Merge "Modify gr-change-requirements to use label chips"
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
index 6ea7cf3..ae2a7d0 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
@@ -98,10 +98,10 @@
         font-family: var(--monospace-font-family);
       }
       .u-green {
-        color: #388E3C;
+        color: var(--vote-text-color-recommended);
       }
       .u-red {
-        color: #D32F2F;
+        color: var(--vote-text-color-disliked);
       }
       .label.u-green:not(.u-monospace),
       .label.u-red:not(.u-monospace) {
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
index ff9e547..b056233 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
@@ -145,7 +145,6 @@
         sandbox.stub(Gerrit, '_arePluginsLoaded').returns(true);
         Gerrit._setPluginsPending([]);
         element = createElement();
-        sandbox.stub(element, '_computeCanDeleteVote').returns(true);
 
         labelChangeStub = sandbox.stub();
         plugin.changeMetadata().onLabelsChanged(labelChangeStub);
@@ -156,8 +155,18 @@
         assert.equal(labelChangeStub.callCount, 1);
         assert.isTrue(labelChangeStub.calledWithExactly(labels));
         assert.equal(labelChangeStub.args[0][0]['CI'].all.length, 2);
-        MockInteractions.tap(Polymer.dom(element.root).querySelector(
-            'gr-account-chip').$.remove);
+        element.set(['change', 'labels'], {
+          CI: {
+            all: [
+              {value: 1, name: 'user 2', _account_id: 1},
+            ],
+            values: {
+              ' 0': 'Don\'t submit as-is',
+              '+1': 'No score',
+              '+2': 'Looks good to me',
+            },
+          },
+        });
         // Wait for fake rest API response.
         flush(() => {
           assert.equal(labelChangeStub.callCount, 2);
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
index cd7ec2b..c326bf8 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
@@ -27,7 +27,6 @@
 <link rel="import" href="../../shared/gr-account-link/gr-account-link.html">
 <link rel="import" href="../../shared/gr-date-formatter/gr-date-formatter.html">
 <link rel="import" href="../../shared/gr-editable-label/gr-editable-label.html">
-<link rel="import" href="../../shared/gr-label/gr-label.html">
 <link rel="import" href="../../shared/gr-limited-text/gr-limited-text.html">
 <link rel="import" href="../../shared/gr-linked-chip/gr-linked-chip.html">
 <link rel="import" href="../../shared/gr-tooltip-content/gr-tooltip-content.html">
@@ -38,7 +37,6 @@
 
 <dom-module id="gr-change-metadata">
   <template>
-    <style include="gr-voting-styles"></style>
     <style include="shared-styles">
       .hideDisplay {
         display: none;
@@ -66,35 +64,6 @@
       gr-editable-label {
         max-width: 9em;
       }
-      .labelValueContainer:not(:first-of-type) {
-        margin-top: .25em;
-      }
-      .labelValueContainer span {
-        align-items: baseline;
-        display: inline-flex;
-      }
-      .labelValueContainer {
-        border-radius: 3px;
-        padding: .1em .3em;
-      }
-      gr-label {
-        margin-right: .3em;
-        padding: .05em .85em;
-        text-align: center;
-        @apply --vote-chip-styles;
-      }
-      .max {
-        background-color: var(--vote-color-approved);
-      }
-      .min {
-        background-color: var(--vote-color-rejected);
-      }
-      .positive {
-        background-color: var(--vote-color-recommended);
-      }
-      .negative {
-        background-color: var(--vote-color-disliked);
-      }
       .webLink {
         display: block;
       }
@@ -133,6 +102,11 @@
         --arrow-color: #ffa62f;
         display: inline-block;
       }
+      .separatedSection {
+        border-top: 1px solid var(--border-color);
+        margin-top: .5em;
+        padding-top: .5em;
+      }
       @media screen and (max-width: 50em), screen and (min-width: 75em) {
         :host {
           display: table;
@@ -308,43 +282,12 @@
           </span>
         </section>
       </template>
-      <template is="dom-repeat"
-          items="[[_computeLabelNames(labels)]]" as="labelName">
-        <section>
-          <span class="title">[[labelName]]</span>
-          <span class="value">
-            <template is="dom-repeat"
-                items="[[_computeLabelValues(labelName, labels.*)]]"
-                as="label">
-              <div class="labelValueContainer">
-                <span>
-                  <gr-label
-                      has-tooltip
-                      title="[[_computeValueTooltip(change, label.value, labelName)]]"
-                      class$="[[label.className]] voteChip">
-                    [[label.value]]
-                  </gr-label>
-                  <gr-account-chip
-                      account="[[label.account]]"
-                      data-account-id$="[[label.account._account_id]]"
-                      label-name="[[labelName]]"
-                      removable="[[_computeCanDeleteVote(label.account, mutable)]]"
-                      transparent-background
-                      on-remove="_onDeleteVote"></gr-account-chip>
-                </span>
-              </div>
-            </template>
-          </span>
-        </section>
-      </template>
-      <template is="dom-if" if="[[_showRequirements]]">
-        <section class="requirementsStatus">
-          <span class="title">Submit Status</span>
-          <span class="value">
-            <gr-change-requirements change="[[change]]"></gr-change-requirements>
-          </span>
-        </section>
-      </template>
+      <div class="separatedSection">
+        <gr-change-requirements
+            change="{{change}}"
+            account="[[account]]"
+            mutable="[[mutable]]"></gr-change-requirements>
+      </div>
       <section id="webLinks" hidden$="[[!_computeWebLinks(commitInfo)]]">
         <span class="title">Links</span>
         <span class="value">
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.js b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.js
index aaada4f..113be67 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.js
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.js
@@ -46,10 +46,14 @@
         type: Object,
         notify: true,
       },
+      account: Object,
       /** @type {?} */
       revision: Object,
       commitInfo: Object,
-      mutable: Boolean,
+      mutable: {
+        type: Boolean,
+        computed: '_computeIsMutable(account)',
+      },
       /**
        * @type {{ note_db_enabled: string }}
        */
@@ -156,60 +160,6 @@
       return Object.keys(labels).sort();
     },
 
