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<?php
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//ELMS: Outline Designer - Ajax book / general usability improvements for Drupal 5.x
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//Copyright (C) 2008 The Pennsylvania State University
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//
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//Bryan Ollendyke
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//bto108@psu.edu
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//
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//Keith D. Bailey
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//kdb163@psu.edu
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//
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//12 Borland
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//University Park, PA 16802
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//
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//This program is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//
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//This program is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License along
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//with this program; if not, write to the Free Software Foundation, Inc.,
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//51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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require_once './includes/bootstrap.inc';
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if(isset($_POST['action'])){
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drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
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switch($_POST['action']){
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//in: node title, node parent id
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//action: Check the parent / nodes around this one we're inserting and guess about what content type to use, otherwise make it the system default
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//out: node id, node type, icon to render
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case 'add_node':
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$node->title = $_POST['title'];
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$node->status = 1;
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$node->uid = $user->uid;
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//take into account that we could be creating a new book
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if($_POST['parent'] == 0 || !user_access('change content types')){
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$node->type = variable_get("outline_designer_default_type", "page");
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}else{
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//figure out if there are currently any children
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//if there aren't then just give the child the parent's properties
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$result = db_query("SELECT type FROM node JOIN book ON book.vid = node.vid WHERE parent=" . $_POST['parent'] . " ORDER BY weight DESC");
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$num_rows = db_num_rows($result);
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if($num_rows == 0){
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$parent = node_load($_POST['parent']);
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if(user_access('create ' . $parent->type . ' content')){
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$node->type = $parent->type;
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}else{
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$node->type = variable_get("outline_designer_default_type", "page");
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}
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}else{
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$value = db_fetch_array($result);
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if(user_access('create ' . $value['type'] . ' content')){
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$node->type = $value['type'];
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}else{
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$node->type = variable_get("outline_designer_default_type", "page");
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}
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}
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}
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//set these incase this is the book type which uses them on save, otherwise these are ignored the first time
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$node->weight = -15;
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$node->parent = $_POST['parent'];
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node_save($node);
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//we need to make sure this isn't of type book or else it will cause a duplicate key entry error because it's save hook has already used the parent value where as non-book types don't the first time
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if($node->type != 'book'){
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db_query("INSERT INTO {book} (nid, vid, parent, weight) VALUES (%d, %d, %d, %d)", $node->nid, $node->vid, $_POST['parent'], -15);
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}
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if($node->type == 'book'){
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$term = 'pages';
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}else{
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$term = 'content';
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}
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if(user_access('edit ' . $node->type . ' ' . $term) || user_access('edit own ' . $node->type . ' ' . $term)){
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$allow_edit = 1;
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}else{
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$allow_edit = 0;
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}
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print serialize(array($node->nid,$node->type,variable_get("outline_designer_" . $node->type . "_icon",drupal_get_path('module','outline_designer') . "/images/node.png"),$allow_edit));
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break;
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//in: node id, node type name
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//action: change node type and resave
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//out: icon to render
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case 'change_type':
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$node = node_load($_POST['nid']);
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$type = db_result(db_query("SELECT type FROM node_type WHERE name='" . $_POST['new_type'] . "'"));
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if($node->type != $type){
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$node->type = $type;
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node_save($node);
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}
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print variable_get("outline_designer_" . $node->type . "_icon",drupal_get_path('module','outline_designer') . "/images/node.png");
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break;
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//in: list of node ids to delete
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//action: delete nodes
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//out: completion response
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case 'delete':
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$ary = unserialize($_POST['ids']);
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for($i=0;$i<count($ary);$i++){
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node_delete($ary[$i]);
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}
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print 'Nodes successfully removed!';
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break;
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//in: node id moved, new parent id it was moved under
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//action: change node parent
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//out: nothing
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case 'drag_drop_update':
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$node = node_load($_POST['nid']);
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$node->parent = $_POST['parent'];
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$node->log = 'Outline Designer reweighting update on drag-and-drop';
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node_save($node);
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break;
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//in: root node id
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//action: duplicate the node and
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//out: new root node
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case 'duplicate_nodes':
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$tree = array();
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//pull the whole node tree but only get the nid's
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$value = db_fetch_array(db_query("SELECT node.nid FROM book JOIN node ON node.vid=book.vid WHERE node.nid=" . $_POST['root']));
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$tree[$value['nid']] = 0;
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$tree = _outline_designer_recurse_duplicate_nodes($_POST['root'],$tree);
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//load each node in the node tree
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foreach($tree as $old_nid => $new_nid){
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$node = node_load($old_nid);
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$node->nid = null;
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$node->created = null;
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if($old_nid == $_POST['root']){
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//do nothing to the parent because this accounts for coping just a branch
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$node->title = "Duplicate of " . $node->title;
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}else{
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$node->parent = $tree[$node->parent];
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}
