egroupware_official/etemplate/inc/class.link_widget.inc.php

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<?php
/**************************************************************************\
* eGroupWare - eTemplate Extension - Link Widgets / UI for the link class *
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* http://www.egroupware.org *
* Written by Ralf Becker <RalfBecker@outdoor-training.de> *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
/* $Id$ */
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/**
* eTemplate Extension: several widgets as user-interface for the link-class
*
* All widgets use the link-registry, to "know" which apps use popups (and what size).
* If run in a popup and the app uses no popups, a target will be set, to open a new full decorated window.
*
* The class contains the following widgets:
* - link: Show a link to one linked entry specified by an array with keys app, id and optional title and help-message
* - link-to: Widget to create links to an other entries of link-aware apps
* If an id was set, this widgets creats the links without further interaction with the calling code.
* If the entry does not yet exist, the widget returns an array with the new links in the id. After the
* entry was successful create, bolink::link($app,$new_id,$arr) has to be called to create the links!
* - link-list: Widget to shows the links to an entry in a table with an unlink icon for each link
* - link-string: comma-separated list of link-titles with a link to its view method, value is like get_links()
* or array with keys to_app and to_id (widget calls then get_links itself)
* - link-add: Add a new entry of the select app, which is already linked to a given entry
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*
*<code>
* $content[$name] = array(
* 'to_app' => // I string appname of the entry to link to
* 'to_id' => // IO int id of the entry to link to, for new entries 0, returns the array with new links
* // the following params apply only for the link-to widget!
* 'no_files' => // I boolean suppress attach-files, default no
* 'search_label' => // I string label to use instead of search
* 'link_label' => // I string label for the link button, default 'Link'
* // optional only for the link-add widget
* 'extra' => // I array with extra parameters, eg. array('cat_id' => 15)
* );
*</code>
*
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* This widget is independent of the UI as it only uses etemplate-widgets and has therefor no render-function.
*
* @package etemplate
* @subpackage extensions
* @author Ralf Becker <RalfBecker@outdoor-training.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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*/
class link_widget
{
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/**
* @var array exported methods of this class
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*/
var $public_functions = array(
'pre_process' => True,
'post_process' => True
);
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/**
* @var array availible extensions and there names for the editor
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*/
var $human_name = array(
'link' => 'Link',
'link-to' => 'LinkTo',
'link-list' => 'LinkList',
'link-string' => 'LinkString',
'link-add' => 'LinkEntry',
);
/**
* @var boolean $debug switches debug-messages on and off
*/
var $debug = False;
/**
* @var object $link reference to the link class
*/
var $link;
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/**
* Constructor of the extension
*
* @param string $ui '' for html
*/
function link_widget($ui)
{
if (!is_object($GLOBALS['egw']->link))
{
$GLOBALS['egw']->link =& CreateObject('infolog.bolink');
}
$this->link =& $GLOBALS['egw']->link;
}
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/**
* pre-processing of the extension
*
* This function is called before the extension gets rendered
*
* @param string $name form-name of the control
* @param mixed &$value value / existing content, can be modified
* @param array &$cell array with the widget, can be modified for ui-independent widgets
* @param array &$readonlys names of widgets as key, to be made readonly
* @param mixed &$extension_data data the extension can store persisten between pre- and post-process
* @param object &$tmpl reference to the template we belong too
* @return boolean true if extra label is allowed, false otherwise
*/
function pre_process($name,&$value,&$cell,&$readonlys,&$extension_data,&$tmpl)
{
$type = $cell['type'];
$help = $cell['help'] ? ($value['help'] ? $value['help'] : $cell['help']) : lang('view this linked entry in its application');
if (($type == 'link-to' || $type == 'link-add') && ($cell['readonly'] || $readonlys))
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{
//echo "<p>link-to is readonly, cell=".print_r($cell,true).", readonlys=".print_r($readonlys)."</p>\n";
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// readonly ==> omit the whole widget
$cell = $tmpl->empty_cell();
