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feedizer-php/htdocs/libraries/formsgeneration/form_linked_select.php

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PHP
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2015-11-13 23:51:46 +01:00
<?php
/*
*
* @(#) $Id: form_linked_select.php,v 1.18 2012/04/19 10:02:00 mlemos Exp $
*
*/
class form_linked_select_class extends form_custom_class
{
var $select="";
var $group="";
var $switch_group="";
var $linked_input="";
var $selected_group="";
var $groups=array();
var $server_validate=0;
var $multiple=0;
var $dynamic=0;
var $default_dynamic=0;
var $group_parameter="___group";
Function GetGroupOptions(&$options,$group)
{
if(IsSet($this->groups[$group]))
$options=$this->groups[$group];
else
Unset($options);
return("");
}
Function GetGroups(&$groups)
{
$groups=array();
Reset($this->groups);
for($g=0;$g<count($this->groups);$g++)
{
$groups[]=strval(Key($this->groups));
Next($this->groups);
}
return("");
}
Function ValidateGroups(&$arguments)
{
if(!IsSet($arguments["Groups"])
|| GetType($arguments["Groups"])!="array")
return("it were not specified the groups of options");
$this->groups=$arguments["Groups"];
if(!IsSet($this->groups[$this->selected_group]))
return("the current linked input value does not match any of the select options groups");
if(!IsSet($this->groups[$this->selected_group]))
{
if((!IsSet($arguments["Group"])
|| !IsSet($arguments["Groups"][$arguments["Group"]])))
return("it was not specified a valid group for the current options");
$this->selected_group=$arguments["Group"];
}
UnSet($arguments["Groups"]);
UnSet($arguments["Group"]);
return("");
}
Function AddInput(&$form, $arguments)
{
if(!IsSet($arguments["LinkedInput"]))
return("it was not specified a valid input to link the select input");
$this->linked_input=$arguments["LinkedInput"];
$this->selected_group=$form->GetInputValue($this->linked_input);
if(strlen($error=$this->ValidateGroups($arguments)))
return($error);
$this->dynamic=(IsSet($arguments["Dynamic"]) ? intval($arguments["Dynamic"]) : $this->default_dynamic);
if(!$this->dynamic
&& (IsSet($arguments["AutoWidthLimit"])
|| IsSet($arguments["AutoHeightLimit"])))
{
if(strlen($error=$this->GetGroups($groups)))
return($error);
$w=$h=0;
for($g=0;$g<count($groups);$g++)
{
$group=$groups[$g];
if(strlen($error=$this->GetGroupOptions($options,$group)))
return($error);
Reset($options);
for($o=0;$o<count($options);$o++)
{
$option=strval(Key($options));
$w=max($w,strlen($options[$option]));
Next($options);
}
$h=max($h,$o);
}
if(IsSet($arguments["AutoWidthLimit"]))
{
if($arguments["AutoWidthLimit"]>0)
$w=min($w+1,$arguments["AutoWidthLimit"]);
$arguments["STYLE"]="width: ".strval($w)."em".(IsSet($arguments["STYLE"]) ? "; ".$arguments["STYLE"] : "");
}
if(IsSet($arguments["AutoHeightLimit"]))
{
if($arguments["AutoHeightLimit"]>0)
$h=min($h,$arguments["AutoHeightLimit"]);
$arguments["SIZE"]=strval($h);
}
}
UnSet($arguments["Dynamic"]);
UnSet($arguments["AutoWidthLimit"]);
UnSet($arguments["AutoHeightLimit"]);
if(strlen($error=$this->GetGroupOptions($selected_group,$this->selected_group)))
return($error);
$select_arguments=$arguments;
UnSet($select_arguments["LinkedInput"]);
$this->select=$this->GenerateInputID($form, $this->input, "select");
$this->group=$this->GenerateInputID($form, $this->input, "group");
$this->switch_group=$this->GenerateInputID($form, $this->input, "switch_group");
$select_arguments["NAME"]=$select_arguments["ID"]=$this->focus_input=$this->select;
$select_arguments["TYPE"]="select";
$select_arguments["OPTIONS"]=$selected_group;
