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88e95c46 DV |
1 | /** |
2 | * @license | |
3 | * Copyright 2011 Dan Vanderkam (danvdk@gmail.com) | |
4 | * MIT-licensed (http://opensource.org/licenses/MIT) | |
5 | */ | |
dedb4f5f | 6 | |
004b5c90 DV |
7 | /** |
8 | * @fileoverview This file contains utility functions used by dygraphs. These | |
9 | * are typically static (i.e. not related to any particular dygraph). Examples | |
10 | * include date/time formatting functions, basic algorithms (e.g. binary | |
11 | * search) and generic DOM-manipulation functions. | |
12 | */ | |
dedb4f5f DV |
13 | |
14 | Dygraph.LOG_SCALE = 10; | |
15 | Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE); | |
16 | ||
17 | /** @private */ | |
18 | Dygraph.log10 = function(x) { | |
19 | return Math.log(x) / Dygraph.LN_TEN; | |
20 | } | |
21 | ||
22 | // Various logging levels. | |
23 | Dygraph.DEBUG = 1; | |
24 | Dygraph.INFO = 2; | |
25 | Dygraph.WARNING = 3; | |
26 | Dygraph.ERROR = 3; | |
27 | ||
28 | // TODO(danvk): any way I can get the line numbers to be this.warn call? | |
29 | /** | |
30 | * @private | |
31 | * Log an error on the JS console at the given severity. | |
32 | * @param { Integer } severity One of Dygraph.{DEBUG,INFO,WARNING,ERROR} | |
33 | * @param { String } The message to log. | |
34 | */ | |
35 | Dygraph.log = function(severity, message) { | |
36 | if (typeof(console) != 'undefined') { | |
37 | switch (severity) { | |
38 | case Dygraph.DEBUG: | |
39 | console.debug('dygraphs: ' + message); | |
40 | break; | |
41 | case Dygraph.INFO: | |
42 | console.info('dygraphs: ' + message); | |
43 | break; | |
44 | case Dygraph.WARNING: | |
45 | console.warn('dygraphs: ' + message); | |
46 | break; | |
47 | case Dygraph.ERROR: | |
48 | console.error('dygraphs: ' + message); | |
49 | break; | |
50 | } | |
51 | } | |
52 | }; | |
53 | ||
54 | /** @private */ | |
55 | Dygraph.info = function(message) { | |
56 | Dygraph.log(Dygraph.INFO, message); | |
57 | }; | |
58 | /** @private */ | |
59 | Dygraph.prototype.info = Dygraph.info; | |
60 | ||
61 | /** @private */ | |
62 | Dygraph.warn = function(message) { | |
63 | Dygraph.log(Dygraph.WARNING, message); | |
64 | }; | |
65 | /** @private */ | |
66 | Dygraph.prototype.warn = Dygraph.warn; | |
67 | ||
68 | /** @private */ | |
69 | Dygraph.error = function(message) { | |
70 | Dygraph.log(Dygraph.ERROR, message); | |
71 | }; | |
72 | /** @private */ | |
73 | Dygraph.prototype.error = Dygraph.error; | |
74 | ||
75 | /** | |
76 | * @private | |
77 | * Return the 2d context for a dygraph canvas. | |
78 | * | |
79 | * This method is only exposed for the sake of replacing the function in | |
80 | * automated tests, e.g. | |
81 | * | |
82 | * var oldFunc = Dygraph.getContext(); | |
83 | * Dygraph.getContext = function(canvas) { | |
84 | * var realContext = oldFunc(canvas); | |
85 | * return new Proxy(realContext); | |
86 | * }; | |
87 | */ | |
88 | Dygraph.getContext = function(canvas) { | |
89 | return canvas.getContext("2d"); | |
90 | }; | |
91 | ||
92 | /** | |
93 | * @private | |
94 | * Add an event handler. This smooths a difference between IE and the rest of | |
95 | * the world. | |
96 | * @param { DOM element } el The element to add the event to. | |
97 | * @param { String } evt The name of the event, e.g. 'click' or 'mousemove'. | |
98 | * @param { Function } fn The function to call on the event. The function takes | |
99 | * one parameter: the event object. | |
100 | */ | |
