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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
Component,
ElementRef,
EventEmitter,
Input,
NgZone,
OnChanges,
OnDestroy,
OnInit,
Output,
QueryList,
SimpleChanges,
TemplateRef,
ViewChild,
ViewChildren,
} from '@angular/core';
import { badgeListAsString, observeSize } from '../utils/internal-utils';
import {
BadgeItem,
Callback,
Item,
Key,
LinkItem,
Nullable,
SlotItem,
} from '../utils/util.types';
import { SoundType, playSound } from '../utils/utilities';
import { ComponentMapperDirective } from '../internal/component-mapper.directive';
import {
ButtonComponent,
ButtonContentDisplay,
} from '../button/button.component';
import {
DynamicHeadingLevelPassthroughService,
DynamicHeadingLevelService,
} from '../dynamic-heading/dynamic-heading-level.service';
/**
* Slot where the item is shown:
* - header: in the header area
* - footer: in the footer area
*/
export type FormSlots = 'header' | 'footer';
type ResponsiveButtonState = 'default' | 'icon-only' | 'in-menu';
/**
* Control the undo/redo buttons
*/
export interface UndoRedoTexts {
/** text displayed on the undo button, null means disabled */
readonly undo: string | null;
/** text displayed on the redo button, null means disabled */
readonly redo: string | null;
}
/**
* Types of the status which the form can have.
*/
export type FormStatus = 'success' | 'in-progress' | 'default' | 'loading';
/**
* `gc-form` is a layout container used to display input forms.
*/
@Component({
selector: 'gc-form',
templateUrl: './form.component.html',
styleUrls: ['./form.component.css'],
providers: [DynamicHeadingLevelService],
viewProviders: [
{
provide: DynamicHeadingLevelService,
useClass: DynamicHeadingLevelPassthroughService,
},
],
})
export class FormComponent implements OnInit, OnDestroy, OnChanges {
/**
* @ignore
*/
@ViewChild('errorElement', { read: ElementRef })
public errorElement?: ElementRef<HTMLElement>;
/**
* @ignore
*/
@ViewChild('formContent')
public contentElement?: ElementRef<HTMLElement>;
/**
* @ignore
*/
@ViewChild('formContainer')
public containerElement!: ElementRef<HTMLElement>;
/**
* @ignore
*/
@ViewChild('gc_ref_undo')
public undoElement?: ButtonComponent;
/**
* @ignore
*/
@ViewChild('gc_ref_redo')
public redoElement?: ButtonComponent;
/**
* Title displayed in the header
*/
@Input()
public label = '';
/**
* Title displayed in the header above the label
*/
@Input()
public subLabel = '';
/**
* Actions shown in the form.
*/
@Input()
public actions: readonly SlotItem<FormSlots>[] = [];
/**
* key of the primary action shown in the footer
*/
@Input()
public primaryFooterActionKey = '';
/**
* Footer actions which are rendered with icons for the responsive design. Actual icons must be provided via `footerActionIconTemplate`.
*/
@Input()
public footerActionIconKeys: ReadonlySet<string> = new Set();
/**
* A template that contains all icons for the menu items for the responsive design
*/
@Input()
public footerActionIconTemplate?: TemplateRef<unknown>;
/**
* List of items that will appear in the error section as buttons
*/
@Input()
public errorItems: readonly Item[] = [];
/**
* List of InfoItem elements that will be rendered as hint items below the form header.
*/
@Input()
public topInfo: readonly LinkItem[] = [];
/**
* Title of the top hint section.
*/
@Input()
public topInfoTitle = '';
/**
* List of InfoItem elements that will be rendered as hint items above the form footer.
*/
@Input()
public bottomInfo: readonly LinkItem[] = [];
/**
* Title of the bottom hint section.
*/
@Input()
public bottomInfoTitle = '';
/**
* Title of the error section
*/
@Input()
public errorTitle = '';
/**
* List of items that will appear in the header section as badges
*/
@Input()
public badgeItems: readonly BadgeItem[] = [];
/**
* Text that can be used as a descriptive message for the status.
