Hide "private" check box if private changes are disabled

Bug: Issue 9776
Change-Id: Ide3b849a9dbe1c26b7787a514c503f97bce9ef31

polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-change-dialog.html

@@ -55,7 +55,7 @@ limitations under the License.
           padding: 0 .15em;
         }
       }
-      .hideBranch {
+      .hide {
         display: none;
       }
     </style>
@@ -108,7 +108,7 @@ limitations under the License.
             </iron-autogrow-textarea>
           </span>
         </section>
-        <section>
+        <section class$="[[_computePrivateSectionClass(_privateChangesEnabled)]]">
           <label
               class="title"
               for="privateChangeCheckBox">Private change</label>

polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-change-dialog.js

@@ -44,6 +44,7 @@
         notify: true,
         value: false,
       },
+      _privateChangesEnabled: Boolean,
     },
 
     behaviors: [
@@ -52,10 +53,23 @@
     ],
 
     attached() {
-      if (!this.repoName) { return; }
-      this.$.restAPI.getProjectConfig(this.repoName).then(config => {
-        this.privateByDefault = config.private_by_default;
-      });
+      if (!this.repoName) { return Promise.resolve(); }
+
+      const promises = [];
+
+      promises.push(this.$.restAPI.getProjectConfig(this.repoName)
+          .then(config => {
+            this.privateByDefault = config.private_by_default;
+          }));
+
+      promises.push(this.$.restAPI.getConfig().then(config => {
+        if (!config) { return; }
+
+        this._privateConfig = config && config.change &&
+            config.change.disable_private_changes;
+      }));
+
+      return Promise.all(promises);
     },
 
     observers: [
@@ -63,7 +77,7 @@
     ],
 
     _computeBranchClass(baseChange) {
-      return baseChange ? 'hideBranch' : '';
+      return baseChange ? 'hide' : '';
     },
 
     _allowCreate(branch, subject) {
@@ -120,5 +134,9 @@
         return false;
       }
     },
+
+    _computePrivateSectionClass(config) {
+      return config ? 'hide' : '';
+    },
   });
 })();

polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-change-dialog_test.html

@@ -158,5 +158,15 @@ limitations under the License.
         done();
       });
     });
+
+    test('_computeBranchClass', () => {
+      assert.equal(element._computeBranchClass(true), 'hide');
+      assert.equal(element._computeBranchClass(false), '');
+    });
+
+    test('_computePrivateSectionClass', () => {
+      assert.equal(element._computePrivateSectionClass(true), 'hide');
+      assert.equal(element._computePrivateSectionClass(false), '');
+    });
   });
 </script>