data: contribution: context

3 files changed, 55 insertions, 1 deletions

diff --git a/src/data/composite/things/contribution/index.js b/src/data/composite/things/contribution/index.js
index c0506a2b..b06e8677 100644
--- a/src/data/composite/things/contribution/index.js
+++ b/src/data/composite/things/contribution/index.js
@@ -1 +1,2 @@
 export {default as withContributionArtist} from './withContributionArtist.js';
+export {default as withContributionContext} from './withContributionContext.js';
diff --git a/src/data/composite/things/contribution/withContributionContext.js b/src/data/composite/things/contribution/withContributionContext.js
new file mode 100644
index 00000000..83ad5b73
--- /dev/null
+++ b/src/data/composite/things/contribution/withContributionContext.js
@@ -0,0 +1,29 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {withPropertiesFromObject} from '#composite/data';
+
+export default templateCompositeFrom({
+  annotation: `withContributionContext`,
+
+  outputs: [
+    '#contributionTarget',
+    '#contributionProperty',
+  ],
+
+  steps: () => [
+    {
+      dependencies: ['thing', 'thingProperty'],
+
+      compute: (continuation, {
+        ['thing']: thing,
+        ['thingProperty']: thingProperty,
+      }) => continuation({
+        ['#contributionTarget']:
+          thing.constructor[Symbol.for('Thing.referenceType')],
+
+        ['#contributionProperty']:
+          thingProperty,
+      }),
+    },
+  ],
+});
diff --git a/src/data/things/contribution.js b/src/data/things/contribution.js
index 7eb8cfc7..e6479a1e 100644
--- a/src/data/things/contribution.js
+++ b/src/data/things/contribution.js
@@ -10,7 +10,10 @@ import {isStringNonEmpty, isThing, validateReference} from '#validators';
 import {exposeDependency} from '#composite/control-flow';
 import {withResolvedReference} from '#composite/wiki-data';
 
-import {withContributionArtist} from '#composite/things/contribution';
+import {
+  withContributionArtist,
+  withContributionContext,
+} from '#composite/things/contribution';
 
 export class Contribution extends Thing {
   static [Thing.getPropertyDescriptors] = () => ({
@@ -42,6 +45,27 @@ export class Contribution extends Thing {
       flags: {update: true, expose: true},
       update: {validate: isStringNonEmpty},
     },
+
+    // Expose only
+
+    context: [
+      withContributionContext(),
+
+      {
+        dependencies: [
+          '#contributionTarget',
+          '#contributionProperty',
+        ],
+
+        compute: ({
+          ['#contributionTarget']: target,
+          ['#contributionProperty']: property,
+        }) => ({
+          target,
+          property,
+        }),
+      },
+    ],
   });
 
   [inspect.custom](depth, options, inspect) {