*/
@Input()
public statusText = '';
/**
* Keys of error items, which are changed in the form
*/
@Input()
public changedErrorItemKeys: readonly string[] = [];
/** Optional icon provider to use for menu-items in the form-header */
@Input()
public headerMenuItemIconProvider?: TemplateRef<unknown>;
/**
* Event emitted when Undo-Button is pressed
*/
@Output()
public readonly onUndo: EventEmitter<unknown> = new EventEmitter();
/**
* Event emitted when Redo-Button is pressed
*/
@Output()
public readonly onRedo: EventEmitter<unknown> = new EventEmitter();
/**
* Event emitted when an item is selected
*/
@Output()
public readonly onItemAction: EventEmitter<SlotItem<FormSlots>> =
new EventEmitter<SlotItem<FormSlots>>();
/**
* Event emitted when an error item is pressed
*/
@Output()
public readonly onErrorItemAction: EventEmitter<Item> =
new EventEmitter<Item>();
/**
* @ignore
*/
@ViewChild('footerButtonsLeft')
private footerButtonsLeftContainer?: ElementRef<HTMLDivElement>;
/**
* @ignore
*/
@ViewChild('footerButtonsRightResponsiveCalc')
private footerButtonsRightContainer?: ElementRef<HTMLDivElement>;
/** @ignore */
@ViewChildren('footerActionButton', { read: ComponentMapperDirective })
private footerActionButtons?: QueryList<
ComponentMapperDirective<ButtonComponent>
>;
/** @ignore */
@ViewChildren('footerActionButtonCalc', { read: ElementRef })
private footerActionButtonsCalc?: QueryList<ElementRef<HTMLElement>>;
/**
* Current status of the form.
*/
@Input()
public get status(): FormStatus {
return this._status;
}
public set status(value: FormStatus) {
if (value === 'success') {
void playSound(SoundType.SUCCESS);
}
this._status = value;
}
/**
* keys of all disabled actions
*/
@Input()
public get disabledActionKeys(): ReadonlySet<string> {
return this._disabledActionKeys;
}
public set disabledActionKeys(value: ReadonlySet<string>) {
this._disabledActionKeys = value;
}
/**
* Update the undo/redo information
* - null: no undo/redo buttons are shown
* - { undo: '...', redo: null }: undo enabled, redo disabled
* - { undo: null, redo: '...' }: undo disabled, redo enabled
*/
@Input()
public get undoRedoTexts(): Nullable<UndoRedoTexts> {
return this._undoRedoTexts;
}
public set undoRedoTexts(value: Nullable<UndoRedoTexts>) {
this._undoRedoTexts = value;
this.refreshUndoRedoState();
}
/**
* @ignore
*/
_errorSectionSmall = false;
/**
* @ignore
*/
public _showHeaderSeparator = false;
/**
* @ignore
*/
public _undoDisabled = false;
/**
* @ignore
*/
public _redoDisabled = false;
/** @ignore */
protected _responsiveType: 'default' | 'medium' | 'small' = 'default';
/**
* @ignore
*/
protected _footerMenuButtonEnabled = false;
/**
* @ignore
*/
protected _footerPrimaryButtonWrap = false;
/**
* @ignore
*/
protected _footerButtonsResponsiveState: Map<Key, ResponsiveButtonState> =
new Map();
/**
* @ignore
*/
private _disabledActionKeys: ReadonlySet<string> = new Set<string>();
/**
* @ignore
*/
private resizeObserver?: Callback;
/**
* @ignore
*/
private _status: FormStatus = 'default';
/**
* @ignore
*/
private _undoRedoTexts: Nullable<UndoRedoTexts> = null;
/** @ignore */
private _disabledElements: Map<Element, string | null> = new Map<
Element,
string | null
>();
constructor(
private el: ElementRef<HTMLElement>,
private zone: NgZone,
) {}
/**
* Focus the element which corresponds to triggering a specific action.