101 | Dygraph.addEvent = function(el, evt, fn) { | |
102 | var normed_fn = function(e) { | |
103 | if (!e) var e = window.event; | |
104 | fn(e); | |
105 | }; | |
106 | if (window.addEventListener) { // Mozilla, Netscape, Firefox | |
107 | el.addEventListener(evt, normed_fn, false); | |
108 | } else { // IE | |
109 | el.attachEvent('on' + evt, normed_fn); | |
110 | } | |
111 | }; | |
112 | ||
113 | /** | |
114 | * @private | |
115 | * Cancels further processing of an event. This is useful to prevent default | |
116 | * browser actions, e.g. highlighting text on a double-click. | |
117 | * Based on the article at | |
118 | * http://www.switchonthecode.com/tutorials/javascript-tutorial-the-scroll-wheel | |
119 | * @param { Event } e The event whose normal behavior should be canceled. | |
120 | */ | |
121 | Dygraph.cancelEvent = function(e) { | |
122 | e = e ? e : window.event; | |
123 | if (e.stopPropagation) { | |
124 | e.stopPropagation(); | |
125 | } | |
126 | if (e.preventDefault) { | |
127 | e.preventDefault(); | |
128 | } | |
129 | e.cancelBubble = true; | |
130 | e.cancel = true; | |
131 | e.returnValue = false; | |
132 | return false; | |
133 | }; | |
134 | ||
135 | /** | |
136 | * Convert hsv values to an rgb(r,g,b) string. Taken from MochiKit.Color. This | |
137 | * is used to generate default series colors which are evenly spaced on the | |
138 | * color wheel. | |
139 | * @param { Number } hue Range is 0.0-1.0. | |
140 | * @param { Number } saturation Range is 0.0-1.0. | |
141 | * @param { Number } value Range is 0.0-1.0. | |
142 | * @return { String } "rgb(r,g,b)" where r, g and b range from 0-255. | |
143 | * @private | |
144 | */ | |
145 | Dygraph.hsvToRGB = function (hue, saturation, value) { | |
146 | var red; | |
147 | var green; | |
148 | var blue; | |
149 | if (saturation === 0) { | |
150 | red = value; | |
151 | green = value; | |
152 | blue = value; | |
153 | } else { | |
154 | var i = Math.floor(hue * 6); | |
155 | var f = (hue * 6) - i; | |
156 | var p = value * (1 - saturation); | |
157 | var q = value * (1 - (saturation * f)); | |
158 | var t = value * (1 - (saturation * (1 - f))); | |
159 | switch (i) { | |
160 | case 1: red = q; green = value; blue = p; break; | |
161 | case 2: red = p; green = value; blue = t; break; | |
162 | case 3: red = p; green = q; blue = value; break; | |
163 | case 4: red = t; green = p; blue = value; break; | |
164 | case 5: red = value; green = p; blue = q; break; | |
165 | case 6: // fall through | |
166 | case 0: red = value; green = t; blue = p; break; | |
167 | } | |
168 | } | |
169 | red = Math.floor(255 * red + 0.5); | |
170 | green = Math.floor(255 * green + 0.5); | |
171 | blue = Math.floor(255 * blue + 0.5); | |
172 | return 'rgb(' + red + ',' + green + ',' + blue + ')'; | |
173 | }; | |
174 | ||
175 | // The following functions are from quirksmode.org with a modification for Safari from | |
176 | // http://blog.firetree.net/2005/07/04/javascript-find-position/ | |
177 | // http://www.quirksmode.org/js/findpos.html | |
1bc38cbc | 178 | // ... and modifications to support scrolling divs. |
dedb4f5f | 179 | |
8442269f RK |
180 | /** |
181 | * Find the x-coordinate of the supplied object relative to the left side | |
182 | * of the page. | |
183 | * @private | |
184 | */ | |
dedb4f5f DV |
185 | Dygraph.findPosX = function(obj) { |
186 | var curleft = 0; | |
8442269f RK |
187 | if(obj.offsetParent) { |
188 | var copyObj = obj; | |
189 | while(1) { | |
