Back to Home

ESO Lua File v101043

libraries/globals/globalapi.lua

[◄ back to folders ]
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
-- Cached versions of the lua library functions
ZO_PI = math.pi
ZO_TWO_PI = ZO_PI * 2
ZO_HALF_PI = ZO_PI / 2
ZO_INTEGER_53_MAX_BITS = 53
zo_strlower         = LocaleAwareToLower
zo_strupper         = LocaleAwareToUpper
string.lowerbybyte  = string.lower
string.upperbybyte  = string.upper
string.lower        = zo_strlower
string.upper        = zo_strupper
zo_strsub           = string.sub
zo_strgsub          = string.gsub
zo_strlen           = string.len
zo_strmatch         = string.match
zo_strgmatch        = string.gmatch
zo_strfind          = string.find
zo_strsplit         = SplitString
zo_loadstring       = LoadString
zo_deg              = math.deg
zo_rad              = math.rad
zo_floor            = math.floor
zo_ceil             = math.ceil
zo_mod              = math.fmod
zo_decimalsplit     = math.modf
zo_abs              = math.abs
zo_max              = math.max
zo_min              = math.min
zo_sqrt             = math.sqrt
zo_pow              = math.pow
zo_cos              = math.cos
zo_sin              = math.sin
zo_tan              = math.tan
zo_atan2            = math.atan2
zo_randomseed       = math.randomseed
zo_random           = math.random
    return zo_lerp(min, max, zo_random())
end
function zo_insecurePairs(t)
    return zo_insecureNext, t, nil
end
function zo_sign(value)
    if value == 0 then
        return 0
    end
    return value > 0 and 1 or -1
end
local function DefaultComparator(left, _, right)
    return left - right
end
function zo_binarysearch(searchData, dataList, comparator)
    local low, high = 1, #dataList
    local mid = 0
    
    while low <= high do
        mid = zo_floor( (low + high) / 2)
        local compareVal = comparator(searchData, dataList[mid], mid)        
        if(compareVal == 0) then
            return true, mid
        elseif(compareVal < 0) then
            high = mid - 1
        else
            low = mid + 1
        end
    end
    
    high = zo_max(high, 1)
    local numEntries = #dataList
    while(high <= numEntries) do
        if(comparator(searchData, dataList[high], high) < 0) then
            return false, high
        end
        high = high + 1
    end
    
    return false, high
end
function zo_binaryinsert(item, searchData, dataList, comparator)
    local _, insertPosition = zo_binarysearch(searchData, dataList, comparator)
    table.insert(dataList, insertPosition, item)
end
function zo_binaryremove(searchData, dataList, comparator)
    local found, removePosition = zo_binarysearch(searchData, dataList, comparator)
    if found then
        table.remove(dataList, removePosition)
    end
end
function zo_clamp(value, minimum, maximum)
    if(value <= minimum) then return minimum end
    if(value >= maximum) then return maximum end
    return value
end
function zo_saturate(value)
    return zo_clamp(value, 0.0, 1.0)
end
function zo_round(value)
    return (value >= 0) and zo_floor(value + 0.5) or zo_ceil(value - 0.5)
end
function zo_roundToZero(value, precision)
    if precision == 0 then
        return value
    end
    precision = precision or 1
    local roundFunction = (value > 0) and zo_floor or zo_ceil
    return roundFunction(value * (1 / precision)) * precision
end
function zo_roundToEven(value, precision)
    if precision == 0 then
        return value
    end
    precision = precision or 1
    local floorValue = zo_floor(value * (1 / precision))
    if floorValue % 2 == 0 then
        return floorValue * precision
    else
        return (floorValue + 1) * precision
    end
end
function zo_roundToNearest(value, precision)
    if precision == 0 then
        return value
    end
    return zo_round(value * (1 / precision)) * precision
end
function zo_strjoin(separator, ...)
