2 files changed, 225 insertions, 0 deletions
diff --git a/src/components/thread_tree/thread_tree.js b/src/components/thread_tree/thread_tree.js
new file mode 100644
index 00000000..71e63725
--- /dev/null
+++ b/src/components/thread_tree/thread_tree.js
@@ -0,0 +1,90 @@
+import Status from '../status/status.vue'
+
+import { library } from '@fortawesome/fontawesome-svg-core'
+import {
+  faAngleDoubleDown,
+  faAngleDoubleRight
+} from '@fortawesome/free-solid-svg-icons'
+
+library.add(
+  faAngleDoubleDown,
+  faAngleDoubleRight
+)
+
+const ThreadTree = {
+  components: {
+    Status
+  },
+  name: 'ThreadTree',
+  props: {
+    depth: Number,
+    status: Object,
+    inProfile: Boolean,
+    conversation: Array,
+    collapsable: Boolean,
+    isExpanded: Boolean,
+    pinnedStatusIdsObject: Object,
+    profileUserId: String,
+
+    focused: Function,
+    highlight: String,
+    getReplies: Function,
+    setHighlight: Function,
+    toggleExpanded: Function,
+
+    simple: Boolean,
+    // to control display of the whole thread forest
+    toggleThreadDisplay: Function,
+    threadDisplayStatus: Object,
+    showThreadRecursively: Function,
+    totalReplyCount: Object,
+    totalReplyDepth: Object,
+    statusContentProperties: Object,
+    setStatusContentProperty: Function,
+    toggleStatusContentProperty: Function,
+    dive: Function
+  },
+  computed: {
+    suspendable () {
+      const selfSuspendable = this.$refs.statusComponent ? this.$refs.statusComponent.suspendable : true
+      if (this.$refs.childComponent) {
+        return selfSuspendable && this.$refs.childComponent.every(s => s.suspendable)
+      }
+      return selfSuspendable
+    },
+    reverseLookupTable () {
+      return this.conversation.reduce((table, status, index) => {
+        table[status.id] = index
+        return table
+      }, {})
+    },
+    currentReplies () {
+      return this.getReplies(this.status.id).map(({ id }) => this.statusById(id))
+    },
+    threadShowing () {
+      return this.threadDisplayStatus[this.status.id] === 'showing'
+    },
+    currentProp () {
+      return this.statusContentProperties[this.status.id]
+    }
+  },
+  methods: {
+    statusById (id) {
+      return this.conversation[this.reverseLookupTable[id]]
+    },
+    collapseThread () {
+    },
+    showThread () {
+    },
+    showAllSubthreads () {
+    },
+    toggleCurrentProp (name) {
+      this.toggleStatusContentProperty(this.status.id, name)
+    },
+    setCurrentProp (name, newVal) {
+      this.setStatusContentProperty(this.status.id, name)
+    }
+  }
+}
+
+export default ThreadTree
diff --git a/src/components/thread_tree/thread_tree.vue b/src/components/thread_tree/thread_tree.vue
new file mode 100644
index 00000000..c6fffc71
--- /dev/null
+++ b/src/components/thread_tree/thread_tree.vue
@@ -0,0 +1,135 @@
+<template>
+  <article class="thread-tree">
+    <status
+      :key="status.id"
+      ref="statusComponent"
+      :inline-expanded="collapsable && isExpanded"
+      :statusoid="status"
+      :expandable="!isExpanded"
+      :show-pinned="pinnedStatusIdsObject && pinnedStatusIdsObject[status.id]"
+      :focused="focused(status.id)"
+      :in-conversation="isExpanded"
+      :highlight="highlight"
+      :replies="getReplies(status.id)"
+      :in-profile="inProfile"
+      :profile-user-id="profileUserId"
+      class="conversation-status conversation-status-treeview status-fadein panel-body"
+
+      :simple-tree="simple"
+      :controlled-thread-display-status="threadDisplayStatus[status.id]"
+      :controlled-toggle-thread-display="() => toggleThreadDisplay(status.id)"
+
+      :controlled-showing-tall="currentProp.showingTall"
+      :controlled-expanding-subject="currentProp.expandingSubject"
+      :controlled-showing-long-subject="currentProp.showingLongSubject"
