Merge branch 'master' into nathan-starter

1 files changed, 15 insertions, 1 deletions

diff --git a/src/fields/util.ts b/src/fields/util.ts
index c2ec3f13a..ad592391e 100644
--- a/src/fields/util.ts
+++ b/src/fields/util.ts
@@ -1,4 +1,4 @@
-import { $mobx, action, observable, runInAction, trace } from 'mobx';
+import { $mobx, action, observable, runInAction, trace, values } from 'mobx';
 import { computedFn } from 'mobx-utils';
 import { returnZero } from '../Utils';
 import { DocServer } from '../client/DocServer';
@@ -16,6 +16,7 @@ import { RichTextField } from './RichTextField';
 import { SchemaHeaderField } from './SchemaHeaderField';
 import { ComputedField } from './ScriptField';
 import { DocCast, ScriptCast, StrCast } from './Types';
+import { BaseException } from 'pdfjs-dist/types/src/shared/util';
 
 function _readOnlySetter(): never {
     throw new Error("Documents can't be modified in read-only mode");
@@ -56,6 +57,8 @@ const _setterImpl = action(function (target: any, prop: string | symbol | number
         delete curValue[FieldChanged];
     }
 
+    if (typeof prop === 'string' && _propSetterCB.has(prop)) _propSetterCB.get(prop)!(target[SelfProxy], value);
+
     const effectiveAcl = GetEffectiveAcl(target);
 
     const writeMode = DocServer.getFieldWriteMode(prop as string);
@@ -282,6 +285,17 @@ export function distributeAcls(key: string, acl: SharingPermissions, target: Doc
     dataDocChanged && updateCachedAcls(dataDoc);
 }
 
+export var _propSetterCB = new Map<string, ((target: any, value: any) => void) | undefined>();
+/**
+ * sets a callback function to be called whenever a value is assigned to the specified field key.
+ * For example, this is used to "publish" documents with titles that start with '@'
+ * @param prop
+ * @param setter
+ */
+export function SetPropSetterCb(prop: string, setter: ((target: any, value: any) => void) | undefined) {
+    _propSetterCB.set(prop, setter);
+}
+
 //
 // target should be either a Doc or ListImpl.  receiver should be a Proxy<Doc> Or List.
 //