    return table.concat({...}, separator)
end
-- Expected range for amount: [0, 1]
function zo_lerp(from, to, amount)
    return from + amount * (to - from)
end
-- Expected range for amount: [0, 1]
function zo_lerpVector(from, to, amount)
    local numElements = #from
    local interpolatedElements = {}
    for index = 1, numElements do
        interpolatedElements[index] = from[index] + amount * (to[index] - from[index])
    end
    return interpolatedElements
end
end
function zo_deltaNormalizedLerp(from, to, amount)
    return zo_lerp(from, to, 1 - math.pow(1 - amount, GetFrameDeltaNormalizedForTargetFramerate()))
end
function zo_percentBetween(startValue, endValue, value)
    if startValue == endValue then
        return 0.0
    end
    return (value - startValue) / (endValue - startValue);
end
function zo_clampedPercentBetween(startValue, endValue, value)
    return zo_saturate(zo_percentBetween(startValue, endValue, value))
end
function zo_floatsAreEqual(a, b, epsilon)
    epsilon = epsilon or 0.001
    return(zo_abs(a - b) <= epsilon)
end
-- Parses the first unsigned integer from a string or returns s if s is not a string.
    if type(s) == "string" then
        return tonumber(s:match("(%d+)"))
    end
    return s
end
function zo_iconFormat(path, width, height)
    return string.format("|t%s:%s:%s|t", tostring(width), tostring(height), path)
end
function zo_iconFormatInheritColor(path, width, height)
    return string.format("|t%s:%s:%s:inheritcolor|t", tostring(width), tostring(height), path)
end
function zo_iconTextFormat(path, width, height, text, inheritColor)
    local iconFormatter = zo_iconFormat
    if inheritColor then
    end
    return string.format("%s %s", iconFormatter(path, width, height), zo_strformat("<<1>>", text))
end
function zo_iconTextFormatNoSpace(path, width, height, text, inheritColor)
    local iconFormatter = zo_iconFormat
    if inheritColor then
    end
    return string.format("%s%s", iconFormatter(path, width, height), zo_strformat("<<1>>", text))
end
function zo_iconTextFormatNoSpaceAlignedRight(path, width, height, text, inheritColor)
    local iconFormatter = zo_iconFormat
    if inheritColor then
    end
    return string.format("%s%s", zo_strformat("<<1>>", text), iconFormatter(path, width, height))
end
function zo_bulletFormat(label, text)
    local bulletSpacer = GetString(SI_FORMAT_BULLET_SPACING)
    local bulletSpacingWidth = label:GetStringWidth(bulletSpacer)
    label:SetNewLineX(bulletSpacingWidth)
    label:SetText(zo_strformat(SI_FORMAT_BULLET_TEXT, text))
end
   return string.format("|L0:0:0:45%%:8%%:ignore|l%s|l", text)
end
function zo_callHandler(object, handler, ...)
    local handlerFunction = object:GetHandler(handler)
    if handlerFunction then
        handlerFunction(object, ...)
        return true
    end
    return false
end
local ZO_CallLaterId = 1
function zo_callLater(func, ms)
    local id = ZO_CallLaterId
    local name = "CallLaterFunction"..id
    ZO_CallLaterId = ZO_CallLaterId + 1
    EVENT_MANAGER:RegisterForUpdate(name, ms,
        function()
            EVENT_MANAGER:UnregisterForUpdate(name)
            func(id)
        end)
    return id
end
function zo_removeCallLater(id)
    EVENT_MANAGER:UnregisterForUpdate("CallLaterFunction"..id)
end
do
    local workingTable = {}
    function zo_replaceInVarArgs(indexToReplace, itemToReplaceWith, ...)
        for i = 1, select("#", ...) do
            if i == indexToReplace then
                workingTable[i] = itemToReplaceWith
            else
                workingTable[i] = select(i, ...)
            end
        end
        return unpack(workingTable, 1, select("#", ...))
    end
end
function zo_mixin(object, ...)
