feat(selection): Add helper functions to select tags.

Author: jenstroeger

src/content.js

@@ -161,9 +161,14 @@ export function unwrapInternalNodes (sibling, keepUiElements) {
 
 // Get all tags that start or end inside the range
 export function getTags (host, range, filterFunc) {
-  const tags = getInnerTags(range, filterFunc)
+  const innerTags = getInnerTags(range, filterFunc)
+  const ancestorTags = getAncestorTags(host, range, filterFunc)
+  return innerTags.concat(ancestorTags)
+}
 
-  // get all tags that surround the range
+// Get all ancestor tags that start or end inside the range
+export function getAncestorTags (host, range, filterFunc) {
+  let tags = []
   let node = range.commonAncestorContainer
   while (node !== host) {
     if (!filterFunc || filterFunc(node)) tags.push(node)

src/cursor.js

@@ -65,6 +65,16 @@ export default class Cursor {
     return content.getTagsByName(this.host, this.range, tagName)
   }
 
+  // Get all tags that are completely withing the current selection.
+  getInnerTags (filterFunc) {
+    return content.getInnerTags(this.range, filterFunc)
+  }
+
+  // Get all tags that surround the current selection.
+  getAncestorTags (filterFunc) {
+    return content.getAncestorTags(this.host, this.range, filterFunc)
+  }
+
   isAtEnd () {
     return parser.isEndOfHost(
       this.host,