190 | curleft += copyObj.offsetLeft; | |
191 | if(!copyObj.offsetParent) { | |
dedb4f5f | 192 | break; |
8442269f RK |
193 | } |
194 | copyObj = copyObj.offsetParent; | |
dedb4f5f | 195 | } |
8442269f | 196 | } else if(obj.x) { |
dedb4f5f | 197 | curleft += obj.x; |
8442269f RK |
198 | } |
199 | // This handles the case where the object is inside a scrolled div. | |
200 | while(obj && obj != document.body) { | |
201 | curleft -= obj.scrollLeft; | |
202 | obj = obj.parentNode; | |
203 | } | |
dedb4f5f DV |
204 | return curleft; |
205 | }; | |
206 | ||
8442269f RK |
207 | /** |
208 | * Find the y-coordinate of the supplied object relative to the top of the | |
209 | * page. | |
210 | * @private | |
211 | */ | |
dedb4f5f DV |
212 | Dygraph.findPosY = function(obj) { |
213 | var curtop = 0; | |
8442269f RK |
214 | if(obj.offsetParent) { |
215 | var copyObj = obj; | |
216 | while(1) { | |
217 | curtop += copyObj.offsetTop; | |
218 | if(!copyObj.offsetParent) { | |
dedb4f5f | 219 | break; |
8442269f RK |
220 | } |
221 | copyObj = copyObj.offsetParent; | |
dedb4f5f | 222 | } |
8442269f | 223 | } else if(obj.y) { |
dedb4f5f | 224 | curtop += obj.y; |
8442269f RK |
225 | } |
226 | // This handles the case where the object is inside a scrolled div. | |
227 | while(obj && obj != document.body) { | |
228 | curtop -= obj.scrollTop; | |
229 | obj = obj.parentNode; | |
230 | } | |
dedb4f5f DV |
231 | return curtop; |
232 | }; | |
233 | ||
234 | /** | |
235 | * @private | |
236 | * Returns the x-coordinate of the event in a coordinate system where the | |
237 | * top-left corner of the page (not the window) is (0,0). | |
238 | * Taken from MochiKit.Signal | |
239 | */ | |
240 | Dygraph.pageX = function(e) { | |
241 | if (e.pageX) { | |
242 | return (!e.pageX || e.pageX < 0) ? 0 : e.pageX; | |
243 | } else { | |
244 | var de = document; | |
245 | var b = document.body; | |
246 | return e.clientX + | |
247 | (de.scrollLeft || b.scrollLeft) - | |
248 | (de.clientLeft || 0); | |
249 | } | |
250 | }; | |
251 | ||
252 | /** | |
253 | * @private | |
254 | * Returns the y-coordinate of the event in a coordinate system where the | |
255 | * top-left corner of the page (not the window) is (0,0). | |
256 | * Taken from MochiKit.Signal | |
257 | */ | |
258 | Dygraph.pageY = function(e) { | |
259 | if (e.pageY) { | |
260 | return (!e.pageY || e.pageY < 0) ? 0 : e.pageY; | |
261 | } else { | |
262 | var de = document; | |
263 | var b = document.body; | |
264 | return e.clientY + | |
265 | (de.scrollTop || b.scrollTop) - | |
266 | (de.clientTop || 0); | |
267 | } | |
268 | }; | |
269 | ||
270 | /** | |
271 | * @private | |
272 | * @param { Number } x The number to consider. | |
273 | * @return { Boolean } Whether the number is zero or NaN. | |
274 | */ | |
275 | // TODO(danvk): rename this function to something like 'isNonZeroNan'. | |
276 | Dygraph.isOK = function(x) { | |
277 | return x && !isNaN(x); | |
278 | }; | |
279 | ||
280 | /** | |
281 | * Number formatting function which mimicks the behavior of %g in printf, i.e. | |
282 | * either exponential or fixed format (without trailing 0s) is used depending on | |
283 | * the length of the generated string. The advantage of this format is that | |
284 | * there is a predictable upper bound on the resulting string length, | |
285 | * significant figures are not dropped, and normal numbers are not displayed in | |
286 | * exponential notation. | |
287 | * | |