    for i = 1, select("#", ...) do
        local source = select(i, ...)
        for k,v in pairs(source) do
            object[k] = v
        end
    end
end
function zo_forwardArcSize(startAngle, angle)
    return (angle - startAngle) % ZO_TWO_PI
end
function zo_backwardArcSize(startAngle, angle)
    return ZO_TWO_PI - zo_forwardArcSize(startAngle, angle)
end
function zo_arcSize(startAngle, angle)
    return zo_min(zo_forwardArcSize(startAngle, angle), zo_backwardArcSize(startAngle, angle))
end
-- id64s are stored as lua Number type, and sometimes generate the same hash key for very similar numbers.
-- Use this function to get unique hash key for a given id64.
function zo_getSafeId64Key(id)
    return Id64ToString(id)
end
function zo_distance(x1, y1, x2, y2)
    local diffX = x1 - x2
    local diffY = y1 - y2
    return zo_sqrt(diffX * diffX + diffY * diffY)
end
function zo_distance3D(x1, y1, z1, x2, y2, z2)
    local diffX = x1 - x2
    local diffY = y1 - y2
    local diffZ = z1 - z2
    return zo_sqrt(diffX * diffX + diffY * diffY + diffZ * diffZ)
end
function zo_normalize(value, min, max)
    return (value - min) / (max - min)
end
function zo_clampLength2D(x, y, maxLength)
    local distance = zo_sqrt(x * x + y * y)
    if distance == 0 then
        -- there is no valid angle for a 0-length vector
        return 0, 0
    end
    local angleRadians = math.atan2(y, x)
    distance = zo_clamp(distance, 0, maxLength)
    return math.cos(angleRadians) * distance, math.sin(angleRadians) * distance
end
ZO_TOKENIZE_BY_SPACES_PATTERN = "%s*(%S+)"
ZO_TOKENIZE_INTEGERS_PATTERN = "([0-9]+)"
ZO_TOKENIZE_FLOATS_PATTERN = "([0-9]+[.]?[0-9]*)"
-- Split string into tokens via given pattern. Defaults to split by spaces.
function zo_tokenize(sourceString, pattern)
    pattern = pattern or ZO_TOKENIZE_BY_SPACES_PATTERN
    local splitArgs = {}
    for arg in zo_strgmatch(sourceString, pattern) do
        table.insert(splitArgs, arg)
    end
    return splitArgs;
end
do
    -- Converts one or more enum values, of the same enum type, to strings.
    -- Example: local tagNames = { zo_getEnumStrings("SI_HOUSETOURLISTINGTAG", 2, 5, 6, 7, 10) }
    local enumStrings = {}
    function zo_getEnumStrings(siEnumString, ...)
        ZO_ClearNumericallyIndexedTable(enumStrings)
        local numArgs = select("#", ...)
        for argIndex = 1, numArgs do
            local enumValue = select(argIndex, ...)
            enumStrings[argIndex] = GetString(siEnumString, enumValue)
        end
        return unpack(enumStrings)
    end
end
-- Rotate 2D coordinates about the origin by the specified angle.
