Merge remote-tracking branch 'upstream/develop' into docs

* upstream/develop: (193 commits)
  fix user avatar fallback logic
  remove dead code
  make bio textarea resizable vertically only
  remove dead code
  remove dead code
  fix crazy watch logic in conversation
  show three dot button only if needed
  hide mute conversation button to guests
  update keyBy
  generate idObj at timeline level
  fix pin showing logic in conversation
  Show a message when JS is disabled
  Initialize chat only if user is logged in and it wasn't initialized before
  i18n/Update Japanese
  i18n/Update pedantic Japanese
  sync profile tab state with location query
  refactor TabSwitcher
  use better name of controlled prop
  fix potential bug to render active tab in controlled way
  remove unused param
  ...

4 files changed, 530 insertions, 0 deletions

diff --git a/src/components/poll/poll.js b/src/components/poll/poll.js
new file mode 100644
index 00000000..98db5582
--- /dev/null
+++ b/src/components/poll/poll.js
@@ -0,0 +1,112 @@
+import Timeago from '../timeago/timeago.vue'
+import { forEach, map } from 'lodash'
+
+export default {
+  name: 'Poll',
+  props: ['basePoll'],
+  components: { Timeago },
+  data () {
+    return {
+      loading: false,
+      choices: []
+    }
+  },
+  created () {
+    if (!this.$store.state.polls.pollsObject[this.pollId]) {
+      this.$store.dispatch('mergeOrAddPoll', this.basePoll)
+    }
+    this.$store.dispatch('trackPoll', this.pollId)
+  },
+  destroyed () {
+    this.$store.dispatch('untrackPoll', this.pollId)
+  },
+  computed: {
+    pollId () {
+      return this.basePoll.id
+    },
+    poll () {
+      const storePoll = this.$store.state.polls.pollsObject[this.pollId]
+      return storePoll || {}
+    },
+    options () {
+      return (this.poll && this.poll.options) || []
+    },
+    expiresAt () {
+      return (this.poll && this.poll.expires_at) || 0
+    },
+    expired () {
+      return (this.poll && this.poll.expired) || false
+    },
+    loggedIn () {
+      return this.$store.state.users.currentUser
+    },
+    showResults () {
+      return this.poll.voted || this.expired || !this.loggedIn
+    },
+    totalVotesCount () {
+      return this.poll.votes_count
+    },
+    containerClass () {
+      return {
+        loading: this.loading
+      }
+    },
+    choiceIndices () {
+      // Convert array of booleans into an array of indices of the
+      // items that were 'true', so [true, false, false, true] becomes
+      // [0, 3].
+      return this.choices
+        .map((entry, index) => entry && index)
+        .filter(value => typeof value === 'number')
+    },
+    isDisabled () {
+      const noChoice = this.choiceIndices.length === 0
+      return this.loading || noChoice
+    }
+  },
+  methods: {
+    percentageForOption (count) {
+      return this.totalVotesCount === 0 ? 0 : Math.round(count / this.totalVotesCount * 100)
+    },
+    resultTitle (option) {
+      return `${option.votes_count}/${this.totalVotesCount} ${this.$t('polls.votes')}`
+    },
+    fetchPoll () {
+      this.$store.dispatch('refreshPoll', { id: this.statusId, pollId: this.poll.id })
+    },
+    activateOption (index) {
+      // forgive me father: doing checking the radio/checkboxes
+      // in code because of customized input elements need either
+      // a) an extra element for the actual graphic, or b) use a
+      // pseudo element for the label. We use b) which mandates
+      // using "for" and "id" matching which isn't nice when the
+      // same poll appears multiple times on the site (notifs and
+      // timeline for example). With code we can make sure it just
+      // works without altering the pseudo element implementation.
