diff options
| -rw-r--r-- | src/client/documents/Documents.ts | 1 | ||||
| -rw-r--r-- | src/client/util/LinkManager.ts | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/client/documents/Documents.ts b/src/client/documents/Documents.ts index 9517cbbda..9cb41aecc 100644 --- a/src/client/documents/Documents.ts +++ b/src/client/documents/Documents.ts @@ -86,6 +86,7 @@ const delegateKeys = ["x", "y", "width", "height", "panX", "panY"]; export namespace DocUtils { export function MakeLink(source: Doc, target: Doc) { + if (LinkManager.Instance.doesLinkExist(source, target)) return; // let protoSrc = source.proto ? source.proto : source; // let protoTarg = target.proto ? target.proto : target; UndoManager.RunInBatch(() => { diff --git a/src/client/util/LinkManager.ts b/src/client/util/LinkManager.ts index 2f40c77e7..929fcbf21 100644 --- a/src/client/util/LinkManager.ts +++ b/src/client/util/LinkManager.ts @@ -10,6 +10,7 @@ import { Doc } from "../../new_fields/Doc"; import { listSpec } from "../../new_fields/Schema"; import { List } from "../../new_fields/List"; import { string } from "prop-types"; +import { Docs } from "../documents/Documents"; export namespace LinkUtils { export function findOppositeAnchor(link: Doc, anchor: Doc): Doc { @@ -179,4 +180,13 @@ export class LinkManager { } } + public doesLinkExist(anchor1: Doc, anchor2: Doc) { + let allLinks = LinkManager.Instance.allLinks; + let index = allLinks.findIndex(linkDoc => { + return (Doc.AreProtosEqual(Cast(linkDoc.anchor1, Doc, new Doc), anchor1) && Doc.AreProtosEqual(Cast(linkDoc.anchor2, Doc, new Doc), anchor2)) || + (Doc.AreProtosEqual(Cast(linkDoc.anchor1, Doc, new Doc), anchor2) && Doc.AreProtosEqual(Cast(linkDoc.anchor2, Doc, new Doc), anchor1)); + }); + return index !== -1; + } + }
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