
+	buttons[1]:ClearSetPoint("TOPLEFT", self, "TOPLEFT", 5, -3)
+	-- and anchor all other buttons relative to our button 1
+	for i = 2, numbuttons do
+		-- jump into a new row
+		if ((i-1) % ButtonPerRow) == 0 then
+			buttons[i]:ClearSetPoint("TOPLEFT", buttons[i-ButtonPerRow], "BOTTOMLEFT", 0, -pad)
+		-- align to the previous button
+		else
+			buttons[i]:ClearSetPoint("TOPLEFT", buttons[i-1], "TOPRIGHT", pad, 0)
+		end
+	end
+	
+	if not LBF then
+		for i = 1, #buttons do
+			local button = buttons[i]
+			if button.icon and self.config.skin.Zoom then
+				button.icon:SetTexCoord(0.07,0.93,0.07,0.93)
+			elseif button.icon then
+				button.icon:SetTexCoord(0,1,0,1)
+			end
+		end
+	end
+end
+
+function ButtonBar:SkinChanged(SkinID, Gloss, Backdrop, Colors)
+	self.config.skin.ID = SkinID
+	self.config.skin.Gloss = Gloss
+	self.config.skin.Backdrop = Backdrop
+	self.config.skin.Colors = Colors
+end
+
+--[[===================================================================================
+	Utility function
+===================================================================================]]--
+
+-- get a iterator over all buttons
+function ButtonBar:GetAll()
+	return pairs(self.buttons)
+end
+
+-- execute a member function on all buttons
+function ButtonBar:ForAll(method, ...)
+	if not self.buttons then return end
+	for _, button in self:GetAll() do
+		local func = button[method]
+		if func then
+			func(button, ...)
+		end
+	end
+end