• 

MAX_RAID_GROUPS = 8;


local frameCreationSpecifiers = {
	raid = { mapping = UnitGUID, setUpFunc = DefaultCompactUnitFrameSetup, updateList = "normal"},
	pet =  { setUpFunc = DefaultCompactMiniFrameSetup, updateList = "mini" },
	flagged = { mapping = UnitGUID, setUpFunc = DefaultCompactUnitFrameSetup, updateList = "normal"	},
	target = { setUpFunc = DefaultCompactMiniFrameSetup, updateList = "mini" },
}

--Widget Handlers
function CompactRaidFrameContainer_OnLoad(self)
	FlowContainer_Initialize(self);	--Congrats! We are now a certified FlowContainer.
	
	self:SetClampRectInsets(0, 200 - self:GetWidth(), 10, 0);
	
	self.raidUnits = {--[["raid1", "raid2", "raid3", ..., "raid40"]]};
	for i=1, MAX_RAID_MEMBERS do
		tinsert(self.raidUnits, "raid"..i);
	end
	self.partyUnits = { "player" };
	for i=1, MAX_PARTY_MEMBERS do
		tinsert(self.partyUnits, "party"..i);
	end
	CompactRaidFrameContainer_UpdateDisplayedUnits(self);
	
	self:RegisterEvent("GROUP_ROSTER_UPDATE");
	self:RegisterEvent("UNIT_PET");
	
	local unitFrameReleaseFunc = function(frame)
													CompactUnitFrame_SetUnit(frame, nil);
												end;
	self.frameReservations = {
		raid		= CompactRaidFrameReservation_NewManager(unitFrameReleaseFunc);
		pet		= CompactRaidFrameReservation_NewManager(unitFrameReleaseFunc);
		flagged	= CompactRaidFrameReservation_NewManager(unitFrameReleaseFunc);	--For Main Tank/Assist units
		target	= CompactRaidFrameReservation_NewManager(unitFrameReleaseFunc);	--Target of target for Main Tank/Main Assist
	}
	
	self.frameUpdateList = {
		normal = {},	--Groups are also in this normal list.
		mini = {},
		group = {},
	}

	self.unitFrameUnusedFunc = function(frame)
													frame.inUse = false;
												end;
												
	self.displayPets = true;
	self.displayFlaggedMembers = true;
end

function CompactRaidFrameContainer_OnEvent(self, event, ...)
	if ( event == "GROUP_ROSTER_UPDATE" ) then
		CompactRaidFrameContainer_UpdateDisplayedUnits(self);
		CompactRaidFrameContainer_TryUpdate(self);
	elseif ( event == "UNIT_PET" ) then
		if ( self.displayPets ) then
			local unit = ...;
			if ( unit == "player" or strsub(unit, 1, 4) == "raid" or strsub(unit, 1, 5) == "party" ) then
				CompactRaidFrameContainer_TryUpdate(self);
			end
		end
	end
end

function CompactRaidFrameContainer_OnSizeChanged(self)
	FlowContainer_DoLayout(self);
	CompactRaidFrameContainer_UpdateBorder(self);
end

--Externally used functions
function CompactRaidFrameContainer_SetGroupMode(self, groupMode)
	self.groupMode = groupMode;
	CompactRaidFrameContainer_TryUpdate(self);
end

function CompactRaidFrameContainer_SetFlowFilterFunction(self, flowFilterFunc)
	--Usage: flowFilterFunc is called as flowFilterFunc("unittoken") and should return whether this frame should be displayed or not.
	self.flowFilterFunc = flowFilterFunc;
	CompactRaidFrameContainer_TryUpdate(self);
end

function CompactRaidFrameContainer_SetGroupFilterFunction(self, groupFilterFunc)
	--Usage: groupFilterFunc is called as groupFilterFunc(groupNum) and should return whether this group should be displayed or not.
	self.groupFilterFunc = groupFilterFunc;
	CompactRaidFrameContainer_TryUpdate(self);
end

function CompactRaidFrameContainer_SetFlowSortFunction(self, flowSortFunc)
	--Usage: Takes two tokens, should work as a Lua sort function.
	--The ordering must be well-defined, even across units that will be filtered out
	self.flowSortFunc = flowSortFunc;
	CompactRaidFrameContainer_TryUpdate(self);
end

function CompactRaidFrameContainer_SetDisplayPets(self, displayPets)
	if ( self.displayPets ~= displayPets ) then
		self.displayPets = displayPets;
		CompactRaidFrameContainer_TryUpdate(self);
	end
end

function CompactRaidFrameContainer_SetDisplayMainTankAndAssist(self, displayFlaggedMembers)
	if ( self.displayFlaggedMembers ~= displayFlaggedMembers ) then
		self.displayFlaggedMembers = displayFlaggedMembers;
		CompactRaidFrameContainer_TryUpdate(self);
	end
end

function CompactRaidFrameContainer_SetBorderShown(self, showBorder)
	self.showBorder = showBorder;
	CompactRaidFrameContainer_UpdateBorder(self);
end

function CompactRaidFrameContainer_ApplyToFrames(self, updateSpecifier, func, ...)
	for specifier, list in pairs(self.frameUpdateList) do
		if ( updateSpecifier == "all" or specifier == updateSpecifier ) then
			for i=1, #list do
				list[i]:applyFunc(updateSpecifier, func, ...);
			end
		end
	end
end

