ILIAS Release_3_4_x_branch .rev 46804: content/classes/Pages/class.ilMediaAliasItem.php Source File

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00001 <?php
00002 /*
00003         +-----------------------------------------------------------------------------+
00004         | ILIAS open source                                                           |
00005         +-----------------------------------------------------------------------------+
00006         | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
00007         |                                                                             |
00008         | This program is free software; you can redistribute it and/or               |
00009         | modify it under the terms of the GNU General Public License                 |
00010         | as published by the Free Software Foundation; either version 2              |
00011         | of the License, or (at your option) any later version.                      |
00012         |                                                                             |
00013         | This program is distributed in the hope that it will be useful,             |
00014         | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
00015         | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
00016         | GNU General Public License for more details.                                |
00017         |                                                                             |
00018         | You should have received a copy of the GNU General Public License           |
00019         | along with this program; if not, write to the Free Software                 |
00020         | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
00021         +-----------------------------------------------------------------------------+
00022 */
00023 
00024 
00035 class ilMediaAliasItem
00036 {
00037         var $dom;
00038         var $hier_id;
00039         var $purpose;
00040         var $item_node;
00041 
00042         function ilMediaAliasItem(&$a_dom, $a_hier_id, $a_purpose)
00043         {
00044                 $this->dom =& $a_dom;
00045                 $this->hier_id = $a_hier_id;
00046                 $this->purpose = $a_purpose;
00047 
00048                 $xpc = xpath_new_context($this->dom);
00049                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='$a_purpose']";
00050                 $res =& xpath_eval($xpc, $path);
00051                 if (count($res->nodeset) > 0)
00052                 {
00053                         $this->item_node =& $res->nodeset[0];
00054                 }
00055         }
00056 
00062         function exists()
00063         {
00064                 if (is_object($this->item_node))
00065                 {
00066                         return true;
00067                 }
00068                 else
00069                 {
00070                         return false;
00071                 }
00072         }
00073 
00077         function insert()
00078         {
00079                 $xpc = xpath_new_context($this->dom);
00080                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject";
00081                 $res =& xpath_eval($xpc, $path);
00082                 if (count($res->nodeset) > 0)
00083                 {
00084                         $obj_node =& $res->nodeset[0];
00085                         $item_node =& $this->dom->create_element("MediaAliasItem");
00086                         $item_node =& $obj_node->append_child($item_node);
00087                         $item_node->set_attribute("Purpose", $this->purpose);
00088                         $this->item_node =& $item_node;
00089                 }
00090         }
00091 
00092         function setWidth($a_width)
00093         {
00094                 ilDOMUtil::setFirstOptionalElement($this->dom, $this->item_node, "Layout",
00095                         array("Caption", "Parameter"),
00096                         "", array("Width" => $a_width), false);
00097         }
00098 
00099 
00100         function getWidth()
00101         {
00102                 $xpc = xpath_new_context($this->dom);
00103                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Layout";
00104                 $res =& xpath_eval($xpc, $path);
00105                 if (count($res->nodeset) == 1)
00106                 {
00107                         $layout_node =& $res->nodeset[0];
00108                         return $layout_node->get_attribute("Width");
00109                 }
00110         }
00111 
00117         function definesSize()
00118         {
00119                 $xpc = xpath_new_context($this->dom);
00120                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Layout";
00121                 $res =& xpath_eval($xpc, $path);
00122                 if (count($res->nodeset) == 1)
00123                 {
00124                         $layout_node =& $res->nodeset[0];
00125                         return $layout_node->has_attribute("Width");
00126                 }
00127                 return false;
00128         }
00129 
00133         function deriveSize()
00134         {
00135                 $xpc = xpath_new_context($this->dom);
00136                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Layout";
00137                 $res =& xpath_eval($xpc, $path);
00138                 if (count($res->nodeset) == 1)
00139                 {
00140                         $layout_node =& $res->nodeset[0];
00141                         if ($layout_node->has_attribute("Width"))
00142                         {
00143                                 $layout_node->remove_attribute("Width");
00144                         }
00145                         if ($layout_node->has_attribute("Height"))
00146                         {
00147                                 $layout_node->remove_attribute("Height");
00148                         }
00149                 }
00150         }
00151 
00152         function setHeight($a_height)
00153         {
00154                 ilDOMUtil::setFirstOptionalElement($this->dom, $this->item_node, "Layout",
00155                         array("Caption", "Parameter"),
00156                         "", array("Height" => $a_height), false);
00157         }
00158 
00159 
00160         function getHeight()
00161         {
00162                 $xpc = xpath_new_context($this->dom);
