@looorent/ngx-simple-modal
Version:
A simple unopinionated framework to implement simple modal based behaviour in angular (v2+) projects.
222 lines • 27 kB
JavaScript
import { Component, Inject, ViewContainerRef, ViewChild } from '@angular/core';
import { of } from 'rxjs';
import { DefaultSimpleModalOptionConfig } from './simple-modal-options';
import { SimpleModalWrapperComponent } from './simple-modal-wrapper.component';
import { DraggableDirective } from './simple-modal-draggable.directive';
import * as i0 from "@angular/core";
/**
* View container manager which manages a list of modals currently active
* inside the viewvontainer
*/
class SimpleModalHolderComponent {
resolver;
renderer;
ngZone;
defaultSimpleModalOptions;
/**
* Target viewContainer to insert modals
*/
viewContainer;
/**
* modal collection, maintained by addModal and removeModal
* @type {Array<SimpleModalComponent> }
*/
modals = [];
/**
* if auto focus is on and no element focused, store it here to be restored back after close
*/
previousActiveElement = null;
/**
* Constructor
* @param {ComponentFactoryResolver} resolver
* @param renderer
* @param ngZone
* @param defaultSimpleModalOptions
*/
constructor(resolver, renderer, ngZone, defaultSimpleModalOptions) {
this.resolver = resolver;
this.renderer = renderer;
this.ngZone = ngZone;
this.defaultSimpleModalOptions = defaultSimpleModalOptions;
}
/**
* Configures then adds modal to the modals array, and populates with data passed in
* @param {Type<SimpleModalComponent>} component
* @param {object?} data
* @param {SimpleModalOptionsOverrides?} options
* @return {Observable<*>}
*/
addModal(component, data, options) {
// create component
if (!this.viewContainer) {
return of(null);
}
const factory = this.resolver.resolveComponentFactory(SimpleModalWrapperComponent);
const componentRef = this.viewContainer.createComponent(factory);
const modalWrapper = (componentRef.instance);
const { ref: _componentRef, component: _component } = modalWrapper.addComponent(component);
// assign options refs
_component.options = options = Object.assign({}, this.defaultSimpleModalOptions, options);
// set base classes for wrapper
modalWrapper.modalClasses = options.wrapperDefaultClasses;
// add to stack
this.modals.push(_component);
// wait a tick then setup the following while adding a modal
this.wait().then(() => {
this.toggleWrapperClass(modalWrapper.wrapper, options.wrapperClass);
this.toggleBodyClass(options.bodyClass);
if (options.draggable) {
this.setDraggable(_componentRef, options);
}
this.wait(options.animationDuration).then(() => {
this.autoFocusFirstElement(_component.wrapper, options.autoFocus);
_component.markAsReady();
});
});
// when closing modal remove it
_component.onClosing(modal => this.removeModal(modal));
// if clicking on background closes modal
this.configureCloseOnClickOutside(modalWrapper);
// map and return observable
_component.mapDataObject(data);
return _component.setupObserver();
}
/**
* triggers components close function
* to take effect
* @returns {Promise<void>}
* @param closingModal
*/
removeModal(closingModal) {
const options = closingModal.options;
this.toggleWrapperClass(closingModal.wrapper, options.wrapperClass);
return this.wait(options.animationDuration).then(() => {
this.removeModalFromArray(closingModal);
this.toggleBodyClass(options.bodyClass);
this.restorePreviousFocus();
});
}
/**
* Instructs all open modals to
*/
removeAllModals() {
return Promise.all(this.modals.map(modal => this.removeModal(modal)));
}
/**
* Bind a body class 'modal-open' to a condition of modals in pool > 0
* @param bodyClass - string to add and remove from body in document
*/
toggleBodyClass(bodyClass) {
if (!bodyClass) {
return;
}
const body = document.getElementsByTagName('body')[0];
const bodyClassItems = bodyClass.split(' ');
if (!this.modals.length) {
body.classList.remove(...bodyClassItems);
}
else {
body.classList.add(...bodyClassItems);