-    _computeLabelValues(labelName, _labels) {
-      const result = [];
-      const labels = _labels.base;
-      const labelInfo = labels[labelName];
-      if (!labelInfo) { return result; }
-      if (!labelInfo.values) {
-        if (labelInfo.rejected || labelInfo.approved) {
-          const ok = labelInfo.approved || !labelInfo.rejected;
-          return [{
-            value: ok ? '👍️' : '👎️',
-            className: ok ? 'positive' : 'negative',
-            account: ok ? labelInfo.approved : labelInfo.rejected,
-          }];
-        }
-        return result;
-      }
-      const approvals = labelInfo.all || [];
-      const values = Object.keys(labelInfo.values);
-      for (const label of approvals) {
-        if (label.value && label.value != labels[labelName].default_value) {
-          let labelClassName;
-          let labelValPrefix = '';
-          if (label.value > 0) {
-            labelValPrefix = '+';
-            if (parseInt(label.value, 10) ===
-                parseInt(values[values.length - 1], 10)) {
-              labelClassName = 'max';
-            } else {
-              labelClassName = 'positive';
-            }
-          } else if (label.value < 0) {
-            if (parseInt(label.value, 10) === parseInt(values[0], 10)) {
-              labelClassName = 'min';
-            } else {
-              labelClassName = 'negative';
-            }
-          }
-          result.push({
-            value: labelValPrefix + label.value,
-            className: labelClassName,
-            account: label,
-          });
-        }
-      }
-      return result;
-    },
-
-    _computeValueTooltip(change, score, labelName) {
-      if (!change.labels[labelName] ||
-          !change.labels[labelName].values ||
-          !change.labels[labelName].values[score]) { return ''; }
-      return change.labels[labelName].values[score];
-    },
-
     _handleTopicChanged(e, topic) {
       const lastTopic = this.change.topic;
       if (!topic.length) { topic = null; }
@@ -298,75 +248,6 @@
       return hasRequirements || hasLabels || !!change.work_in_progress;
     },
 
-    /**
-     * A user is able to delete a vote iff the mutable property is true and the
-     * reviewer that left the vote exists in the list of removable_reviewers
-     * received from the backend.
-     *
-     * @param {!Object} reviewer An object describing the reviewer that left the
-     *     vote.
-     * @param {boolean} mutable this.mutable describes whether the
-     *     change-metadata section is modifiable by the current user.
-     */
-    _computeCanDeleteVote(reviewer, mutable) {
-      if (!mutable || !this.change || !this.change.removable_reviewers) {
-        return false;
-      }
-      for (let i = 0; i < this.change.removable_reviewers.length; i++) {
-        if (this.change.removable_reviewers[i]._account_id ===
-            reviewer._account_id) {
-          return true;
-        }
-      }
-      return false;
-    },
-
-    /**
-     * Closure annotation for Polymer.prototype.splice is off.
-     * For now, supressing annotations.
-     *
-     * TODO(beckysiegel) submit Polymer PR
-     *
-     * @suppress {checkTypes} */
-    _onDeleteVote(e) {
-      e.preventDefault();
-      const target = Polymer.dom(e).rootTarget;
-      target.disabled = true;
-      const labelName = target.labelName;
-      const accountID = parseInt(target.getAttribute('data-account-id'), 10);
-      this._xhrPromise =
-          this.$.restAPI.deleteVote(this.change._number, accountID, labelName)
-          .then(response => {
-            target.disabled = false;
-            if (!response.ok) { return response; }
-            const label = this.change.labels[labelName];
-            const labels = label.all || [];
-            let wasChanged = false;
-            for (let i = 0; i < labels.length; i++) {
-              if (labels[i]._account_id === accountID) {
-                for (const key in label) {
-                  if (label.hasOwnProperty(key) &&
-                      label[key]._account_id === accountID) {
-                    // Remove special label field, keeping change label values
-                    // in sync with the backend.
-                    this.change.labels[labelName][key] = null;
-                    wasChanged = true;
-                  }
-                }
-                this.change.labels[labelName].all.splice(i, 1);
-                wasChanged = true;
-                break;
-              }
-            }
-            if (wasChanged) {
-              this.notifyPath('change.labels');
-            }
-          }).catch(err => {
-            target.disabled = false;
-            return;
-          });
-    },
-
     _computeProjectURL(project) {
       return Gerrit.Nav.getUrlForProjectChanges(project);
     },
@@ -458,5 +339,9 @@
         parentIsCurrent ? 'current' : 'notCurrent',
       ].join(' ');
     },
+
+    _computeIsMutable(account) {
+      return !!Object.keys(account).length;
+    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
index 1330451..17c3d70 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
@@ -296,32 +296,6 @@
           element._computeShowUploaderHide(change), 'hideDisplay');
     });
 
