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fix(virtual-list): virtualTrackBy reference

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This commit is contained in:
Manuel Mtz-Almeida
2017-05-05 00:24:33 +02:00
parent 299a68bcdc
commit de19dbe81b
1 changed files with 14 additions and 9 deletions
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23
src/components/virtual-scroll/virtual-scroll.ts
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@ -240,7 +240,6 @@ export class VirtualScroll implements DoCheck, AfterContentInit, OnDestroy {
@ContentChild(VirtualHeader) _hdrTmp: VirtualHeader;
@ContentChild(VirtualFooter) _ftrTmp: VirtualFooter;
/**
* @input {array} The data that builds the templates within the virtual scroll.
* This is the same data that you'd pass to `*ngFor`. It's important to note
@ -345,7 +344,8 @@ export class VirtualScroll implements DoCheck, AfterContentInit, OnDestroy {
* and what data to give to the header template. The function must return
* `null` if a header cell shouldn't be created.
*/
@Input() set headerFn(val: Function) {
@Input()
set headerFn(val: Function) {
if (isFunction(val)) {
this._hdrFn = val.bind((this._ctrl._cmp) || this);
}
@ -358,7 +358,8 @@ export class VirtualScroll implements DoCheck, AfterContentInit, OnDestroy {
* should be used, and what data to give to the footer template. The function
* must return `null` if a footer cell shouldn't be created.
*/
@Input() set footerFn(val: Function) {
@Input()
set footerFn(val: Function) {
if (isFunction(val)) {
this._ftrFn = val.bind((this._ctrl._cmp) || this);
}
@ -369,10 +370,14 @@ export class VirtualScroll implements DoCheck, AfterContentInit, OnDestroy {
*/
@Input()
set virtualTrackBy(val: TrackByFn) {
if (!isPresent(val)) return;
this._virtualTrackBy = val;
this._updateDiffer();
};
if (isPresent(val)) {
this._virtualTrackBy = val;
this._updateDiffer();
}
}
get virtualTrackBy(): TrackByFn {
return this._virtualTrackBy;
}
constructor(
@ -485,9 +490,9 @@ export class VirtualScroll implements DoCheck, AfterContentInit, OnDestroy {
return null;
}
private _updateDiffer(): void {
private _updateDiffer() {
if (isBlank(this._differ) && isPresent(this._records)) {
this._differ = this._iterableDiffers.find(this._records).create(this.virtualTrackBy);
this._differ = this._iterableDiffers.find(this._records).create(this._virtualTrackBy);
}
}