discourse/app/assets/javascripts/discourse/raw-views/topic-status.js.es6

import computed from 'ember-addons/ember-computed-decorators';

export default Ember.Object.extend({
  showDefault: null,

  @computed('defaultIcon')
  renderDiv(defaultIcon) {
    return (defaultIcon || this.get('statuses').length > 0) && !this.noDiv;
  },

  @computed
  statuses() {
    const topic = this.get("topic");
    const results =  [];

    // TODO, custom statuses? via override?
    if (topic.get('is_warning')) {
      results.push({icon: 'envelope', key: 'warning'});
    }

    if (topic.get('bookmarked')) {
      const postNumbers = topic.get('bookmarked_post_numbers');
      let url = topic.get('url');
      let extraClasses = "";
      if (postNumbers && postNumbers[0] > 1) {
        url += '/' + postNumbers[0];
      } else {
        extraClasses = "op-bookmark";
      }

      results.push({ extraClasses, icon: 'bookmark', key: 'bookmarked', href: url });
    }

    if (topic.get('closed') && topic.get('archived')) {
      results.push({icon: 'lock', key: 'locked_and_archived'});
    } else if (topic.get('closed')) {
      results.push({icon: 'lock', key: 'locked'});
    } else if (topic.get('archived')) {
      results.push({icon: 'lock', key: 'archived'});
    }

    if (topic.get('pinned')) {
      results.push({icon: 'thumb-tack', key: 'pinned'});
    }

    if (topic.get('unpinned')) {
      results.push({icon: 'thumb-tack unpinned', key: 'unpinned'});
    }

    if (topic.get('invisible')) {
      results.push({icon: 'eye-slash', key: 'invisible'});
    }

    results.forEach(result => {
      result.title = I18n.t(`topic_statuses.${result.key}.help`);
      if (!self.disableActions && (result.key === "pinned" ||result.key === "unpinned")) {
        result.openTag = 'a href';
        result.closeTag = 'a';
      } else {
        result.openTag = 'span';
        result.closeTag = 'span';
      }
    });

    let defaultIcon = this.get('defaultIcon');
    if (results.length === 0 && defaultIcon) {
      this.set('showDefault', defaultIcon);
    }

    return results;
  }
});