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//>>built
define("dojox/charting/scaler/common", ["dojo/_base/lang"], function(lang){
var eq = function(/*Number*/ a, /*Number*/ b){
// summary: compare two FP numbers for equality
return Math.abs(a - b) <= 1e-6 * (Math.abs(a) + Math.abs(b)); // Boolean
};
var common = lang.getObject("dojox.charting.scaler.common", true);
var testedModules = {};
return lang.mixin(common, {
doIfLoaded: function(moduleName, ifloaded, ifnotloaded){
if(testedModules[moduleName] == undefined){
try{
testedModules[moduleName] = require(moduleName);
}catch(e){
testedModules[moduleName] = null;
}
}
if(testedModules[moduleName]){
return ifloaded(testedModules[moduleName]);
}else{
return ifnotloaded();
}
},
findString: function(/*String*/ val, /*Array*/ text){
val = val.toLowerCase();
for(var i = 0; i < text.length; ++i){
if(val == text[i]){ return true; }
}
return false;
},
getNumericLabel: function(/*Number*/ number, /*Number*/ precision, /*Object*/ kwArgs){
var def = "";
common.doIfLoaded("dojo/number", function(numberLib){
def = (kwArgs.fixed ? numberLib.format(number, {places : precision < 0 ? -precision : 0}) :
numberLib.format(number)) || "";
}, function(){
def = kwArgs.fixed ? number.toFixed(precision < 0 ? -precision : 0) : number.toString();
});
if(kwArgs.labelFunc){
var r = kwArgs.labelFunc(def, number, precision);
if(r){ return r; }
// else fall through to the regular labels search
}
if(kwArgs.labels){
// classic binary search
var l = kwArgs.labels, lo = 0, hi = l.length;
while(lo < hi){
var mid = Math.floor((lo + hi) / 2), val = l[mid].value;
if(val < number){
lo = mid + 1;
}else{
hi = mid;
}
}
// lets take into account FP errors
if(lo < l.length && eq(l[lo].value, number)){
return l[lo].text;
}
--lo;
if(lo >= 0 && lo < l.length && eq(l[lo].value, number)){
return l[lo].text;
}
lo += 2;
if(lo < l.length && eq(l[lo].value, number)){
return l[lo].text;
}
// otherwise we will produce a number
}
return def;
}
});
});
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