288 | * NOTE: JavaScript's native toPrecision() is NOT a drop-in replacement for %g. | |
289 | * It creates strings which are too long for absolute values between 10^-4 and | |
290 | * 10^-6, e.g. '0.00001' instead of '1e-5'. See tests/number-format.html for | |
291 | * output examples. | |
292 | * | |
293 | * @param {Number} x The number to format | |
294 | * @param {Number} opt_precision The precision to use, default 2. | |
295 | * @return {String} A string formatted like %g in printf. The max generated | |
296 | * string length should be precision + 6 (e.g 1.123e+300). | |
297 | */ | |
298 | Dygraph.floatFormat = function(x, opt_precision) { | |
299 | // Avoid invalid precision values; [1, 21] is the valid range. | |
300 | var p = Math.min(Math.max(1, opt_precision || 2), 21); | |
301 | ||
302 | // This is deceptively simple. The actual algorithm comes from: | |
303 | // | |
304 | // Max allowed length = p + 4 | |
305 | // where 4 comes from 'e+n' and '.'. | |
306 | // | |
307 | // Length of fixed format = 2 + y + p | |
308 | // where 2 comes from '0.' and y = # of leading zeroes. | |
309 | // | |
310 | // Equating the two and solving for y yields y = 2, or 0.00xxxx which is | |
311 | // 1.0e-3. | |
312 | // | |
313 | // Since the behavior of toPrecision() is identical for larger numbers, we | |
314 | // don't have to worry about the other bound. | |
315 | // | |
316 | // Finally, the argument for toExponential() is the number of trailing digits, | |
317 | // so we take off 1 for the value before the '.'. | |
318 | return (Math.abs(x) < 1.0e-3 && x != 0.0) ? | |
319 | x.toExponential(p - 1) : x.toPrecision(p); | |
320 | }; | |
321 | ||
322 | /** | |
323 | * @private | |
324 | * Converts '9' to '09' (useful for dates) | |
325 | */ | |
326 | Dygraph.zeropad = function(x) { | |
327 | if (x < 10) return "0" + x; else return "" + x; | |
328 | }; | |
329 | ||
330 | /** | |
331 | * Return a string version of the hours, minutes and seconds portion of a date. | |
332 | * @param {Number} date The JavaScript date (ms since epoch) | |
333 | * @return {String} A time of the form "HH:MM:SS" | |
334 | * @private | |
335 | */ | |
336 | Dygraph.hmsString_ = function(date) { | |
337 | var zeropad = Dygraph.zeropad; | |
338 | var d = new Date(date); | |
339 | if (d.getSeconds()) { | |
340 | return zeropad(d.getHours()) + ":" + | |
341 | zeropad(d.getMinutes()) + ":" + | |
342 | zeropad(d.getSeconds()); | |
343 | } else { | |
344 | return zeropad(d.getHours()) + ":" + zeropad(d.getMinutes()); | |
345 | } | |
346 | }; | |
347 | ||
348 | /** | |
dedb4f5f DV |
349 | * Round a number to the specified number of digits past the decimal point. |
350 | * @param {Number} num The number to round | |
351 | * @param {Number} places The number of decimals to which to round | |
352 | * @return {Number} The rounded number | |
353 | * @private | |
354 | */ | |
355 | Dygraph.round_ = function(num, places) { | |
356 | var shift = Math.pow(10, places); | |
357 | return Math.round(num * shift)/shift; | |
358 | }; | |
359 | ||
360 | /** | |
361 | * @private | |
362 | * Implementation of binary search over an array. | |
363 | * Currently does not work when val is outside the range of arry's values. | |
364 | * @param { Integer } val the value to search for | |
365 | * @param { Integer[] } arry is the value over which to search | |
366 | * @param { Integer } abs If abs > 0, find the lowest entry greater than val | |
367 | * If abs < 0, find the highest entry less than val. | |
