function views_gantt_plugin_style_gantt::render in Views Gantt 7

Same name and namespace in other branches

1. 7.2 views_gantt_plugin_style_gantt.inc \views_gantt_plugin_style_gantt::render()

Render the given style.

Overrides views_plugin_style::render

File

./views_gantt_plugin_style_gantt.inc, line 145

Contains the list style plugin.

Class

views_gantt_plugin_style_gantt

Style plugin to render Gantt charts.

Code

function render() {

  // Check for live preview.
  if (isset($this->view->live_preview)) {
    return t('Gantt Chart not compatible with live preview.');
  }
  $this
    ->options_fields();
  $this
    ->options_node();

  // Get project data.
  if (!$this
    ->get_project()) {
    return;
  }

  // Get array of tasks.
  foreach ($this->view->result as $row) {
    $this
      ->add_task($row);
  }
  foreach ($this->tasks as $key => $task) {
    $this
      ->load_missing_tasks($key);
    $this
      ->load_missing_values($key);
  }

  // Allow to alter tasks array before next modifications.
  drupal_alter('views_gantt_tasks_prerender', $this->tasks);

  // Remove tasks marked for deletion
  foreach ($this->tasks as $key => $value) {
    if ($this
      ->is_delete($key)) {
      unset($this->tasks[$key]);
    }
  }
  $this
    ->fill_child_ids();

  // Build hierarchical tree of tasks and fix incorrect values.
  $tree = $this
    ->build_tree($this->tasks);
  foreach ($tree as $key => $task) {
    $this
      ->check_date($task);
    $this
      ->check_duration($task);
    $this
      ->calculate_progress($task);
  }

  // Exclude incorrect tasks.
  foreach ($this->tasks as $key => $value) {
    $this
      ->check_predecessor($key);
    if (!$this
      ->is_correct($key)) {
      unset($this->tasks[$key]);
    }
  }

  // If there are no correct tasks.
  if (!$this->tasks) {
    drupal_set_message(t('There are no tasks that can be displayed in Gantt Chart.'), 'warning');
    return;
  }
  $this
    ->mark_modified_tasks();
  $this
    ->views_gantt_before_render();
  return parent::render();
}