ngx-bootstrap
Version:
Angular Bootstrap
303 lines • 11.1 kB
JavaScript
import { Directive, ElementRef, EventEmitter, Input, Output, Renderer2, ViewContainerRef } from '@angular/core';
import { filter } from 'rxjs/operators';
import { ComponentLoaderFactory } from 'ngx-bootstrap/component-loader';
import { BsDropdownConfig } from './bs-dropdown.config';
import { BsDropdownContainerComponent } from './bs-dropdown-container.component';
import { BsDropdownState } from './bs-dropdown.state';
import { isBs3 } from 'ngx-bootstrap/utils';
import { AnimationBuilder } from '@angular/animations';
import { dropdownAnimation } from './dropdown-animations';
export class BsDropdownDirective {
constructor(_elementRef, _renderer, _viewContainerRef, _cis, _state, _config, _builder) {
this._elementRef = _elementRef;
this._renderer = _renderer;
this._viewContainerRef = _viewContainerRef;
this._cis = _cis;
this._state = _state;
this._config = _config;
/**
* This attribute indicates that the dropdown should be opened upwards
*/
this.dropup = false;
// todo: move to component loader
this._isInlineOpen = false;
this._isDisabled = false;
this._subscriptions = [];
this._isInited = false;
// set initial dropdown state from config
this._state.autoClose = this._config.autoClose;
this._state.insideClick = this._config.insideClick;
this._state.isAnimated = this._config.isAnimated;
this._factoryDropDownAnimation = _builder.build(dropdownAnimation);
// create dropdown component loader
this._dropdown = this._cis
.createLoader(this._elementRef, this._viewContainerRef, this._renderer)
.provide({ provide: BsDropdownState, useValue: this._state });
this.onShown = this._dropdown.onShown;
this.onHidden = this._dropdown.onHidden;
this.isOpenChange = this._state.isOpenChange;
}
/**
* Indicates that dropdown will be closed on item or document click,
* and after pressing ESC
*/
set autoClose(value) {
this._state.autoClose = value;
}
get autoClose() {
return this._state.autoClose;
}
/**
* Indicates that dropdown will be animated
*/
set isAnimated(value) {
this._state.isAnimated = value;
}
get isAnimated() {
return this._state.isAnimated;
}
/**
* This attribute indicates that the dropdown shouldn't close on inside click when autoClose is set to true
*/
set insideClick(value) {
this._state.insideClick = value;
}
get insideClick() {
return this._state.insideClick;
}
/**
* Disables dropdown toggle and hides dropdown menu if opened
*/
set isDisabled(value) {
this._isDisabled = value;
this._state.isDisabledChange.emit(value);
if (value) {
this.hide();
}
}
get isDisabled() {
return this._isDisabled;
}
/**
* Returns whether or not the popover is currently being shown
*/
get isOpen() {
if (this._showInline) {
return this._isInlineOpen;
}
return this._dropdown.isShown;
}
set isOpen(value) {
if (value) {
this.show();
}
else {
this.hide();
}
}
get isBs4() {
return !isBs3();
}
get _showInline() {
return !this.container;
}
ngOnInit() {
// fix: seems there are an issue with `routerLinkActive`
// which result in duplicated call ngOnInit without call to ngOnDestroy
// read more: https://github.com/valor-software/ngx-bootstrap/issues/1885
if (this._isInited) {
return;
}
this._isInited = true;
// attach DOM listeners
this._dropdown.listen({
// because of dropdown inline mode
outsideClick: false,
triggers: this.triggers,
show: () => this.show()
});
// toggle visibility on toggle element click
this._subscriptions.push(this._state.toggleClick.subscribe((value) => this.toggle(value)));
// hide dropdown if set disabled while opened
this._subscriptions.push(this._state.isDisabledChange
.pipe(filter((value) => value))
.subscribe(( /*value: boolean*/) => this.hide()));
}
/**
* Opens an element’s popover. This is considered a “manual” triggering of
* the popover.
*/
show() {
if (this.isOpen || this.isDisabled) {
return;
}
if (this._showInline) {
if (!this._inlinedMenu) {
this._state.dropdownMenu.then((dropdownMenu) => {
this._dropdown.attachInline(dropdownMenu.viewContainer, dropdownMenu.templateRef);
this._inlinedMenu = this._dropdown._inlineViewRef;
this.addBs4Polyfills();
if (this._inlinedMenu) {
this._renderer.addClass(this._inlinedMenu.rootNodes[0].parentNode, 'open');
}
this.playAnimation();
})
// swallow errors
.catch();
}
this.addBs4Polyfills();
this._isInlineOpen = true;
this.onShown.emit(true);
this._state.isOpenChange.emit(true);
this.playAnimation();
return;
}
this._state.dropdownMenu.then(dropdownMenu => {
// check direction in which dropdown should be opened
const _dropup = this.dropup ||
(typeof this.dropup !== 'undefined' && this.dropup);
this._state.direction = _dropup ? 'up' : 'down';
const _placement = this.placement || (_dropup ? 'top start' : 'bottom start');
// show dropdown
this._dropdown
.attach(BsDropdownContainerComponent)
.to(this.container)
.position({ attachment: _placement })
.show({
content: dropdownMenu.templateRef,
placement: _placement
});
this._state.isOpenChange.emit(true);
})
// swallow error
.catch();
}
/**
* Closes an element’s popover. This is considered a “manual” triggering of
* the popover.