function ZO_Rotate2D(angle, x, y)
    local cosine = zo_cos(angle)
    local sine = zo_sin(angle)
    return x * cosine - y * sine, y * cosine + x * sine
end
function ZO_ScaleAndRotateTextureCoords(control, angle, originX, originY, scaleX, scaleY)
    -- protect against 1 / 0
    if scaleX == 0 then
        scaleX = 0.0001
    end
    if scaleY == 0 then
        scaleY = 0.0001
    end
    local scaleCoefficientX, scaleCoefficientY = 1 / scaleX, 1 / scaleY
    local topLeftX, topLeftY = ZO_Rotate2D(angle, -0.5 * scaleCoefficientX, -0.5 * scaleCoefficientY)
    local topRightX, topRightY = ZO_Rotate2D(angle,  0.5 * scaleCoefficientX, -0.5 * scaleCoefficientY)
    local bottomLeftX, bottomLeftY = ZO_Rotate2D(angle, -0.5 * scaleCoefficientX,  0.5 * scaleCoefficientY)
    local bottomRightX, bottomRightY = ZO_Rotate2D(angle,  0.5 * scaleCoefficientX,  0.5 * scaleCoefficientY)
    control:SetVertexUV(VERTEX_POINTS_TOPLEFT, originX + topLeftX, originY + topLeftY)
    control:SetVertexUV(VERTEX_POINTS_TOPRIGHT, originX + topRightX, originY + topRightY)
    control:SetVertexUV(VERTEX_POINTS_BOTTOMLEFT, originX + bottomLeftX, originY + bottomLeftY)
    control:SetVertexUV(VERTEX_POINTS_BOTTOMRIGHT, originX + bottomRightX, originY + bottomRightY)
end
-- Rotates the vertex UV coordinates of a texture control to simulate 3D rotation.
-- Returns the normalized x- and y-axis scale pair.
function ZO_RotateTexture3D(textureControl, xRotationRadians, yRotationRadians, zRotationRadians, scaleFactor, normalizedOriginX, normalizedOriginY)
    scaleFactor = scaleFactor or 1
    normalizedOriginX, normalizedOriginY = normalizedOriginX or 0.5, normalizedOriginY or 0.5
    local scaleX, scaleY = zo_cos(xRotationRadians), zo_cos(yRotationRadians)
    local absX, absY = zo_abs(scaleX), zo_abs(scaleY)
    local signX, signY = zo_sign(scaleX), zo_sign(scaleY)
    -- Apply easing to minimize visual distortion when both the x- and y- rotations
    -- converge on right angles concurrently.
    local normalizedScaleX = zo_lerp(0.15, 1, ZO_EaseInOutCubic(absY)) * signY
    local normalizedScaleY = zo_lerp(0.15, 1, ZO_EaseInOutCubic(absX)) * signX
    ZO_ScaleAndRotateTextureCoords(textureControl, zRotationRadians, normalizedOriginX, normalizedOriginY, normalizedScaleX * scaleFactor, normalizedScaleY * scaleFactor)
    return normalizedScaleX, normalizedScaleY
end
-- Returns the normalized camera facing [-1, 1] given a normalized x- and y-axis scale pair.
--[[ Example:
local pitch = zo_rad(0)
local yaw = zo_rad(45)
local roll = zo_rad(60)
local scaleX, scaleY = ZO_RotateTexture3D(myTextureControl, pitch, yaw, roll)
local cameraFacingDirection = ZO_GetNormalizedCameraFacingDirectionFromNormalizedAxisScales(scaleX, scaleY)
ZO_SetTextureLighting(myTextureControl, cameraFacingDirection)
]]
function ZO_GetNormalizedCameraFacingDirectionFromNormalizedAxisScales(normalizedScaleX, normalizedScaleY)
    local normalizedCameraFacing = ZO_EaseInQuadratic(zo_abs(normalizedScaleX) * zo_abs(normalizedScaleY))
    return normalizedCameraFacing
end
-- Applies basic shading to a texture control in proportion to how directly the control is facing the light source.
function ZO_SetTextureLighting(textureControl, normalizedLightSourceFacingDirection, minBrightness, maxBrightness)
    normalizedLightSourceFacingDirection = normalizedLightSourceFacingDirection or textureControl:GetNormalizedCameraFacing()
    minBrightness, maxBrightness = minBrightness or 0.1, maxBrightness or 1
    -- Apply lighting.
    local brightness = zo_lerp(minBrightness, maxBrightness, normalizedLightSourceFacingDirection)
    textureControl:SetTextureSampleProcessingWeight(TEX_SAMPLE_PROCESSING_RGB, brightness)
end
-- Updates the control's texture coordinates to show a single cell of a texture atlas that is composed of uniformly sized cells.