-    test('_computeValueTooltip', () => {
-      // Existing label.
-      const change = {labels: {'Foo-bar': {values: {0: 'Baz'}}}};
-      let score = '0';
-      let labelName = 'Foo-bar';
-      let actual = element._computeValueTooltip(change, score, labelName);
-      assert.equal(actual, 'Baz');
-
-      // Non-extsistent label.
-      labelName = 'xyz';
-      actual = element._computeValueTooltip(change, score, labelName);
-      assert.equal(actual, '');
-
-      // Non-extsistent score.
-      score = '2';
-      actual = element._computeValueTooltip(change, score, labelName);
-      assert.equal(actual, '');
-
-      // No values on label.
-      labelName = 'abcd';
-      score = '0';
-      change.labels.abcd = {};
-      actual = element._computeValueTooltip(change, score, labelName);
-      assert.equal(actual, '');
-    });
-
     test('_computeParents', () => {
       const parents = [{commit: '123', subject: 'abc'}];
       assert.isUndefined(element._computeParents(
@@ -403,7 +377,7 @@
       });
 
       test('topic read only hides delete button', () => {
-        element.mutable = false;
+        element.account = {};
         element.change = change;
         flushAsynchronousOperations();
         const button = element.$$('gr-linked-chip').$$('gr-button');
@@ -411,7 +385,7 @@
       });
 
       test('topic not read only does not hide delete button', () => {
-        element.mutable = true;
+        element.account = {test: true};
         change.actions.topic.enabled = true;
         element.change = change;
         flushAsynchronousOperations();
@@ -463,7 +437,7 @@
           note_db_enabled: true,
         };
         flushAsynchronousOperations();
-        element.mutable = false;
+        element.account = {};
         element.change = change;
         flushAsynchronousOperations();
         const button = element.$$('gr-linked-chip').$$('gr-button');
@@ -475,7 +449,7 @@
           note_db_enabled: true,
         };
         flushAsynchronousOperations();
-        element.mutable = true;
+        element.account = {test: true};
         change.actions.hashtags.enabled = true;
         element.change = change;
         flushAsynchronousOperations();
@@ -486,7 +460,6 @@
 
     suite('remove reviewer votes', () => {
       setup(() => {
-        sandbox.stub(element, '_computeValueTooltip').returns('');
         sandbox.stub(element, '_computeTopicReadOnly').returns(true);
         element.change = {
           _number: 42,
@@ -507,44 +480,56 @@
         flushAsynchronousOperations();
       });
 
-      test('_computeCanDeleteVote hides delete button', () => {
-        const button = element.$$('gr-account-chip').$$('gr-button');
-        assert.isTrue(button.hasAttribute('hidden'));
-        element.mutable = true;
-        assert.isTrue(button.hasAttribute('hidden'));
-      });
-
-      test('_computeCanDeleteVote shows delete button', () => {
-        element.change.removable_reviewers = [
-          {
-            _account_id: 1,
-            name: 'bojack',
-          },
-        ];
-        element.mutable = true;
-        const button = element.$$('gr-account-chip').$$('gr-button');
-        assert.isFalse(button.hasAttribute('hidden'));
-      });
-
-      test('deletes votes', () => {
-        const deleteResponse = Promise.resolve({ok: true});
-        const deleteStub = sandbox.stub(
-            element.$.restAPI, 'deleteVote').returns(deleteResponse);
-
-        element.change.removable_reviewers = [{
+      suite('assignee field', () => {
+        const dummyAccount = {
           _account_id: 1,
           name: 'bojack',
-        }];
-        element.change.labels.test.recommended = {_account_id: 1};
-        element.mutable = true;
-        const chip = element.$$('gr-account-chip');
-        const button = chip.$$('gr-button');
-        MockInteractions.tap(button);
-        assert.isTrue(chip.disabled);
-        return deleteResponse.then(() => {
-          assert.isFalse(chip.disabled);
-          assert.notOk(element.change.labels.test.recommended);
-          assert.isTrue(deleteStub.calledWithExactly(42, 1, 'test'));
+        };
+        const change = {
+          actions: {
+            assignee: {enabled: false},
+          },
+          assignee: dummyAccount,
+        };
+        let deleteStub;
+        let setStub;
+
+        setup(() => {
+          deleteStub = sandbox.stub(element.$.restAPI, 'deleteAssignee');
+          setStub = sandbox.stub(element.$.restAPI, 'setAssignee');
+        });
+
+        test('changing change recomputes _assignee', () => {
+          assert.isFalse(!!element._assignee.length);
+          const change = element.change;
+          change.assignee = dummyAccount;
+          element._changeChanged(change);
+          assert.deepEqual(element._assignee[0], dummyAccount);
+        });
+
+        test('modifying _assignee calls API', () => {
+          assert.isFalse(!!element._assignee.length);
+          element.set('_assignee', [dummyAccount]);
+          assert.isTrue(setStub.calledOnce);
+          assert.deepEqual(element.change.assignee, dummyAccount);
+          element.set('_assignee', [dummyAccount]);
+          assert.isTrue(setStub.calledOnce);
+          element.set('_assignee', []);
+          assert.isTrue(deleteStub.calledOnce);
+          assert.equal(element.change.assignee, undefined);
+          element.set('_assignee', []);
+          assert.isTrue(deleteStub.calledOnce);
+        });
+
+        test('_computeAssigneeReadOnly', () => {
+          let mutable = false;
+          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
+          mutable = true;
+          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
+          change.actions.assignee.enabled = true;
+          assert.isFalse(element._computeAssigneeReadOnly(mutable, change));
+          mutable = false;
+          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
         });
       });
 
