2 files changed, 171 insertions, 0 deletions
diff --git a/src/components/emoji-input/emoji-input.js b/src/components/emoji-input/emoji-input.js
new file mode 100644
index 00000000..a5bb6eaf
--- /dev/null
+++ b/src/components/emoji-input/emoji-input.js
@@ -0,0 +1,107 @@
+import Completion from '../../services/completion/completion.js'
+import { take, filter, map } from 'lodash'
+
+const EmojiInput = {
+  props: [
+    'value',
+    'placeholder',
+    'type',
+    'classname'
+  ],
+  data () {
+    return {
+      highlighted: 0,
+      caret: 0
+    }
+  },
+  computed: {
+    suggestions () {
+      const firstchar = this.textAtCaret.charAt(0)
+      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) => ({
+          shortcode: `:${shortcode}:`,
+          utf: utf || '',
+          // eslint-disable-next-line camelcase
+          img: utf ? '' : this.$store.state.instance.server + image_url,
+          highlighted: index === this.highlighted
+        }))
+      } else {
+        return false
+      }
+    },
+    textAtCaret () {
+      return (this.wordAtCaret || {}).word || ''
+    },
+    wordAtCaret () {
+      const word = Completion.wordAtPosition(this.value, this.caret - 1) || {}
+      return word
+    },
+    emoji () {
+      return this.$store.state.instance.emoji || []
+    },
+    customEmoji () {
+      return this.$store.state.instance.customEmoji || []
+    }
+  },
+  methods: {
+    replace (replacement) {
+      const newValue = Completion.replaceWord(this.value, this.wordAtCaret, replacement)
+      this.$emit('input', newValue)
+      this.caret = 0
+    },
+    replaceEmoji (e) {
+      const len = this.suggestions.length || 0
+      if (this.textAtCaret === ':' || e.ctrlKey) { return }
+      if (len > 0) {
+        e.preventDefault()
+        const emoji = this.suggestions[this.highlighted]
+        const replacement = emoji.utf || (emoji.shortcode + ' ')
+        const newValue = Completion.replaceWord(this.value, this.wordAtCaret, replacement)
+        this.$emit('input', newValue)
+        this.caret = 0
+        this.highlighted = 0
+      }
+    },
+    cycleBackward (e) {
+      const len = this.suggestions.length || 0
+      if (len > 0) {
+        e.preventDefault()
+        this.highlighted -= 1
+        if (this.highlighted < 0) {
+          this.highlighted = this.suggestions.length - 1
+        }
+      } else {
+        this.highlighted = 0
+      }
+    },
+    cycleForward (e) {
+      const len = this.suggestions.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
+      }
+    },
+    onKeydown (e) {
+      e.stopPropagation()
+    },
+    onInput (e) {
+      this.$emit('input', e.target.value)
+    },
+    setCaret ({target: {selectionStart}}) {
+      this.caret = selectionStart
+    }
+  }
+}
+
+export default EmojiInput
diff --git a/src/components/emoji-input/emoji-input.vue b/src/components/emoji-input/emoji-input.vue
new file mode 100644
index 00000000..338b77cd
--- /dev/null
+++ b/src/components/emoji-input/emoji-input.vue
@@ -0,0 +1,64 @@
+<template>
+  <div class="emoji-input">
+    <input
+      v-if="type !== 'textarea'"
+      :class="classname"
+      :type="type"
+      :value="value"
+      :placeholder="placeholder"
+      @input="onInput"
+      @click="setCaret"
+      @keyup="setCaret"
+      @keydown="onKeydown"
+      @keydown.down="cycleForward"
+      @keydown.up="cycleBackward"
+      @keydown.shift.tab="cycleBackward"
+      @keydown.tab="cycleForward"
+      @keydown.enter="replaceEmoji"
+    />
+    <textarea
+      v-else
+      :class="classname"
+      :value="value"
+      :placeholder="placeholder"
+      @input="onInput"
+      @click="setCaret"
+      @keyup="setCaret"
+      @keydown="onKeydown"
+      @keydown.down="cycleForward"
+      @keydown.up="cycleBackward"
+      @keydown.shift.tab="cycleBackward"
+      @keydown.tab="cycleForward"
+      @keydown.enter="replaceEmoji"
+    ></textarea>
+    <div class="autocomplete-panel" v-if="suggestions">
+      <div class="autocomplete-panel-body">
+        <div
+          v-for="(emoji, index) in suggestions"
+          :key="index"
+          @click="replace(emoji.utf || (emoji.shortcode + ' '))"
+          class="autocomplete-item"
+          :class="{ highlighted: emoji.highlighted }"
+        >
+          <span v-if="emoji.img">
+            <img :src="emoji.img" />
+          </span>
+          <span v-else>{{emoji.utf}}</span>
+          <span>{{emoji.shortcode}}</span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script src="./emoji-input.js"></script>
+
+<style lang="scss">
+@import '../../_variables.scss';
+
+.emoji-input {
+  .form-control {
+    width: 100%;
+  }
+}
+</style>