$select_arguments["DiscardInvalidValues"]=0;
$this->multiple=IsSet($arguments["MULTIPLE"]);
if($this->multiple)
{
$select_arguments["MULTIPLE"]=1;
if(!IsSet($select_arguments["SELECTED"]))
$select_arguments["SELECTED"]=array();
}
else
UnSet($select_arguments["MULTIPLE"]);
UnSet($select_arguments["CustomClass"]);
if(strlen($error=$form->AddInput($select_arguments))==0
&& strlen($error=$form->AddInput(array(
"TYPE"=>"hidden",
"ID"=>$this->group,
"NAME"=>$this->group,
"VALUE"=>$this->selected_group
)))==0)
$error=$form->Connect($this->linked_input, $this->input, "ONCHANGE", "SwitchGroup", array("GroupProperty"=>"VALUE"));
return($error);
}
Function AddInputPart(&$form)
{
$eol=$form->end_of_line;
$b="";
$javascript="<script type=\"text/javascript\" defer=\"defer\">".$eol."<!--\n";
if($this->dynamic)
{
$javascript.="var ".$this->switch_group."_g=null;".$eol;
$javascript.="var ".$this->switch_group."_f=null;".$eol;
$javascript.="var ".$this->switch_group."_n=null;".$eol;
}
$javascript.="function ".$this->switch_group."(".($this->dynamic ? "" : "g,f").")".$b."{".$b;
$javascript.="var n, o, i, s, a, b, bi;".$b;
if($this->dynamic)
$javascript.="var n=".$this->switch_group."_n;".$b;
else
{
if(strlen($error=$this->GetGroups($groups)))
return($error);
for($g=0, $append="";$g<count($groups); $g++)
{
$group=$groups[$g];
if($g>0)
$javascript.="}".$b."else".$b."{".$b;
$javascript.="if(g==".$form->EncodeJavascriptString($group).")".$b."{".$b."n=[";
$append.="}".$b;
if(strlen($error=$this->GetGroupOptions($options,$group)))
return($error);
Reset($options);
for($o=0;$o<count($options);$o++)
{
$option=strval(Key($options));
if($o>0)
$javascript.=",";
$javascript.=$form->EncodeJavascriptString($options[$option]).",".$form->EncodeJavascriptString($option);
Next($options);
}
$javascript.="]".$b;
}
$javascript.="}".$b."else".$b."{".$b."n=null".$b.$append;
}
$javascript.="if(n!=null)".$b."{".$b;
if($this->dynamic)
$javascript.="var g=".$this->switch_group."_g;".$b."f=".$this->switch_group."_f;".$b;
$javascript.="s=f[".$form->EncodeJavascriptString($this->select)."];".$b."o=s.options;".$b;
if(!$this->multiple)
$javascript.="bi=bi=s.selectedIndex;".$b."if(bi>=0) { b=o[bi].value };".$b;
$javascript.="i=0;".$b."while(i<n.length)".$b."{".$b."o[i/2]=new Option(n[i],n[i+1]);".$b."i=i+2;".$b."}".$b."while(i<o.length*2)".$b."{".$b."o[i/2]=null".$b."}".$b."f[".$form->EncodeJavascriptString($this->group)."].value=g;".$b;
if(!$this->multiple)
$javascript.="o[0].selected=true;".$b."a=s.options[ai=s.selectedIndex].value;".$b."if(bi>=0 && a!=b && s.onchange) s.onchange();".$b;
$javascript.="}".$b;
if($this->dynamic)
$javascript.="else".$b."{".$b."setTimeout('".$this->switch_group."()',10)".$b."}".$b;
$javascript.="}".$eol."// -->".$eol."</script>";
if($this->dynamic)
$javascript.="<iframe id=\"".$this->switch_group."_i\" width=\"0\" height=\"0\" frameborder=\"0\"></iframe>";
if(strlen($error=$form->AddDataPart($javascript))==0
&& strlen($error=$form->AddInputPart($this->select))==0)
$error=$form->AddInputPart($this->group);
return($error);
}
Function GetInputValue(&$form)
{
return($form->GetInputValue($this->select));
}
Function Connect(&$form, $to, $event, $action, &$context)
{
return($form->Connect($this->select, $to, $event, $action, $context));
}
Function GetJavascriptConnectionAction(&$form, $form_object, $from, $event, $action, &$context, &$javascript)
{
switch($action)
{
case "SwitchGroup":
$property=(IsSet($context["GroupProperty"]) ? $context["GroupProperty"] : "VALUE");
if(strcmp($property, "VALUE"))