@@ -600,59 +585,6 @@
               assert.equal(element.change.hashtags, newHashtag);
             });
       });
-
-      suite('assignee field', () => {
-        const dummyAccount = {
-          _account_id: 1,
-          name: 'bojack',
-        };
-        const change = {
-          actions: {
-            assignee: {enabled: false},
-          },
-          assignee: dummyAccount,
-        };
-        let deleteStub;
-        let setStub;
-
-        setup(() => {
-          deleteStub = sandbox.stub(element.$.restAPI, 'deleteAssignee');
-          setStub = sandbox.stub(element.$.restAPI, 'setAssignee');
-        });
-
-        test('changing change recomputes _assignee', () => {
-          assert.isFalse(!!element._assignee.length);
-          const change = element.change;
-          change.assignee = dummyAccount;
-          element._changeChanged(change);
-          assert.deepEqual(element._assignee[0], dummyAccount);
-        });
-
-        test('modifying _assignee calls API', () => {
-          assert.isFalse(!!element._assignee.length);
-          element.set('_assignee', [dummyAccount]);
-          assert.isTrue(setStub.calledOnce);
-          assert.deepEqual(element.change.assignee, dummyAccount);
-          element.set('_assignee', [dummyAccount]);
-          assert.isTrue(setStub.calledOnce);
-          element.set('_assignee', []);
-          assert.isTrue(deleteStub.calledOnce);
-          assert.equal(element.change.assignee, undefined);
-          element.set('_assignee', []);
-          assert.isTrue(deleteStub.calledOnce);
-        });
-
-        test('_computeAssigneeReadOnly', () => {
-          let mutable = false;
-          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
-          mutable = true;
-          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
-          change.actions.assignee.enabled = true;
-          assert.isFalse(element._computeAssigneeReadOnly(mutable, change));
-          mutable = false;
-          assert.isTrue(element._computeAssigneeReadOnly(mutable, change));
-        });
-      });
     });
 
     suite('plugin endpoints', () => {
@@ -678,105 +610,5 @@
         });
       });
     });
-
-    suite('label colors', () => {
-      test('valueless label rejected', () => {
-        element.change = {
-          labels: {
-            'Do-Not-Submit': {
-              rejected: {name: 'someone'},
-            },
-          },
-        };
-        flushAsynchronousOperations();
-        const labels = Polymer.dom(element.root).querySelectorAll('gr-label');
-        assert.isTrue(labels[0].classList.contains('negative'));
-      });
-
-      test('valueless label approved', () => {
-        element.change = {
-          labels: {
-            'To-The-Infinity': {
-              approved: {name: 'someone'},
-            },
-          },
-        };
-        flushAsynchronousOperations();
-        const labels = Polymer.dom(element.root).querySelectorAll('gr-label');
-        assert.isTrue(labels[0].classList.contains('positive'));
-      });
-
-      test('-2 to +2', () => {
-        element.change = {
-          labels: {
-            'Code-Review': {
-              all: [
-                {value: 2, name: 'user 2'},
-                {value: 1, name: 'user 1'},
-                {value: -1, name: 'user 3'},
-                {value: -2, name: 'user 4'},
-              ],
-              values: {
-                '-2': 'Awful',
-                '-1': 'Don\'t submit as-is',
-                ' 0': 'No score',
-                '+1': 'Looks good to me',
-                '+2': 'Ready to submit',
-              },
-            },
-          },
-        };
-        flushAsynchronousOperations();
-        const labels = Polymer.dom(element.root).querySelectorAll('gr-label');
-        assert.isTrue(labels[0].classList.contains('max'));
-        assert.isTrue(labels[1].classList.contains('positive'));
-        assert.isTrue(labels[2].classList.contains('negative'));
-        assert.isTrue(labels[3].classList.contains('min'));
-      });
-
-      test('-1 to +1', () => {
-        element.change = {
-          labels: {
-            CI: {
-              all: [
-                {value: 1, name: 'user 1'},
-                {value: -1, name: 'user 2'},
-              ],
-              values: {
-                '-1': 'Don\'t submit as-is',
-                ' 0': 'No score',
-                '+1': 'Looks good to me',
-              },
-            },
-          },
-        };
-        flushAsynchronousOperations();
-        const labels = Polymer.dom(element.root).querySelectorAll('gr-label');
-        assert.isTrue(labels[0].classList.contains('max'));
-        assert.isTrue(labels[1].classList.contains('min'));
-      });
-
-      test('0 to +2', () => {
-        element.change = {
-          labels: {
-            CI: {
-              all: [
-                {value: 1, name: 'user 2'},
-                {value: 2, name: 'user '},
-              ],
-              values: {
-                ' 0': 'Don\'t submit as-is',
-                '+1': 'No score',
-                '+2': 'Looks good to me',
-              },
-            },
-          },
-        };
-        flushAsynchronousOperations();
-        const labels = Polymer.dom(element.root).querySelectorAll('gr-label');
-        assert.isTrue(labels[0].classList.contains('positive'));
-        assert.isTrue(labels[1].classList.contains('max'));
-      });
-    });
   });
 </script>
diff --git a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.html b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.html
index 439677a..b49fa77 100644
--- a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.html
+++ b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.html
@@ -18,60 +18,142 @@
 <link rel="import" href="../../../bower_components/polymer/polymer.html">
 <link rel="import" href="../../../behaviors/rest-client-behavior/rest-client-behavior.html">
 <link rel="import" href="../../../styles/shared-styles.html">
+<link rel="import" href="../../shared/gr-hovercard/gr-hovercard.html">
 <link rel="import" href="../../shared/gr-icons/gr-icons.html">
+<link rel="import" href="../../shared/gr-label/gr-label.html">
+<link rel="import" href="../../shared/gr-label-info/gr-label-info.html">
 