*/
hide() {
if (!this.isOpen) {
return;
}
if (this._showInline) {
this.removeShowClass();
this.removeDropupStyles();
this._isInlineOpen = false;
this.onHidden.emit(true);
}
else {
this._dropdown.hide();
}
this._state.isOpenChange.emit(false);
}
/**
* Toggles an element’s popover. This is considered a “manual” triggering of
* the popover. With parameter <code>true</code> allows toggling, with parameter <code>false</code>
* only hides opened dropdown. Parameter usage will be removed in ngx-bootstrap v3
*/
toggle(value) {
if (this.isOpen || !value) {
return this.hide();
}
return this.show();
}
/** @internal */
_contains(event) {
// todo: valorkin fix typings
return this._elementRef.nativeElement.contains(event.target) ||
(this._dropdown.instance && this._dropdown.instance._contains(event.target));
}
ngOnDestroy() {
// clean up subscriptions and destroy dropdown
for (const sub of this._subscriptions) {
sub.unsubscribe();
}
this._dropdown.dispose();
}
addBs4Polyfills() {
if (!isBs3()) {
this.addShowClass();
this.checkRightAlignment();
this.addDropupStyles();
}
}
playAnimation() {
if (this._state.isAnimated && this._inlinedMenu) {
setTimeout(() => {
if (this._inlinedMenu) {
this._factoryDropDownAnimation.create(this._inlinedMenu.rootNodes[0]).play();
}
});
}
}
addShowClass() {
if (this._inlinedMenu && this._inlinedMenu.rootNodes[0]) {
this._renderer.addClass(this._inlinedMenu.rootNodes[0], 'show');
}
}
removeShowClass() {
if (this._inlinedMenu && this._inlinedMenu.rootNodes[0]) {
this._renderer.removeClass(this._inlinedMenu.rootNodes[0], 'show');
}
}
checkRightAlignment() {
if (this._inlinedMenu && this._inlinedMenu.rootNodes[0]) {
const isRightAligned = this._inlinedMenu.rootNodes[0].classList.contains('dropdown-menu-right');
this._renderer.setStyle(this._inlinedMenu.rootNodes[0], 'left', isRightAligned ? 'auto' : '0');
this._renderer.setStyle(this._inlinedMenu.rootNodes[0], 'right', isRightAligned ? '0' : 'auto');
}
}
addDropupStyles() {
if (this._inlinedMenu && this._inlinedMenu.rootNodes[0]) {
// a little hack to not break support of bootstrap 4 beta
this._renderer.setStyle(this._inlinedMenu.rootNodes[0], 'top', this.dropup ? 'auto' : '100%');
this._renderer.setStyle(this._inlinedMenu.rootNodes[0], 'transform', this.dropup ? 'translateY(-101%)' : 'translateY(0)');
this._renderer.setStyle(this._inlinedMenu.rootNodes[0], 'bottom', 'auto');
}
}
removeDropupStyles() {
if (this._inlinedMenu && this._inlinedMenu.rootNodes[0]) {
this._renderer.removeStyle(this._inlinedMenu.rootNodes[0], 'top');
this._renderer.removeStyle(this._inlinedMenu.rootNodes[0], 'transform');
this._renderer.removeStyle(this._inlinedMenu.rootNodes[0], 'bottom');
}
}
}
BsDropdownDirective.decorators = [
{ type: Directive, args: [{
selector: '[bsDropdown], [dropdown]',
exportAs: 'bs-dropdown',
providers: [BsDropdownState],
// eslint-disable-next-line @angular-eslint/no-host-metadata-property
host: {
'[class.dropup]': 'dropup',
'[class.open]': 'isOpen',
'[class.show]': 'isOpen && isBs4'
}
},] }
];
BsDropdownDirective.ctorParameters = () => [
{ type: ElementRef },
{ type: Renderer2 },
{ type: ViewContainerRef },
{ type: ComponentLoaderFactory },
{ type: BsDropdownState },
{ type: BsDropdownConfig },
{ type: AnimationBuilder }
];
BsDropdownDirective.propDecorators = {
placement: [{ type: Input }],
triggers: [{ type: Input }],
container: [{ type: Input }],
dropup: [{ type: Input }],
autoClose: [{ type: Input }],
isAnimated: [{ type: Input }],
insideClick: [{ type: Input }],
isDisabled: [{ type: Input }],
isOpen: [{ type: Input }],
isOpenChange: [{ type: Output }],
onShown: [{ type: Output }],
onHidden: [{ type: Output }]
};
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