mirror of
https://github.com/EGroupware/egroupware.git
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297 lines
8.8 KiB
PHP
297 lines
8.8 KiB
PHP
<?php
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/**
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* PHPGWAPI Dragdrop - generates javascript for Walter Zorns dragdrop class
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*
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* @link www.egroupware.org
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* @author Christian Binder <christian.binder@freakmail.de>
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* @copyright (c) 2006 by Christian Binder <christian.binder@freakmail.de>
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* @package phpgwapi
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @version $Id: class.dragdrop.inc.php 22783 2006-11-02 13:52:24Z jaytraxx $
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*/
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require_once(EGW_INCLUDE_ROOT. '/phpgwapi/inc/class.browser.inc.php');
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/**
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* General object containing the draggables and droppables
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*
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* @package phpgwapi
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* @author Christian Binder <christian.binder@freakmail.de>
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* @copyright (c) 2006 by Christian Binder <christian.binder@freakmail.de>
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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*/
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class dragdrop
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{
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/**
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* draggable Objects
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*
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* @var array
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*/
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var $draggables;
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/**
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* droppable Objects
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*
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* @var array
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*/
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var $droppables;
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/**
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* ensures that function setJSCode is only run once
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*
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* @var boolean
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*/
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var $setCodeDone = false;
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/**
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* JavaScript(s) to include which contains the actions while dragging or dropping
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*
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* @var array
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*/
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var $actionScripts;
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/**
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* enables class for all browsers - use this for testing still not validated browsers
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*
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* @var boolean
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*/
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var $browserTestMode = false;
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function dragdrop()
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{
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}
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/**
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* adds a Draggable javascript object
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*
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* @param string $name unique html id of the object
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* @param array $values=false optional associative array with values of the object
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* @param string $dragAction=false ActionScript executed while item is dragged e.g. calendar.myscript.mydrag
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* @param string $dropAction=false ActionScript executed when item is dropped e.g. calendar.myscript.mydrop
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* @return boolean true if all actions succeded, false otherwise
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*/
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function addDraggable($name,$values = false,$dragAction = false,$dropAction = false)
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{
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if(!$this->checkUnique($name)) { return false; }
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$this->draggables[] = array('name'=>$name,'values'=>$values,'dragAction'=>$this->registerActionScript($dragAction),'dropAction'=>$this->registerActionScript($dropAction));
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return true;
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}
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/**
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* adds a Droppable javascript object
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*
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* @param string $name unique html id of the object
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* @param array $values=false optional associative array with values of the object
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* @return boolean true if all actions succeded, false otherwise
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*/
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function addDroppable($name,$values = false)
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{
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if(!$this->checkUnique($name)) { return false; }
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$this->droppables[] = array('name'=>$name,'values'=>$values);
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return true;
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}
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/**
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* generates the appropriate JSCode for all defined objects
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*
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* @return boolean true if all actions succeed or false if the function was called more than once
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*/
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function setJSCode()
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{
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// check that dragdrop is enabled by prefs and that we have a supported browser
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if( !$GLOBALS['egw_info']['user']['preferences']['common']['enable_dragdrop'] ||
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!$this->validateBrowser()
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)
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{
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return false;
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}
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// this function can only be run once, so we check that at the beginning
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if($this->setCodeDone)
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{
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error_log('phpgwapi.dragdrop::setJSCode called more than once - aborting');
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return false;
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}
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$GLOBALS['egw_info']['flags']['need_footer'] .= "<!-- BEGIN JavaScript for wz_dragdrop.js -->\n";
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// include wz_dragdrop once
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if(!$GLOBALS['egw_info']['flags']['wz_dragdrop_included'])
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= '<script language="JavaScript" type="text/javascript" src="'.$GLOBALS['egw_info']['server']['webserver_url'].'/phpgwapi/js/wz_dragdrop/wz_dragdrop.js"></script>'."\n";
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$GLOBALS['egw_info']['flags']['wz_dragdrop_included'] = True;
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}
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// include actionScripts
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if(is_array($this->actionScripts))
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{
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foreach($this->actionScripts as $i => $actionScript)
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= "<script language='JavaScript' type='text/javascript' src='".$actionScript['file']."'></script>\n";
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}
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}
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// register all dragdrop elements to wz_dragdrop
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if(is_array($this->draggables))
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{
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foreach($this->draggables as $i=>$element)
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{
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$element_names_array[] = "\"".$element['name']."\"";
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}
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}
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if(is_array($this->droppables))
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{
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foreach($this->droppables as $i=>$element)
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{
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$element_names_array[] = "\"".$element['name']."\"";
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}
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}
