discourse/app/assets/javascripts/dialog-holder/addon/components/dialog-holder.hbs

<div id="dialog-holder" class="dialog-container {{this.dialog.class}}" aria-labelledby={{this.dialog.titleElementId}} aria-hidden="true">
  <div class="dialog-overlay" data-a11y-dialog-hide></div>

  {{#if this.dialog.type}}
    <div class="dialog-content" role="document">
      {{#if this.dialog.title}}
        <div class="dialog-header">
          <h3 id={{this.dialog.titleElementId}}>{{this.dialog.title}}</h3>
          <DButton @icon="times" @action={{action this.dialog.cancel}} @class="btn-flat dialog-close close" @title="modal.close" />
        </div>
      {{/if}}

      {{#if (or this.dialog.message this.dialog.confirmPhrase)}}
        <div class="dialog-body">
          {{#if this.dialog.message}}
            <p>{{this.dialog.message}}</p>
          {{/if}}
          {{#if this.dialog.confirmPhrase}}
            <TextField @value={{this.dialog.confirmPhraseInput}} {{on "input" this.dialog.onConfirmPhraseInput}} @id="confirm-phrase" @autocorrect="off" @autocapitalize="off" />
          {{/if}}
        </div>
      {{/if}}

      {{#if (notEq this.dialog.type "notice")}}
        <div class="dialog-footer">
          {{#each this.dialog.buttons as |button|}}
            <DButton @icon={{button.icon}} @class={{button.class}} @action={{action "handleButtonAction" button}} @translatedLabel={{button.label}} />
          {{else}}
            <DButton @class={{this.dialog.confirmButtonClass}} @disabled={{this.dialog.confirmButtonDisabled}} @action={{this.dialog.didConfirmWrapped}} @icon={{this.dialog.confirmButtonIcon}} @label={{this.dialog.confirmButtonLabel}} />
            {{#if this.dialog.shouldDisplayCancel}}
              <DButton @class={{this.dialog.cancelButtonClass}} @action={{this.dialog.cancel}} @label={{this.dialog.cancelButtonLabel}} />
            {{/if}}
          {{/each}}
        </div>
      {{/if}}
    </div>
  {{/if}}
</div>