outline_designer.module

<?php
// ELMS: Outline Designer API - Usability improvements for outline creation
// Copyright (C) 2008-2012  The Pennsylvania State University
//
// Bryan Ollendyke
// bto108@psu.edu
//
// Keith D. Bailey
// kdb163@psu.edu
//
// 12 Borland
// University Park,  PA 16802

/**
 * @file
 * API for implementation of the Outline Designer usability improvements.
 */


/**
 * Implements hook_permission().
 */
function outline_designer_permission() {
  return array(
    'use outline designer' => array(
      'title' => t('use outline designer'),
      'description' => t('Grant basic access to use the outline designer'),
    ),
  );
}

/**
 * Implements hook_menu().
 */
function outline_designer_menu() {
  $items = array();
  $items['outline_designer/ajax'] = array(
    'access arguments' => array('use outline designer'),
    'page callback' => '_outline_designer_ajax',
    'page arguments' => array(2, 3, 4, 5, 6, 7),
    'type' => MENU_CALLBACK,
  );
  $items['admin/config/content/outline_designer'] = array(
    'title' => 'Outline Designer',
    'description' => 'The Outline Designer settings allow you to associate icons to content types for use in structuring book content.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('outline_designer_settings'),
    'type' => MENU_NORMAL_ITEM,
    'access arguments' => array('administer site configuration'),
  );
  return $items;
}

/**
 * Helper function to generate scripts for a page.
 */
function _outline_designer_setup($ajax_path, $nid) {
  drupal_add_css(drupal_get_path('module', 'outline_designer') . '/css/outline_designer.css');
  drupal_add_js(drupal_get_path('module', 'outline_designer') . '/js/jquery.contextmenu.js');
  drupal_add_js(drupal_get_path('module', 'outline_designer') . '/js/outline_designer.js', array('scope' => 'footer'));
  // invoke implementation of ops javascript
  module_invoke_all('outline_designer_ops_js', $ajax_path, $nid);
}

/**
 * Implements hook_outline_designer_ops_js().
 */
function outline_designer_outline_designer_ops_js($ajax_path, $nid = NULL) {
  $purl = '';
  if (module_exists('purl')) {
    $options = array();
    // need to look for a group if it exists otherwise it should work fine
    if (arg(0) == 'admin') {
      $node = node_load($nid);
      purl_url_outbound_alter($purl, $options, '');
      $ajax_base_path = base_path() . $purl . $ajax_path;
      $node = node_load($nid);
      if (count($node->og_groups)) {
        $group = node_load(array_pop($node->og_groups));
        $ajax_base_path = base_path() . $group->purl . '/' . $ajax_path;
      }
      else {
        $ajax_base_path = base_path() . $ajax_path;
      }
    }
    else {
      purl_url_outbound_alter($purl, $options, '');
      $ajax_base_path = base_path() . $purl . $ajax_path;
    }
  }
  else {
    $ajax_base_path = base_path() . $ajax_path;
  }
  // pass variables to js
  $js_variables = array(
    'outline_designer' => array(
      'path' => base_path() . drupal_get_path('module', 'outline_designer') . '/',
      'theme' => variable_get('outline_designer_theme', 'vista'),
      'collapseToggle' => variable_get('outline_designer_collapse_toggle', 1),
      'collapseList' => array(),
      'token' => drupal_get_token(),
      'factor' => 1,
      'ajaxPath' => $ajax_base_path,
    ),
  );
  drupal_add_js($js_variables, "setting");
}
/**
 * Theme Callback: render the top buttons for outline designer ui.
 */
function theme_outline_designer_ui_prefix($variables) {
  $nid = $variables['nid'];
  $icon_path = $variables['icon_path'];
  $can_add = $variables['can_add'];
  $output = '<fieldset class="collapsible"><div>';
  // only append the add form if it is allowed
  if ($can_add) {
    $output .= '<div style="width:120px; float:left; height:30px; margin-right:6px;" class="context-menu context-menu-theme-' . variable_get('outline_designer_theme', 'vista') . '"><div title="Add Content" alt="Add Content" class="context-menu-item">
          <div style="background-image: url(' . $icon_path . 'add_content.png);" class="context-menu-item-inner" onclick="Drupal.settings.outline_designer.activeNid=' . $nid . ';Drupal.outline_designer.form_render(' . "'add_content'" . ');">
            ' . t('Add content') . '
          </div>
        </div>
      </div>';
  }
  $output .= '<div style="height:30px; float:left;">
        <a href="#" onclick="Drupal.outline_designer.scale(-1);" class="od-operation-icons">
          <img alt="' . t('Decrease interface') . '" title="' . t('Decrease interface') . '" src="' . $icon_path . 'text-decrease.png" />
        </a>
        <a href="#" onclick="Drupal.outline_designer.scale(1);" class="od-operation-icons">
          <img alt="' . t('Increase interface') . '" title="' . t('Increase interface') . '" src="' . $icon_path . 'text-increase.png" />
        </a>
        <a href="#" onclick="Drupal.outline_designer.scale(0);" class="od-operation-icons">
          <img alt="' . t('Reset interface') . '" title="' . t('Reset interface') . '" src="' . $icon_path . 'text-reset.png" />
        </a>
        <a href="#" onclick="Drupal.outline_designer.openAll();"  class="od-operation-icons">
          <img alt="' . t('Open all branches') . '" title="' . t('Open all branches') . '" src="' . $icon_path . 'open-all.png" />
        </a>
        <a href="#" onclick="Drupal.outline_designer.collapseAll();" class="od-operation-icons">
          <img alt="' . t('Close all branches') . '" title="' . t('Close all branches') . '" src="' . $icon_path . 'close-all.png" />
        </a>
      </div>
    </div>
  </fieldset>';
  return $output;
}