}
}
/**
* if the option to close on background click is set, then hook up a callback
* @param modalWrapper
*/
configureCloseOnClickOutside(modalWrapper) {
modalWrapper.onClickOutsideModalContent(() => {
if (modalWrapper.content.options.closeOnClickOutside) {
modalWrapper.content.close();
}
});
}
/**
* Auto focus o the first element if autofocus is on
* @param componentWrapper
* @param autoFocus
*/
autoFocusFirstElement(componentWrapper, autoFocus) {
if (autoFocus) {
const focusable = componentWrapper.nativeElement.querySelectorAll('button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])');
if (focusable && focusable.length) {
this.previousActiveElement = document.activeElement;
focusable[0].focus();
}
}
}
/**
* Restores the last focus is there was one
*/
restorePreviousFocus() {
if (this.previousActiveElement) {
this.previousActiveElement.focus();
this.previousActiveElement = null;
}
}
/**
* Configure the adding and removal of a wrapper class - predominantly animation focused
* @param modalWrapperEl
* @param wrapperClass
*/
toggleWrapperClass(modalWrapperEl, wrapperClass) {
const wrapperClassList = modalWrapperEl.nativeElement.classList;
const wrapperClassItems = wrapperClass.split(' ');
if (wrapperClassList.toString().indexOf(wrapperClass) !== -1) {
wrapperClassList.remove(...wrapperClassItems);
}
else {
wrapperClassList.add(...wrapperClassItems);
}
}
/**
* Enables the drag option on the modal if the options have it enabled
* @param component
* @param options
* @private
*/
setDraggable(component, options) {
const draggableDirective = new DraggableDirective(component.location, this.ngZone, this.renderer);
draggableDirective.dragTarget = component.location.nativeElement;
draggableDirective.dragHandle = component.instance.handle ? component.instance.handle.nativeElement : undefined;
draggableDirective.ngAfterViewInit();
component.location.nativeElement.classList.add(options.draggableClass);
}
/**
* Helper function for a more readable timeout
* @param ms
*/
wait(ms = 0) {
return new Promise((resolve, reject) => {
setTimeout(() => resolve(undefined), ms);
});
}
/**
* Instructs the holder to remove the modal and
* removes this component from the collection
* @param {SimpleModalComponent} component
*/
removeModalFromArray(component) {
const index = this.modals.indexOf(component);
if (index > -1) {
this.viewContainer.remove(index);
this.modals.splice(index, 1);
}
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.3", ngImport: i0, type: SimpleModalHolderComponent, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.Renderer2 }, { token: i0.NgZone }, { token: DefaultSimpleModalOptionConfig }], target: i0.ɵɵFactoryTarget.Component });
static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.3", type: SimpleModalHolderComponent, selector: "simple-modal-holder", viewQueries: [{ propertyName: "viewContainer", first: true, predicate: ["viewContainer"], descendants: true, read: ViewContainerRef, static: true }], ngImport: i0, template: '<ng-template #viewContainer></ng-template>', isInline: true });
}
export { SimpleModalHolderComponent };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.3", ngImport: i0, type: SimpleModalHolderComponent, decorators: [{
type: Component,
args: [{
selector: 'simple-modal-holder',
template: '<ng-template #viewContainer></ng-template>',
}]
}], ctorParameters: function () { return [{ type: i0.ComponentFactoryResolver }, { type: i0.Renderer2 }, { type: i0.NgZone }, { type: undefined, decorators: [{
type: Inject,
args: [DefaultSimpleModalOptionConfig]
}] }]; }, propDecorators: { viewContainer: [{
type: ViewChild,
args: ['viewContainer', { read: ViewContainerRef, static: true }]
}] } });
