node_weight.module

<?php
// $Id$

/**
 * @file
 * Node weight module's administrative pages.
 *
 * Contains form building functions, submit handlers, and theme functions for
 * the module's overview form, add and edit forms, and the delete confirmation
 * form.
 */
function node_weight_perm() {
  return array('administer node weight');
}

/**
 * Implementation of hook_menu().
 */
function node_weight_menu() {
	$items['admin/content/node_weight'] = array(
		'title' => t('Node weight'),
		'description' => t('Select content type for weight manager.'),
		'page callback' => 'node_weight_type_form',
		'access arguments' => array('administer node weight'),
		'type' => MENU_NORMAL_ITEM,
		'file' => 'node_weight.admin.inc',
	);
	$items['admin/content/node_weight/%'] = array(
		'page callback' => 'drupal_get_form',
	  'page arguments' => array('node_weight_overview_form', 3),
		'access arguments' => array('administer node weight'),
		'type' => MENU_NORMAL_ITEM,
		'file' => 'node_weight.admin.inc',
	);
	$items['admin/settings/node_weight'] = array(
		'title' => t('Node Weight'),
		'description' => t('Configure Node Weight options.'),
		'page callback' => 'drupal_get_form',
		'page arguments' => array('node_weight_admin_settings_form'),
		'access arguments' => array('administer node weight'),
		'type' => MENU_NORMAL_ITEM,
		'file' => 'node_weight.admin.inc',
	);
	return $items;
}

/** 
 * Implementation of hook_theme(). 
 */
function node_weight_theme() {
  return array('node_weight_overview_form' => array('arguments' => array('form' => array())));
}

/** 
 * Implementation of hook_nodeapi(). 
 */
function node_weight_nodeapi(&$node, $op){
	$allow_type = variable_get('node_weight_allow_type', NULL);
	if ($allow_type) {
		foreach ($allow_type as $type => $value) {
			if ($value) {
				$allow_types[] = $type;
			}
		}
		
		if (isset($allow_types) && in_array($node->type, $allow_types)) {
			switch ($op) {
				case 'insert':
				  $node->url = empty($node->url) ? 'node/'. $node->nid : $node->url;
				  db_query("INSERT INTO {node_weight} (nid, weight, url) VALUES (%d, %d, '%s')", $node->nid, 0, $node->url);
					break;
				case 'update':
				  $node->url = empty($node->url) ? 'node/'. $node->nid : $node->url;
				  db_query("UPDATE {node_weight} SET url = '%s' WHERE nid = %d", $node->url, $node->nid);
					break;
				case 'delete':
					db_query("DELETE FROM {node_weight} WHERE nid = %d", $node->nid);
					break;
				case 'load':
					$data = db_fetch_object(db_query("SELECT * FROM {node_weight} WHERE nid = %d", $node->nid));
					$node->url = $data->url;
					$node->weight = $data->weight;
					break;
			}
		}
	}
}

/** 
 * Implementation of hook_form_alter(). 
 */
function node_weight_form_alter(&$form, $form_state, $form_id) {
	$allow_type = variable_get('node_weight_allow_type', NULL);
	if ($allow_type) {
		foreach ($allow_type as $type => $value) {
			if ($value) {
				$allow_form[] = $type.'_node_form';
			}
		}
		if (isset($allow_form) && in_array($form_id, $allow_form)) {
			$node = node_load(arg(1));
			$form['url'] = array(
				'#type' => 'textfield', 
				'#title' => t('URL'),
				'#default_value' => $node->url,
			);
		}
	}
}