+      const allElements = this.$el.querySelectorAll('input')
+      const clickedElement = this.$el.querySelector(`input[value="${index}"]`)
+      if (this.poll.multiple) {
+        // Checkboxes, toggle only the clicked one
+        clickedElement.checked = !clickedElement.checked
+      } else {
+        // Radio button, uncheck everything and check the clicked one
+        forEach(allElements, element => { element.checked = false })
+        clickedElement.checked = true
+      }
+      this.choices = map(allElements, e => e.checked)
+    },
+    optionId (index) {
+      return `poll${this.poll.id}-${index}`
+    },
+    vote () {
+      if (this.choiceIndices.length === 0) return
+      this.loading = true
+      this.$store.dispatch(
+        'votePoll',
+        { id: this.statusId, pollId: this.poll.id, choices: this.choiceIndices }
+      ).then(poll => {
+        this.loading = false
+      })
+    }
+  }
+}
diff --git a/src/components/poll/poll.vue b/src/components/poll/poll.vue
new file mode 100644
index 00000000..db8e33b3
--- /dev/null
+++ b/src/components/poll/poll.vue
@@ -0,0 +1,134 @@
+<template>
+  <div
+    class="poll"
+    :class="containerClass"
+  >
+    <div
+      v-for="(option, index) in options"
+      :key="index"
+      class="poll-option"
+    >
+      <div
+        v-if="showResults"
+        :title="resultTitle(option)"
+        class="option-result"
+      >
+        <div class="option-result-label">
+          <span class="result-percentage">
+            {{ percentageForOption(option.votes_count) }}%
+          </span>
+          <span>{{ option.title }}</span>
+        </div>
+        <div
+          class="result-fill"
+          :style="{ 'width': `${percentageForOption(option.votes_count)}%` }"
+        />
+      </div>
+      <div
+        v-else
+        @click="activateOption(index)"
+      >
+        <input
+          v-if="poll.multiple"
+          type="checkbox"
+          :disabled="loading"
+          :value="index"
+        >
+        <input
+          v-else
+          type="radio"
+          :disabled="loading"
+          :value="index"
+        >
+        <label class="option-vote">
+          <div>{{ option.title }}</div>
+        </label>
+      </div>
+    </div>
+    <div class="footer faint">
+      <button
+        v-if="!showResults"
+        class="btn btn-default poll-vote-button"
+        type="button"
+        :disabled="isDisabled"
+        @click="vote"
+      >
+        {{ $t('polls.vote') }}
+      </button>
+      <div class="total">
+        {{ totalVotesCount }} {{ $t("polls.votes") }}&nbsp;·&nbsp;
+      </div>
+      <i18n :path="expired ? 'polls.expired' : 'polls.expires_in'">
+        <Timeago
+          :time="expiresAt"
+          :auto-update="60"
+          :now-threshold="0"
+        />
+      </i18n>
+    </div>
+  </div>
+</template>
+
+<script src="./poll.js"></script>
+
+<style lang="scss">
+@import '../../_variables.scss';
+
+.poll {
+  .votes {
+    display: flex;
+    flex-direction: column;
+    margin: 0 0 0.5em;
+  }
+  .poll-option {
+    margin: 0.75em 0.5em;
+  }
+  .option-result {
+    height: 100%;
+    display: flex;
+    flex-direction: row;
+    position: relative;
+    color: $fallback--lightText;
+    color: var(--lightText, $fallback--lightText);
+  }
+  .option-result-label {
+    display: flex;
+    align-items: center;
+    padding: 0.1em 0.25em;
+    z-index: 1;
+  }
+  .result-percentage {
+    width: 3.5em;
+    flex-shrink: 0;
+  }
+  .result-fill {
+    height: 100%;
+    position: absolute;
+    background-color: $fallback--lightBg;
+    background-color: var(--linkBg, $fallback--lightBg);
+    border-radius: $fallback--panelRadius;
+    border-radius: var(--panelRadius, $fallback--panelRadius);
+    top: 0;
+    left: 0;
+    transition: width 0.5s;
+  }
+  .option-vote {
+    display: flex;