 <dom-module id="gr-change-requirements">
   <template strip-whitespace>
     <style include="shared-styles">
       .status {
         display: inline-block;
-        font-weight: initial;
+        font-family: var(--monospace-font-family);
         text-align: center;
       }
-      .unsatisfied .icon {
+      .neutral .status {
         color: #FFA62F;
       }
-      .satisfied .icon {
-        color: #388E3C;
+      .positive .status {
+        color: var(--vote-text-color-recommended);
+      }
+      .negative .status {
+        color: var(--vote-text-color-disliked);
+      }
+      iron-icon {
+        color: inherit;
       }
       .requirement {
-        padding: .1em 0;
+        align-items: center;
+        background-color: var(--table-header-background-color);
+        border: 1px solid var(--border-color);
+        border-radius: 1em;
+        display: flex;
+        font-weight: bold;
+        height: 2rem;
+        justify-content: space-between;
+        margin: .25em;
+        min-width: 3em;
+        padding: .2em .65em
       }
-      .requirementContainer:not(:first-of-type) {
-        margin-top: .25em;
+      .status {
+        margin-left: .3em;
       }
-      .labelName, .changeIsWip {
+      .title {
         font-weight: bold;
       }
+      .required,
+      .optional {
+        display: block;
+      }
+      .optional {
+        margin-top: .5em;
+      }
+      .fieldContainer {
+        display: flex;
+        flex-wrap: wrap;
+        margin-top: .25em;
+        max-width: 25em;
+      }
+      .hidden {
+        display: none;
+      }
     </style>
-    <template is="dom-if" if="[[_showWip]]">
-      <div class="requirement unsatisfied changeIsWip">
-        <span class="status"><iron-icon class="icon" icon="gr-icons:hourglass"></iron-icon></span>
-        Work in Progress
+    <div class="required">
+      <span class="title">Required for submission</span>
+      <div class="fieldContainer">
+        <template
+            is="dom-repeat"
+            items="[[_requiredLabels]]">
+          <gr-label
+              tabindex="0"
+              id$="[[item.label]]"
+              class$="requirement [[item.style]]">
+            <span class="labelName">[[_computeLabelShortcut(item.label)]]</span>
+            <span class="status">
+              <template is="dom-if" if="[[item.icon]]">
+                <iron-icon class="icon" icon="[[item.icon]]"></iron-icon>
+              </template>
+              <template is="dom-if" if="[[!item.icon]]">
+                <span>[[_computeLabelValue(item.labelInfo.value)]]</span>
+              </template>
+            </span>
+          </gr-label>
+          <gr-hovercard position="top" for="[[item.label]]">
+            <gr-label-info
+                change="{{change}}"
+                account="[[account]]"
+                mutable="[[mutable]]"
+                label="[[item.label]]"
+                label-info="[[item.labelInfo]]"></gr-label-info>
+          </gr-hovercard>
+        </template>
+        <template
+            is="dom-repeat"
+            items="[[_requirements]]">
+          <gr-label
+              tabindex="0"
+              class$="requirement [[_computeRequirementClass(item.satisfied)]]"
+              has-tooltip$="[[item.tooltip]]" title$="[[item.tooltip]]">
+            [[item.fallback_text]]
+            <span class="status">
+              <iron-icon class="icon" icon="[[_computeRequirementIcon(item.satisfied)]]"></iron-icon>
+            </span>
+          </gr-label>
+        </template>
       </div>
-    </template>
-    <template is="dom-if" if="[[_showLabels]]">
-      <template
-          is="dom-repeat"
-          items="[[labels]]">
-        <div class$="requirement [[item.style]]">
-          <span class="status">
-            <iron-icon class="icon" icon="[[item.icon]]"></iron-icon>
-          </span>
-          Label <span class="labelName">[[item.label]]</span>
-        </div>
-      </template>
-    </template>
-    <template
-        is="dom-repeat"
-        items="[[requirements]]">
-      <div class$="requirement [[_computeRequirementClass(item.satisfied)]]">
-        <span class="status">
-          <iron-icon class="icon" icon="[[_computeRequirementIcon(item.satisfied)]]"></iron-icon>
-        </span>
-        [[item.fallback_text]]
+    </div>
+    <div class$="optional [[_computeShowOptional(_optionalLabels.*)]]">
+      <span class="title">Optional for submission</span>
+      <div class="fieldContainer">
+        <template
+            is="dom-repeat"
+            items="[[_optionalLabels]]">
+          <gr-label
+              tabindex="0"
+              id$="[[item.label]]"
+              class$="requirement [[item.style]]">
+            <span class="labelName">[[_computeLabelShortcut(item.label)]]</span>
+            <span class="status">
+                <template is="dom-if" if="[[item.icon]]">
+                  <iron-icon class="icon" icon="[[item.icon]]"></iron-icon>
+                </template>
+                <template is="dom-if" if="[[!item.icon]]">
+                  <span>[[_computeLabelValue(item.labelInfo.value)]]</span>
+                </template>
+              </span>
+          </gr-label>
+          <gr-hovercard position="top" for="[[item.label]]">
+            <gr-label-info
+                change="{{change}}"
+                account="[[account]]"
+                mutable="[[mutable]]"
+                label="[[item.label]]"
+                label-info="[[item.labelInfo]]"></gr-label-info>
+          </gr-hovercard>
+        </template>
       </div>
-    </template>
+    </div>
   </template>
   <script src="gr-change-requirements.js"></script>
 </dom-module>
diff --git a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.js b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.js
index 765f639..14b7875 100644
--- a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.js
+++ b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements.js
@@ -23,31 +23,33 @@
     properties: {
       /** @type {?} */
       change: Object,
-      requirements: {
+      account: Object,
+      mutable: Boolean,
+      _requirements: {
         type: Array,
         computed: '_computeRequirements(change)',
       },
-      labels: {
+      _requiredLabels: {
         type: Array,
-        computed: '_computeLabels(change)',
+        value: () => [],
+      },
+      _optionalLabels: {
+        type: Array,
+        value: () => [],
       },
       _showWip: {
         type: Boolean,
         computed: '_computeShowWip(change)',
       },
-      _showLabels: {
-        type: Boolean,
-        computed: '_computeShowLabelStatus(change)',
-      },
     },
 