/**
 * Helper function to make outline designer settings more obvious.
 */
function outline_designer_settings($form, &$form_state) {
  // collapse default state
  $form["ui"] = array(
    '#type' => 'fieldset',
    '#title' => t('User interface'),
    '#collapsed' => FALSE,
    '#collapsible' => TRUE,
  );
  $form["ui"]["outline_designer_theme"] = array(
    '#type' => 'select',
    '#title' => t('Menu theme'),
    '#default_value' => variable_get('outline_designer_theme', 'vista'),
    '#options' => array(
      'vista' => 'Vista',
      'xp' => 'XP',
      'human' => 'Human',
      'osx' => 'OS X',
    ),
    '#description' => 'Theme for the outline designer menu system',
    '#required' => TRUE,
  );
  // collapse default state
  $form["ui"]["outline_designer_collapse_toggle"] = array(
    '#type' => 'checkbox',
    '#title' => t('Collapse nested content by default?'),
    '#default_value' => variable_get('outline_designer_collapse_toggle', 1),
    '#description' => 'This is helpful when working with large book structures.',
    '#required' => FALSE,
  );
  return system_settings_form($form);
}

/**
 * Implementation of the ajax menu hook
 *
 * @args
 *  $token = user token to block CSF attack
 *  $type = type of outline action
 *  $action = action that's being performed
 *  $var1 = typically nid being acted on
 *  $var2 = additional data like title, ect.
 *  $var3 = even more data like type
 */
function _outline_designer_ajax($token, $type, $action, $var1, $var2, $var3) {
  global $user;
  $token = check_plain($token);
  $type = check_plain($type);
  $action = check_plain($action);
  $var1 = check_plain($var1);
  $var2 = check_plain($var2);
  $var3 = check_plain($var3);
  if (drupal_valid_token($token)) {
    $ops = _outline_designer_get_operations($type, TRUE);
    foreach ($ops as $key => $op) {
      if ($action == $key && isset($op['callback'])) {
        print call_user_func_array($op['callback'], array($var1, $var2, $var3));
      }
    }
  }
  exit();
}

