Use tippy.js for context popup (#20393)

By appending the tooltips to `document.body`, we can avoid any stacking context issues caused by surrounding element's CSS.

This uses [tippy.js](https://github.com/atomiks/tippyjs) instead of Fomantic popups. We should aim to replace all Fomantic popups with this eventually and then get rid of the Fomantic `popup` module completely.

package-lock.json

@@ -29,6 +29,7 @@
         "pretty-ms": "7.0.1",
         "sortablejs": "1.15.0",
         "swagger-ui-dist": "4.11.1",
+        "tippy.js": "6.3.7",
         "tributejs": "5.1.3",
         "uint8-to-base64": "0.2.0",
         "vue": "2.6.14",
@@ -1599,6 +1600,15 @@
         "node": ">= 8"
       }
     },
+    "node_modules/@popperjs/core": {
+      "version": "2.11.5",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.5.tgz",
+      "integrity": "sha512-9X2obfABZuDVLCgPK9aX0a/x4jaOEweTTWE2+9sr0Qqqevj2Uv5XorvusThmc9XGYpS9yI+fhh8RTafBtGposw==",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/popperjs"
+      }
+    },
     "node_modules/@primer/octicons": {
       "version": "17.2.0",
       "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-17.2.0.tgz",
@@ -11400,6 +11410,14 @@
       "integrity": "sha512-8hmiGIJMDlwjg7dlJ4yKGLK8EsYqKgPWbG3b4wjJddKNwc7N7Dpn08Df4szr/sZdMVeOstrdYSsqzX6BYbcB+w==",
       "dev": true
     },
+    "node_modules/tippy.js": {
+      "version": "6.3.7",
+      "resolved": "https://registry.npmjs.org/tippy.js/-/tippy.js-6.3.7.tgz",
+      "integrity": "sha512-E1d3oP2emgJ9dRQZdf3Kkn0qJgI6ZLpyS5z6ZkY1DF3kaQaBsGZsndEpHwx+eC+tYM41HaSNvNtLx8tU57FzTQ==",
+      "dependencies": {
+        "@popperjs/core": "^2.9.0"
+      }
+    },
     "node_modules/tmpl": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz",
@@ -13567,6 +13585,11 @@
         "fastq": "^1.6.0"
       }
     },
+    "@popperjs/core": {
+      "version": "2.11.5",
+      "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.5.tgz",
+      "integrity": "sha512-9X2obfABZuDVLCgPK9aX0a/x4jaOEweTTWE2+9sr0Qqqevj2Uv5XorvusThmc9XGYpS9yI+fhh8RTafBtGposw=="
+    },
     "@primer/octicons": {
       "version": "17.2.0",
       "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-17.2.0.tgz",
@@ -21235,6 +21258,14 @@
       "integrity": "sha512-8hmiGIJMDlwjg7dlJ4yKGLK8EsYqKgPWbG3b4wjJddKNwc7N7Dpn08Df4szr/sZdMVeOstrdYSsqzX6BYbcB+w==",
       "dev": true
     },
+    "tippy.js": {
+      "version": "6.3.7",
+      "resolved": "https://registry.npmjs.org/tippy.js/-/tippy.js-6.3.7.tgz",
+      "integrity": "sha512-E1d3oP2emgJ9dRQZdf3Kkn0qJgI6ZLpyS5z6ZkY1DF3kaQaBsGZsndEpHwx+eC+tYM41HaSNvNtLx8tU57FzTQ==",
+      "requires": {
+        "@popperjs/core": "^2.9.0"
+      }
+    },
     "tmpl": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz",

package.json

@@ -29,6 +29,7 @@
     "pretty-ms": "7.0.1",
     "sortablejs": "1.15.0",
     "swagger-ui-dist": "4.11.1",
+    "tippy.js": "6.3.7",
     "tributejs": "5.1.3",
     "uint8-to-base64": "0.2.0",
     "vue": "2.6.14",

web_src/js/features/contextpopup.js

@@ -2,6 +2,7 @@ import $ from 'jquery';
 import Vue from 'vue';
 import ContextPopup from '../components/ContextPopup.vue';
 import {parseIssueHref} from '../utils.js';
+import {createTippy} from '../modules/tippy.js';
 
 export default function initContextPopups() {
   const refIssues = $('.ref-issue');
@@ -16,7 +17,6 @@ export default function initContextPopups() {
     if (!owner) return;
 
     const el = document.createElement('div');
-    el.className = 'ui custom popup hidden';
     el.innerHTML = '<div></div>';
     this.parentNode.insertBefore(el, this.nextSibling);
 