/**
 * Implementation of hook_block().
 */
function node_weight_block($op = 'list', $delta = 0, $edit = array()) { 
  if ($op == 'list') {
    if ($allow_type = variable_get('node_weight_allow_type', NULL)) {
      foreach ($allow_type as $type => $value) {
        if ($value) {
          $blocks[$type]['info'] = t('Node Weight: !type', array('!type' => ucfirst($type)));
        }
      }
      return $blocks;
    }
  }
  elseif ($op == 'configure') {
    $types = array();
    $display_list = array(0 => t('None'));
    foreach (module_implements('weight_info') as $name) {
      $function = $name .'_weight_info';
      $return = $function();
      if (isset($return) && is_array($return)) {
        foreach ($return['form'] as $key => $_form) {
          $return['form'][$key]['#default_value'] = variable_get('nw_'. $key .'_'. $delta, $return['form'][$key]['#default_value']);
        }
        $form['node_weight_'. $name .'_fs'] = $return['form'];
        $form['node_weight_'. $name .'_fs']['#type'] = 'fieldset';
        $form['node_weight_'. $name .'_fs']['#title'] = $return['name'] .' settings';
        $form['node_weight_'. $name .'_fs']['#collapsible'] = TRUE;
        $form['node_weight_'. $name .'_fs']['#collapsed'] = variable_get('nw_display_style_'. $delta, '') == $name ? FALSE : TRUE;
        $display_list[$name] = $return['name'] .' - '. $return['description'];
        $types[] = $name;
      }
    }
    $form['display_style'] = array(
      '#type' => 'select',
      '#title' => t('Display style'),
      '#default_value' => variable_get('nw_display_style_'. $delta, 0),
      '#options' => $display_list,
      '#weight' => -10,
    );
    $form['general_fs'] = array(
      '#type' => 'fieldset',
      '#title' => t('General settings'),
      '#collapsible' => TRUE,
      '#collapsed' => TRUE,
      '#weight' => -9,
    );
    $form['general_fs']['number_of_item'] = array(
      '#type' => 'textfield',
      '#title' => t('Number of items'),
      '#description' => t('Number of items to display.'),
      '#default_value' => variable_get('nw_number_of_item_'. $delta, 5),
      '#size' => 5,
    );
    if (module_exists('imagecache')) {
      $presets = array('none' => t('Do not use imagecacahe'));
      foreach (imagecache_presets() as $preset) {
        $presets[$preset['presetname']] = $preset['presetname'];
      }
      $form['general_fs']['preset_image'] = array(
        '#type' => 'select',
        '#title' => t('Preset image'),
        '#description' => t('Select imagecache preset for image.'),
        '#default_value' => variable_get('nw_preset_image_'. $delta, 'none'),
        '#options' => $presets,
      );
    }
    $form['general_fs']['display_image_as_link'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display image as link'),
      '#default_value' => variable_get('nw_display_image_as_link_'. $delta, TRUE),
    );
    $form['general_fs']['display_title'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display title'),
      '#description' => t('Display node title'),
      '#default_value' => variable_get('nw_display_title_'. $delta, FALSE),
    );
    $form['general_fs']['display_body'] = array(
      '#type' => 'checkbox',
      '#title' => t('Display body'),
      '#description' => t('Display node body'),
      '#default_value' => variable_get('nw_display_body_'. $delta, FALSE),
    );
    $form['general_fs']['footer'] = array(
      '#type' => 'textarea',
      '#title' => t('Footer'),
      '#description' => t('Display message after node body. Leave blank if do not want to display.'),
      '#default_value' => variable_get('nw_footer_'. $delta, ''),
    );
    
    // Javascript
    $nw_settings['node_weight'] = array(
      'types' => $types,
    );
    drupal_add_js(drupal_get_path('module', 'node_weight') .'/node_weight.js');
    drupal_add_js($nw_settings, 'setting');
    
    return $form;
  }
  elseif ($op == 'save') {
    variable_set('nw_display_style_'. $delta, $edit['display_style']);
    variable_set('nw_number_of_item_'. $delta, $edit['number_of_item']);
    variable_set('nw_display_title_'. $delta, $edit['display_title']);
    variable_set('nw_display_body_'. $delta, $edit['display_body']);
    variable_set('nw_footer_'. $delta, $edit['footer']);
    variable_set('nw_display_image_as_link_'. $delta, $edit['display_image_as_link']);
    if (module_exists('imagecache')) {
      variable_set('nw_preset_image_'. $delta, $edit['preset_image']);
    }
    
