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import {BaseTitle, SignalRef, Text, TextEncodeEntry, TitleAnchor} from 'vega';import {isArray, isString} from 'vega-util';import {ExprRef} from './expr';import {MarkConfig} from './mark';import {pick} from './util';import {MapExcludeValueRefAndReplaceSignalWith, MappedExcludeValueRef} from './vega.schema';
export type BaseTitleNoValueRefs<ES extends ExprRef | SignalRef> = MapExcludeValueRefAndReplaceSignalWith<  Omit<BaseTitle, 'align' | 'baseline'>,  ES> &  // Since some logic depends on align/baseline, Vega-Lite does NOT allow signal for them.  MappedExcludeValueRef<Pick<BaseTitle, 'align' | 'baseline'>>;
export type TitleConfig<ES extends ExprRef | SignalRef> = BaseTitleNoValueRefs<ES>;
export interface TitleBase<ES extends ExprRef | SignalRef> extends BaseTitleNoValueRefs<ES> {  /**   * The anchor position for placing the title. One of `"start"`, `"middle"`, or `"end"`. For example, with an orientation of top these anchor positions map to a left-, center-, or right-aligned title.   *   * __Default value:__ `"middle"` for [single](https://vega.github.io/vega-lite/docs/spec.html) and [layered](https://vega.github.io/vega-lite/docs/layer.html) views.   * `"start"` for other composite views.   *   * __Note:__ [For now](https://github.com/vega/vega-lite/issues/2875), `anchor` is only customizable only for [single](https://vega.github.io/vega-lite/docs/spec.html) and [layered](https://vega.github.io/vega-lite/docs/layer.html) views. For other composite views, `anchor` is always `"start"`.   */  anchor?: TitleAnchor;
  /**   * A [mark style property](https://vega.github.io/vega-lite/docs/config.html#style) to apply to the title text mark.   *   * __Default value:__ `"group-title"`.   */  style?: string | string[];
  /**   * 	The integer z-index indicating the layering of the title group relative to other axis, mark and legend groups.   *   * __Default value:__ `0`.   *   * @TJS-type integer   * @minimum 0   */  zindex?: number;
  /**   * Mark definitions for custom encoding.   *   * @hidden   */  encoding?: TextEncodeEntry;}
export interface TitleParams<ES extends ExprRef | SignalRef> extends TitleBase<ES> {  /**   * The title text.   */  text: Text | ES;
  /**   * The subtitle Text.   */  subtitle?: Text;}
export function extractTitleConfig(  titleConfig: TitleConfig<SignalRef>): {  titleMarkConfig: MarkConfig<SignalRef>;  subtitleMarkConfig: MarkConfig<SignalRef>;  nonMark: BaseTitleNoValueRefs<SignalRef>;  subtitle: BaseTitleNoValueRefs<SignalRef>;} {  const {    // These are non-mark title config that need to be hardcoded    anchor,    frame,    offset,    orient,
    // color needs to be redirect to fill    color,
    // subtitle properties    subtitleColor,    subtitleFont,    subtitleFontSize,    subtitleFontStyle,    subtitleFontWeight,    subtitleLineHeight,    subtitlePadding,
    // The rest are mark config.    ...rest  } = titleConfig;
  const titleMarkConfig: MarkConfig<SignalRef> = {    ...rest,    ...(color ? {fill: color} : {})  };
  // These are non-mark title config that need to be hardcoded  const nonMark: BaseTitleNoValueRefs<SignalRef> = {    ...(anchor ? {anchor} : {}),    ...(frame ? {frame} : {}),    ...(offset ? {offset} : {}),    ...(orient ? {orient} : {})  };
  // subtitle part can stay in config.title since header titles do not use subtitle  const subtitle: BaseTitleNoValueRefs<SignalRef> = {    ...(subtitleColor ? {subtitleColor} : {}),    ...(subtitleFont ? {subtitleFont} : {}),    ...(subtitleFontSize ? {subtitleFontSize} : {}),    ...(subtitleFontStyle ? {subtitleFontStyle} : {}),    ...(subtitleFontWeight ? {subtitleFontWeight} : {}),    ...(subtitleLineHeight ? {subtitleLineHeight} : {}),    ...(subtitlePadding ? {subtitlePadding} : {})  };
  const subtitleMarkConfig = pick(titleMarkConfig, ['align', 'baseline', 'dx', 'dy', 'limit']);
  return {titleMarkConfig, subtitleMarkConfig, nonMark, subtitle};}
export function isText(v: any): v is Text {  return isString(v) || (isArray(v) && isString(v[0]));}