From fb0cf6454982a371e68b22e29b0374507425242d Mon Sep 17 00:00:00 2001
From: Xiaofeng An <futureweb2020@yandex.com>
Date: Fri, 8 Feb 2019 10:49:14 -0500
Subject: [PATCH] #255 - make AutoCompleteInput component

---
 .../autocomplete_input/autocomplete_input.js  | 147 ++++++++++++++++++
 .../autocomplete_input/autocomplete_input.vue |  34 ++++
 .../post_status_form/post_status_form.js      | 129 +--------------
 .../post_status_form/post_status_form.vue     |  35 +----
 4 files changed, 196 insertions(+), 149 deletions(-)
 create mode 100644 src/components/autocomplete_input/autocomplete_input.js
 create mode 100644 src/components/autocomplete_input/autocomplete_input.vue

diff --git a/src/components/autocomplete_input/autocomplete_input.js b/src/components/autocomplete_input/autocomplete_input.js
new file mode 100644
index 00000000..51c1f5d9
--- /dev/null
+++ b/src/components/autocomplete_input/autocomplete_input.js
@@ -0,0 +1,147 @@
+import Completion from '../../services/completion/completion.js'
+import { take, filter, map } from 'lodash'
+
+const AutoCompleteInput = {
+  props: [
+    'classObj',
+    'value',
+    'autoResize',
+    'drop',
+    'dragoverPrevent',
+    'paste',
+    'keydownMetaEnter',
+    'keyupCtrlEnter'
+  ],
+  components: {},
+  mounted () {
+    this.autoResize && this.resize(this.$refs.textarea)
+    const textLength = this.$refs.textarea.value.length
+    this.$refs.textarea.setSelectionRange(textLength, textLength)
+  },
+  data () {
+    return {
+      caret: 0,
+      highlighted: 0,
+      text: this.value
+    }
+  },
+  computed: {
+    users () {
+      return this.$store.state.users.users
+    },
+    emoji () {
+      return this.$store.state.instance.emoji || []
+    },
+    customEmoji () {
+      return this.$store.state.instance.customEmoji || []
+    },
+    textAtCaret () {
+      return (this.wordAtCaret || {}).word || ''
+    },
+    wordAtCaret () {
+      const word = Completion.wordAtPosition(this.text, this.caret - 1) || {}
+      return word
+    },
+    candidates () {
+      const firstchar = this.textAtCaret.charAt(0)
+      if (firstchar === '@') {
+        const query = this.textAtCaret.slice(1).toUpperCase()
+        const matchedUsers = filter(this.users, (user) => {
+          return user.screen_name.toUpperCase().startsWith(query) ||
+            user.name && user.name.toUpperCase().startsWith(query)
+        })
+        if (matchedUsers.length <= 0) {
+          return false
+        }
+        // eslint-disable-next-line camelcase
+        return map(take(matchedUsers, 5), ({screen_name, name, profile_image_url_original}, index) => ({
+          // eslint-disable-next-line camelcase
+          screen_name: `@${screen_name}`,
+          name: name,
+          img: profile_image_url_original,
+          highlighted: index === this.highlighted
+        }))
+      } else if (firstchar === ':') {
+        if (this.textAtCaret === ':') { return }
+        const matchedEmoji = filter(this.emoji.concat(this.customEmoji), (emoji) => emoji.shortcode.startsWith(this.textAtCaret.slice(1)))
+        if (matchedEmoji.length <= 0) {
+          return false
+        }
+        return map(take(matchedEmoji, 5), ({shortcode, image_url, utf}, index) => ({
+          screen_name: `:${shortcode}:`,
+          name: '',
+          utf: utf || '',
+          // eslint-disable-next-line camelcase
+          img: utf ? '' : this.$store.state.instance.server + image_url,
+          highlighted: index === this.highlighted
+        }))
+      } else {
+        return false
+      }
+    }
+  },
+  methods: {
+    setCaret ({target: {selectionStart}}) {
+      this.caret = selectionStart
+    },
+    cycleBackward (e) {
+      const len = this.candidates.length || 0
+      if (len > 0) {
+        e.preventDefault()
+        this.highlighted -= 1
+        if (this.highlighted < 0) {
+          this.highlighted = this.candidates.length - 1
+        }
+      } else {
+        this.highlighted = 0
+      }