     behaviors: [
       Gerrit.RESTClientBehavior,
     ],
 
-    _computeShowLabelStatus(change) {
-      return change.status === this.ChangeStatus.NEW;
-    },
+    observers: [
+      '_computeLabels(change.labels.*)',
+    ],
 
     _computeShowWip(change) {
       return change.work_in_progress;
@@ -62,41 +64,75 @@
           _requirements.push(requirement);
         }
       }
+      if (change.work_in_progress) {
+        _requirements.push({
+          fallback_text: 'WIP',
+          tooltip: 'Change must not be in \'Work in Progress\' state.',
+        });
+      }
 
       return _requirements;
     },
 
-    _computeLabels(change) {
-      const labels = change.labels;
-      const _labels = [];
-
-      for (const label in labels) {
-        if (!labels.hasOwnProperty(label)) { continue; }
-        const obj = labels[label];
-        if (obj.optional) { continue; }
-
-        const icon = this._computeRequirementIcon(obj.approved);
-        const style = this._computeRequirementClass(obj.approved);
-        _labels.push({label, icon, style});
-      }
-
-      return _labels;
-    },
-
     _computeRequirementClass(requirementStatus) {
-      if (requirementStatus) {
-        return 'satisfied';
-      } else {
-        return 'unsatisfied';
-      }
+      return requirementStatus ? 'positive' : 'neutral';
     },
 
     _computeRequirementIcon(requirementStatus) {
-      if (requirementStatus) {
-        return 'gr-icons:check';
-      } else {
-        return 'gr-icons:hourglass';
+      return requirementStatus ? 'gr-icons:check' : 'gr-icons:hourglass';
+    },
+
+    _computeLabels(labelsRecord) {
+      const labels = labelsRecord.base;
+      this._optionalLabels = [];
+      this._requiredLabels = [];
+
+      for (const label in labels) {
+        if (!labels.hasOwnProperty(label)) { continue; }
+
+        const labelInfo = labels[label];
+        const icon = this._computeLabelIcon(labelInfo);
+        const style = this._computeLabelClass(labelInfo);
+        const path = labelInfo.optional ? '_optionalLabels' : '_requiredLabels';
+
+        this.push(path, {label, icon, style, labelInfo});
       }
     },
+
+    /**
+     * @param {Object} labelInfo
+     * @return {string|undefined} The icon name, or undefined if no icon should
+     *     be used.
+     */
+    _computeLabelIcon(labelInfo) {
+      if (labelInfo.approved) { return 'gr-icons:check'; }
+      if (labelInfo.rejected) { return 'gr-icons:close'; }
+      // If there is an intermediate vote (e.g. +1 on a label with max value
+      // +2), the value field will be populated.
+      if (!labelInfo.value) { return 'gr-icons:hourglass'; }
+      return undefined;
+    },
+
+    /**
+     * @param {Object} labelInfo
+     */
+    _computeLabelClass(labelInfo) {
+      const value = labelInfo.value || 0;
+      if (value > 0 || labelInfo.approved) { return 'positive'; }
+      if (value < 0 || labelInfo.rejected) { return 'negative'; }
+      return 'neutral';
+    },
+
+    _computeLabelShortcut(label) {
+      return label.split('-').reduce((a, i) => a + i[0].toUpperCase(), '');
+    },
+
+    _computeShowOptional(optionalFieldsRecord) {
+      return optionalFieldsRecord.base.length ? '' : 'hidden';
+    },
+
+    _computeLabelValue(value) {
+      return (value > 0 ? '+' : '') + value;
+    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements_test.html b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements_test.html
index efac0c2..ff939be 100644
--- a/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-requirements/gr-change-requirements_test.html
@@ -40,19 +40,77 @@
       element = fixture('basic');
     });
 