--Internally used functions
function CompactRaidFrameContainer_TryUpdate(self)
	if ( CompactRaidFrameContainer_ReadyToUpdate(self) ) then
		CompactRaidFrameContainer_LayoutFrames(self);
	end
end

function CompactRaidFrameContainer_ReadyToUpdate(self)
	if ( not self.groupMode ) then
		return false;
	end
	if ( self.groupMode == "flush" and not (self.flowFilterFunc and self.flowSortFunc) ) then
		return false;
	end
	if ( self.groupMode == "discrete" and not self.groupFilterFunc ) then
		return false;
	end
	
	return true;
end

function CompactRaidFrameContainer_UpdateDisplayedUnits(self)
	if ( IsInRaid() ) then
		self.units = self.raidUnits;
	else
		self.units = self.partyUnits;
	end
end

function CompactRaidFrameContainer_LayoutFrames(self)
	--First, mark everything we currently use as unused. We'll hide all the ones that are still unused at the end of this function. (On release)
	for i=1, #self.flowFrames do
		if ( type(self.flowFrames[i]) == "table" and self.flowFrames[i].unusedFunc ) then
			self.flowFrames[i]:unusedFunc();
		end
	end
	FlowContainer_RemoveAllObjects(self);
	
	FlowContainer_PauseUpdates(self);	--We don't want to update it every time we add an item.
	
	
	if ( self.displayFlaggedMembers ) then
		CompactRaidFrameContainer_AddFlaggedUnits(self);
		FlowContainer_AddLineBreak(self);
	end
	
	if ( self.groupMode == "discrete" ) then
		CompactRaidFrameContainer_AddGroups(self);
	elseif ( self.groupMode == "flush" ) then
		CompactRaidFrameContainer_AddPlayers(self);
	else
		error("Unknown group mode");
	end
	
	if ( self.displayPets ) then
		CompactRaidFrameContainer_AddPets(self);
	end
	
	FlowContainer_ResumeUpdates(self);
	
	CompactRaidFrameContainer_UpdateBorder(self);
	
	CompactRaidFrameContainer_ReleaseAllReservedFrames(self);
end

function CompactRaidFrameContainer_UpdateBorder(self)
	local usedX, usedY = FlowContainer_GetUsedBounds(self);
	if ( self.showBorder and self.groupMode ~= "discrete" and usedX > 0 and usedY > 0 ) then
		self.borderFrame:SetSize(usedX + 11, usedY + 13);
		self.borderFrame:Show();
	else
		self.borderFrame:Hide();
	end
end

do
	local usedGroups = {}; --Enclosure to make sure usedGroups isn't used anywhere else.
	function CompactRaidFrameContainer_AddGroups(self)
	
		if ( IsInRaid() ) then
			RaidUtil_GetUsedGroups(usedGroups);
			
			for groupNum, isUsed in ipairs(usedGroups) do
				if ( isUsed and self.groupFilterFunc(groupNum) ) then
					CompactRaidFrameContainer_AddGroup(self, groupNum);
				end
			end
		else
			CompactRaidFrameContainer_AddGroup(self, "PARTY");
		end
		FlowContainer_SetOrientation(self, "vertical")
	end
	
end

function CompactRaidFrameContainer_AddGroup(self, id)

	local groupFrame, didCreation;
	if ( type(id) == "number" ) then
		groupFrame, didCreation = CompactRaidGroup_GenerateForGroup(id);
	elseif ( id == "PARTY" ) then
		groupFrame, didCreation = CompactPartyFrame_Generate();
	else
		GMError("Unknown id");
	end
	
	groupFrame:SetParent(self);
	groupFrame:SetFrameStrata("LOW");
	groupFrame.unusedFunc = groupFrame.Hide;
	if ( didCreation ) then
		tinsert(self.frameUpdateList.normal, groupFrame);
		tinsert(self.frameUpdateList.group, groupFrame);
	end
	FlowContainer_AddObject(self, groupFrame);
	groupFrame:Show();
end

function CompactRaidFrameContainer_AddPlayers(self)
	--First, sort the players we're going to use
	assert(self.flowSortFunc);	--No sort function defined! Call CompactRaidFrameContainer_SetFlowSortFunction.
	assert(self.flowFilterFunc);	--No filter function defined! Call CompactRaidFrameContainer_SetFlowFilterFunction.
	