+    align-items: center;
+  }
+  input {
+    width: 3.5em;
+  }
+  .footer {
+    display: flex;
+    align-items: center;
+  }
+  &.loading * {
+    cursor: progress;
+  }
+  .poll-vote-button {
+    padding: 0 0.5em;
+    margin-right: 0.5em;
+  }
+}
+</style>
diff --git a/src/components/poll/poll_form.js b/src/components/poll/poll_form.js
new file mode 100644
index 00000000..c0c1ccf7
--- /dev/null
+++ b/src/components/poll/poll_form.js
@@ -0,0 +1,121 @@
+import * as DateUtils from 'src/services/date_utils/date_utils.js'
+import { uniq } from 'lodash'
+
+export default {
+  name: 'PollForm',
+  props: ['visible'],
+  data: () => ({
+    pollType: 'single',
+    options: ['', ''],
+    expiryAmount: 10,
+    expiryUnit: 'minutes'
+  }),
+  computed: {
+    pollLimits () {
+      return this.$store.state.instance.pollLimits
+    },
+    maxOptions () {
+      return this.pollLimits.max_options
+    },
+    maxLength () {
+      return this.pollLimits.max_option_chars
+    },
+    expiryUnits () {
+      const allUnits = ['minutes', 'hours', 'days']
+      const expiry = this.convertExpiryFromUnit
+      return allUnits.filter(
+        unit => this.pollLimits.max_expiration >= expiry(unit, 1)
+      )
+    },
+    minExpirationInCurrentUnit () {
+      return Math.ceil(
+        this.convertExpiryToUnit(
+          this.expiryUnit,
+          this.pollLimits.min_expiration
+        )
+      )
+    },
+    maxExpirationInCurrentUnit () {
+      return Math.floor(
+        this.convertExpiryToUnit(
+          this.expiryUnit,
+          this.pollLimits.max_expiration
+        )
+      )
+    }
+  },
+  methods: {
+    clear () {
+      this.pollType = 'single'
+      this.options = ['', '']
+      this.expiryAmount = 10
+      this.expiryUnit = 'minutes'
+    },
+    nextOption (index) {
+      const element = this.$el.querySelector(`#poll-${index + 1}`)
+      if (element) {
+        element.focus()
+      } else {
+        // Try adding an option and try focusing on it
+        const addedOption = this.addOption()
+        if (addedOption) {
+          this.$nextTick(function () {
+            this.nextOption(index)
+          })
+        }
+      }
+    },
+    addOption () {
+      if (this.options.length < this.maxOptions) {
+        this.options.push('')
+        return true
+      }
+      return false
+    },
+    deleteOption (index, event) {
+      if (this.options.length > 2) {
+        this.options.splice(index, 1)
+      }
+    },
+    convertExpiryToUnit (unit, amount) {
+      // Note: we want seconds and not milliseconds
+      switch (unit) {
+        case 'minutes': return (1000 * amount) / DateUtils.MINUTE
+        case 'hours': return (1000 * amount) / DateUtils.HOUR
+        case 'days': return (1000 * amount) / DateUtils.DAY
+      }
+    },
+    convertExpiryFromUnit (unit, amount) {
+      // Note: we want seconds and not milliseconds
+      switch (unit) {
+        case 'minutes': return 0.001 * amount * DateUtils.MINUTE
+        case 'hours': return 0.001 * amount * DateUtils.HOUR
+        case 'days': return 0.001 * amount * DateUtils.DAY
+      }
+    },
+    expiryAmountChange () {
+      this.expiryAmount =
+        Math.max(this.minExpirationInCurrentUnit, this.expiryAmount)
+      this.expiryAmount =
+        Math.min(this.maxExpirationInCurrentUnit, this.expiryAmount)
+      this.updatePollToParent()
+    },
+    updatePollToParent () {
+      const expiresIn = this.convertExpiryFromUnit(
+        this.expiryUnit,
+        this.expiryAmount
+      )
+
+      const options = uniq(this.options.filter(option => option !== ''))
+      if (options.length < 2) {
+        this.$emit('update-poll', { error: this.$t('polls.not_enough_options') })
+        return
+      }
+      this.$emit('update-poll', {
+        options,
+        multiple: this.pollType === 'multiple',