    // Save settings from implements module
    foreach (module_implements('weight_info') as $name) {
      $function = $name .'_weight_info';
      $return = $function();
      if (isset($return) && is_array($return)) {
        if (!empty($return['form'])) {
          foreach ($return['form'] as $key => $form) {
            if (array_key_exists($key, $edit)) {
              variable_set('nw_'. $key .'_'. $delta, $edit[$key]);
            }
          }
        }
      }
    }
  }
  elseif ($op == 'view') {
    $settings = array(
      'number_of_item' => variable_get('nw_number_of_item_'. $delta, 5),
      'style' => variable_get('nw_display_style_'. $delta, 0),
      'display_title' => variable_get('nw_display_title_'. $delta, FALSE),
      'display_body' => variable_get('nw_display_body_'. $delta, FALSE),
      'footer' => variable_get('nw_footer_'. $delta, ''),
      'display_image_as_link' => variable_get('nw_display_image_as_link_'. $delta, TRUE),
    );
    if (module_exists('imagecache')) {
      $preset_image = variable_get('nw_preset_image_'. $delta, 'none');
      if ($preset_image != 'none' && $preset_image != '') {
        $settings['preset_image'] = $preset_image;
      }
    }
    
    $limit = $settings['number_of_item'] > 0 ? 'LIMIT 0, '. $settings['number_of_item'] : '';
    
    // Multi-language support
    if (module_exists('locale')) {
      global $language;
      $weight = db_query("SELECT n.nid, nw.url FROM {node} n LEFT JOIN {node_weight} nw ON n.nid = nw.nid WHERE n.type = '%s' AND n.status = 1 AND (n.language = '' OR n.language = '%s') ORDER BY nw.weight %s", $delta, $language->language, $limit);
    }
    else {
      $weight = db_query("SELECT n.nid, nw.url FROM {node} n LEFT JOIN {node_weight} nw ON n.nid = nw.nid WHERE n.type = '%s' AND n.status = 1 ORDER BY nw.weight %s", $delta, $limit);
    }
    
    // List nodes
    $nodes = array();
    while ($_node = db_fetch_object($weight)) {
      $style = variable_get('nw_display_style_'.$delta, FALSE);
      $function = $style .'_weight_info';
      if (function_exists($function)) {
        $return = $function();
        foreach ($return['form'] as $key => $form) {
          $settings[$key] = variable_get('nw_'. $key .'_'. $delta, NULL);
        }
      }
      
      $node = node_load($_node->nid);
      $node->url = $_node->url;
      
      // Multi-language URL
      if (!empty($node->language)) {
        if (mb_substr($node->url, 0, 7) != 'http://') {
          $node->url = $node->language .'/'. drupal_get_path_alias($node->url);
        }
      }
      
      if (mb_substr($node->url, 0, 7) != 'http://') {
        $node->link = l($node->title, $node->url);
      }
      else {
        $node->link = l($node->title, $node->url, array('absolute' => TRUE, 'attributes' => array('target' => '_blank')));
      }
      
      $node->node_weight = array(
        'image_path' => $node->{'field_'. $node->type .'_image'}[0]['filepath'],
        'thumb_path' => $node->{'field_'. $node->type .'_thumb'}[0]['filepath'],
        'swf_path' => $node->{'field_'. $node->type .'_swf'}[0]['filepath'],
        'embed_path' => $node->{'field_'. $node->type .'_embed'}[0]['value'],
      );
      $nodes[] = $node;
    }
				
    if ($style = variable_get('nw_display_style_'.$delta, FALSE)) {
      $function = $style .'_weight_view';
      if (function_exists($function)) {
        $block['content'] = $function($nodes, $delta, $settings);
      }
    }
    if (empty($block['content'])) {
      $block['content'] = 'default';
    }
    
    return $block;
  }
}

/**
 * Return settings
 */
function node_weight_get_settings($name, $type) {
  return variable_get('nw_'. $name .'_'. $type, NULL);
}

/**
 * Theme the node weight overview form.
 *
 * Arranges nodes in a table, and adds the css and js for draggable sorting.
 *
 * @ingroup themeable
 * @ingroup forms
 * @see node_weight_overview_form()
 */
function theme_node_weight_overview_form($form) {
  // Each node has a 'weight' that can be used to arrange it in relation to
  // other nodes. Drupal's tabledrag.js library allows users to control these
  // weights by dragging and dropping the nodes in a list -- we just need to
  // add identifying CSS classes to key elements in the table.