	table.sort(self.units, self.flowSortFunc);
	
	for i=1, #self.units do
		local unit = self.units[i];
		if ( self.flowFilterFunc(unit) ) then
			CompactRaidFrameContainer_AddUnitFrame(self, unit, "raid");
		end
	end
	
	FlowContainer_SetOrientation(self, "vertical")
end

function CompactRaidFrameContainer_AddPets(self)
	if ( IsInRaid() ) then
		for i=1, MAX_RAID_MEMBERS do
			local unit = "raidpet"..i;
			if ( UnitExists(unit) ) then
				CompactRaidFrameContainer_AddUnitFrame(self, unit, "pet");
			end
		end
	else
		--Add the player's pet.
		if ( UnitExists("pet") ) then
			CompactRaidFrameContainer_AddUnitFrame(self, "pet", "pet");
		end
		for i=1, GetNumSubgroupMembers() do
			local unit = "partypet"..i;
			if ( UnitExists(unit) ) then
				CompactRaidFrameContainer_AddUnitFrame(self, unit, "pet");
			end
		end
	end
end

local flaggedRoles = { "MAINTANK", "MAINASSIST" };
function CompactRaidFrameContainer_AddFlaggedUnits(self)
	if ( not IsInRaid() ) then
		return;
	end
	for roleIndex = 1, #flaggedRoles do
		local desiredRole = flaggedRoles[roleIndex]
		for i=1, MAX_RAID_MEMBERS do
			local unit = "raid"..i;
			local name, rank, subgroup, level, class, fileName, zone, online, isDead, role, isML = GetRaidRosterInfo(i);
			if ( role == desiredRole ) then
				FlowContainer_BeginAtomicAdd(self);	--We want each unit to be right next to its target and target of target.
				
				CompactRaidFrameContainer_AddUnitFrame(self, unit, "flagged");
				
				--If we want to display the tank/assist target...
				local targetFrame = CompactRaidFrameContainer_AddUnitFrame(self, unit.."target", "target");
				CompactUnitFrame_SetUpdateAllOnUpdate(targetFrame, true);
				
				--Target of target?
				local targetOfTargetFrame = CompactRaidFrameContainer_AddUnitFrame(self, unit.."targettarget", "target");
				CompactUnitFrame_SetUpdateAllOnUpdate(targetOfTargetFrame, true);
				
				--Add some space before the next one.
				--FlowContainer_AddSpacer(self, 36);
				
				FlowContainer_EndAtomicAdd(self);
			end
		end
	end		
end

--Utility Functions
function CompactRaidFrameContainer_AddUnitFrame(self, unit, frameType)
	local frame = CompactRaidFrameContainer_GetUnitFrame(self, unit, frameType);
	CompactUnitFrame_SetUnit(frame, unit);
	FlowContainer_AddObject(self, frame);
	
	return frame;
end

local function applyFunc(unitFrame, updateSpecifier, func, ...)
	func(unitFrame, ...);
end

local unitFramesCreated = 0;
function CompactRaidFrameContainer_GetUnitFrame(self, unit, frameType)
	local info = frameCreationSpecifiers[frameType];
	assert(info);
	assert(info.setUpFunc);
	
	--Get the mapping for re-using frames
	local mapping;
	if ( info.mapping ) then
		mapping = info.mapping(unit);
	else
		mapping = unit;
	end
	
	local frame = CompactRaidFrameReservation_GetFrame(self.frameReservations[frameType], mapping);
	if ( not frame ) then
		unitFramesCreated = unitFramesCreated + 1;
		frame = CreateFrame("Button", "CompactRaidFrame"..unitFramesCreated, self, "CompactUnitFrameTemplate");
		frame.applyFunc = applyFunc;
		CompactUnitFrame_SetUpFrame(frame, info.setUpFunc);
		CompactUnitFrame_SetUpdateAllEvent(frame, "GROUP_ROSTER_UPDATE");
		frame.unusedFunc = self.unitFrameUnusedFunc;
		tinsert(self.frameUpdateList[info.updateList], frame);
		CompactRaidFrameReservation_RegisterReservation(self.frameReservations[frameType], frame, mapping);
	end
	frame.inUse = true;
	return frame;
end

function CompactRaidFrameContainer_ReleaseAllReservedFrames(self)
	for key, reservations in pairs(self.frameReservations) do
		CompactRaidFrameReservation_ReleaseUnusedReservations(reservations);
	end
end

function RaidUtil_GetUsedGroups(tab)	--Fills out the table with which groups have people.
	for i=1, MAX_RAID_GROUPS do
		tab[i] = false;
	end
	if ( IsInRaid() ) then
		for i=1, GetNumGroupMembers() do
			local name, rank, subgroup = GetRaidRosterInfo(i);
			tab[subgroup] = true;
		end
	end
	return tab;
end

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