+        expiresIn
+      })
+    }
+  }
+}
diff --git a/src/components/poll/poll_form.vue b/src/components/poll/poll_form.vue
new file mode 100644
index 00000000..d53f3837
--- /dev/null
+++ b/src/components/poll/poll_form.vue
@@ -0,0 +1,163 @@
+<template>
+  <div
+    v-if="visible"
+    class="poll-form"
+  >
+    <div
+      v-for="(option, index) in options"
+      :key="index"
+      class="poll-option"
+    >
+      <div class="input-container">
+        <input
+          :id="`poll-${index}`"
+          v-model="options[index]"
+          class="poll-option-input"
+          type="text"
+          :placeholder="$t('polls.option')"
+          :maxlength="maxLength"
+          @change="updatePollToParent"
+          @keydown.enter.stop.prevent="nextOption(index)"
+        >
+      </div>
+      <div
+        v-if="options.length > 2"
+        class="icon-container"
+      >
+        <i
+          class="icon-cancel"
+          @click="deleteOption(index)"
+        />
+      </div>
+    </div>
+    <a
+      v-if="options.length < maxOptions"
+      class="add-option faint"
+      @click="addOption"
+    >
+      <i class="icon-plus" />
+      {{ $t("polls.add_option") }}
+    </a>
+    <div class="poll-type-expiry">
+      <div
+        class="poll-type"
+        :title="$t('polls.type')"
+      >
+        <label
+          for="poll-type-selector"
+          class="select"
+        >
+          <select
+            v-model="pollType"
+            class="select"
+            @change="updatePollToParent"
+          >
+            <option value="single">{{ $t('polls.single_choice') }}</option>
+            <option value="multiple">{{ $t('polls.multiple_choices') }}</option>
+          </select>
+          <i class="icon-down-open" />
+        </label>
+      </div>
+      <div
+        class="poll-expiry"
+        :title="$t('polls.expiry')"
+      >
+        <input
+          v-model="expiryAmount"
+          type="number"
+          class="expiry-amount hide-number-spinner"
+          :min="minExpirationInCurrentUnit"
+          :max="maxExpirationInCurrentUnit"
+          @change="expiryAmountChange"
+        >
+        <label class="expiry-unit select">
+          <select
+            v-model="expiryUnit"
+            @change="expiryAmountChange"
+          >
+            <option
+              v-for="unit in expiryUnits"
+              :key="unit"
+              :value="unit"
+            >
+              {{ $t(`time.${unit}_short`, ['']) }}
+            </option>
+          </select>
+          <i class="icon-down-open" />
+        </label>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script src="./poll_form.js"></script>
+
+<style lang="scss">
+@import '../../_variables.scss';
+
+.poll-form {
+  display: flex;
+  flex-direction: column;
+  padding: 0 0.5em 0.5em;
+
+  .add-option {
+    align-self: flex-start;
+    padding-top: 0.25em;
+    cursor: pointer;
+  }
+
+  .poll-option {
+    display: flex;
+    align-items: baseline;
+    justify-content: space-between;
+    margin-bottom: 0.25em;
+  }
+
+  .input-container {
+    width: 100%;
+    input {
+      // Hack: dodge the floating X icon
+      padding-right: 2.5em;
+      width: 100%;
+    }
+  }
+
+  .icon-container {
+    // Hack: Move the icon over the input box
+    width: 2em;
+    margin-left: -2em;
+    z-index: 1;
+  }
+
+  .poll-type-expiry {
+    margin-top: 0.5em;
+    display: flex;
+    width: 100%;
+  }
+
+  .poll-type {
+    margin-right: 0.75em;
+    flex: 1 1 60%;
+    .select {
+      border: none;
+      box-shadow: none;
+      background-color: transparent;
+    }
+  }
+
+  .poll-expiry {
+    display: flex;
+
+    .expiry-amount {
+      width: 3em;
+      text-align: right;
+    }
+
+    .expiry-unit {
+      border: none;
+      box-shadow: none;
+      background-color: transparent;
+    }
+  }
+}
+</style>