Merge branch 'better-still-emoji' into proper-attachments

* better-still-emoji:
  fix tests
  prevent infinite update loops
  remove obsolete tests
  removed useless code, review change, fixed bug with tall statuses
  fixed mentions line again
  remove old emoji added, everything emoji-bearing uses RichContent now
  richcontent support in polls, user cards and user profiles
  support richcontent in polls
  fix tests, add performance test (skipped, doesn't assert anything), tweak max mentions count
  made the code responsible for showing unwritten mentions actually work
  remove new options for style and separate line, now groups all chained mentions on a mentionsline regardless of placement. fixes spacing
  fix tests

1 files changed, 52 insertions, 137 deletions

diff --git a/src/components/rich_content/rich_content.jsx b/src/components/rich_content/rich_content.jsx
index cd73f2e5..1353541f 100644
--- a/src/components/rich_content/rich_content.jsx
+++ b/src/components/rich_content/rich_content.jsx
@@ -4,8 +4,7 @@ import { getTagName, processTextForEmoji, getAttrs } from 'src/services/html_con
 import { convertHtmlToTree } from 'src/services/html_converter/html_tree_converter.service.js'
 import { convertHtmlToLines } from 'src/services/html_converter/html_line_converter.service.js'
 import StillImage from 'src/components/still-image/still-image.vue'
-import MentionLink from 'src/components/mention_link/mention_link.vue'
-import MentionsLine from 'src/components/mentions_line/mentions_line.vue'
+import MentionsLine, { MENTIONS_LIMIT } from 'src/components/mentions_line/mentions_line.vue'
 
 import './rich_content.scss'
 
@@ -13,12 +12,11 @@ import './rich_content.scss'
  * RichContent, The Über-powered component for rendering Post HTML.
  *
  * This takes post HTML and does multiple things to it:
- * - Converts mention links to <MentionLink>-s
- * - Removes mentions from beginning and end (hellthread style only)
+ * - Groups all mentions into <MentionsLine>, this affects all mentions regardles
+ *   of where they are (beginning/middle/end), even single mentions are converted
+ *   to a <MentionsLine> containing single <MentionLink>.
  * - Replaces emoji shortcodes with <StillImage>'d images.
  *
- * Stuff like removing mentions from beginning and end is done so that they could
- * be either replaced by collapsible <MentionsLine>  or moved to separate place.
  * There are two problems with this component's architecture:
  * 1. Parsing HTML and rendering are inseparable. Attempts to separate the two
  *    proven to be a massive overcomplication due to amount of things done here.
@@ -56,25 +54,22 @@ export default Vue.component('RichContent', {
       required: false,
       type: Boolean,
       default: false
-    },
-    hideMentions: {
-      required: false,
-      type: Boolean,
-      default: false
     }
   },
   // NEVER EVER TOUCH DATA INSIDE RENDER
   render (h) {
     // Pre-process HTML
-    const { newHtml: html, lastMentions } = preProcessPerLine(this.html, this.greentext, this.handleLinks)
-    const firstMentions = [] // Mentions that appear in the beginning of post body
+    const { newHtml: html } = preProcessPerLine(this.html, this.greentext)
+    let currentMentions = null // Current chain of mentions, we group all mentions together
+
     const lastTags = [] // Tags that appear at the end of post body
     const writtenMentions = [] // All mentions that appear in post body
+    const invisibleMentions = [] // All mentions that go beyond the limiter (see MentionsLine)
+    // to collapse too many mentions in a row
     const writtenTags = [] // All tags that appear in post body
     // unique index for vue "tag" property
     let mentionIndex = 0
     let tagsIndex = 0
-    let firstMentionReplaced = false
 
