Fix resolving uris in file tile

ui/js/component/fileTile/view.jsx

@@ -19,11 +19,15 @@ class FileTile extends React.Component {
   }
 
   componentDidMount() {
-    const { isResolvingUri, resolveUri, claim, uri } = this.props;
+    this.resolve(this.props);
+  }
 
-    if (!isResolvingUri && !claim && uri) {
-      resolveUri(uri);
-    }
+  componentWillReceiveProps(nextProps) {
+    this.resolve(nextProps);
+  }
+
+  resolve({ isResolvingUri, claim, uri, resolveUri }) {
+    if (!isResolvingUri && claim === undefined && uri) resolveUri(uri);
   }
 
   handleMouseOver() {

ui/js/reducers/claims.js

@@ -13,6 +13,8 @@ reducers[types.RESOLVE_URI_COMPLETED] = function(state, action) {
   if (claim) {
     byId[claim.claim_id] = claim;
     byUri[uri] = claim.claim_id;
+  } else {
+    byUri[uri] = null;
   }
 
   return Object.assign({}, state, {

ui/js/selectors/claims.js

@@ -17,9 +17,17 @@ export const selectClaimsByUri = createSelector(
 
     Object.keys(byUri).forEach(uri => {
       const claimId = byUri[uri];
-      const claim = byId[claimId];
 
-      claims[uri] = claim;
+      // NOTE returning a null claim allows us to differentiate between an
+      // undefined (never fetched claim) and one which just doesn't exist. Not
+      // the cleanest solution but couldn't think of anything better right now
+      if (claimId === null) {
+        claims[uri] = null;
+      } else {
+        const claim = byId[claimId];
+
+        claims[uri] = claim;
+      }
     })
 
     return claims;