<?php

/**
 * @file
 * Translation table module
 *
 * UI for quick translation of user submitted strings.
 * The i18n module allows the translation of different dynamic strings, but the
 * process is tedious.
 *
 * This module presents your taxonomy terms, menu items and other text groups in
 * a table, and each language has a corresponding column. Just fill out the
 * translations and click Save.
 */

/**
 * Implementation of hook_menu().
 */
function translation_table_menu() {
  $items = array();

  // Get the different translation tables.
  foreach (module_list() as $module) {
    translation_table_module_include("$module.translation_table.inc");
  }

  $module_items = module_invoke_all('translation_table_data');

  foreach ($module_items as $key => $module_item) {
    if (isset($module_item['form']) && isset($module_item['file'])) {
      $items['admin/config/regional/translate/table/'. $key] = array(
        'title' => isset($module_item['title']) ? $module_item['title'] : 'Unknown',
        'description' => isset($module_item['description']) ? $module_item['description'] : '*',
        'page callback' => 'translation_table_get_form',
        'page arguments' => array($module_item['form']),
        'access callback' => 'user_access',
        'access arguments' => array('translate interface'),
        'type' => MENU_LOCAL_TASK,
        'file' => $module_item['file'],
        'file path' => isset($module_item['file path']) ? $module_item['file path'] : NULL,
      );
    }
  }

  if (!empty($items)) {
    // Modify the fist item to local task.
    $first_key = key($items);
    $items[$first_key]['weight'] = -10;
    $items[$first_key]['type'] = MENU_DEFAULT_LOCAL_TASK;

    $items['admin/config/regional/translate/table'] = array(
      'title' => 'Translation table',
      'description' => 'Edit translations',
      'page callback' => 'translation_table_get_form',
      'page arguments' => $items[$first_key]['page arguments'],
      'access callback' => 'user_access',
      'access arguments' => array('translate interface'),
      'type' => MENU_LOCAL_TASK,
      'file' => $items[$first_key]['file'],
    );
  }

  return $items;
}

/**
 * Menu callback;
 */
function translation_table_get_form($form_id) {
  module_load_include('inc', 'translation_table', 'includes/admin');
  return drupal_get_form($form_id);
}

/**
 * Implementation of hook_theme().
 */
function translation_table_theme() {
  return array(
    'translation_table' => array(
      'render element' => 'form',
      'file' => 'includes/theme.inc',
    ),
    'translation_table_filter' => array(
      'render element' => 'form',
      'file' => 'includes/theme.inc',
    ),
  );
}

/**
 * Load translation table files on behalf of modules.
 */
function translation_table_module_include($file) {
  foreach (translation_table_get_module_apis() as $module => $info) {
    if (file_exists(DRUPAL_ROOT . "/$info[path]/$file")) {
      require_once DRUPAL_ROOT . "/$info[path]/$file";
    }
  }
}

/**
 * Get a list of modules that support the current translation_table API.
 */
function translation_table_get_module_apis() {
  static $cache = NULL;
  if (!isset($cache)) {
    $cache = array();
    foreach (module_implements('translation_table_api') as $module) {
      $function = $module .'_translation_table_api';
      $info = $function();
      if (isset($info['api']) && $info['api'] == 1.000) {
        if (!isset($info['path'])) {
          $info['path'] = drupal_get_path('module', $module);
        }
        $cache[$module] = $info;
      }
    }
  }

  return $cache;
}

/**
 * Implementation of hook_translation_table_api().
 */
function translation_table_translation_table_api() {
  return array(
    'api' => 1,
    'path' => drupal_get_path('module', 'translation_table') .'/modules',
  );
}