return;
}
if (!is_array($value) && $type != 'link-string' && $type != 'link')
{
$value = array(
'to_id' => $value,
'to_app' => $GLOBALS['egw_info']['flags']['currentapp']
);
}
if ($this->debug)
{
echo "<p>link_widget::pre_process($name,$value,".print_r($cell,true).",$readonlys,,)</p>\n";
echo "<p>start: $cell[type][$name]::pre_process: value ="; _debug_array($value);
echo "extension_data[$cell[type]][$name] ="; _debug_array($extension_data);
}
switch ($type = $cell['type'])
{
case 'link':
$cell['readonly'] = True; // set it readonly to NOT call our post_process function
$cell['no_lang'] = 1;
$link = $target = $popup = '';
if ($value['app'] && $value['id'])
{
$view = $this->link->view($value['app'],$value['id']);
$link = $view['menuaction']; unset($view['menuaction']);
foreach($view as $var => $val)
{
$link .= '&'.$var.'='.$val;
}
if (!($popup = $this->link->is_popup($value['app'],'view')) &&
$GLOBALS['egw_info']['etemplate']['output_mode'] == 2) // we are in a popup
{
$target = '_blank';
}
if (!$cell['help'])
{
$cell['help'] = $help;
$cell['no_lang'] = 2;
}
}
elseif (!$value['title'])
{
$cell = $tmpl->empty_cell();
$cell['readonly'] = True; // set it readonly to NOT call our post_process function
return;
}
$cell['type'] = 'label';
// size: [b[old]][i[talic]],[link],[activate_links],[label_for],[link_target],[link_popup_size]
list($cell['size']) = explode(',',$cell['size']);
$cell['size'] .= ','.$link.',,,'.$target.','.$popup;
$value = $value['title'] ? $value['title'] : $this->link->title($value['app'],$value['id']);
return true;
case 'link-string':
$str = '';
if ($values['to_id'] && $values['to_app'])
{
$values = $this->link->get_links($values['to_app'],$values['to_id']);
}
if (is_array($value))
{
foreach ($value as $link)
{
$options .= " onMouseOver=\"self.status='".addslashes($tmpl->html->htmlspecialchars($help))."'; return true;\"";
$options .= " onMouseOut=\"self.status=''; return true;\"";
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if (($popup = $this->link->is_popup($link['app'],'view')))
{
list($w,$h) = explode('x',$popup);
$options = ' onclick="window.open(this,this.target,\'width='.(int)$w.',height='.(int)$h.',location=no,menubar=no,toolbar=no,scrollbars=yes,status=yes\'); return false;"';
}
elseif ($GLOBALS['egw_info']['etemplate']['output_mode'] == 2) // we are in a popup
{
$options = ' target="_blank"';
}
$str .= ($str !== '' ? ', ' : '') . $tmpl->html->a_href(
$tmpl->html->htmlspecialchars($this->link->title($link['app'],$link['id'])),
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'/index.php',$this->link->view($link['app'],$link['id'],$link),$options);
}
}
$cell['type'] = 'html';
$cell['readonly'] = True; // set it readonly to NOT call our post_process function
$value = $str;
return True;
case 'link-add':
$apps = $this->link->app_list($type == 'link-add' ? 'add' : '');
if (!$apps) // cant do an add without apps or already created entry
{
$cell = $tmpl->empty_cell();
return;
}
asort($apps); // sort them alphabetic
$value['options-app'] = array();
foreach($apps as $app => $label)
{
$link = $GLOBALS['egw']->link('/index.php',$this->link->add($app,$value['to_app'],$value['to_id'])+
(is_array($value['extra']) ? $value['extra'] : array()));
if (($popup = $this->link->is_popup($app,'add')))
{
list($w,$h) = explode('x',$popup);
$action = "window.open('$link','_blank','width=$w,height=$h,location=no,menubar=no,toolbar=no,scrollbars=yes,status=yes');";
}
else
{
$action = "location.href = '$link';";
}
$value['options-app'][$action] = $label;
}
$tpl =& new etemplate('etemplate.link_widget.add');
break;
case 'link-to':
$value['msg'] = '';
if ($value['button'] == 'search' && count($ids = $this->link->query($value['app'],$value['query'])))
{
$extension_data['app'] = $value['app'];
$value = $extension_data;
$value['options-id'] = $ids;
$value['remark'] = '';
$tpl =& new etemplate('etemplate.link_widget.create');
if ($value['link_label'])
{
$tpl->set_cell_attribute('create','label',$value['link_label']);
}
}
else
{
// error from search or upload
$value['msg'] = $value['button'] == 'search' ? lang('Nothing found - try again !!!') : $extension_data['msg'];
if (!$value['button'])
{
$extension_data = $value;
}
$value = array_merge($extension_data,$value);
$value['options-app'] = $this->link->app_list();
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asort($value['options-app']); // sort them alphabetic
$tpl =& new etemplate('etemplate.link_widget.search');
if ($value['search_label'])
{
$tpl->set_cell_attribute('app','label',$value['search_label']);
}
$tpl->set_cell_attribute('comment','onchange',"set_style_by_class('*','hide_comment','display',this.checked ? 'block' : 'none');");
unset($value['comment']);
}
break;
case 'link-list':
$app = $value['to_app'];
$id = isset($extension_data['to_id']) ? $extension_data['to_id'] : $value['to_id'];
if ($this->debug)
{
echo "<p>link-list-widget[$name].preprocess: value="; _debug_array($value);
}
if (!isset($value['title']))
{
$value['title'] = $this->link->title($app,$id);