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{ Component, ComponentFactoryResolver, ElementRef, Inject, Type, ViewContainerRef, ViewChild, Renderer2, ComponentRef, NgZone } from '@angular/core';\nimport { Observable, of } from 'rxjs';\nimport { DefaultSimpleModalOptionConfig, SimpleModalOptions, SimpleModalOptionsOverrides } from './simple-modal-options';\nimport { SimpleModalWrapperComponent } from './simple-modal-wrapper.component';\nimport { SimpleModalComponent } from './simple-modal.component';\nimport { DraggableDirective } from './simple-modal-draggable.directive';\n\n/**\n * View container manager which manages a list of modals currently active\n * inside the viewvontainer\n */\n@Component({\n  selector: 'simple-modal-holder',\n  template: '<ng-template #viewContainer></ng-template>',\n})\nexport class SimpleModalHolderComponent {\n  /**\n   * Target viewContainer to insert modals\n   */\n  @ViewChild('viewContainer', { read: ViewContainerRef, static: true }) viewContainer;\n\n  /**\n   * modal collection, maintained by addModal and removeModal\n   * @type {Array<SimpleModalComponent> }\n   */\n  modals: Array<SimpleModalComponent<any, any>> = [];\n\n  /**\n   * if auto focus is on and no element focused, store it here to be restored back after close\n   */\n  previousActiveElement = null;\n\n  /**\n   * Constructor\n   * @param {ComponentFactoryResolver} resolver\n   * @param renderer\n   * @param ngZone\n   * @param defaultSimpleModalOptions\n   */\n  constructor(\n    private resolver: ComponentFactoryResolver,\n    private renderer: Renderer2,\n    private ngZone: NgZone,\n    @Inject(DefaultSimpleModalOptionConfig) private defaultSimpleModalOptions: SimpleModalOptions,\n  ) {\n  }\n\n  /**\n   * Configures then adds modal to the modals array, and populates with data passed in\n   * @param {Type<SimpleModalComponent>} component\n   * @param {object?} data\n   * @param {SimpleModalOptionsOverrides?} options\n   * @return {Observable<*>}\n   */\n  addModal<T, T1>(\n    component: Type<SimpleModalComponent<T, T1>>,\n    data?: T,\n    options?: SimpleModalOptionsOverrides,\n  ): Observable<T1> {\n    // create component\n    if (!this.viewContainer) {\n      return of(null);\n    }\n    const factory = this.resolver.resolveComponentFactory(SimpleModalWrapperComponent);\n    const componentRef = this.viewContainer.createComponent(factory);\n    const modalWrapper: SimpleModalWrapperComponent = <SimpleModalWrapperComponent>(\n      componentRef.instance\n    );\n    const { ref: _componentRef, component: _component } = modalWrapper.addComponent(component);\n\n    // assign options refs\n    _component.options = options = Object.assign({}, this.defaultSimpleModalOptions, options) as SimpleModalOptions;\n\n    // set base classes for wrapper\n    modalWrapper.modalClasses = options.wrapperDefaultClasses;\n\n    // add to stack\n    this.modals.push(_component);\n\n    // wait a tick then setup the following while adding a modal\n    this.wait().then(() => {\n      this.toggleWrapperClass(modalWrapper.wrapper, options.wrapperClass);\n      this.toggleBodyClass(options.bodyClass);\n      if (options.draggable) {\n        this.setDraggable(_componentRef, options);\n      }\n      this.wait(options.animationDuration).then(() => {\n        this.autoFocusFirstElement(_component.wrapper, options.autoFocus);\n        _component.markAsReady();\n      });\n    });\n\n    // when closing modal remove it\n    _component.onClosing(modal => this.removeModal(modal));\n\n    // if clicking on background closes modal\n    this.configureCloseOnClickOutside(modalWrapper);\n\n    // map and return observable\n    _component.mapDataObject(data);\n\n    return _component.setupObserver();\n  }\n\n  /**\n   * triggers components close function\n   * to take effect\n   * @returns {Promise<void>}\n   * @param closingModal\n   */\n  removeModal(closingModal: SimpleModalComponent<any, any>): Promise<any> {\n    const options = closingModal.options;\n    this.toggleWrapperClass(closingModal.wrapper, options.wrapperClass);\n    return this.wait(options.animationDuration).then(() => {\n      