diff options
Diffstat (limited to 'src/client/util/DragManager.ts')
| -rw-r--r-- | src/client/util/DragManager.ts | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts index bb9a3b793..0dcaa9c77 100644 --- a/src/client/util/DragManager.ts +++ b/src/client/util/DragManager.ts @@ -123,17 +123,21 @@ export namespace DragManager { // So we replace the pdf's canvas with the image thumbnail const docView: DocumentView = dragData["documentView"]; const doc: Document = docView ? docView.props.Document : dragData["document"]; - var pdfBox = dragElement.getElementsByClassName("pdfBox-cont")[0] as HTMLElement; - let thumbnail = doc.GetT(KeyStore.Thumbnail, ImageField); - if (pdfBox && pdfBox.childElementCount && thumbnail) { - let img = new Image(); - img!.src = thumbnail.toString(); - img!.style.position = "absolute"; - img!.style.width = `${rect.width / scaleX}px`; - img!.style.height = `${rect.height / scaleY}px`; - pdfBox.replaceChild(img!, pdfBox.children[0]) + + if (doc) { + var pdfBox = dragElement.getElementsByClassName("pdfBox-cont")[0] as HTMLElement; + let thumbnail = doc.GetT(KeyStore.Thumbnail, ImageField); + if (pdfBox && pdfBox.childElementCount && thumbnail) { + let img = new Image(); + img!.src = thumbnail.toString(); + img!.style.position = "absolute"; + img!.style.width = `${rect.width / scaleX}px`; + img!.style.height = `${rect.height / scaleY}px`; + pdfBox.replaceChild(img!, pdfBox.children[0]) + } } + dragDiv.appendChild(dragElement); let hideSource = false; |