class.ilButtonBase.php

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<?php
require_once('./Services/UIComponent/Toolbar/interfaces/interface.ilToolbarItem.php');
 
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */
 
abstract class ilButtonBase implements ilToolbarItem
{
    protected $lng;
 
    protected $type; // [int]
    protected $id; // [string]
    protected $caption; // [string]
    protected $caption_is_lng_id; // [bool]
    protected $primary; // [bool]
    protected $omit_prevent_double_submission; // [bool]
    protected $onclick; // [string]
    protected $acc_key; // [string]
    protected $disabled; // [bool]
    protected $css = array(); // [array]
    
    protected $apply_default_css = true;
 
    const TYPE_SUBMIT = 1;
    const TYPE_LINK = 2;
    const TYPE_SPLIT = 3;
    const TYPE_BUTTON = 4;
    
    protected function __construct($a_type)
    {
        global $DIC;
 
        $this->lng = $DIC->language();
        $this->setType($a_type);
    }
    
    public function __clone()
    {
        $this->setId(null);
    }
    
    abstract public static function getInstance();
    
    
    //
    // properties
    //
    
    protected function setType($a_value)
    {
        $this->type = (int) $a_value;
    }
    
    public function getType()
    {
        return $this->type;
    }
        
    public function setId($a_value)
    {
        $this->id = $a_value;
    }
    
    public function getId()
    {
        return $this->id;
    }
    
    public function setCaption($a_value, $a_is_lng_id = true)
    {
        $this->caption = $a_value;
        $this->caption_is_lng_id = (bool) $a_is_lng_id;
    }
    
    public function getCaption($a_translate = true)
    {
        $lng = $this->lng;
        
        $caption = $this->caption;
        
        if ($this->caption_is_lng_id &&
            (bool) $a_translate) {
            $caption = $lng->txt($caption);
        }
    
        return $caption;
    }
 
    public function setPrimary($a_value)
    {
        $this->primary = (bool) $a_value;
    }
    
    public function isPrimary()
    {
        return $this->primary;
    }
    
    public function setOmitPreventDoubleSubmission($a_value)
    {
        $this->omit_prevent_double_submission = (bool) $a_value;
    }
    
    public function getOmitPreventDoubleSubmission()
    {
        return $this->omit_prevent_double_submission;
    }
    
    public function setOnClick($a_value)
    {
        $this->onclick = trim($a_value);
    }
    
    public function getOnClick()
    {
        return $this->onclick;
    }
    
    public function setAccessKey($a_value)
    {
        $this->acc_key = trim($a_value);
    }
    
    public function getAccessKey()
    {
        return $this->acc_key;
    }
    
    public function setDisabled($a_value)
    {
        $this->disabled = (bool) $a_value;
    }
    
    public function isDisabled()
    {
        return $this->disabled;
    }
    
    public function addCSSClass($a_value)
    {
        $this->css[] = $a_value;
    }
    
    public function getCSSClasses()
    {
        return $this->css;
    }
    
    
    //
    // render
    //
    
    protected function gatherCssClasses()
    {
        $css = array_unique($this->getCSSClasses());
    
        if ($this->isPrimary()) {
            $css[] = "btn-primary";
        }
        if ($this->getOmitPreventDoubleSubmission()) {
            $css[] = "omitPreventDoubleSubmission";
        }
        
        return implode(" ", $css);
    }
    
    protected function renderAttributesHelper(array $a_attr)
    {
        $res = array();
        
        foreach ($a_attr as $id => $value) {
            if (trim($value)) {
                $res[] = strtolower(trim($id)) . '="' . $value . '"';
            }
        }
        
        if (sizeof($res)) {
            return " " . implode(" ", $res);
        }
    }
    
    protected function renderAttributes(array $a_additional_attr = null)
    {
        $attr = array();
        $attr["id"] = $this->getId();
        $attr["class"] = $this->gatherCssClasses();
        $attr["onclick"] = $this->getOnClick();
        
        if ($this->getAccessKey()) {
            include_once("./Services/Accessibility/classes/class.ilAccessKey.php");
            $attr["accesskey"] = ilAccessKey::getKey($this->getAccessKey());
        }
        
        if ($this->isDisabled()) {
            $attr["disabled"] = "disabled";
        }
        
        if (sizeof($a_additional_attr)) {
            $attr = array_merge($attr, $a_additional_attr);
        }
        
        return $this->renderAttributesHelper($attr);
    }
    
    protected function prepareRender()
    {
        if ($this->applyDefaultCss()) {
            $this->addCSSClass("btn");
            $this->addCSSClass("btn-default");
        }
    }
 
    public function applyDefaultCss($apply_default_css = null)
    {
        if (null === $apply_default_css) {
            return $this->apply_default_css;
        }
        
        $this->apply_default_css = $apply_default_css;
    }
     
    abstract public function render();
 
 
    public function getToolbarHTML()
    {
        return $this->render();
    }
}