@@ -33,17 +33,12 @@ export default function initContextPopups() {
       el.textContent = 'ContextPopup failed to load';
     }
 
-    $(this).popup({
-      variation: 'wide',
-      delay: {
-        show: 250
-      },
+    createTippy(this, {
+      content: el,
+      interactive: true,
       onShow: () => {
-        view.$emit('load-context-popup', {owner, repo, index}, () => {
-          $(this).popup('reposition');
-        });
-      },
-      popup: $(el),
+        view.$emit('load-context-popup', {owner, repo, index});
+      }
     });
   });
 }

web_src/js/modules/tippy.js

@@ -0,0 +1,12 @@
+import tippy from 'tippy.js';
+
+export function createTippy(target, opts) {
+  return tippy(target, {
+    appendTo: document.body,
+    placement: 'top-start',
+    animation: false,
+    allowHTML: true,
+    arrow: `<svg width="16" height="7"><path d="m0 7 8-7 8 7Z" class="tippy-svg-arrow-outer"/><path d="m0 8 8-7 8 7Z" class="tippy-svg-arrow-inner"/></svg>`,
+    ...opts,
+  });
+}

web_src/less/index.less

@@ -9,6 +9,7 @@
 @import "./features/imagediff.less";
 @import "./features/codeeditor.less";
 @import "./features/projects.less";
+@import "./modules/tippy.less";
 @import "./markup/content.less";
 @import "./markup/codecopy.less";
 @import "./code/linebutton.less";

web_src/less/modules/tippy.less

@@ -0,0 +1,84 @@
+/* styles are based on node_modules/tippy.js/dist/tippy.css */
+
+.tippy-box[data-animation="fade"][data-state="hidden"] {
+  opacity: 0;
+}
+
+[data-tippy-root] {
+  max-width: calc(100vw - 10px);
+}
+
+.tippy-box {
+  position: relative;
+  background-color: var(--color-body);
+  color: var(--color-secondary-dark-6);
+  border: 1px solid var(--color-secondary);
+  border-radius: var(--border-radius);
+  font-size: 1rem;
+  transition-property: transform, visibility, opacity;
+}
+
+.tippy-content {
+  position: relative;
+  padding: 1rem;
+  z-index: 1;
+}
+
+.tippy-box[data-placement^="top"] > .tippy-svg-arrow {
+  bottom: 0;
+}
+
+.tippy-box[data-placement^="top"] > .tippy-svg-arrow::after,
+.tippy-box[data-placement^="top"] > .tippy-svg-arrow > svg {
+  top: 16px;
+  transform: rotate(180deg);
+}
+
+.tippy-box[data-placement^="bottom"] > .tippy-svg-arrow {
+  top: 0;
+}
+
+.tippy-box[data-placement^="bottom"] > .tippy-svg-arrow > svg {
+  bottom: 16px;
+}
+
+.tippy-box[data-placement^="left"] > .tippy-svg-arrow {
+  right: 0;
+}
+
+.tippy-box[data-placement^="left"] > .tippy-svg-arrow::after,
+.tippy-box[data-placement^="left"] > .tippy-svg-arrow > svg {
+  transform: rotate(90deg);
+  top: calc(50% - 3px);
+  left: 11px;
+}
+
+.tippy-box[data-placement^="right"] > .tippy-svg-arrow {
+  left: 0;
+}
+
+.tippy-box[data-placement^="right"] > .tippy-svg-arrow::after,
+.tippy-box[data-placement^="right"] > .tippy-svg-arrow > svg {
+  transform: rotate(-90deg);
+  top: calc(50% - 3px);
+  right: 11px;
+}
+
+.tippy-svg-arrow {
+  width: 16px;
+  height: 16px;
+  text-align: initial;
+}
+
+.tippy-svg-arrow,
+.tippy-svg-arrow > svg {
+  position: absolute;
+}
+
+.tippy-svg-arrow-outer {
+  fill: var(--color-secondary);
+}
+
+.tippy-svg-arrow-inner {
+  fill: var(--color-body);
+}