Prime/PrimeGui_Object.lua at master · ileben/Prime · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
--[[

====================================================
LibPrime
Author: Ivan Leben
====================================================

--]]


--Object
--=============================================================

function PrimeGui.Object_New( o )

	o.Init                  = PrimeGui.Object_Init;
	o.Free                  = PrimeGui.Object_Free;
	o.RegisterScript        = PrimeGui.Object_RegisterScript;
	o.UnregisterScript      = PrimeGui.Object_UnregisterScript;
	o.UnregisterAllScripts  = PrimeGui.Object_UnregisterAllScripts;
	o.InvokeScript          = PrimeGui.Object_InvokeScript;

	return o;
end

function PrimeGui.Object_Init( o )
end

function PrimeGui.Object_Free( o )
end

function PrimeGui.Object_RegisterScript( object, script, func )

	--Create callback table if missing
	if (object.callbacks == nil) then
		object.callbacks = {};
	end

	if (object.callbacks[ script ] == nil) then
		object.callbacks[ script ] = {};
	end

	--Check if function already registered
	local callbacks = object.callbacks[ script ];
	for i,f in ipairs( callbacks ) do
		if (f == func) then
			return
		end
	end

	--Add to callback table
	table.insert( callbacks, func );

	--Check for missing script handler
	if (object:GetScript( script ) == nil) then

		--Closure passes script name to invoke function along with other arguments
		local scriptClosure = function( object, ... )
			PrimeGui.Object_InvokeScript( object, script, ... );
		end

		--Set closure as script handler
		object:SetScript( script, scriptClosure );
	end
end

function PrimeGui.Object_UnregisterScript( object, script, func )

	--Must have valid callback table
	if (object.callbacks == nil) then
		return;
	end

	if (object.callbacks[ script ] == nil) then
		return
	end

	--Search for registered function
	local callbacks = object.callbacks[ script ];
	for i,f in ipairs( callbacks ) do
		if (f == func) then

			--Remove from callback table
			table.remove( callbacks, i );
		end
	end
end

function PrimeGui.Object_UnregisterAllScripts( object )

	--Must have valid callback table
	if (object.callbacks == nil) then
		return;
	end

	--Remove all callbacks from every callback tables
	for script,callbacks in pairs(object.callbacks) do
		PrimeUtil.ClearTable( callbacks );
	end
end

function PrimeGui.Object_InvokeScript( object, script, ... )

	--Must have valid callback table
	if (object.callbacks == nil) then
		return;
	end

	--Invoke all the callback functions
	local callbacks = object.callbacks[ script ];
	for i,func in ipairs( callbacks ) do
		func( object, ... );
	end
end