368 | * if abs == 0, find the entry that equals val. | |
369 | * @param { Integer } [low] The first index in arry to consider (optional) | |
370 | * @param { Integer } [high] The last index in arry to consider (optional) | |
371 | */ | |
372 | Dygraph.binarySearch = function(val, arry, abs, low, high) { | |
373 | if (low == null || high == null) { | |
374 | low = 0; | |
375 | high = arry.length - 1; | |
376 | } | |
377 | if (low > high) { | |
378 | return -1; | |
379 | } | |
380 | if (abs == null) { | |
381 | abs = 0; | |
382 | } | |
383 | var validIndex = function(idx) { | |
384 | return idx >= 0 && idx < arry.length; | |
385 | } | |
386 | var mid = parseInt((low + high) / 2); | |
387 | var element = arry[mid]; | |
388 | if (element == val) { | |
389 | return mid; | |
390 | } | |
391 | if (element > val) { | |
392 | if (abs > 0) { | |
393 | // Accept if element > val, but also if prior element < val. | |
394 | var idx = mid - 1; | |
395 | if (validIndex(idx) && arry[idx] < val) { | |
396 | return mid; | |
397 | } | |
398 | } | |
399 | return Dygraph.binarySearch(val, arry, abs, low, mid - 1); | |
400 | } | |
401 | if (element < val) { | |
402 | if (abs < 0) { | |
403 | // Accept if element < val, but also if prior element > val. | |
404 | var idx = mid + 1; | |
405 | if (validIndex(idx) && arry[idx] > val) { | |
406 | return mid; | |
407 | } | |
408 | } | |
409 | return Dygraph.binarySearch(val, arry, abs, mid + 1, high); | |
410 | } | |
411 | }; | |
412 | ||
413 | /** | |
414 | * @private | |
415 | * Parses a date, returning the number of milliseconds since epoch. This can be | |
416 | * passed in as an xValueParser in the Dygraph constructor. | |
417 | * TODO(danvk): enumerate formats that this understands. | |
418 | * @param {String} A date in YYYYMMDD format. | |
419 | * @return {Number} Milliseconds since epoch. | |
420 | */ | |
421 | Dygraph.dateParser = function(dateStr) { | |
422 | var dateStrSlashed; | |
423 | var d; | |
424 | if (dateStr.search("-") != -1) { // e.g. '2009-7-12' or '2009-07-12' | |
425 | dateStrSlashed = dateStr.replace("-", "/", "g"); | |
426 | while (dateStrSlashed.search("-") != -1) { | |
427 | dateStrSlashed = dateStrSlashed.replace("-", "/"); | |
428 | } | |
429 | d = Dygraph.dateStrToMillis(dateStrSlashed); | |
430 | } else if (dateStr.length == 8) { // e.g. '20090712' | |
431 | // TODO(danvk): remove support for this format. It's confusing. | |
432 | dateStrSlashed = dateStr.substr(0,4) + "/" + dateStr.substr(4,2) | |
433 | + "/" + dateStr.substr(6,2); | |
434 | d = Dygraph.dateStrToMillis(dateStrSlashed); | |
435 | } else { | |
436 | // Any format that Date.parse will accept, e.g. "2009/07/12" or | |
437 | // "2009/07/12 12:34:56" | |
438 | d = Dygraph.dateStrToMillis(dateStr); | |
439 | } | |
440 | ||
441 | if (!d || isNaN(d)) { | |
442 | Dygraph.error("Couldn't parse " + dateStr + " as a date"); | |
443 | } | |
444 | return d; | |
445 | }; | |
446 | ||
447 | /** | |
448 | * @private | |
449 | * This is identical to JavaScript's built-in Date.parse() method, except that | |
450 | * it doesn't get replaced with an incompatible method by aggressive JS | |
451 | * libraries like MooTools or Joomla. | |
452 | * @param { String } str The date string, e.g. "2011/05/06" | |
453 | * @return { Integer } millis since epoch | |
454 | */ | |
455 | Dygraph.dateStrToMillis = function(str) { | |
456 | return new Date(str).getTime(); | |
457 | }; | |
458 | ||
459 | // These functions are all based on MochiKit. | |