}
$links = $this->link->get_links($app,$id);
$value['anz_links'] = count($links);
$extension_data = $value;
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if (!count($links))
{
$cell = $tmpl->empty_cell();
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$value = '';
return True;
}
$tpl =& new etemplate('etemplate.link_widget.list');
$tpl->data[0]['A'] = $tmpl->data[0]['A']; // set width of first col like the tmpl. calling us
for($row=$tpl->rows-1; list(,$link) = each($links); ++$row)
{
$value[$row] = $link;
$value[$row]['title'] = $this->link->title($link['app'],$link['id'],$link);
if (!is_array($link['id']))
{
$value[$row]['view'] = $this->link->view($link['app'],$link['id'],$link);
if (!($value[$row]['popup'] = $this->link->is_popup($link['app'],'view')) &&
$GLOBALS['egw_info']['etemplate']['output_mode'] == 2) // we are in a popup
{
$value[$row]['target'] = '_blank'; // we create a new window as the linked page is no popup
}
}
if ($link['app'] == $this->link->vfs_appname)
{
$value[$row]['label'] = 'Delete';
$value[$row]['help'] = lang('Delete this file');
}
else
{
$value[$row]['label'] = 'Unlink';
$value[$row]['help'] = lang('Remove this link (not the entry itself)');
}
}
break;
}
$cell['size'] = $cell['name'];
$cell['type'] = 'template';
$cell['name'] = $tpl->name;
$cell['obj'] =& $tpl;
// keep the editor away from the generated tmpls
$tpl->no_onclick = true;
if ($this->debug)
{
echo "<p>end: $type"."[$name]::pre_process: value ="; _debug_array($value);
}
return True; // extra Label is ok
}
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/**
* postprocessing method, called after the submission of the form
*
* It has to copy the allowed/valid data from $value_in to $value, otherwise the widget
* will return no data (if it has a preprocessing method). The framework insures that
* the post-processing of all contained widget has been done before.
*
* Only used by select-dow so far
*
* @param string $name form-name of the widget
* @param mixed &$value the extension returns here it's input, if there's any
* @param mixed &$extension_data persistent storage between calls or pre- and post-process
* @param boolean &$loop can be set to true to request a re-submision of the form/dialog
* @param object &$tmpl the eTemplate the widget belongs too
* @param mixed &value_in the posted values (already striped of magic-quotes)
* @return boolean true if $value has valid content, on false no content will be returned!
*/
function post_process($name,&$value,&$extension_data,&$loop,&$tmpl,$value_in)
{
//echo "<p>link_widget::post_process('$name',value=".print_r($value,true).",ext=".print_r($extension_data,true).",$loop,,value_in=".print_r($value_in,true)."</p>\n";
$buttons = array('search','create','new','upload','attach');
while (!$button && list(,$bname) = each($buttons))
{
$button = $value[$bname] ? $bname : '';
}
if (is_array($value['unlink']))
{
$button = 'unlink';
list($unlink) = @each($value['unlink']);
}
unset($value[$button]);
unset($value['msg']);
unset($extension_data['msg']);
if (is_array($extension_data))
{
$value = is_array($value) ? array_merge($extension_data,$value) : $extension_data;
}
if ($button && $this->debug)
{
echo "<p>start: link_widget[$name]::post_process: button='$button', unlink='$unlink', value ="; _debug_array($value);
}
switch ($button)
{
case 'create':
if ($value['to_app']) // make the link
{
$link_id = $this->link->link($value['to_app'],$value['to_id'],
$value['app'],$value['id'],$value['remark']);
$value['remark'] = '';
if (isset($value['primary']) && !$value['anz_links'] )
{
$value['primary'] = $link_id;
}
}
// fall-trough
case 'search':
case 'new':
$extension_data = $value;
$loop = True;
break;
case 'attach':
if (is_array($value['file']) && $value['to_app'] &&
!empty($value['file']['tmp_name']) && $value['file']['tmp_name'] != 'none')
{
if (!$value['to_id'] || is_array($value['to_id'])) // otherwise the webserver deletes the file
{
move_uploaded_file($value['file']['tmp_name'],$value['file']['tmp_name'].'+');
$value['file']['tmp_name'] .= '+';
}
$link_id = $this->link->link($value['to_app'],$value['to_id'],
$this->link->vfs_appname,$value['file'],$value['remark']);
$value['remark'] = '';
if (isset($value['primary']) && !$value['anz_links'] )
{
$value['primary'] = $link_id;
}
unset($value['file']);
}
else
{
$value['msg'] = 'You need to select a file first!';
}
$extension_data = $value;
$loop = True;
break;
case 'unlink':
if ($this->debug)
{
//echo "<p>unlink(link-id=$unlink,$value[to_app],$value[to_id])</p>\n";
if (is_array($value['to_id'])) _debug_array($value['to_id']);
}
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$this->link->unlink2($unlink,$value['to_app'],$value['to_id']);
if (is_array($value['to_id']))
{
$extension_data['to_id'] = $value['to_id']; // else changes from unlink get lost
}
$loop = True;
break;
}
$value['button'] = $button;
if ($this->debug)
{
echo "<p>end: link_widget[$name]::post_process: value ="; _debug_array($value);
}
return True;
}
}