-- Note that cellIndex is 0-based.
function ZO_SetTextureCell(control, numColumns, numRows, cellIndex)
    local cellX = cellIndex % numColumns
    local cellY = zo_floor(cellIndex / numColumns)
    local x1, x2 = cellX / numColumns, (cellX + 1) / numColumns
    local y1, y2 = cellY / numRows, (cellY + 1) / numRows
    control:SetTextureCoords(x1, x2, y1, y2)
end
-- Updates the control's texture coordinates to show a single cell of a texture atlas that is composed of uniformly sized cells,
-- based upon the number of cells, the interval of the animation loop and the number of seconds that have elapsed.
function ZO_SetTextureCellAnimation(control, numColumns, numRows, intervalSeconds, elapsedSeconds)
    local cellInterval = (elapsedSeconds % intervalSeconds) / intervalSeconds
    local cellIndex = zo_floor(numColumns * numRows * cellInterval)
    ZO_SetTextureCell(control, numColumns, numRows, cellIndex)
end
ZO_FlagHelpers = {}
-- Iterator returns each sequential flag in the inclusive range defined by iterationBegin and iterationEnd.
-- For example:
--
-- for bitValue in ZO_FlagHelpers.FlagIterator(1, 4) do
-- d(bitValue)
-- end
--
-- Produces the output:
-- 1
-- 2
-- 4
--
-- The same output is also produced by:
--
-- for bitValue in ZO_FlagHelpers.FlagIterator(4) do
-- d(bitValue)
-- end
function ZO_FlagHelpers.FlagIterator(iterationBeginOrEnd, iterationEnd)
    local iter = iterationBeginOrEnd
    if not iterationEnd then
        -- If iterationEnd is omitted then we can infer that:
        -- iterationBeginOrEnd is the desired ending bit value; and,
        -- iterationBeginOrEnd assumes the implicit value of 1.
        iterationEnd = iterationBeginOrEnd
        iter = 1
    end
    assert(iter > 0)
    assert(iter <= iterationEnd)
    return function()
        if iter <= iterationEnd then
            local ret = iter
            iter = iter * 2 -- BitLShift(iter, 1)
            return ret
        end
    end
end
function ZO_FlagHelpers.MaskHasFlag(mask, flag)
    return BitAnd(mask, flag) == flag
end
function ZO_FlagHelpers.MaskHasAnyFlag(mask, ...)
    for i = 1, select("#", ...) do
        local flag = select(i, ...)
        if BitAnd(mask, flag) == flag then
            return true
        end
    end
    return false
end
function ZO_FlagHelpers.MasksShareAnyFlag(mask1, mask2)
    return BitAnd(mask1, mask2) ~= 0
end
-- Iterator returns each flag set in the specified mask.
-- For example:
--
-- local mask = 11 -- 1011 in binary
-- for flag in ZO_FlagHelpers.MaskHasFlagsIterator(mask) do
-- d(flag)
-- end
--
-- Produces the output:
-- 1
-- 2
-- 8
function ZO_FlagHelpers.MaskHasFlagsIterator(mask)
    local iter = 1
    return function()
        while iter <= mask do
            local currentFlag = iter
            iter = iter * 2 -- BitLShift(iter, 1)
            if BitAnd(mask, currentFlag) == currentFlag then
                return currentFlag
            end
        end
        return nil
    end
end
function ZO_FlagHelpers.ClearMaskFlag(mask, flag)
    local flagInverse = BitNot(flag, ZO_INTEGER_53_MAX_BITS)
    return BitAnd(mask, flagInverse)
end
function ZO_FlagHelpers.ClearMaskFlags(mask, ...)
    local flags = {...}
    local flagsToClear = 0
    for _, flag in ipairs(flags) do
        flagsToClear = BitOr(flagsToClear, flag)
    end
    return ZO_FlagHelpers.ClearMaskFlag(mask, flagsToClear)
end
function ZO_FlagHelpers.SetMaskFlag(mask, flag)
    return BitOr(mask, flag)
end
function ZO_FlagHelpers.SetMaskFlags(mask, ...)