/**
 * Suffix adds the info to tack on the end of the form
 */
function theme_outline_designer_overlay_suffix($variables) {
  $render = $variables['render'];
  return '
    <div id="od_popup_overlay"></div>
    <div id="od_popup" class="context-menu context-menu-theme-' . variable_get('outline_designer_theme', 'vista') . '">
      <div class="popup-statusbar"></div>
      <div class="popup-content"></div>
      <div class="popup-buttons">
        <input type="button" name="Save" value="Save" class="od_submit_button" />
      </div>
      <img src="' . base_path() . drupal_get_path('module', 'outline_designer') . '/images/close.png" class="od_cancel_button" />
    </div>
    <div id="od_popup_toolbox">' . $render . '</div>';
}

/**
 * Implements hook_theme().
 */
function outline_designer_theme() {
  $theme = array(
    'outline_designer_context_menu_items_matrix' => array(
      'render element' => 'form',
    ),
    'outline_designer_suffix' => array(
      'variables' => array(
        'nid' => NULL,
        'icon_path' => NULL,
      ),
    ),
    'outline_designer_prefix' => array(
      'variables' => array(
        'type' => NULL,
        'nid' => NULL,
        'icon_path' => NULL,
      ),
    ),
    'outline_designer_overlay_suffix' => array(
      'variables' => array('render' => NULL),
    ),
    'outline_designer_ui_prefix' => array(
      'variables' => array(
        'nid' => NULL,
        'icon_path' => NULL,
        'can_add' => NULL,
      ),
    ),
  );
  return $theme;
}

/**
 * Theme Callback: Outline Designer page prefix
 */
function theme_outline_designer_prefix($variables) {
  $type = $variables['type'];
  $nid = $variables['nid'];
  $icon_path = $variables['icon_path'];
  return '<img alt="' . $type . '" id="node-' . $nid . '-icon" src="' . base_path() . variable_get("outline_designer_" . $type . "_icon", drupal_get_path('module', 'outline_designer') . "/images/page.png") . '"  alt="Nid: ' . $nid . '" title="Nid: ' . $nid . '" style="float:left; margin:2px;" /><img src="' . $icon_path . 'settings.png" alt="' . t('Content operations') . '" title="' . t('Content operations') . '" id="node-' . $nid . '" class="outline_designer_edit_button" />';
}

/**
 * Theme Callback: Outline Designer page suffix
 */
function theme_outline_designer_suffix($variables) {
  $nid = $variables['nid'];
  $icon_path = $variables['icon_path'];
  return '<img src="' . $icon_path . 'open.png"  alt="open" class="od-toggle-open" id="collapse-' . $nid . '" />';
}

/**
 * Theme Callback: Display the Context menu items as a matrix
 */
function theme_outline_designer_context_menu_items_matrix($variables) {
  $form = $variables['form'];
  $roles = user_roles(TRUE);
  foreach (element_children($form["checkboxes"]) as $item_name) {
    $trow = array();
    foreach ($roles as $rid => $role) {
      $trow[] = drupal_render($form["checkboxes"][$item_name]["outline_designer_context_menu_" . $item_name . "_" . $rid]);
    }
    $rows[] = $trow;
  }

  $output = theme('table', array('header' => array_values($roles), 'rows' => $rows));
  return $output;
}
/**
 * Implements hook_outline_designer_operations().
 */
function outline_designer_outline_designer_operations($type) {
  // stub to ensure that value list is an array
  return array();
}

/**
 * Helper function to invoke hook calls and build a list of operations.
 */
function _outline_designer_get_operations($type, $keep_callbacks = FALSE) {
  // allow other modules to define the list of operations
  $ops = module_invoke_all('outline_designer_operations', $type);
  // allow for altering of this list
  drupal_alter('outline_designer_operations', $ops, $type);
  // hide callbacks unless told to keep them, this helps unclutter js side
  if (!$keep_callbacks) {
    foreach ($ops as $key => $op) {
      // make sure its set so we dont throw an error
      if (isset($op['callback'])) {
        unset($ops[$key]['callback']);
      }
      // remove calls stating they are API only
      // callback removal is for all UI based calls
      if ($op['title'] == '<<OUTLINE_DESIGNER_API_ONLY>>') {
        unset($ops[$key]);
      }
    }
  }
  return $ops;
}