-    test('computed fields', () => {
-      assert.isTrue(element._computeShowLabelStatus({status: 'NEW'}));
-      assert.isFalse(element._computeShowLabelStatus({status: 'MERGED'}));
-      assert.isFalse(element._computeShowLabelStatus({status: 'ABANDONED'}));
-
+    test('requirements computed fields', () => {
       assert.isTrue(element._computeShowWip({work_in_progress: true}));
       assert.isFalse(element._computeShowWip({work_in_progress: false}));
 
-      assert.equal(element._computeRequirementClass(true), 'satisfied');
-      assert.equal(element._computeRequirementClass(false), 'unsatisfied');
+      assert.equal(element._computeRequirementClass(true), 'positive');
+      assert.equal(element._computeRequirementClass(false), 'neutral');
 
       assert.equal(element._computeRequirementIcon(true), 'gr-icons:check');
-      assert.equal(element._computeRequirementIcon(false), 'gr-icons:hourglass');
+      assert.equal(element._computeRequirementIcon(false),
+          'gr-icons:hourglass');
+    });
+
+    test('label computed fields', () => {
+      assert.equal(element._computeLabelIcon({approved: []}), 'gr-icons:check');
+      assert.equal(element._computeLabelIcon({rejected: []}), 'gr-icons:close');
+      assert.equal(element._computeLabelIcon({}), 'gr-icons:hourglass');
+      assert.equal(element._computeLabelIcon({value: 1}), undefined);
+
+      assert.equal(element._computeLabelClass({approved: []}), 'positive');
+      assert.equal(element._computeLabelClass({value: 1}), 'positive');
+      assert.equal(element._computeLabelClass({rejected: []}), 'negative');
+      assert.equal(element._computeLabelClass({value: -1}), 'negative');
+      assert.equal(element._computeLabelClass({}), 'neutral');
+      assert.equal(element._computeLabelClass({value: 0}), 'neutral');
+
+      assert.equal(element._computeLabelShortcut('Code-Review'), 'CR');
+      assert.equal(element._computeLabelShortcut('Verified'), 'V');
+      assert.equal(element._computeLabelShortcut('Library-Compliance'), 'LC');
+      assert.equal(element._computeLabelShortcut('PolyGerrit-Review'), 'PR');
+      assert.equal(element._computeLabelShortcut('polygerrit-review'), 'PR');
+      assert.equal(element._computeLabelShortcut(
+          'Some-Special-Label-7'), 'SSL7');
+
+      assert.equal(element._computeLabelValue(1), '+1');
+      assert.equal(element._computeLabelValue(-1), '-1');
+      assert.equal(element._computeLabelValue(0), '0');
+    });
+
+    test('_computeLabels', () => {
+      assert.equal(element._optionalLabels.length, 0);
+      assert.equal(element._requiredLabels.length, 0);
+      element._computeLabels({base: {
+        test: {
+          all: [{_account_id: 1, name: 'bojack', value: 1}],
+          default_value: 0,
+          values: [],
+          value: 1,
+        },
+        opt_test: {
+          all: [{_account_id: 1, name: 'bojack', value: 1}],
+          default_value: 0,
+          values: [],
+          optional: true,
+        },
+      }});
+      assert.equal(element._optionalLabels.length, 1);
+      assert.equal(element._requiredLabels.length, 1);
+
+      assert.equal(element._optionalLabels[0].label, 'opt_test');
+      assert.equal(element._optionalLabels[0].icon, 'gr-icons:hourglass');
+      assert.equal(element._optionalLabels[0].style, 'neutral');
+      assert.ok(element._optionalLabels[0].labelInfo);
+    });
+
+    test('optional show/hide', () => {
+      const optionalSection = element.$$('.optional');
+      assert.isTrue(isHidden(optionalSection));
+      element._optionalLabels = [{label: 'test'}];
+      flushAsynchronousOperations();
+
+      assert.isFalse(isHidden(optionalSection));
     });
 
     test('properly converts satisfied labels', () => {
@@ -67,10 +125,10 @@
       };
       flushAsynchronousOperations();
 
-      const labelName = element.$$('.satisfied .labelName');
+      const labelName = element.$$('.positive .labelName');
       assert.ok(labelName);
       assert.isFalse(labelName.hasAttribute('hidden'));
-      assert.equal(labelName.innerHTML, 'Verified');
+      assert.equal(labelName.innerHTML, 'V');
     });
 
     test('properly converts unsatisfied labels', () => {
@@ -84,10 +142,10 @@
       };
       flushAsynchronousOperations();
 
-      const labelName = element.$$('.unsatisfied .labelName');
+      const labelName = element.$$('.neutral .labelName');
       assert.ok(labelName);
       assert.isFalse(labelName.hasAttribute('hidden'));
-      assert.equal(labelName.innerHTML, 'Verified');
+      assert.equal(labelName.innerHTML, 'V');
     });
 
     test('properly displays Work In Progress', () => {
@@ -99,13 +157,10 @@
       };
       flushAsynchronousOperations();
 