*
* Note that this currently only works for footer actions.
*
* @param key the key of the `action` to focus
* @returns `true` if focus has been transferred
*/
public focusAction(key: string): boolean {
const button = this.footerActionButtons?.find(
i => i.key === key,
)?.component;
if (button) {
return button.focusChild();
} else {
return false;
}
}
/**
* Moves the focus to the error section
*
* @returns `true` if the focus has been transfered
*/
public moveFocusToError(): boolean {
if (this.errorElement) {
this.errorElement.nativeElement.focus();
return true;
}
return false;
}
/**
* @ignore
*/
ngOnInit(): void {
this.resizeObserver = observeSize(
this.el,
this.zone,
this.resizeObserverCallback.bind(this),
);
}
/**
* @ignore
*/
ngOnDestroy(): void {
if (this.resizeObserver) {
this.resizeObserver();
}
}
/**
* @ignore
*/
ngOnChanges(changes: SimpleChanges): void {
if ('actions' in changes) {
// wait for new actions to be rendered in footerButtonsRightResponsiveCalc, before calculating new responsive design
setTimeout(() => {
this.recomputeResponsiveFooter();
});
}
}
/**
* @ignore
*/
_isItemDisabled(item: SlotItem<FormSlots>): boolean {
return this.disabledActionKeys.has(item.key);
}
/**
* @ignore
*/
public _filterSlot(
items: readonly SlotItem<FormSlots>[],
slot: FormSlots,
): readonly SlotItem<FormSlots>[] {
return items.filter(item => item.slot === slot);
}
/** @ignore */
protected _filterSlotDisabledKeys(
items: readonly SlotItem<FormSlots>[],
slot: FormSlots,
): Set<Key> {
return new Set(
this._filterSlot(items, slot)
.filter(i => this._isItemDisabled(i))
.map(i => i.key),
);
}
/**
* @ignore
*/
protected _filterSlotVisibleButtons(
items: readonly SlotItem<FormSlots>[],
slot: FormSlots,
): readonly SlotItem<FormSlots>[] {
return this._filterSlot(items, slot).filter(
i => this._footerButtonsResponsiveState.get(i.key) !== 'in-menu',
);
}
/** @ignore */
protected _handleHeaderAction(item: Item): void {
this.onItemAction.emit(item as SlotItem<FormSlots>);
}
/** @ignore */
protected _handleFooterMenuAction(key: string): void {
if (key === 'undo') {
this.onUndo.emit();
}
if (key === 'redo') {
this.onRedo.emit();
}
}
/** @ignore */
protected _getDisabledFooterMenuItemKeys(): ReadonlySet<string> {
const disabledKeys = this._filterSlotDisabledKeys(this.actions, 'footer');
if (this._undoDisabled) {
disabledKeys.add('undo');
}
if (this._redoDisabled) {
disabledKeys.add('redo');
}
return disabledKeys;
}
/** @ignore */
protected _checkErrorItemsKeys(): boolean {
return this.errorItems.every(i =>
this.changedErrorItemKeys.includes(i.key),
);
}
/**
* @ignore
*/
protected _getFooterButtonContentDisplay(key: string): ButtonContentDisplay {
if (this._footerButtonsResponsiveState.get(key) === 'icon-only') {
return 'icon-only';
} else if (
this.primaryFooterActionKey === key &&
this.status !== 'default'
) {
return 'status';
} else {
return 'text-only';
}
}
/** @ignore */
protected _handleContentScroll(): void {
this.recomputeHeader();
}
/** @ignore */
protected _redoText(plain?: boolean): string {
if (typeof this.undoRedoTexts?.redo === 'string') {
if (plain) {
return this.undoRedoTexts.redo;
}
return this.undoRedoTexts.redo.replace(
'Wiederherstellen',
'**Wiederherstellen**',
);
}
return 'Wiederherstellen';
}
/** @ignore */
protected _undoText(plain?: boolean): string {
if (typeof this.undoRedoTexts?.undo === 'string') {