this.removeModalFromArray(closingModal);\n      this.toggleBodyClass(options.bodyClass);\n      this.restorePreviousFocus();\n    });\n  }\n\n  /**\n   * Instructs all open modals to\n   */\n  removeAllModals(): Promise<any> {\n    return Promise.all(this.modals.map(modal => this.removeModal(modal)));\n  }\n\n  /**\n   * Bind a body class 'modal-open' to a condition of modals in pool > 0\n   * @param bodyClass - string to add and remove from body in document\n   */\n  private toggleBodyClass(bodyClass: string): void {\n    if (!bodyClass) {\n      return;\n    }\n    const body = document.getElementsByTagName('body')[0];\n    const bodyClassItems = bodyClass.split(' ');\n    if (!this.modals.length) {\n      body.classList.remove(...bodyClassItems);\n    } else {\n      body.classList.add(...bodyClassItems);\n    }\n  }\n\n  /**\n   * if the option to close on background click is set, then hook up a callback\n   * @param modalWrapper\n   */\n  private configureCloseOnClickOutside(modalWrapper: SimpleModalWrapperComponent) {\n    modalWrapper.onClickOutsideModalContent(() => {\n      if (modalWrapper.content.options.closeOnClickOutside) {\n        modalWrapper.content.close();\n      }\n    });\n  }\n\n  /**\n   * Auto focus o the first element if autofocus is on\n   * @param componentWrapper\n   * @param autoFocus\n   */\n  private autoFocusFirstElement(componentWrapper: ElementRef, autoFocus: boolean) {\n    if (autoFocus) {\n      const focusable = componentWrapper.nativeElement.querySelectorAll(\n        'button, [href], input, select, textarea, [tabindex]:not([tabindex=\"-1\"])',\n      );\n      if (focusable && focusable.length) {\n        this.previousActiveElement = document.activeElement;\n        focusable[0].focus();\n      }\n    }\n  }\n\n  /**\n   * Restores the last focus is there was one\n   */\n  private restorePreviousFocus() {\n    if (this.previousActiveElement) {\n      this.previousActiveElement.focus();\n      this.previousActiveElement = null;\n    }\n  }\n\n  /**\n   * Configure the adding and removal of a wrapper class - predominantly animation focused\n   * @param modalWrapperEl\n   * @param wrapperClass\n   */\n  private toggleWrapperClass(modalWrapperEl: ElementRef, wrapperClass: string): void {\n    const wrapperClassList = modalWrapperEl.nativeElement.classList;\n    const wrapperClassItems = wrapperClass.split(' ');\n    if (wrapperClassList.toString().indexOf(wrapperClass) !== -1) {\n      wrapperClassList.remove(...wrapperClassItems);\n    } else {\n      wrapperClassList.add(...wrapperClassItems);\n    }\n  }\n\n  /**\n   * Enables the drag option on the modal if the options have it enabled\n   * @param component\n   * @param options\n   * @private\n   */\n  private setDraggable(component: ComponentRef<SimpleModalComponent<any, any>>, options: SimpleModalOptionsOverrides): void {\n    const draggableDirective = new DraggableDirective(component.location, this.ngZone, this.renderer);\n    draggableDirective.dragTarget = component.location.nativeElement;\n    draggableDirective.dragHandle = component.instance.handle ? component.instance.handle.nativeElement : undefined;\n    draggableDirective.ngAfterViewInit();\n    component.location.nativeElement.classList.add(options.draggableClass);\n  }\n\n  /**\n   * Helper function for a more readable timeout\n   * @param ms\n   */\n  private wait(ms: number = 0): Promise<unknown> {\n    return new Promise<unknown>((resolve, reject) => {\n      setTimeout(() => resolve(undefined), ms);\n    });\n  }\n\n  /**\n   * Instructs the holder to remove the modal and\n   * removes this component from the collection\n   * @param {SimpleModalComponent} component\n   */\n  private removeModalFromArray(component): void {\n    const index = this.modals.indexOf(component);\n    if (index > -1) {\n      this.viewContainer.remove(index);\n      this.modals.splice(index, 1);\n    }\n  }\n}\n"]}