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node_save($node);
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if($node->type != 'book'){
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db_query("INSERT INTO {book} (nid, vid, parent, weight) VALUES (%d, %d, %d, %d)", $node->nid, $node->vid, $node->parent, $node->weight);
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}
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$tree[$old_nid] = $node->nid;
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}
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//return the new root
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print_r($tree[$_POST['root']]);
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break;
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//in: nothing
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//action: determine what node types the user is allowed to create / switch their content to. User's ability to change content type is querried, then system defined variable list, and then takes user create type content permissions into account
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//out: node type names and icon to render
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case 'get_icons':
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if(user_access('change content types')){
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$ary = array();
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$ary2 = array();
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$ary = variable_get('outline_designer_content_types',array('page'));
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foreach($ary as $value){
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$name = db_result(db_query("SELECT name FROM node_type WHERE type='" . $value . "'"));
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//only allow users with the create "type" privlege perform this operation
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if(user_access("create $value content")){
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array_push($ary2,array($name,variable_get("outline_designer_" . $value . "_icon",drupal_get_path('module','outline_designer') . "/images/node.png")));
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}
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}
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print serialize($ary2);
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}
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break;
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//in:nothing
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//action: find all nodes without parents (these are the root nodes)
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//out: all the node roots
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case 'get_book_roots':
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$roots = array();
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$result = db_query("SELECT node.nid,title FROM node JOIN book ON book.vid = node.vid WHERE parent=0 ORDER BY node.nid");
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while($value = db_fetch_array($result)){
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array_push($roots,array($value['nid'],$value['title']));
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}
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print serialize($roots);
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break;
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//in: root node id
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//action: load all nodes from a root node
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//out: node id, parent association, title, icon to render, allow edit
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case 'load_tree':
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//pull everything
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$tree = array();
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$value = db_fetch_array(db_query("SELECT node.uid,node.nid,parent,title,type FROM book JOIN node ON node.vid=book.vid WHERE node.nid=" .$_POST['nid'] . " ORDER BY weight"));
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if($value['type'] == 'book'){
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$term = 'pages';
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}else{
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$term = 'content';
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}
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if(user_access('edit ' . $value['type'] . ' ' . $term)){
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$allow_edit = 1;
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}elseif($user->uid = $value['uid'] && user_access('edit own ' . $value['type'] . ' ' . $term)){
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$allow_edit = 1;
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}else{
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$allow_edit = 0;
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}
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array_push($tree,array($value['nid'],$value['parent'],$value['title'],variable_get("outline_designer_" . $value['type'] . "_icon",drupal_get_path('module','outline_designer') . "/images/node.png"),$allow_edit));
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$tree = _outline_designer_tree_recurse($_POST['nid'],$tree);
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print serialize($tree);
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break;
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//in: node id, title
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//action: rename a single node
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//out: nothing
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case 'rename':
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$node = node_load($_POST['nid']);
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$node->title = $_POST['newtitle'];
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$node->revision = 1;
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node_save($node);
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break;
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//in: array of arrays with node id, parent id, weight, and title of each node
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//action: save all nodes currently displayed
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//out: array of node id and icon to render
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case 'save_tree':
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$ary = unserialize($_POST['tree']);
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$type = array();
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for($no=0;$no<count($ary);$no++){
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$nid = $ary[$no][0];
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$parent = $ary[$no][1];
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$weight = $no;
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$title = $ary[$no][2];
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$node = node_load($nid);
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//figure out if the type is set and make it the same as the level it's currently on
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//if it doesn't have a type that means it's new and we should update instead of create
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if($node->type == ''){
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$node->type = variable_get("outline_designer_default_type", "page");
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print serialize(array($node->nid,variable_get("outline_designer_" . $node->type . "_icon",drupal_get_path('module','outline_designer') . "/images/node.png")));
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}else{
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//try to set the nid, this way if the parent is referenced later it will take
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//the properties of the parent
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$type[$nid] = array($node->type);
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//associate the parent id to the node type of the elements under it (by default)
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//this will also override the parent's settings to default to the children
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//if they end up existing
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$type[$parent] = array($node->type);
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}
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//weight is currently being hacked to fit our new book purposes. It will render correctly but never be able to update correctly if it goes beyond 31 in any branch
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//weight orders them on the page and then they are indented based on who their parent is
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if($node->weight != $weight || $node->parent != $parent || $node->title != $title){
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$node->weight = $weight;
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$node->parent = $parent;
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$node->title = $title;
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$node->revision = 1;
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node_save($node);
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}
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}
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break;
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//in: node id, weight
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//action: alter weights across all nodes
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//out: nothing
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case 'update_weights':
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$ary = unserialize($_POST['weight']);
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foreach($ary as $weight){
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$node = node_load($weight[1]);
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$node->weight = $weight[0];
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$node->log = 'Outline Designer reweighting update';
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node_save($node);
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}
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break;
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}
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}
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?>
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