Add DM conversations mode similar to upstream

app/javascript/flavours/glitch/features/direct_timeline/components/conversation.js

@@ -0,0 +1,64 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import StatusContainer from 'flavours/glitch/containers/status_container';
+
+export default class Conversation extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    conversationId: PropTypes.string.isRequired,
+    accounts: ImmutablePropTypes.list.isRequired,
+    lastStatusId: PropTypes.string,
+    unread:PropTypes.bool.isRequired,
+    onMoveUp: PropTypes.func,
+    onMoveDown: PropTypes.func,
+    markRead: PropTypes.func.isRequired,
+  };
+
+  handleClick = () => {
+    if (!this.context.router) {
+      return;
+    }
+
+    const { lastStatusId, unread, markRead } = this.props;
+
+    if (unread) {
+      markRead();
+    }
+
+    this.context.router.history.push(`/statuses/${lastStatusId}`);
+  }
+
+  handleHotkeyMoveUp = () => {
+    this.props.onMoveUp(this.props.conversationId);
+  }
+
+  handleHotkeyMoveDown = () => {
+    this.props.onMoveDown(this.props.conversationId);
+  }
+
+  render () {
+    const { accounts, lastStatusId, unread } = this.props;
+
+    if (lastStatusId === null) {
+      return null;
+    }
+
+    return (
+      <StatusContainer
+        id={lastStatusId}
+        unread={unread}
+        otherAccounts={accounts}
+        onMoveUp={this.handleHotkeyMoveUp}
+        onMoveDown={this.handleHotkeyMoveDown}
+        onClick={this.handleClick}
+      />
+    );
+  }
+
+}

app/javascript/flavours/glitch/features/direct_timeline/components/conversations_list.js

@@ -0,0 +1,73 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ConversationContainer from '../containers/conversation_container';
+import ScrollableList from 'flavours/glitch/components/scrollable_list';
+import { debounce } from 'lodash';
+
+export default class ConversationsList extends ImmutablePureComponent {
+
+  static propTypes = {
+    conversations: ImmutablePropTypes.list.isRequired,
+    hasMore: PropTypes.bool,
+    isLoading: PropTypes.bool,
+    onLoadMore: PropTypes.func,
+  };
+
+  getCurrentIndex = id => this.props.conversations.findIndex(x => x.get('id') === id)
+
+  handleMoveUp = id => {
+    const elementIndex = this.getCurrentIndex(id) - 1;
+    this._selectChild(elementIndex, true);
+  }
+
+  handleMoveDown = id => {
+    const elementIndex = this.getCurrentIndex(id) + 1;
+    this._selectChild(elementIndex, false);
+  }
+
+  _selectChild (index, align_top) {
+    const container = this.node.node;
+    const element = container.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
+
+    if (element) {
+      if (align_top && container.scrollTop > element.offsetTop) {
+        element.scrollIntoView(true);
+      } else if (!align_top && container.scrollTop + container.clientHeight < element.offsetTop + element.offsetHeight) {
+        element.scrollIntoView(false);
+      }
+      element.focus();
+    }
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  handleLoadOlder = debounce(() => {
+    const last = this.props.conversations.last();
+
+    if (last && last.get('last_status')) {
+      this.props.onLoadMore(last.get('last_status'));
+    }
+  }, 300, { leading: true })
+
+  render () {
+    const { conversations, onLoadMore, ...other } = this.props;
+
+    return (
+      <ScrollableList {...other} onLoadMore={onLoadMore && this.handleLoadOlder} scrollKey='direct' ref={this.setRef}>
+        {conversations.map(item => (
+          <ConversationContainer
+            key={item.get('id')}
+            conversationId={item.get('id')}
+            onMoveUp={this.handleMoveUp}
+            onMoveDown={this.handleMoveDown}
+          />
+        ))}
+      </ScrollableList>
+    );
+  }
+
+}