+    },
+    cycleForward (e) {
+      const len = this.candidates.length || 0
+      if (len > 0) {
+        if (e.shiftKey) { return }
+        e.preventDefault()
+        this.highlighted += 1
+        if (this.highlighted >= len) {
+          this.highlighted = 0
+        }
+      } else {
+        this.highlighted = 0
+      }
+    },
+    replace (replacement) {
+      this.text = Completion.replaceWord(this.text, this.wordAtCaret, replacement)
+      const el = this.$el.querySelector('textarea')
+      el.focus()
+      this.caret = 0
+    },
+    replaceCandidate (e) {
+      const len = this.candidates.length || 0
+      if (this.textAtCaret === ':' || e.ctrlKey) { return }
+      if (len > 0) {
+        e.preventDefault()
+        const candidate = this.candidates[this.highlighted]
+        const replacement = candidate.utf || (candidate.screen_name + ' ')
+        this.text = Completion.replaceWord(this.text, this.wordAtCaret, replacement)
+        const el = this.$el.querySelector('textarea')
+        el.focus()
+        this.caret = 0
+        this.highlighted = 0
+      }
+    },
+    resize (e) {
+      const target = e.target || e
+      if (!(target instanceof window.Element)) { return }
+      const vertPadding = Number(window.getComputedStyle(target)['padding-top'].substr(0, 1)) +
+            Number(window.getComputedStyle(target)['padding-bottom'].substr(0, 1))
+      // Auto is needed to make textbox shrink when removing lines
+      target.style.height = 'auto'
+      target.style.height = `${target.scrollHeight - vertPadding}px`
+      if (target.value === '') {
+        target.style.height = null
+      }
+    }
+  }
+}
+
+export default AutoCompleteInput
diff --git a/src/components/autocomplete_input/autocomplete_input.vue b/src/components/autocomplete_input/autocomplete_input.vue
new file mode 100644
index 00000000..1c049891
--- /dev/null
+++ b/src/components/autocomplete_input/autocomplete_input.vue
@@ -0,0 +1,34 @@
+<template>
+  <div>
+    <textarea
+      ref="textarea"
+      :value="text"
+      @input="text = $event.target.value, $emit('input', $event.target.value), autoResize && resize($event)" 
+      @click="setCaret"
+      @keyup="setCaret" :placeholder="$t('post_status.default')" rows="1" :class="classObj"
+      @keydown.down="cycleForward"
+      @keydown.up="cycleBackward"
+      @keydown.shift.tab="cycleBackward"
+      @keydown.tab="cycleForward"
+      @keydown.enter="replaceCandidate"
+      @drop="drop && drop()"
+      @dragover.prevent="dragoverPrevent && dragoverPrevent()"
+      @paste="paste && paste()"
+      @keydown.meta.enter="keydownMetaEnter && keydownMetaEnter()"
+      @keyup.ctrl.enter="keyupCtrlEnter && keyupCtrlEnter()">
+    </textarea>
+    <div style="position:relative;" v-if="candidates">
+      <div class="autocomplete-panel">
+        <div v-for="candidate in candidates" @click="replace(candidate.utf || (candidate.screen_name + ' '))">
+          <div class="autocomplete" :class="{ highlighted: candidate.highlighted }">
+            <span v-if="candidate.img"><img :src="candidate.img"></img></span>
+            <span v-else>{{candidate.utf}}</span>
+            <span>{{candidate.screen_name}}<small>{{candidate.name}}</small></span>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script src="./autocomplete_input.js"></script>
diff --git a/src/components/post_status_form/post_status_form.js b/src/components/post_status_form/post_status_form.js
index ab379c23..3568951f 100644
--- a/src/components/post_status_form/post_status_form.js
+++ b/src/components/post_status_form/post_status_form.js
@@ -1,8 +1,8 @@
 import statusPoster from '../../services/status_poster/status_poster.service.js'
 import MediaUpload from '../media_upload/media_upload.vue'
+import AutoCompleteInput from '../autocomplete_input/autocomplete_input.vue'
 import fileTypeService from '../../services/file_type/file_type.service.js'
-import Completion from '../../services/completion/completion.js'