if (plain) {
return this.undoRedoTexts.undo;
}
return this.undoRedoTexts.undo.replace('Rückgängig', '**Rückgängig**');
}
return 'Rückgängig';
}
/**
* @ignore
*/
protected _handleErrorItemAction(item: Item): void {
this.onErrorItemAction.emit(item);
}
/**
* @ignore
*/
protected hasCorrespondingFieldChanged(itemKey: string): boolean {
return this.changedErrorItemKeys.some(v => v === itemKey);
}
/** @ignore */
protected _footerMenuItems(): readonly Item[] {
return [
...this.actions.filter(
action =>
this._footerButtonsResponsiveState.get(action.key) === 'in-menu',
),
{ key: 'undo', label: this._undoText(true) },
{ key: 'redo', label: this._redoText(true) },
];
}
/** @ignore */
protected _hasCriticalBadge() {
return this.badgeItems.findIndex(b => b.status === 'critical') != -1;
}
/** @ignore */
protected _hasDefaultBadge() {
return this.badgeItems.findIndex(b => b.status !== 'critical') != -1;
}
/** @ignore */
protected _defaultBadgeItems() {
return this.badgeItems.filter(b => b.status !== 'critical');
}
/** @ignore */
protected _criticalBadgeItems(): BadgeItem[] {
return this.badgeItems
.filter(b => b.status === 'critical')
.map(b => {
return { ...b, showIcon: true } satisfies BadgeItem;
});
}
/** @ignore */
protected _badgeString(items: BadgeItem[]) {
return badgeListAsString(items);
}
/** @ignore */
private resizeObserverCallback(): void {
this.recomputeErrorSection();
this.recomputeHeader();
this.recomputeResponsiveFooter();
this.computeScrollareas();
}
/**
* @ignore
*/
private recomputeHeader() {
if (this.contentElement?.nativeElement) {
this._showHeaderSeparator =
this.contentElement.nativeElement.scrollTop > 0;
}
}
/**
* @ignore
*/
private recomputeErrorSection(): void {
if (
this.contentElement?.nativeElement &&
this.contentElement.nativeElement.getBoundingClientRect().width < 400
) {
this._errorSectionSmall = true;
} else {
this._errorSectionSmall = false;
}
}
/**
* @ignore
*/
private computeScrollareas() {
const formHeight = this.el.nativeElement.getBoundingClientRect().height;
if (formHeight <= 432) {
this._responsiveType = 'small';
} else if (formHeight <= 672) {
this._responsiveType = 'medium';
} else {
this._responsiveType = 'default';
}
}
/**
* @ignore
*/
private recomputeResponsiveFooter(): void {
if (this.footerButtonsLeftContainer && this.footerButtonsRightContainer) {
if (this.undoRedoTexts === null) {
return;
}
const formWidth = this.el.nativeElement.getBoundingClientRect().width;
const footerButtonsRightContainerWidth =
this.footerButtonsRightContainer.nativeElement.getBoundingClientRect()
.width;
const computedMargin = Number.parseFloat(
getComputedStyle(this.el.nativeElement).getPropertyValue(
'--gc-form-box-margin',
),
);
const margin = isNaN(computedMargin) ? 0 : computedMargin;
const horizontalPadding = 16;
const availableWidth = formWidth - 2 * horizontalPadding - margin * 2;
const iconButtonWidth = 40;
const buttonSpacing = 16;
const undoRedoArea = iconButtonWidth * 2 + buttonSpacing;
const total =
footerButtonsRightContainerWidth + buttonSpacing + undoRedoArea;
this._footerMenuButtonEnabled = total > availableWidth;
this._footerButtonsResponsiveState =
this.updateResponsiveFooterButtons(availableWidth);
this._footerPrimaryButtonWrap = [
...this._footerButtonsResponsiveState,
].every(([, val]) => {
return val === 'in-menu';
});
}
}
/**
* @ignore
*/
private updateResponsiveFooterButtons(