+      :controlled-replying="currentProp.replying"
+      :controlled-media-playing="currentProp.mediaPlaying"
+      :controlled-toggle-showing-tall="() => toggleCurrentProp('showingTall')"
+      :controlled-toggle-expanding-subject="() => toggleCurrentProp('expandingSubject')"
+      :controlled-toggle-showing-long-subject="() => toggleCurrentProp('showingLongSubject')"
+      :controlled-toggle-replying="() => toggleCurrentProp('replying')"
+      :controlled-set-media-playing="(newVal) => setCurrentProp('mediaPlaying', newVal)"
+      :dive="dive ? () => dive(status.id) : undefined"
+
+      @goto="setHighlight"
+      @toggleExpanded="toggleExpanded"
+    />
+    <div
+      v-if="currentReplies.length && threadShowing"
+      class="thread-tree-replies"
+    >
+      <thread-tree
+        v-for="replyStatus in currentReplies"
+        :key="replyStatus.id"
+        ref="childComponent"
+        :depth="depth + 1"
+        :status="replyStatus"
+
+        :in-profile="inProfile"
+        :conversation="conversation"
+        :collapsable="collapsable"
+        :is-expanded="isExpanded"
+        :pinned-status-ids-object="pinnedStatusIdsObject"
+        :profile-user-id="profileUserId"
+
+        :focused="focused"
+        :get-replies="getReplies"
+        :highlight="highlight"
+        :set-highlight="setHighlight"
+        :toggle-expanded="toggleExpanded"
+
+        :simple="simple"
+        :toggle-thread-display="toggleThreadDisplay"
+        :thread-display-status="threadDisplayStatus"
+        :show-thread-recursively="showThreadRecursively"
+        :total-reply-count="totalReplyCount"
+        :total-reply-depth="totalReplyDepth"
+        :status-content-properties="statusContentProperties"
+        :set-status-content-property="setStatusContentProperty"
+        :toggle-status-content-property="toggleStatusContentProperty"
+        :dive="dive"
+      />
+    </div>
+    <div
+      v-if="currentReplies.length && !threadShowing"
+      class="thread-tree-replies thread-tree-replies-hidden"
+    >
+      <i18n-t
+        v-if="simple"
+        scope="global"
+        tag="button"
+        keypath="status.thread_follow_with_icon"
+        class="button-unstyled -link thread-tree-show-replies-button"
+        @click.prevent="dive(status.id)"
+      >
+        <template #icon>
+          <FAIcon
+            icon="angle-double-right"
+          />
+        </template>
+        <template #text>
+          <span>
+            {{ $tc('status.thread_follow', totalReplyCount[status.id], { numStatus: totalReplyCount[status.id] }) }}
+          </span>
+        </template>
+      </i18n-t>
+      <i18n-t
+        v-else
+        scope="global"
+        tag="button"
+        keypath="status.thread_show_full_with_icon"
+        class="button-unstyled -link thread-tree-show-replies-button"
+        @click.prevent="showThreadRecursively(status.id)"
+      >
+        <template #icon>
+          <FAIcon
+            icon="angle-double-down"
+          />
+        </template>
+        <template #text>
+          <span>
+            {{ $tc('status.thread_show_full', totalReplyCount[status.id], { numStatus: totalReplyCount[status.id], depth: totalReplyDepth[status.id] }) }}
+          </span>
+        </template>
+      </i18n-t>
+    </div>
+  </article>
+</template>
+
+<script src="./thread_tree.js"></script>
+
+<style lang="scss">
+@import '../../_variables.scss';
+.thread-tree-replies {
+  margin-left: var(--status-margin, $status-margin);
+  border-left: 2px solid var(--border, $fallback--border);
+}
+
+.thread-tree-replies-hidden {
+  padding: var(--status-margin, $status-margin);
+  /* Make the button stretch along the whole row */
+  display: flex;
+  align-items: stretch;
+  flex-direction: column;
+}
+</style>