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| /*
* @license
* Copyright Hôpitaux Universitaires de Genève. All Rights Reserved.
*
* Use of this source code is governed by an Apache-2.0 license that can be
* found in the LICENSE file at https://github.com/DSI-HUG/dejajs-components/blob/master/LICENSE
*/
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { Component, ElementRef, EventEmitter, Input, OnDestroy, Optional, Output, Self } from '@angular/core';
import { ControlValueAccessor, NgControl } from '@angular/forms';
import { BehaviorSubject, combineLatest as observableCombineLatest, from as observableFrom, fromEvent as observableFromEvent, merge as observableMerge, Observable, Subject, timer as observableTimer } from 'rxjs';
import { debounce, debounceTime, distinctUntilChanged, filter, first, map, takeWhile, tap } from 'rxjs/operators';
import { Color } from '../../common/core/graphics/color';
import { MaterialColor } from '../../common/core/style/material-color';
import { DejaColorFab } from './color-fab.class';
const noop = () => { };
export interface IColorEvent extends CustomEvent {
color: Color;
}
/** Composant de selection d'une couleur. */
@Component({
selector: 'deja-color-selector',
styles: [
require('./color-selector.component.scss'),
],
template: require('./color-selector.component.html'),
})
export class DejaColorSelectorComponent implements ControlValueAccessor, OnDestroy {
private static indexAttribute = 'index';
/** Evénement déclenché lorsqu'une couleur est survolée par la souris. */
@Output() public colorhover = new EventEmitter<IColorEvent>();
public _resetcolor: Color;
// ngModel
public onTouchedCallback: () => void = noop;
public onChangeCallback: (_: any) => void = noop;
private _value: Color;
private _colors$ = new BehaviorSubject<Color[]>([]);
private _resetcolor$ = new BehaviorSubject<Color>(null);
private _colorFabs = [] as DejaColorFab[];
private _subColorFabs = [] as DejaColorFab[];
private _selectedBaseIndex = 0;
private _selectedSubIndex: number;
private _disabled = false;
private _colorFabs$: Observable<DejaColorFab[]>;
private selectedBaseIndex$ = new BehaviorSubject<number>(0);
private _subColorFabs$: Observable<DejaColorFab[]>;
private selectedSubIndex$ = new BehaviorSubject<number>(0);
private hilightedBaseIndex: number;
private hilightedBaseIndex$ = new Subject<number>();
private hilightedSubIndex: number;
private hilightedSubIndex$ = new Subject<number>();
private isAlive = true;
public get subColorFabs() {
return this._subColorFabs;
}
public get subColorFabs$() {
return this._subColorFabs$;
}
public get colorFabs$() {
return this._colorFabs$;
}
@Input() public set resetcolor(value: string | Color) {
Iif (value === '') { value = new Color(); }
const color = value && (typeof value === 'string' ? Color.parse(value) : value);
this._resetcolor$.next(color || null);
}
constructor(elementRef: ElementRef, @Self() @Optional() public _control: NgControl) {
const element = elementRef.nativeElement as HTMLElement;
if (this._control) {
this._control.valueAccessor = this;
}
this._colorFabs$ = observableFrom(this._colors$).pipe(
map((colors) => colors.map((color, index) => new DejaColorFab(color, this._disabled, index === this._selectedBaseIndex))),
tap((colorFabs) => this._colorFabs = colorFabs));
observableCombineLatest(this._colors$, this._resetcolor$).pipe(
takeWhile(() => this.isAlive))
.subscribe(([colors, resetcolor]) => {
if (!colors || !colors.length || !resetcolor) {
this._resetcolor = undefined;
return;
}
const allColors = colors.reduce((acc, color) => {
const materialColor = color as MaterialColor;
Eif (materialColor.subColors) {
acc = [...acc, ...materialColor.subColors];
} else {
acc.push(color);
}
return acc;
}, []);
let bestColor: Color;
allColors.reduce((bestDiff, color) => {
// The best formula we found for our eye
const diff = 0.3 * Math.abs(color.r - resetcolor.r) + 0.4 * Math.abs(color.g - resetcolor.g) + 0.25 * Math.abs(color.b - resetcolor.b);
if (diff < bestDiff) {
bestColor = color;
return bestDiff = diff;
}
return bestDiff;
}, 3 * 255);
this._resetcolor = bestColor;
});
const hilightedBaseIndex$ = observableFrom(this.hilightedBaseIndex$).pipe(
distinctUntilChanged(),
debounce((colorIndex) => observableTimer(colorIndex !== undefined ? 100 : 1000)),
tap((colorIndex) => {
this.hilightedBaseIndex = colorIndex;
const event = new CustomEvent('ColorEvent', {}) as IColorEvent;
event.color = colorIndex ? this._colorFabs && this._colorFabs[colorIndex] && this._colorFabs[colorIndex].color : this.value;
this.colorhover.emit(event);
}),
map((colorIndex) => colorIndex !== undefined ? colorIndex : this._selectedBaseIndex || 0));
const selectedBaseIndex$ = observableFrom(this.selectedBaseIndex$).pipe(
tap((colorIndex) => this._selectedBaseIndex = colorIndex));
this._subColorFabs$ = observableMerge(hilightedBaseIndex$, selectedBaseIndex$).pipe(
distinctUntilChanged(),
tap((colorIndex) => {
Eif (this._colorFabs) {
this._colorFabs.forEach((colorFab, index) => colorFab.active = index === colorIndex);
}
}),
debounceTime(100),
tap(() => element.setAttribute('sub-tr', '')),
