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fix(content): unsubscribe from viewCtrl observables after content ins… (#10050)

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* fix(content): unsubscribe from observables on destroy

* fix(content): scroll is initialized before subscribing

fixes #9593
fixes #10045

* fix(content): unset viewCtrl subscribers on destroy
This commit is contained in:
Chris Morbitzer
2017-01-18 07:57:12 -06:00
committed by Manu Mtz.-Almeida
parent fba159662e
commit 3a718de463
1 changed files with 14 additions and 12 deletions
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26
src/components/content/content.ts
View File

@ -167,6 +167,10 @@ export class Content extends Ion implements OnDestroy, OnInit {
_fixedEle: HTMLElement;
/** @internal */
_imgs: Img[] = [];
/** @internal */
_viewCtrlReadSub: any;
/** @internal */
_viewCtrlWriteSub: any;
private _imgReqBfr: number;
private _imgRndBfr: number;
@ -328,33 +332,28 @@ export class Content extends Ion implements OnDestroy, OnInit {
this._imgReqBfr = config.getNumber('imgRequestBuffer', 1400);
this._imgRndBfr = config.getNumber('imgRenderBuffer', 400);
this._imgVelMax = config.getNumber('imgVelocityMax', 3);
this._scroll = new ScrollView(_plt, _dom);
if (viewCtrl) {
// content has a view controller
viewCtrl._setIONContent(this);
viewCtrl._setIONContentRef(elementRef);
var readSub = viewCtrl.readReady.subscribe(() => {
readSub.unsubscribe();
this._viewCtrlReadSub = viewCtrl.readReady.subscribe(() => {
this._viewCtrlReadSub.unsubscribe();
this._readDimensions();
});
var writeSub = viewCtrl.writeReady.subscribe(() => {
writeSub.unsubscribe();
this._viewCtrlWriteSub = viewCtrl.writeReady.subscribe(() => {
this._viewCtrlWriteSub.unsubscribe();
this._writeDimensions();
});
} else {
// content does not have a view controller
_dom.read(() => {
this._readDimensions();
});
_dom.write(() => {
this._writeDimensions();
});
_dom.read(this._readDimensions.bind(this));
_dom.write(this._writeDimensions.bind(this));
}
this._scroll = new ScrollView(_plt, _dom);
}
/**
@ -400,6 +399,9 @@ export class Content extends Ion implements OnDestroy, OnInit {
*/
ngOnDestroy() {
this._scLsn && this._scLsn();
this._viewCtrlReadSub && this._viewCtrlReadSub.unsubscribe();
this._viewCtrlWriteSub && this._viewCtrlWriteSub.unsubscribe();
this._viewCtrlReadSub = this._viewCtrlWriteSub = null;
this._scroll && this._scroll.destroy();
this._scrollEle = this._fixedEle = this._footerEle = this._scLsn = this._scroll = null;
}