-import { take, filter, reject, map, uniqBy } from 'lodash'
+import { reject, map, uniqBy } from 'lodash'
 
 const buildMentionsString = ({user, attentions}, currentUser) => {
   let allAttentions = [...attentions]
@@ -28,13 +28,10 @@ const PostStatusForm = {
     'subject'
   ],
   components: {
-    MediaUpload
+    MediaUpload,
+    AutoCompleteInput
   },
   mounted () {
-    this.resize(this.$refs.textarea)
-    const textLength = this.$refs.textarea.value.length
-    this.$refs.textarea.setSelectionRange(textLength, textLength)
-
     if (this.replyTo) {
       this.$refs.textarea.focus()
     }
@@ -61,15 +58,13 @@ const PostStatusForm = {
       submitDisabled: false,
       error: null,
       posting: false,
-      highlighted: 0,
       newStatus: {
         spoilerText: this.subject || '',
         status: statusText,
         nsfw: false,
         files: [],
         visibility: scope
-      },
-      caret: 0
+      }
     }
   },
   computed: {
@@ -81,59 +76,6 @@ const PostStatusForm = {
         direct: { selected: this.newStatus.visibility === 'direct' }
       }
     },
-    candidates () {
-      const firstchar = this.textAtCaret.charAt(0)
-      if (firstchar === '@') {
-        const query = this.textAtCaret.slice(1).toUpperCase()
-        const matchedUsers = filter(this.users, (user) => {
-          return user.screen_name.toUpperCase().startsWith(query) ||
-            user.name && user.name.toUpperCase().startsWith(query)
-        })
-        if (matchedUsers.length <= 0) {
-          return false
-        }
-        // eslint-disable-next-line camelcase
-        return map(take(matchedUsers, 5), ({screen_name, name, profile_image_url_original}, index) => ({
-          // eslint-disable-next-line camelcase
-          screen_name: `@${screen_name}`,
-          name: name,
-          img: profile_image_url_original,
-          highlighted: index === this.highlighted
-        }))
-      } else if (firstchar === ':') {
-        if (this.textAtCaret === ':') { return }
-        const matchedEmoji = filter(this.emoji.concat(this.customEmoji), (emoji) => emoji.shortcode.startsWith(this.textAtCaret.slice(1)))
-        if (matchedEmoji.length <= 0) {
-          return false
-        }
-        return map(take(matchedEmoji, 5), ({shortcode, image_url, utf}, index) => ({
-          screen_name: `:${shortcode}:`,
-          name: '',
-          utf: utf || '',
-          // eslint-disable-next-line camelcase
-          img: utf ? '' : this.$store.state.instance.server + image_url,
-          highlighted: index === this.highlighted
-        }))
-      } else {
-        return false
-      }
-    },
-    textAtCaret () {
-      return (this.wordAtCaret || {}).word || ''
-    },
-    wordAtCaret () {
-      const word = Completion.wordAtPosition(this.newStatus.status, this.caret - 1) || {}
-      return word
-    },
-    users () {
-      return this.$store.state.users.users
-    },
-    emoji () {
-      return this.$store.state.instance.emoji || []
-    },
-    customEmoji () {
-      return this.$store.state.instance.customEmoji || []
-    },
     statusLength () {
       return this.newStatus.status.length
     },
@@ -174,53 +116,8 @@ const PostStatusForm = {
     }
   },
   methods: {
-    replace (replacement) {
-      this.newStatus.status = Completion.replaceWord(this.newStatus.status, this.wordAtCaret, replacement)
-      const el = this.$el.querySelector('textarea')
-      el.focus()
-      this.caret = 0
-    },
-    replaceCandidate (e) {
-      const len = this.candidates.length || 0
-      if (this.textAtCaret === ':' || e.ctrlKey) { return }
-      if (len > 0) {
-        e.preventDefault()
-        const candidate = this.candidates[this.highlighted]
-        const replacement = candidate.utf || (candidate.screen_name + ' ')
-        this.newStatus.status = Completion.replaceWord(this.newStatus.status, this.wordAtCaret, replacement)
-        const el = this.$el.querySelector('textarea')
-        el.focus()