map((baseIndex) => this._colorFabs && this._colorFabs[baseIndex] && (this._colorFabs[baseIndex].color as MaterialColor).subColors),
map((colors) => colors && colors.map((color, index) => new DejaColorFab(color, this._disabled, index === this._selectedSubIndex))),
tap((subColorFabs) => {
this._subColorFabs = subColorFabs;
observableTimer(100).pipe(first()).subscribe(() => {
element.removeAttribute('sub-tr');
});
}));
const hilightedSubIndex$ = observableFrom(this.hilightedSubIndex$).pipe(
distinctUntilChanged(),
debounce((subColorIndex) => observableTimer(subColorIndex !== undefined ? 200 : 1100)),
tap((subColorIndex) => {
this.hilightedSubIndex = subColorIndex;
const event = new CustomEvent('ColorEvent', {}) as IColorEvent;
event.color = subColorIndex !== undefined ? this._subColorFabs && this._subColorFabs[subColorIndex] && this._subColorFabs[subColorIndex].color : this.value;
this.colorhover.emit(event);
}),
map((subColorIndex) => subColorIndex !== undefined ? subColorIndex : this._selectedSubIndex || 0));
const selectedSubIndex$ = observableFrom(this.selectedSubIndex$).pipe(
distinctUntilChanged(),
tap((subColorIndex) => this._selectedSubIndex = subColorIndex));
observableMerge(hilightedSubIndex$, selectedSubIndex$).pipe(
takeWhile(() => this.isAlive))
.subscribe((subColorIndex) => {
Eif (this._subColorFabs) {
this._subColorFabs.forEach((colorFab, index) => colorFab.active = index === subColorIndex);
}
});
observableFromEvent(element, 'mousemove').pipe(
takeWhile(() => this.isAlive),
filter((_event) => !this._disabled))
.subscribe((event: Event) => {
const target = event.target as HTMLElement;
const targetIndex = (<any>target.attributes)[DejaColorSelectorComponent.indexAttribute];
Eif (target.hasAttribute('basecolor')) {
this.hilightedBaseIndex$.next(+targetIndex.value);
this.hilightedSubIndex$.next(this.hilightedSubIndex);
} else if (target.hasAttribute('subcolor')) {
this.hilightedBaseIndex$.next(this.hilightedBaseIndex);
this.hilightedSubIndex$.next(+targetIndex.value);
} else {
this.hilightedBaseIndex$.next();
this.hilightedSubIndex$.next();
}
});
observableFromEvent(element, 'click').pipe(
takeWhile(() => this.isAlive),
filter((_event) => !this._disabled))
.subscribe((event: Event) => {
const target = event.target as HTMLElement;
Eif (target.hasAttribute('basecolor') || target.hasAttribute('subcolor')) {
this.value = Color.parse(target.style.backgroundColor);
}
});
}
/** Retourne ou definit si le selecteur est desactivé. */
@Input()
public set disabled(value: boolean | string) {
const disabled = coerceBooleanProperty(value);
Eif (this._colorFabs) {
this._colorFabs.forEach((colorFab) => colorFab.disabled = disabled);
}
Eif (this._subColorFabs) {
this._subColorFabs.forEach((colorFab) => colorFab.disabled = disabled);
}
this._disabled = disabled || null;
}
public get disabled() {
return this._disabled;
}
/**
* Retourne la meilleure couleur d'affichage pour une couleur donnée
*/
public getBestTextColor(value: string) {
const backColor = Color.fromHex(value);
return backColor.bestTextColor.toHex();
}
public resetDefaultColor() {
this.value = this._resetcolor;
}
/**
* Definit les couleurs selectionables affichées.
*
* @param colors Structure hierarchique des couleurs selectionablea suivant le modele MaterialColor.
*/
@Input()
public set colors(colors: Color[]) {
this._colors$.next(colors || []);
this.selectedBaseIndex$.next(0);
}
public set selectedColor(color: Color) {
Eif (this._colorFabs) {
const find = this._colorFabs.find((colorFab, index) => {
const baseColor = colorFab.color as MaterialColor;
const subIndex = baseColor.subColors && baseColor.subColors.findIndex((subColor) => Color.equals(subColor, color));
if (subIndex !== undefined && subIndex >= 0) {
this.selectedBaseIndex$.next(index);
observableTimer(1).pipe(first()).subscribe(() => this.selectedSubIndex$.next(subIndex));
// Break
return true;
} else Iif (Color.equals(baseColor, color)) {
this.selectedBaseIndex$.next(index);
observableTimer(1).pipe(first()).subscribe(() => this.selectedSubIndex$.next(0));
// Break
return true;
}
// Continue
return false;
});
if (!find) {
this.selectedBaseIndex$.next(0);
observableTimer(1).pipe(first()).subscribe(() => this.selectedSubIndex$.next(0));
}
}
}
// ************* ControlValueAccessor Implementation **************
// set accessor including call the onchange callback
public set value(value: Color) {
Eif (!Color.equals(value, this._value)) {
this.writeValue(value);
this.onChangeCallback(value);
}
}
// get accessor
public get value(): Color {
return this._value;
}
// From ControlValueAccessor interface
public writeValue(value: Color) {
this._value = value;
this.selectedColor = value;
}
// From ControlValueAccessor interface
public registerOnChange(fn: any) {
this.onChangeCallback = fn;
}
// From ControlValueAccessor interface
public registerOnTouched(fn: any) {
this.onTouchedCallback = fn;
}
public setDisabledState(isDisabled: boolean) {
this.disabled = isDisabled;
}
// ************* End of ControlValueAccessor Implementation **************
public ngOnDestroy() {
this.isAlive = false;
}
}
|