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fix(ion-backdrop): new ion-backdrop can prevent background scrolling
closes ionic-team#6656
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| @import "../../globals.core"; | ||
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| // Backdrop | ||
| // -------------------------------------------------- | ||
|
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| $backdrop-color: #000 !default; | ||
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| ion-backdrop { | ||
| position: absolute; | ||
| top: 0; | ||
| left: 0; | ||
| z-index: $z-index-backdrop; | ||
| display: block; | ||
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| width: 100%; | ||
| height: 100%; | ||
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| background-color: $backdrop-color; | ||
| opacity: 0.01; | ||
| transform: translateZ(0); | ||
| } | ||
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| ion-backdrop.hide-backdrop { | ||
| display: none; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| import {Directive, ViewEncapsulation, HostListener, ElementRef, Input} from '@angular/core'; | ||
| import {isTrueProperty} from '../../util/util'; | ||
| /** | ||
| * @private | ||
| */ | ||
| @Directive({ | ||
| selector: 'ion-backdrop', | ||
| host: { | ||
| 'role': 'presentation', | ||
| 'tappable': '', | ||
| 'disable-activated': '' | ||
| }, | ||
| }) | ||
| export class Backdrop { | ||
| private static nuBackDrops: number = 0; | ||
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| private static push() { | ||
| if (this.nuBackDrops == 0) { | ||
| console.debug("adding .stop-scrolling to body"); | ||
| document.body.classList.add("stop-scroll"); | ||
| } else { | ||
| console.warn("several backdrops on screen? probably a bug"); | ||
| } | ||
| this.nuBackDrops++; | ||
| } | ||
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| private static pop() { | ||
| if (this.nuBackDrops == 0) { | ||
| console.error("pop requires a push"); | ||
| return; | ||
| } | ||
| this.nuBackDrops--; | ||
| if (this.nuBackDrops == 0) { | ||
| console.debug("removing .stop-scrolling from body"); | ||
| document.body.classList.remove("stop-scroll") | ||
| } | ||
| } | ||
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| private pushed: boolean = false; | ||
| @Input() preventScroll: boolean = true; | ||
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| constructor(public elementRef: ElementRef) {} | ||
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| ngOnInit() { | ||
| if(isTrueProperty(this.preventScroll)) { | ||
| Backdrop.push(); | ||
| this.pushed = true; | ||
| } | ||
| } | ||
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| ngOnDestroy() { | ||
| if(this.pushed) { | ||
| Backdrop.pop(); | ||
| this.pushed = false; | ||
| } | ||
| } | ||
|
|
||
| } |
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