-        this.caret = 0
-        this.highlighted = 0
-      }
-    },
-    cycleBackward (e) {
-      const len = this.candidates.length || 0
-      if (len > 0) {
-        e.preventDefault()
-        this.highlighted -= 1
-        if (this.highlighted < 0) {
-          this.highlighted = this.candidates.length - 1
-        }
-      } else {
-        this.highlighted = 0
-      }
-    },
-    cycleForward (e) {
-      const len = this.candidates.length || 0
-      if (len > 0) {
-        if (e.shiftKey) { return }
-        e.preventDefault()
-        this.highlighted += 1
-        if (this.highlighted >= len) {
-          this.highlighted = 0
-        }
-      } else {
-        this.highlighted = 0
-      }
-    },
-    setCaret ({target: {selectionStart}}) {
-      this.caret = selectionStart
+    postStatus () {
+      this.postStatus(this.newStatus)
     },
     postStatus (newStatus) {
       if (this.posting) { return }
@@ -305,18 +202,6 @@ const PostStatusForm = {
     fileDrag (e) {
       e.dataTransfer.dropEffect = 'copy'
     },
-    resize (e) {
-      const target = e.target || e
-      if (!(target instanceof window.Element)) { return }
-      const vertPadding = Number(window.getComputedStyle(target)['padding-top'].substr(0, 1)) +
-            Number(window.getComputedStyle(target)['padding-bottom'].substr(0, 1))
-      // Auto is needed to make textbox shrink when removing lines
-      target.style.height = 'auto'
-      target.style.height = `${target.scrollHeight - vertPadding}px`
-      if (target.value === '') {
-        target.style.height = null
-      }
-    },
     clearError () {
       this.error = null
     },
diff --git a/src/components/post_status_form/post_status_form.vue b/src/components/post_status_form/post_status_form.vue
index 6ed5d92e..ac5f5566 100644
--- a/src/components/post_status_form/post_status_form.vue
+++ b/src/components/post_status_form/post_status_form.vue
@@ -16,22 +16,14 @@
         :placeholder="$t('post_status.content_warning')"
         v-model="newStatus.spoilerText"
         class="form-cw">
-      <textarea
-        ref="textarea"
-        @click="setCaret"
-        @keyup="setCaret" v-model="newStatus.status" :placeholder="$t('post_status.default')" rows="1" class="form-control"
-        @keydown.down="cycleForward"
-        @keydown.up="cycleBackward"
-        @keydown.shift.tab="cycleBackward"
-        @keydown.tab="cycleForward"
-        @keydown.enter="replaceCandidate"
-        @keydown.meta.enter="postStatus(newStatus)"
-        @keyup.ctrl.enter="postStatus(newStatus)"
-        @drop="fileDrop"
-        @dragover.prevent="fileDrag"
-        @input="resize"
-        @paste="paste">
-      </textarea>
+      <auto-complete-input v-model="newStatus.status"
+        :classObj="{ 'form-control': true }"
+        :autoResize="true"
+        :drop="fileDrop"
+        :dragoverPrevent="fileDrag"
+        :paste="paste"
+        :keydownMetaEnter="postStatus"
+        :keyupCtrlEnter="postStatus"/>
       <div class="visibility-tray">
         <span class="text-format" v-if="formattingOptionsEnabled">
           <label for="post-content-type" class="select">
@@ -52,17 +44,6 @@
         </div>
       </div>
     </div>
-    <div style="position:relative;" v-if="candidates">
-        <div class="autocomplete-panel">
-          <div v-for="candidate in candidates" @click="replace(candidate.utf || (candidate.screen_name + ' '))">
-            <div class="autocomplete" :class="{ highlighted: candidate.highlighted }">
-              <span v-if="candidate.img"><img :src="candidate.img"></img></span>
-              <span v-else>{{candidate.utf}}</span>
-              <span>{{candidate.screen_name}}<small>{{candidate.name}}</small></span>
-            </div>
-          </div>
-        </div>
-      </div>
       <div class='form-bottom'>
         <media-upload ref="mediaUpload" @uploading="disableSubmit" @uploaded="addMediaFile" @upload-failed="uploadFailed" :drop-files="dropFiles"></media-upload>