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if(is_array($element_names_array))
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{
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$element_names=implode(",",$element_names_array);
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$GLOBALS['egw_info']['flags']['need_footer'] .= '<script language="JavaScript" type="text/javascript">SET_DHTML(SCROLL,TRANSPARENT,CURSOR_HAND,'.$element_names.');</script>'."\n";
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}
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// set special params for draggable elements
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if(is_array($this->draggables))
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= '<script language="JavaScript" type="text/javascript">'."\n";
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foreach($this->draggables as $i=>$element)
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{
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if(is_array($element['values']))
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{
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foreach($element['values'] as $val_name=>$val_value)
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{
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if($val_value)
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= 'dd.elements.'.$element['name'].'.my_'.$val_name.' = "'.$val_value.'";'."\n";
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}
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}
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}
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if($element['dragAction']) { $GLOBALS['egw_info']['flags']['need_footer'] .= 'dd.elements.'.$element['name'].'.setDragFunc('.$element['dragAction'].');'."\n"; }
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if($element['dropAction']) { $GLOBALS['egw_info']['flags']['need_footer'] .= 'dd.elements.'.$element['name'].'.setDropFunc('.$element['dropAction'].');'."\n"; }
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}
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$GLOBALS['egw_info']['flags']['need_footer'] .= '</script>'."\n";
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}
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// set special params for droppable elements
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if(is_array($this->droppables))
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= '<script language="JavaScript" type="text/javascript">'."\n";
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foreach($this->droppables as $i=>$element)
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{
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if(is_array($element['values']))
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{
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foreach($element['values'] as $val_name=>$val_value)
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{
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if($val_value)
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{
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$GLOBALS['egw_info']['flags']['need_footer'] .= 'dd.elements.'.$element['name'].'.my_'.$val_name.' = "'.$val_value.'";'."\n";
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}
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}
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}
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$GLOBALS['egw_info']['flags']['need_footer'] .= 'dd.elements.'.$element['name'].'.setDraggable(false);'."\n";
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}
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$GLOBALS['egw_info']['flags']['need_footer'] .= '</script>'."\n";
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}
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$GLOBALS['egw_info']['flags']['need_footer'] .= "<!-- END JavaScript for wz_dragdrop.js -->\n";
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return $this->setCodeDone = true;
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}
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/**
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* checks if the given name of an object is unique in all draggable AND droppable objects
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*
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* @param string $name unique html id of the object
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* @return boolean true if $name is unique, otherwise false
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*/
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function checkUnique($name)
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{
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if(is_array($this->draggables))
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{
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foreach($this->draggables as $i=>$element)
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{
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if($element['name'] == $name)
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{
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error_log("class.dragdrop.inc.php::addDraggable duplicate name for object '".$name."'");
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return false;
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}
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}
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}
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if(is_array($this->droppables))
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{
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foreach($this->droppables as $i=>$element)
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{
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if($element['name'] == $name)
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{
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error_log("class.dragdrop.inc.php::addDraggable duplicate name for object '".$name."'");
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return false;
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}
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}
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}
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return true;
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}
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/**
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* checks if the browser is validated to work with the dragdrop class
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* used to enable/disable this class for the clients browser
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*
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* @return boolean true if browser is validated, otherwise false
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*/
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function validateBrowser()
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{
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$clientBrowser = new browser();
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if($this->browserTestMode)
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{
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error_log('dragdrop::validateBrowser, agent: ' . $clientBrowser->get_agent());
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}
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foreach(array('MOZILLA') as $id=>$validatedBrowser)
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{
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if($this->browserTestMode || $clientBrowser->get_agent() == $validatedBrowser)
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{
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return true;
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}
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return false;
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}
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}
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/**
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* registers additional javascript file(s) which contain scripts for various object actions
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* and handles duplicates
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*
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* @param string $script script to register, e.g. 'calendar.dragdrop.moveEvent'
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* @return string $functionname if JavaScript file exists, otherwise false
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*/
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function registerActionScript($script)
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{
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list($appname,$scriptname,$functionname) = explode('.',$script);
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$script = $appname.".".$scriptname;
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$serverFile = EGW_INCLUDE_ROOT.'/'.$appname.'/js/'.$scriptname.'.js';
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$browserFile = $GLOBALS['egw_info']['server']['webserver_url'].'/'.$appname.'/js/'.$scriptname.'.js';
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// check if file exists otherwise exit
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if(!file_exists($serverFile))
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{
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return false;
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}
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// check duplicates
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if(is_array($this->actionScripts))
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{
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foreach($this->actionScripts as $i=>$actionScript)
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{
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if($actionScript['script'] == $script) { return $functionname; }
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}
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}
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$this->actionScripts[] = array('script' => $script,'file' => $browserFile);
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return $functionname;
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}
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}
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