<?php

final class DifferentialChangesetDetailView extends AphrontView {

  private $changeset;
  private $buttons = array();
  private $editable;
  private $symbolIndex;
  private $id;
  private $vsChangesetID;

  public function setChangeset($changeset) {
    $this->changeset = $changeset;
    return $this;
  }

  public function addButton($button) {
    $this->buttons[] = $button;
    return $this;
  }

  public function setEditable($editable) {
    $this->editable = $editable;
    return $this;
  }

  public function setSymbolIndex($symbol_index) {
    $this->symbolIndex = $symbol_index;
    return $this;
  }

  public function getID() {
    if (!$this->id) {
      $this->id = celerity_generate_unique_node_id();
    }
    return $this->id;
  }

  public function setVsChangesetID($vs_changeset_id) {
    $this->vsChangesetID = $vs_changeset_id;
    return $this;
  }

  public function getVsChangesetID() {
    return $this->vsChangesetID;
  }

  public function render() {
    require_celerity_resource('differential-changeset-view-css');
    require_celerity_resource('syntax-highlighting-css');

    Javelin::initBehavior('phabricator-oncopy', array());

    $changeset = $this->changeset;
    $class = 'differential-changeset';
    if (!$this->editable) {
      $class .= ' differential-changeset-immutable';
    }

    $buttons = null;
    if ($this->buttons) {
      $buttons = phutil_tag(
        'div',
        array(
          'class' => 'differential-changeset-buttons',
        ),
        $this->buttons);
    }

    $id = $this->getID();

    if ($this->symbolIndex) {
      Javelin::initBehavior(
        'repository-crossreference',
        array(
          'container' => $id,
        ) + $this->symbolIndex);
    }

    $display_filename = $changeset->getDisplayFilename();

    return javelin_tag(
      'div',
      array(
        'sigil' => 'differential-changeset',
        'meta'  => array(
          'left'  => nonempty(
            $this->getVsChangesetID(),
            $this->changeset->getID()),
          'right' => $this->changeset->getID(),
        ),
        'class' => $class,
        'id'    => $id,
      ),
      array(
        id(new PhabricatorAnchorView())
          ->setAnchorName($changeset->getAnchorName())
          ->setNavigationMarker(true)
          ->render(),
        $buttons,
        phutil_tag('h1', array(), $display_filename),
        phutil_tag('div', array('style' => 'clear: both'), ''),
        $this->renderChildren(),
      ));
  }

}