    local flags = {...}
    for _, flag in ipairs(flags) do
        mask = BitOr(mask, flag)
    end
    return mask
end
-- Returns nil if no flags have changed; otherwise,
-- Returns a table whose keys and values are the flags that
-- have changed and their new corresponding Boolean values.
function ZO_FlagHelpers.CompareMaskFlags(flagsBefore, flagsAfter)
    if flagsBefore == flagsAfter then
        -- No flags have changed.
        return
    end
    local changedFlags = nil
    -- Higher mask value of either the before or after mask.
    local maxFlagMask = zo_max(flagsBefore, flagsAfter)
    -- Begin with first bit mask.
    local currentFlagMask = 1
    while currentFlagMask <= maxFlagMask do
        -- The new ("after") flag bit value.
        local flagAfter = BitAnd(flagsAfter, currentFlagMask)
        -- Has this flag bit value changed?
        if flagAfter ~= BitAnd(flagsBefore, currentFlagMask) then
            if not changedFlags then
                -- Deferred table allocation for performance.
                changedFlags = {}
            end
            -- Key: Flag mask (such as 1 or 4 or 64, etc.)
            -- Value: Flag bit value (true or false)
            changedFlags[currentFlagMask] = flagAfter ~= 0
        end
        -- Left shift mask to next highest bit.
        currentFlagMask = currentFlagMask * 2
    end
    return changedFlags
end
-- Returns an iterator for which the keys are the names of the functions in
-- the callstack ordered from the top to the bottom of the callstack.
    local stackTrace = debug.traceback()
    return zo_strgmatch(stackTrace, "in function '(%S*)'")
end
-- Returns a numerically indexed table containing the names of the functions
-- in the callstack ordered from the top to the bottom of the callstack.
-- Specify an optional 'numTopmostFunctionsToExclude' to exclude one or more
-- function names starting from the top of the callstack (default is 0).
function ZO_GetCallstackFunctionNames(numTopmostFunctionsToExclude)
    local minFunctionIndex = (numTopmostFunctionsToExclude or 0) + 1
    local functionNames = {}
    local functionIndex = 0
    for functionName in ZO_GetCallstackFunctionNamesIterator() do
        if functionName ~= "ZO_GetCallstackFunctionNames" and functionName ~= "ZO_GetCallstackFunctionNamesIterator" then
            functionIndex = functionIndex + 1
            if functionIndex >= minFunctionIndex then
                table.insert(functionNames, functionName)
            end
        end
    end
    return functionNames
end
-- Returns the name of the function at the specified index in the callstack.
-- Note that index 1 is the name of the caller function, index 2 is the name
-- of the function that called the caller function, and so on.
function ZO_GetCallstackFunctionName(callstackIndex)
    -- Skip this function and ZO_GetCallstackFunctionNamesIterator.
    local numFunctionsToSkip = callstackIndex + 1
    for functionName in ZO_GetCallstackFunctionNamesIterator() do
        if numFunctionsToSkip > 0 then
            numFunctionsToSkip = numFunctionsToSkip - 1
        else
            return functionName
        end
    end
end
-- Returns the name of the current function that is executing.
    -- Skip this function.
    return ZO_GetCallstackFunctionName(1)
end
-- Returns the name of the function that called the current function that is executing.
    -- Skip this function and the caller function.
    return ZO_GetCallstackFunctionName(2)
end
    return function(...) receiverFunction(object, ...) end
end
    return function(_, ...) receiverFunction(object, ...) end
end
-- Returns a reference to the "owner" object instance associated
-- with the specified control if such an owner exists.
    local owner = control.owner or control.object or nil
    if not owner and control:GetType() ~= CT_TOPLEVELCONTROL then
        local topLevelControl = control:GetOwningWindow()
        owner = topLevelControl.owner or topLevelControl.object or nil
    end
    return owner
end