     const renderImage = (tag) => {
       return <StillImage
@@ -98,41 +93,35 @@ export default Vue.component('RichContent', {
     const renderMention = (attrs, children) => {
       const linkData = getLinkData(attrs, children, mentionIndex++)
       linkData.notifying = this.attentions.some(a => a.statusnet_profile_url === linkData.url)
-      if (!linkData.notifying) {
-        encounteredText = true
-      }
       writtenMentions.push(linkData)
-      if (!encounteredText) {
-        firstMentions.push(linkData)
-        if (!firstMentionReplaced && !this.hideMentions) {
-          firstMentionReplaced = true
-          return <MentionsLine mentions={ firstMentions } />
-        } else {
-          return ''
-        }
+      if (currentMentions === null) {
+        currentMentions = []
+      }
+      currentMentions.push(linkData)
+      if (currentMentions.length > MENTIONS_LIMIT) {
+        invisibleMentions.push(linkData)
+      }
+      if (currentMentions.length === 1) {
+        return <MentionsLine mentions={ currentMentions } />
       } else {
-        return <MentionLink
-          url={attrs.href}
-          content={flattenDeep(children).join('')}
-        />
+        return ''
       }
     }
 
-    // We stop treating mentions as "first" ones when we encounter
-    // non-whitespace text
-    let encounteredText = false
     // Processor to use with html_tree_converter
     const processItem = (item, index, array, what) => {
       // Handle text nodes - just add emoji
       if (typeof item === 'string') {
         const emptyText = item.trim() === ''
-        if (emptyText) {
-          return encounteredText ? item : item.trim()
+        if (item.includes('\n')) {
+          currentMentions = null
         }
-        if (!encounteredText) {
-          item = item.trimStart()
-          encounteredText = true
+        if (emptyText) {
+          // don't include spaces when processing mentions - we'll include them
+          // in MentionsLine
+          return currentMentions !== null ? item.trim() : item
         }
+        currentMentions = null
         if (item.includes(':')) {
           item = ['', processTextForEmoji(
             item,
@@ -156,28 +145,25 @@ export default Vue.component('RichContent', {
         const Tag = getTagName(opener)
         const attrs = getAttrs(opener)
         switch (Tag) {
-          case 'span': // Replace last mentions class with mentionsline
-            if (attrs['class'] && attrs['class'].includes('lastMentions')) {
-              if (firstMentions.length > 1 && lastMentions.length > 1) {
-                break
-              } else {
-                return !this.hideMentions ? <MentionsLine mentions={lastMentions} /> : ''
-              }
-            } else {
-              break
-            }
+          case 'br':
+            currentMentions = null
+            break
           case 'img': // replace images with StillImage
             return renderImage(opener)
           case 'a': // replace mentions with MentionLink
             if (!this.handleLinks) break
             if (attrs['class'] && attrs['class'].includes('mention')) {
               // Handling mentions here
-              return renderMention(attrs, children, encounteredText)
+              return renderMention(attrs, children)
             } else {
               // Everything else will be handled in reverse pass
-              encounteredText = true
+              currentMentions = null
               return item // We'll handle it later
             }
+          case 'span':
+            if (this.handleLinks && attrs['class'] && attrs['class'].includes('h-card')) {
+              return ['', children.map(processItem), '']
+            }
         }
 
         if (children !== undefined) {
@@ -246,11 +232,10 @@ export default Vue.component('RichContent', {
     </span>
 
     const event = {
-      firstMentions,
-      lastMentions,
       lastTags,
       writtenMentions,
-      writtenTags
+      writtenTags,
+      invisibleMentions
     }
 
     // DO NOT MOVE TO UPDATE. BAD IDEA.
@@ -261,44 +246,46 @@ export default Vue.component('RichContent', {
 })
 
 const getLinkData = (attrs, children, index) => {
+  const stripTags = (item) => {
+    if (typeof item === 'string') {
+      return item
+    } else {
+      return item[1].map(stripTags).join('')
+    }
+  }
+  const textContent = children.map(stripTags).join('')
   return {
     index,
     url: attrs.href,
     hashtag: attrs['data-tag'],
-    content: flattenDeep(children).join('')
+    content: flattenDeep(children).join(''),
+    textContent
   }
 }
 