460 | /** | |
461 | * Copies all the properties from o to self. | |
462 | * | |
463 | * @private | |
464 | */ | |
465 | Dygraph.update = function (self, o) { | |
466 | if (typeof(o) != 'undefined' && o !== null) { | |
467 | for (var k in o) { | |
468 | if (o.hasOwnProperty(k)) { | |
469 | self[k] = o[k]; | |
470 | } | |
471 | } | |
472 | } | |
473 | return self; | |
474 | }; | |
475 | ||
476 | /** | |
48e614ac DV |
477 | * Copies all the properties from o to self. |
478 | * | |
479 | * @private | |
480 | */ | |
481 | Dygraph.updateDeep = function (self, o) { | |
482 | if (typeof(o) != 'undefined' && o !== null) { | |
483 | for (var k in o) { | |
484 | if (o.hasOwnProperty(k)) { | |
485 | if (o[k] == null) { | |
486 | self[k] = null; | |
487 | } else if (Dygraph.isArrayLike(o[k])) { | |
488 | self[k] = o[k].slice(); | |
489 | } else if (typeof(o[k]) == 'object') { | |
490 | if (typeof(self[k]) != 'object') { | |
491 | self[k] = {}; | |
492 | } | |
493 | Dygraph.updateDeep(self[k], o[k]); | |
494 | } else { | |
495 | self[k] = o[k]; | |
496 | } | |
497 | } | |
498 | } | |
499 | } | |
500 | return self; | |
501 | }; | |
502 | ||
503 | /** | |
dedb4f5f DV |
504 | * @private |
505 | */ | |
506 | Dygraph.isArrayLike = function (o) { | |
507 | var typ = typeof(o); | |
508 | if ( | |
509 | (typ != 'object' && !(typ == 'function' && | |
510 | typeof(o.item) == 'function')) || | |
511 | o === null || | |
512 | typeof(o.length) != 'number' || | |
513 | o.nodeType === 3 | |
514 | ) { | |
515 | return false; | |
516 | } | |
517 | return true; | |
518 | }; | |
519 | ||
520 | /** | |
521 | * @private | |
522 | */ | |
523 | Dygraph.isDateLike = function (o) { | |
524 | if (typeof(o) != "object" || o === null || | |
525 | typeof(o.getTime) != 'function') { | |
526 | return false; | |
527 | } | |
528 | return true; | |
529 | }; | |
530 | ||
531 | /** | |
48e614ac | 532 | * Note: this only seems to work for arrays. |
dedb4f5f DV |
533 | * @private |
534 | */ | |
535 | Dygraph.clone = function(o) { | |
536 | // TODO(danvk): figure out how MochiKit's version works | |
537 | var r = []; | |
538 | for (var i = 0; i < o.length; i++) { | |
539 | if (Dygraph.isArrayLike(o[i])) { | |
540 | r.push(Dygraph.clone(o[i])); | |
541 | } else { | |
542 | r.push(o[i]); | |
543 | } | |
544 | } | |
545 | return r; | |
546 | }; | |
547 | ||
548 | /** | |
549 | * @private | |
550 | * Create a new canvas element. This is more complex than a simple | |
551 | * document.createElement("canvas") because of IE and excanvas. | |
552 | */ | |
553 | Dygraph.createCanvas = function() { | |
554 | var canvas = document.createElement("canvas"); | |
555 | ||
556 | isIE = (/MSIE/.test(navigator.userAgent) && !window.opera); | |
557 | if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) { | |
558 | canvas = G_vmlCanvasManager.initElement(canvas); | |
559 | } | |
560 | ||
561 | return canvas; | |
562 | }; | |
9ca829f2 DV |
563 | |
564 | /** | |
565 | * @private | |
566 | * This function will scan the option list and determine if they | |
567 | * require us to recalculate the pixel positions of each point. | |
568 | * @param { List } a list of options to check. | |
569 | * @return { Boolean } true if the graph needs new points else false. | |
570 | */ | |
571 | Dygraph.isPixelChangingOptionList = function(labels, attrs) { | |
572 | // A whitelist of options that do not change pixel positions. | |
573 | var pixelSafeOptions = { | |
