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import { IBaseBrushable } from '../core/brusher/IBaseBrushable';
import { IBaseFilterConsumer } from '../core/filter/IBaseFilterConsumer';
import { IBaseFilterProvider } from '../core/filter/IBaseFilterProvider';
import { AggregateFunction } from '../model/idea/idea';
export class Utils {
public static EqualityHelper(a: Object, b: Object): boolean {
if (a === b) return true;
if (a === undefined && b !== undefined) return false;
if (a === null && b !== null) return false;
if (b === undefined && a !== undefined) return false;
if (b === null && a !== null) return false;
if ((<any>a).constructor.name !== (<any>b).constructor.name) return false;
return true;
}
public static LowercaseFirstLetter(str: string) {
return str.charAt(0).toUpperCase() + str.slice(1);
}
//
// this Type Guard tests if dropTarget is an IDropTarget. If it is, it coerces the compiler
// to treat the dropTarget parameter as an IDropTarget *ouside* this function scope (ie, in
// the scope of where this function is called from).
//
public static isBaseBrushable<T>(obj: Object): obj is IBaseBrushable<T> {
let typed = <IBaseBrushable<T>>obj;
return typed !== null && typed.BrusherModels !== undefined;
}
public static isBaseFilterProvider(obj: Object): obj is IBaseFilterProvider {
let typed = <IBaseFilterProvider>obj;
return typed !== null && typed.FilterModels !== undefined;
}
public static isBaseFilterConsumer(obj: Object): obj is IBaseFilterConsumer {
let typed = <IBaseFilterConsumer>obj;
return typed !== null && typed.FilterOperand !== undefined;
}
public static EncodeQueryData(data: any): string {
const ret = [];
for (let d in data) {
ret.push(encodeURIComponent(d) + "=" + encodeURIComponent(data[d]));
}
return ret.join("&");
}
public static ToVegaAggregationString(agg: AggregateFunction): string {
if (agg === AggregateFunction.Avg) {
return "average";
}
else if (agg === AggregateFunction.Count) {
return "count";
}
else {
return "";
}
}
public static GetQueryVariable(variable: string) {
let query = window.location.search.substring(1);
let vars = query.split("&");
for (const variable of vars) {
let pair = variable.split("=");
if (decodeURIComponent(pair[0]) === variable) {
return decodeURIComponent(pair[1]);
}
}
return undefined;
}
}
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