1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
import {
Component,
Directive,
Input,
Output,
EventEmitter,
ChangeDetectionStrategy,
OnInit,
OnDestroy,
Injector,
Renderer,
ComponentRef,
ElementRef,
TemplateRef,
ViewContainerRef,
ComponentFactoryResolver,
NgZone, ViewEncapsulation
} from '@angular/core';
import {listenToTriggers} from '../util/triggers';
import {positionElements, getPlacement} from '../util/positioning';
import {PopupService} from '../util/popup';
import {PlxTooltipConfig} from './plx-tooltip-config';
let nextId = 0;
@Component({
selector: 'plx-tooltip-window',
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
host: {'[class]': '"plx-tooltip show plx-tooltip-" + placement', 'role': 'tooltip', '[id]': 'id'},
template: `
<div class="plx-tooltip-inner"><ng-content></ng-content></div>
`,
styleUrls: ['./plx-tooltip.less']
})
export class PlxTooltipWindow {
@Input() public placement: 'top' | 'bottom' | 'left' | 'right' = 'top';
@Input() public id: string;
}
/**
* A lightweight, extensible directive for fancy tooltip creation.
*/
@Directive({selector: '[plxTooltip]', exportAs: 'plxTooltip'})
export class PlxTooltip implements OnInit, OnDestroy {
/**
* Placement of a tooltip. Accepts: "top", "bottom", "left", "right"
*/
@Input() public placement: 'top' | 'bottom' | 'left' | 'right';
/**
* Specifies events that should trigger. Supports a space separated list of event names.
*/
@Input() public triggers: string;
/**
* A selector specifying the element the tooltip should be appended to.
* Currently only supports "body".
*/
@Input() public container: string;
/**
* Emits an event when the tooltip is shown
*/
@Output() public shown = new EventEmitter();
/**
* Emits an event when the tooltip is hidden
*/
@Output() public hidden = new EventEmitter();
private _plxTooltip: string | TemplateRef<any>;
private _plxTooltipWindowId = `plx-tooltip-${nextId++}`;
private _popupService: PopupService<PlxTooltipWindow>;
private _windowRef: ComponentRef<PlxTooltipWindow>;
private _unregisterListenersFn;
private _zoneSubscription: any;
constructor(private _elementRef: ElementRef, private _renderer: Renderer, injector: Injector,
componentFactoryResolver: ComponentFactoryResolver, viewContainerRef: ViewContainerRef, config: PlxTooltipConfig,
ngZone: NgZone) {
this.placement = config.placement;
this.triggers = config.triggers;
this.container = config.container;
this._popupService = new PopupService<PlxTooltipWindow>(
PlxTooltipWindow, injector, viewContainerRef, _renderer, componentFactoryResolver);
this._zoneSubscription = ngZone.onStable.subscribe(() => {
if (this._windowRef) {
positionElements(
this._elementRef.nativeElement, this._windowRef.location.nativeElement, this.placement,
this.container === 'body');
let tmpPlace = getPlacement(this._elementRef.nativeElement, this._windowRef.location.nativeElement, this.placement);
this._windowRef.instance.placement = tmpPlace;
this._windowRef.changeDetectorRef.detectChanges();
}
});
}
/**
* Content to be displayed as tooltip. If falsy, the tooltip won't open.
*/
@Input()
set plxTooltip(value: string | TemplateRef<any>) {
this._plxTooltip = value;
if (!value && this._windowRef) {
this.close();
}
}
get plxTooltip() {
return this._plxTooltip;
}
/**
* Opens an element’s tooltip. This is considered a “manual” triggering of the tooltip.
* The context is an optional value to be injected into the tooltip template when it is created.
*/
public open(context?: any) {
if (!this._windowRef && this._plxTooltip) {
this._windowRef = this._popupService.open(this._plxTooltip, context);
// let tmpPlace = getPlacement(this._elementRef.nativeElement, this._windowRef.location.nativeElement, this.placement);
this._windowRef.instance.placement = this.placement;
this._windowRef.instance.id = this._plxTooltipWindowId;
this._renderer.setElementAttribute(this._elementRef.nativeElement, 'aria-describedby', this._plxTooltipWindowId);
if (this.container === 'body') {
window.document.querySelector(this.container).appendChild(this._windowRef.location.nativeElement);
}
// we need to manually invoke change detection since events registered via
// Renderer::listen() - to be determined if this is a bug in the Angular itself
this._windowRef.changeDetectorRef.markForCheck();
this.shown.emit();
}
}
/**
* Closes an element’s tooltip. This is considered a “manual” triggering of the tooltip.
*/
public close(): void {
if (this._windowRef !== null) {
this._renderer.setElementAttribute(this._elementRef.nativeElement, 'aria-describedby', null);
this._popupService.close();
this._windowRef = null;
this.hidden.emit();
}
}
/**
* Toggles an element’s tooltip. This is considered a “manual” triggering of the tooltip.
*/
public toggle(): void {
if (this._windowRef) {
this.close();
} else {
this.open();
}
}
/**
* Returns whether or not the tooltip is currently being shown
*/
public isOpen(): boolean {
return !!this._windowRef;
}
public ngOnInit() {
this._unregisterListenersFn = listenToTriggers(
this._renderer, this._elementRef.nativeElement, this.triggers, this.open.bind(this), this.close.bind(this),
this.toggle.bind(this));
}
public ngOnDestroy() {
this.close();
this._unregisterListenersFn();
this._zoneSubscription.unsubscribe();
}
}
|