00163                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Layout";
00164                 $res =& xpath_eval($xpc, $path);
00165                 if (count($res->nodeset) == 1)
00166                 {
00167                         $layout_node =& $res->nodeset[0];
00168                         return $layout_node->get_attribute("Height");
00169                 }
00170         }
00171 
00172 
00173         function setCaption($a_caption)
00174         {
00175                 ilDOMUtil::setFirstOptionalElement($this->dom, $this->item_node, "Caption",
00176                         array("Parameter"),
00177                         $a_caption, array("Align" => "bottom"));
00178         }
00179 
00180 
00181         function getCaption()
00182         {
00183                 $xpc = xpath_new_context($this->dom);
00184                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Caption";
00185                 $res =& xpath_eval($xpc, $path);
00186                 if (count($res->nodeset) == 1)
00187                 {
00188                         $caption_node =& $res->nodeset[0];
00189                         return $caption_node->get_content();
00190                 }
00191         }
00192 
00198         function definesCaption()
00199         {
00200                 $xpc = xpath_new_context($this->dom);
00201                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Caption";
00202                 $res =& xpath_eval($xpc, $path);
00203                 if (count($res->nodeset) > 0)
00204                 {
00205                         return true;
00206                 }
00207                 return false;
00208         }
00209 
00213         function deriveCaption()
00214         {
00215                 $xpc = xpath_new_context($this->dom);
00216                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Caption";
00217                 $res =& xpath_eval($xpc, $path);
00218                 if (count($res->nodeset) > 0)
00219                 {
00220                         $caption_node =& $res->nodeset[0];
00221                         $caption_node->unlink_node($caption_node);
00222                 }
00223         }
00224 
00225         function setHorizontalAlign($a_halign)
00226         {
00227                 ilDOMUtil::setFirstOptionalElement($this->dom, $this->item_node, "Layout",
00228                         array("Caption", "Parameter"),
00229                         "", array("HorizontalAlign" => $a_halign), false);
00230         }
00231 
00232 
00233         function getHorizontalAlign()
00234         {
00235                 $xpc = xpath_new_context($this->dom);
00236                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Layout";
00237                 $res =& xpath_eval($xpc, $path);
00238                 if (count($res->nodeset) == 1)
00239                 {
00240                         $layout_node =& $res->nodeset[0];
00241                         return $layout_node->get_attribute("HorizontalAlign");
00242                 }
00243         }
00244 
00245 
00253         function setParameters($a_par_array)
00254         {
00255                 $xpc = xpath_new_context($this->dom);
00256                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Parameter";
00257                 $res =& xpath_eval($xpc, $path);
00258                 $par_arr = array();
00259                 for($i=0; $i < count($res->nodeset); $i++)
00260                 {
00261                         $par_node =& $res->nodeset[$i];
00262                         $par_node->unlink_node($par_node);
00263                 }
00264 
00265                 if (is_array($a_par_array))
00266                 {
00267                         foreach($a_par_array as $par => $val)
00268                         {
00269                                 $par_node =& $this->dom->create_element("Parameter");
00270                                 $par_node =& $this->item_node->append_child($par_node);
00271                                 $par_node->set_attribute("Name", $par);
00272                                 $par_node->set_attribute("Value", $val);
00273                         }
00274                 }
00275         }
00276 
00277 
00281         function getParameterString()
00282         {
00283                 $xpc = xpath_new_context($this->dom);
00284                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Parameter";
00285                 $res =& xpath_eval($xpc, $path);
00286                 $par_arr = array();
00287                 for($i=0; $i < count($res->nodeset); $i++)
00288                 {
00289                         $par_node =& $res->nodeset[$i];
00290                         $par_arr[] = $par_node->get_attribute("Name")."=\"".$par_node->get_attribute("Value")."\"";
00291                 }
00292                 return implode($par_arr, ", ");
00293         }
00294 
00295 
00299         function getParameter($a_name)
00300         {
00301         }
00302 
00308         function definesParameters()
00309         {
00310                 $xpc = xpath_new_context($this->dom);
00311                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Parameter";
00312                 $res =& xpath_eval($xpc, $path);
00313                 if (count($res->nodeset) > 0)
00314                 {
00315                         return true;
00316                 }
00317                 return false;
00318         }
00319 
00323         function deriveParameters()
00324         {
00325                 $xpc = xpath_new_context($this->dom);
00326                 $path = "//PageContent[@HierId = '".$this->hier_id."']/MediaObject/MediaAliasItem[@Purpose='".$this->purpose."']/Parameter";
00327                 $res =& xpath_eval($xpc, $path);
00328                 if (count($res->nodeset) > 0)
00329                 {
00330                         for($i=0; $i < count($res->nodeset); $i++)
00331                         {
00332                                 $par_node =& $res->nodeset[$i];
00333                                 $par_node->unlink_node($par_node);
00334                         }
00335                 }
00336         }
00337 
00341         function delete()
00342         {
00343                 if (is_object($this->item_node))
00344                 {
00345                         $this->item_node->unlink_node($this->item_node);
00346                 }
00347         }
00348 }
00349 ?>