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ExthostTreeView: Check if children are null or undefined

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This commit is contained in:
Sandeep Somavarapu
2017-05-31 20:29:19 +02:00
parent ab6371af50
commit d23b97b462
1 changed files with 12 additions and 9 deletions
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21
src/vs/workbench/api/node/extHostTreeViews.ts
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@@ -125,15 +125,18 @@ class ExtHostTreeView<T> extends Disposable {
}
private processAndMapElements(elements: T[]): TPromise<ITreeItem[]> {
return TPromise.join(
elements.filter(element => !!element)
.map(element => {
if (this.extChildrenElementsMap.has(element)) {
return TPromise.wrapError<ITreeItem>(localize('treeView.duplicateElement', 'Element {0} is already registered', element));
}
return this.resolveElement(element);
}))
.then(treeItems => treeItems.filter(treeItem => !!treeItem));
if (elements && elements.length) {
return TPromise.join(
elements.filter(element => !!element)
.map(element => {
if (this.extChildrenElementsMap.has(element)) {
return TPromise.wrapError<ITreeItem>(localize('treeView.duplicateElement', 'Element {0} is already registered', element));
}
return this.resolveElement(element);
}))
.then(treeItems => treeItems.filter(treeItem => !!treeItem));
}
return TPromise.as([]);
}
private resolveElement(element: T): TPromise<ITreeItem> {