1 files changed, 161 insertions, 0 deletions
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
new file mode 100644
index 0000000000..40edc28015
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+++ b/polygerrit-ui/app/elements/shared/gr-label-info/gr-label-info.js
@@ -0,0 +1,161 @@
+/**
+ * @license
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+(function() {
+  'use strict';
+
+  Polymer({
+    is: 'gr-label-info',
+
+    properties: {
+      labelInfo: Object,
+      label: String,
+      /** @type {?} */
+      change: Object,
+      account: Object,
+      mutable: Boolean,
+    },
+
+    /**
+     * @param {!Object} labelInfo
+     * @param {!Object} account
+     * @param {Object} changeLabelsRecord not used, but added as a parameter in
+     *    order to trigger computation when a label is removed from the change.
+     */
+    _mapLabelInfo(labelInfo, account, changeLabelsRecord) {
+      const result = [];
+      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;
+      }
+      // Sort votes by positivity.
+      const votes = (labelInfo.all || []).sort((a, b) => a.value - b.value);
+      const values = Object.keys(labelInfo.values);
+      for (const label of votes) {
+        if (label.value && label.value != labelInfo.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';
+            }
+          }
+          const formattedLabel = {
+            value: labelValPrefix + label.value,
+            className: labelClassName,
+            account: label,
+          };
+          if (label._account_id === account._account_id) {
+            // Put self-votes at the top.
+            result.unshift(formattedLabel);
+          } else {
+            result.push(formattedLabel);
+          }
+        }
+      }
+      return result;
+    },
+
+    /**
+     * 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
+     * @param {!Object} change
+     */
+    _computeDeleteClass(reviewer, mutable, change) {
+      if (!mutable || !change || !change.removable_reviewers) {
+        return 'hidden';
+      }
+      const removable = change.removable_reviewers;
+      if (removable.find(r => r._account_id === reviewer._account_id)) {
+        return '';
+      }
+      return 'hidden';
+    },
+
+    /**
+     * Closure annotation for Polymer.prototype.splice is off.
+     * For now, supressing annotations.
+     *
+     * @suppress {checkTypes} */
+    _onDeleteVote(e) {
+      e.preventDefault();
+      let target = Polymer.dom(e).rootTarget;
+      while (!target.classList.contains('deleteBtn')) {
+        if (!target.parentElement) { return; }
+        target = target.parentElement;
+      }
+
+      target.disabled = true;
+      const accountID = parseInt(target.getAttribute('data-account-id'), 10);
+      this._xhrPromise =
+          this.$.restAPI.deleteVote(this.change._number, accountID, this.label)
+          .then(response => {
+            target.disabled = false;
+            if (!response.ok) { return; }
+            Gerrit.Nav.navigateToChange(this.change);
+          }).catch(err => {
+            target.disabled = false;
+            return;
+          });
+    },
+
+    _computeValueTooltip(labelInfo, score) {
+      if (!labelInfo || !labelInfo.values || !labelInfo.values[score]) {
+        return '';
+      }
+      return labelInfo.values[score];
+    },
+
+    /**
+     * @param {!Object} labelInfo
+     * @param {Object} changeLabelsRecord not used, but added as a parameter in
+     *    order to trigger computation when a label is removed from the change.
+     */
+    _computeShowPlaceholder(labelInfo, changeLabelsRecord) {
+      if (labelInfo.all) {
+        for (const label of labelInfo.all) {
+          if (label.value && label.value != labelInfo.default_value) {
+            return 'hidden';
+          }
+        }
+      }
+      return '';
+    },
+  });
+})();