-      const changeIsWip = element.$$('.changeIsWip.unsatisfied');
+      const changeIsWip = element.$$('gr-label.neutral');
       assert.ok(changeIsWip);
-      assert.isFalse(changeIsWip.hasAttribute('hidden'));
-      assert.notEqual(changeIsWip.innerHTML.indexOf('Work in Progress'), -1);
     });
 
-
     test('properly displays a satisfied requirement', () => {
       element.change = {
         status: 'NEW',
@@ -117,12 +172,12 @@
       };
       flushAsynchronousOperations();
 
-      const satisfiedRequirement = element.$$('.satisfied');
+      const satisfiedRequirement = element.$$('.positive');
       assert.ok(satisfiedRequirement);
       assert.isFalse(satisfiedRequirement.hasAttribute('hidden'));
 
-      // Extract the content of the text node (second element, after the span)
-      const textNode = satisfiedRequirement.childNodes[1].nodeValue.trim();
+      // Extract the content of the text node.
+      const textNode = satisfiedRequirement.childNodes[0].nodeValue.trim();
       assert.equal(textNode, 'Resolve all comments');
     });
   });
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
index b26d649..494bca7 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
@@ -396,10 +396,10 @@
           <gr-change-metadata
               id="metadata"
               change="{{_change}}"
+              account="[[_account]]"
               revision="[[_selectedRevision]]"
               commit-info="[[_commitInfo]]"
               server-config="[[_serverConfig]]"
-              mutable="[[_loggedIn]]"
               parent-is-current="[[_parentIsCurrent]]"
               on-show-reply-dialog="_handleShowReplyDialog">
           </gr-change-metadata>
diff --git a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
index 41e5227..2ec224a 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
@@ -150,10 +150,10 @@
         min-width: 3.5em;
       }
       .added {
-        color: #388E3C;
+        color: var(--vote-text-color-recommended);
       }
       .removed {
-        color: #D32F2F;
+        color: var(--vote-text-color-disliked);
         text-align: left;
       }
       .drafts {
diff --git a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
index e9d8ce8..bd985cd 100644
--- a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
+++ b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list.html
@@ -83,7 +83,7 @@
         color: #1b5e20;
       }
       .submittableCheck {
-        color: #388E3C;
+        color: var(--vote-text-color-recommended);
         display: none;
       }
       .submittableCheck.submittable {
diff --git a/polygerrit-ui/app/elements/shared/gr-account-chip/gr-account-chip.html b/polygerrit-ui/app/elements/shared/gr-account-chip/gr-account-chip.html
index 89ab8fe..543ed85 100644
--- a/polygerrit-ui/app/elements/shared/gr-account-chip/gr-account-chip.html
+++ b/polygerrit-ui/app/elements/shared/gr-account-chip/gr-account-chip.html
@@ -70,6 +70,7 @@
       .transparentBackground,
       gr-button.transparentBackground {
         background-color: transparent;
+        padding: 0;
       }
       :host([disabled]) {
         opacity: .6;
diff --git a/polygerrit-ui/app/elements/shared/gr-label-info/gr-label-info.js b/polygerrit-ui/app/elements/shared/gr-label-info/gr-label-info.js
index 750ba1c..a1737b2 100644
--- a/polygerrit-ui/app/elements/shared/gr-label-info/gr-label-info.js
+++ b/polygerrit-ui/app/elements/shared/gr-label-info/gr-label-info.js
@@ -177,7 +177,9 @@
     _computeShowPlaceholder(labelInfo, changeLabelsRecord) {
       if (labelInfo.all) {
         for (const label of labelInfo.all) {
-          if (label.value) { return 'hidden'; }
+          if (label.value && label.value != labelInfo.default_value) {
+            return 'hidden';
+          }
         }
       }
       return '';
diff --git a/polygerrit-ui/app/styles/gr-voting-styles.html b/polygerrit-ui/app/styles/gr-voting-styles.html
index 96c8026..3b1ee64 100644
--- a/polygerrit-ui/app/styles/gr-voting-styles.html
+++ b/polygerrit-ui/app/styles/gr-voting-styles.html
@@ -21,9 +21,9 @@
       :host {
         --vote-chip-styles: {
           border: 1px solid rgba(0,0,0,.12);
-          border-radius: 12px;
+          border-radius: 1em;
           box-shadow: none;
-          min-width: 40px;
+          min-width: 3em;
         }
       }
     </style>
diff --git a/polygerrit-ui/app/styles/themes/app-theme.html b/polygerrit-ui/app/styles/themes/app-theme.html
index 21db329..81c195a 100644
--- a/polygerrit-ui/app/styles/themes/app-theme.html
+++ b/polygerrit-ui/app/styles/themes/app-theme.html
@@ -76,6 +76,9 @@
   --vote-color-disliked: #f7c4cb;
   --vote-color-neutral: #ebf5fb;
 
+  --vote-text-color-recommended: #388E3C;
+  --vote-text-color-disliked: #D32F2F;
+
   /* Diff colors */
   --diff-selection-background-color: #c7dbf9;
   --light-remove-highlight-color: #FFEBEE;