 /** Pre-processing HTML
  *
- * Currently this does two things:
+ * Currently this does one thing:
  * - add green/cyantexting
- * - wrap and mark last line containing only mentions as ".lastMentionsLine" for
- *   more compact hellthreads.
  *
  * @param {String} html - raw HTML to process
  * @param {Boolean} greentext - whether to enable greentexting or not
- * @param {Boolean} handleLinks - whether to handle links or not
  */
-export const preProcessPerLine = (html, greentext, handleLinks) => {
-  const lastMentions = []
+export const preProcessPerLine = (html, greentext) => {
   const greentextHandle = new Set(['p', 'div'])
 
-  let nonEmptyIndex = -1
   const lines = convertHtmlToLines(html)
-  const linesNum = lines.filter(c => c.text).length
   const newHtml = lines.reverse().map((item, index, array) => {
     // Going over each line in reverse to detect last mentions,
     // keeping non-text stuff as-is
     if (!item.text) return item
     const string = item.text
-    nonEmptyIndex += 1
 
     // Greentext stuff
     if (
       // Only if greentext is engaged
       greentext &&
-        // Only handle p's and divs. Don't want to affect blocquotes, code etc
+        // Only handle p's and divs. Don't want to affect blockquotes, code etc
         item.level.every(l => greentextHandle.has(l)) &&
         // Only if line begins with '>' or '<'
         (string.includes('&gt;') || string.includes('&lt;'))
@@ -313,80 +300,8 @@ export const preProcessPerLine = (html, greentext, handleLinks) => {
       }
     }
 
-    // Converting that line part into tree
-    const tree = convertHtmlToTree(string)
-
-    // If line has loose text, i.e. text outside a mention or a tag
-    // we won't touch mentions.
-    let hasLooseText = false
-    let mentionsNum = 0
-    const process = (item) => {
-      if (Array.isArray(item)) {
-        const [opener, children, closer] = item
-        const tag = getTagName(opener)
-        // If we have a link we probably have mentions
-        if (tag === 'a') {
-          if (!handleLinks) return [opener, children, closer]
-          const attrs = getAttrs(opener)
-          if (attrs['class'] && attrs['class'].includes('mention')) {
-            // Got mentions
-            mentionsNum++
-            return [opener, children, closer]
-          } else {
-            // Not a mention? Means we have loose text or whatever
-            hasLooseText = true
-            return [opener, children, closer]
-          }
-        } else if (tag === 'span' || tag === 'p') {
-          // For span and p we need to go deeper
-          return [opener, [...children].map(process), closer]
-        } else {
-          // Everything else equals to a loose text
-          hasLooseText = true
-          return [opener, children, closer]
-        }
-      }
-
-      if (typeof item === 'string') {
-        if (item.trim() !== '') {
-          // only meaningful strings are loose text
-          hasLooseText = true
-        }
-        return item
-      }
-    }
-
-    // We now processed our tree, now we need to mark line as lastMentions
-    const result = [...tree].map(process)
-
-    if (
-      handleLinks && // Do we handle links at all?
-        mentionsNum > 1 && // Does it have more than one mention?
-        !hasLooseText && // Don't do anything if it has something besides mentions
-        nonEmptyIndex === 0 && // Only check last (first since list is reversed) line
-        nonEmptyIndex !== linesNum - 1 // Don't do anything if there's only one line
-    ) {
-      let mentionIndex = 0
-      const process = (item) => {
-        if (Array.isArray(item)) {
-          const [opener, children] = item
-          const tag = getTagName(opener)
-          if (tag === 'a') {
-            const attrs = getAttrs(opener)
-            lastMentions.push(getLinkData(attrs, children, mentionIndex++))
-          } else if (children) {
-            children.forEach(process)
-          }
-        }
-      }
-      result.forEach(process)
-      // we DO need mentions here so that we conditionally remove them if don't
-      // have first mentions
-      return ['<span class="lastMentions">', flattenDeep(result).join(''), '</span>'].join('')
-    } else {
-      return flattenDeep(result).join('')
-    }
+    return string
   }).reverse().join('')
 
-  return { newHtml, lastMentions }
+  return { newHtml }
 }