574 | 'annotationClickHandler': true, | |
575 | 'annotationDblClickHandler': true, | |
576 | 'annotationMouseOutHandler': true, | |
577 | 'annotationMouseOverHandler': true, | |
578 | 'axisLabelColor': true, | |
579 | 'axisLineColor': true, | |
580 | 'axisLineWidth': true, | |
581 | 'clickCallback': true, | |
582 | 'colorSaturation': true, | |
583 | 'colorValue': true, | |
584 | 'colors': true, | |
585 | 'connectSeparatedPoints': true, | |
586 | 'digitsAfterDecimal': true, | |
587 | 'drawCallback': true, | |
588 | 'drawPoints': true, | |
589 | 'drawXGrid': true, | |
590 | 'drawYGrid': true, | |
591 | 'fillAlpha': true, | |
592 | 'gridLineColor': true, | |
593 | 'gridLineWidth': true, | |
594 | 'hideOverlayOnMouseOut': true, | |
595 | 'highlightCallback': true, | |
596 | 'highlightCircleSize': true, | |
597 | 'interactionModel': true, | |
598 | 'isZoomedIgnoreProgrammaticZoom': true, | |
599 | 'labelsDiv': true, | |
600 | 'labelsDivStyles': true, | |
601 | 'labelsDivWidth': true, | |
602 | 'labelsKMB': true, | |
603 | 'labelsKMG2': true, | |
604 | 'labelsSeparateLines': true, | |
605 | 'labelsShowZeroValues': true, | |
606 | 'legend': true, | |
607 | 'maxNumberWidth': true, | |
608 | 'panEdgeFraction': true, | |
609 | 'pixelsPerYLabel': true, | |
610 | 'pointClickCallback': true, | |
611 | 'pointSize': true, | |
612 | 'showLabelsOnHighlight': true, | |
613 | 'showRoller': true, | |
614 | 'sigFigs': true, | |
615 | 'strokeWidth': true, | |
616 | 'underlayCallback': true, | |
617 | 'unhighlightCallback': true, | |
618 | 'xAxisLabelFormatter': true, | |
619 | 'xTicker': true, | |
620 | 'xValueFormatter': true, | |
621 | 'yAxisLabelFormatter': true, | |
622 | 'yValueFormatter': true, | |
623 | 'zoomCallback': true | |
624 | }; | |
625 | ||
626 | // Assume that we do not require new points. | |
627 | // This will change to true if we actually do need new points. | |
628 | var requiresNewPoints = false; | |
629 | ||
630 | // Create a dictionary of series names for faster lookup. | |
631 | // If there are no labels, then the dictionary stays empty. | |
632 | var seriesNamesDictionary = { }; | |
633 | if (labels) { | |
634 | for (var i = 1; i < labels.length; i++) { | |
635 | seriesNamesDictionary[labels[i]] = true; | |
636 | } | |
637 | } | |
638 | ||
639 | // Iterate through the list of updated options. | |
640 | for (property in attrs) { | |
641 | // Break early if we already know we need new points from a previous option. | |
642 | if (requiresNewPoints) { | |
643 | break; | |
644 | } | |
645 | if (attrs.hasOwnProperty(property)) { | |
646 | // Find out of this field is actually a series specific options list. | |
647 | if (seriesNamesDictionary[property]) { | |
648 | // This property value is a list of options for this series. | |
649 | // If any of these sub properties are not pixel safe, set the flag. | |
650 | for (subProperty in attrs[property]) { | |
651 | // Break early if we already know we need new points from a previous option. | |
652 | if (requiresNewPoints) { | |
653 | break; | |
654 | } | |
655 | if (attrs[property].hasOwnProperty(subProperty) && !pixelSafeOptions[subProperty]) { | |
656 | requiresNewPoints = true; | |
657 | } | |
658 | } | |
659 | // If this was not a series specific option list, check if its a pixel changing property. | |
660 | } else if (!pixelSafeOptions[property]) { | |
661 | requiresNewPoints = true; | |
662 | } | |
663 | } | |
664 | } | |
665 | ||
666 | return requiresNewPoints; | |
667 | }; |