return("it is not supported to switch to a group defined by property ".$property);
$value=$form->GetJavascriptInputValue($form_object, $from);
if(strlen($value)==0)
return("it was not possible to determine how to retrieve ".$property." value");
if($this->dynamic)
{
if(strlen($error=$form->GetInputEventURL($this->input,"getoptions",array($this->group_parameter=>"GROUP"),$iframe_url)))
return($error);
$javascript="if(document.getElementById && (f=document.getElementById('".$this->switch_group."_i'))){g=".$value.";".$this->switch_group."_g=g;".$this->switch_group."_f=".$form_object.";".$this->switch_group."_n=null;"."g=escape(g);while((p=g.indexOf('+'))!=-1){g=g.substring(0,p)+'%2B'+g.substring(p+1,g.length)}f.src='".str_replace("GROUP", "'+g+'", $iframe_url)."';setTimeout('".$this->switch_group."()',10)}";
}
else
$javascript=$this->switch_group."(".$value.",".$form_object.")";
break;
default:
return($this->DefaultGetJavascriptConnectionAction($form, $form_object, $from, $event, $action, $context, $javascript));
}
return("");
}
Function LoadInputValues(&$form, $submitted)
{
$group=$form->GetInputValue($this->linked_input);
$selected_group=$form->GetInputValue($this->group);
$this->GetGroupOptions($options,$group);
if(!IsSet($options)
&& strcmp($group,$selected_group))
{
$group=$selected_group;
$this->GetGroupOptions($options,$group);
}
if(IsSet($options))
{
if($this->multiple)
{
$selected=$form->GetInputValue($this->select);
for($option=0; $option<count($selected); $option++)
{
if(!IsSet($options[$selected[$option]]))
break;
}
if($option<count($selected))
{
$selected=array();
$group=$this->selected_group;
$this->GetGroupOptions($options,$group);
}
else
$this->selected_group=$group;
$form->SetSelectOptions($this->select, $options, $selected);
}
else
{
$option=$form->GetInputValue($this->select);
if(IsSet($options[$option]))
{
$this->selected_group=$group;
$form->SetSelectOptions($this->select, $options, array($option));
}
else
{
$this->GetGroupOptions($options,$this->selected_group);
Reset($options);
$option=Key($options);
$form->SetInputValue($this->select, $option);
}
}
}
if(strcmp($group, $selected_group))
$form->SetInputValue($this->group, $this->selected_group=$group);
return('');
}
Function HandleEvent(&$form, $event, $parameters, &$processed)
{
switch($event)
{
case "getoptions":
if($this->dynamic)
{
if(!IsSet($parameters[$this->group_parameter])
&& GetType($parameters[$this->group_parameter])=="string")
return("the group parameter is not being passed to the linked select input getoptions event handler");
if(strlen($error=$this->GetGroupOptions($g,$parameters[$this->group_parameter])))
return($error);
$c=count($g);
$v="";
for($o=0;$o<$c;$o++)
{
if($o>0)
$v.=",\n";
$k=Key($g);
$v.=$form->EncodeJavascriptString($g[$k]).",".$form->EncodeJavascriptString($k);
Next($g);
}
Header("Content-Type: text/html");
echo "<html><head><title>getoptions</title><script type=\"text/javascript\"><!--\nfunction l()\n{\nparent.".$this->switch_group."_n=[\n".$v."\n];\n}\n// -->\n</script></head><body onload=\"l()\"></body></html>";
$processed=1;
break;
}
default:
return($this->DefaultHandleEvent($form,$event,$parameters,$processed));
}
return("");
}
Function GetInputProperty(&$form, $property, &$value)
{
switch($property)
{
case "SelectedOption":
return($form->GetInputProperty($this->select, $property, $value));
default:
return($this->DefaultGetInputProperty($form, $property, $value));
}
}
Function GetJavascriptInputValue(&$form, $form_object)
{
return($form->GetJavascriptInputValue($form_object, $this->select));
}
};
?>