availableWidth: number,
): Map<string, ResponsiveButtonState> {
const buttonSpacing = 16;
const iconButtonWidth = 40;
const primaryButtonWidth = this.footerActionButtonsCalc?.find(
i =>
i.nativeElement.dataset.formResponsiveCalcButtonKey ===
this.primaryFooterActionKey,
)?.nativeElement.clientWidth;
const responsiveButtons: Map<Key, ResponsiveButtonState> = new Map();
this._filterSlot(this.actions, 'footer').forEach(action => {
if (action.key !== this.primaryFooterActionKey) {
responsiveButtons.set(action.key, 'default');
}
});
responsiveButtons.forEach((_value, key) => {
if (
key !== this.primaryFooterActionKey &&
this.footerButtonsRightContainer &&
primaryButtonWidth
) {
const footerRigthWidth =
this.calcResponsiveFooterWidth(responsiveButtons);
const requiredWidth =
iconButtonWidth +
buttonSpacing +
footerRigthWidth +
primaryButtonWidth;
const fullButtonWidth = this.footerActionButtonsCalc?.find(
i => i.nativeElement.dataset.formResponsiveCalcButtonKey === key,
)?.nativeElement.clientWidth;
if (
fullButtonWidth &&
requiredWidth - fullButtonWidth + iconButtonWidth > availableWidth
) {
responsiveButtons.set(key, 'in-menu');
} else if (requiredWidth > availableWidth) {
if (this.footerActionIconKeys.has(key)) {
responsiveButtons.set(key, 'icon-only');
} else {
responsiveButtons.set(key, 'in-menu');
}
} else {
responsiveButtons.set(key, 'default');
}
}
});
return responsiveButtons;
}
/**
* @ignore
*/
private calcResponsiveFooterWidth(
responsiveState: Map<string, ResponsiveButtonState>,
) {
const iconButtonWidth = 40;
const buttonSpacing = 16;
let width = 0;
responsiveState.forEach((state, key) => {
if (state === 'icon-only') {
width = width + iconButtonWidth + buttonSpacing;
} else if (state === 'default') {
const buttonWidth = this.footerActionButtonsCalc?.find(
i => i.nativeElement.dataset.formResponsiveCalcButtonKey === key,
)?.nativeElement.clientWidth;
if (buttonWidth !== undefined) {
width = width + buttonWidth + buttonSpacing;
}
}
});
return width;
}
/**
* @ignore
*/
private refreshUndoRedoState() {
if (this.undoRedoTexts === null) {
return;
}
const newUndo = this.undoRedoTexts.undo === null;
const newRedo = this.undoRedoTexts.redo === null;
const curUndo = this._undoDisabled;
const curRedo = this._redoDisabled;
this._undoDisabled = newUndo;
this._redoDisabled = newRedo;
const undoElement = this.undoElement;
const redoElement = this.redoElement;
if (
undoElement !== undefined &&
redoElement !== undefined &&
((!curUndo && newUndo) || (!curRedo && newRedo))
) {
const undoFocused = undoElement.hasFocus;
const redoFocused = redoElement.hasFocus;
if (undoFocused && !curUndo && newUndo) {
this.updateUndoFocus();
} else if (redoFocused && !curRedo && newRedo) {
this.updateRedoFocus();
}
}
}
/**
* @ignore
*/
private updateUndoFocus() {
if (
(this._undoDisabled && this._redoDisabled) ||
this.redoElement === undefined
) {
this.shiftFocusToOutside();
} else if (this._undoDisabled && !this._redoDisabled) {
this.redoElement.focusChild();
}
}
/**
* @ignore
*/
private updateRedoFocus() {
if (
(this._undoDisabled && this._redoDisabled) ||
this.undoElement === undefined
) {
this.shiftFocusToOutside();
} else if (this._redoDisabled && !this._undoDisabled) {
this.undoElement.focusChild();
}
}
/**
* @ignore
*/
private shiftFocusToOutside() {
console.info('Unable to move focus to undo/redo button');
}
}
|