  $rows = array();
  foreach (element_children($form['node_weight']) as $key) {
    $row = array();

    // Render the hidden 'node_weight id' field and the title of the node into the
    // same column of the row.
    $row[] = drupal_render($form['node_weight'][$key]['nid']) . drupal_render($form['node_weight'][$key]['title']);
	$row[] = drupal_render($form['node_weight'][$key]['nid']) . drupal_render($form['node_weight'][$key]['taxonomy']);

    // Add an identifying CSS class to our weight field, as it's the one
    // the tabledrag.js will be controlling. This can be anything we want it to
    // be, we'll just tell the tabledrag.js library what it should look for.
    $form['node_weight'][$key]['weight']['#attributes']['class'] = 'node-weight-weight';
    $row[] = drupal_render($form['node_weight'][$key]['weight']);

    // Render the edit and delete links
    $row[] = drupal_render($form['node_weight'][$key]['edit']);
	$row[] = drupal_render($form['node_weight'][$key]['delete']);

    // Add the new row to our collection of rows, and give it the 'draggable'
    // class, indicating that it should be... well, draggable.
    $rows[] = array(
      'data' => $row,
      'class' => 'draggable',
    );
  }

  // If there were no nodes found, note the fact so users don't get confused
  // by a completely empty table.
  if (count($rows) == 0) {
    $rows[] = array(t('No nodes have been added.'), '<span class="node-weight-weight"></span>', '');
  }

  // Render a list of header titles, and our array of rows, into a table. Even
  // we've already rendered all of our node, we always call drupal_render()
  // on the form itself after we're done, so hidden security fields and other
  // elements (like buttons) will appear properly at the bottom of the form.
  $output = drupal_render($form['create_new']);
  $header = array(t('Title'), t('Taxonomy'), t('Weight'), t('Edit'), t('Delete'));
  $output .= theme('table', $header, $rows, array('id' => 'node-weight-overview'));
  $output .= drupal_render($form);

  // Now that we've built our output, tell Drupal to add the tabledrag.js library.
  // We'll pass in the ID of the table, the behavior we want it to use, and the
  // class that appears on each 'weight' form element it should be controlling.
  drupal_add_tabledrag('node-weight-overview', 'order', 'self', 'node-weight-weight');

  return $output;
}

function d($msg) {
  drupal_set_message($msg);
}

function da($msg) {
  drupal_set_message('<pre>'. print_r($msg, 1) .'</pre>');
}

/**
 * Implementation of hook_views_data().
 */
function node_weight_views_data() {
  $data['node_weight']['table']['group'] = t('Node Weight');
  $data['node_weight']['table']['base'] = array(
    'field' => 'nid',
    'title' => t('Node ID'),
    'help' => t('ID of Node.'),
    'weight' => -10,
  );
  $data['node_weight']['table']['join'] = array(
    'node' => array(
      'left_field' => 'nid',
      'field' => 'nid',
    )
  );
  $data['node_weight']['weight'] = array(
    'title' => t('Weight'),
    'help' => t('Weight of Node.'),
    'field' => array(
      'handler' => 'views_handler_field',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_numeric',
      'allow empty' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
  );
  $data['node_weight']['url'] = array(
    'title' => t('Link URL'),
    'help' => t('Link URL of Node.'),
    'field' => array(
      'handler' => 'views_handler_field',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
      'allow empty' => TRUE,
    ),
    'argument' => array(
      'handler' => 'views_handler_argument_string',
      'empty field name' => t('Unknown'),
    ),
  );
  return $data;
}