<?php
/**
 * Link Widget class
 *
 * @project     CWC2
 * @revision    $Id:
 * @purpose     Link Popup Widget class
 * @author      DM Solutions Group (sfournier@dmsolutions.ca)
 * @copyright
 * <b>Copyright (c) 2002, DM Solutions Group Inc.</b>
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
include_once(dirname(__FILE__)."/../Widget.php");
include_once(dirname(__FILE__)."/../Button.php");

/**
 * a simple widget to link to another page
 */
class Link extends CWCWidget
{
    var $moButton;
    var $mbPopup = false;
    var $mszHref = null;
    var $mszLinkType = "HREF";
    var $maszJSFunctions = array();

    /**
     * construct a new link widget
     */
    function Link()
    {
        // invoke constructor of parent
        parent::CWCWidget();

        // set the description for this widget
        $this->szWidgetDescription = <<<EOT
The Link widget allows the template to display a button that will open an
arbitrary URL such as a help page for an application.
EOT;

        $this->moButton = new CWCButton($this);
        $this->maAttributes["APPENDGET"] = new BooleanAttribute(
                                                       "APPENDGET", false );
        $this->maAttributes["APPENDSID"] = new BooleanAttribute("APPENDSID", false );        
        $this->maAttributes["HREF"] = new StringAttribute( "HREF", false );
        $this->maAttributes["JSFUNCTION"] = new StringAttribute( "JSFUNCTION", false );
        $this->maAttributes["JSPARAMS"] = new StringAttribute( "JSPARAMS", false );
        $this->maAttributes["LINKTYPE"] = new StringAttribute( "LINKTYPE", true, array( "HREF", "JAVASCRIPT" ) );            
        $this->maAttributes["TARGET"] = new StringAttribute("TARGET", false );

        $this->maAttributes['DIV'] = new StringAttribute( "DIV", false );
        $this->mnMaturityLevel = MATURITY_TECHNICALRELEASE;
    }

    /**
     * initialize default values
     */
    function InitDefaults()
    {
        parent::InitDefaults();
        if ($this->mbVisible)
        {
            $this->moButton->InitDefaults();
            if (isset($this->maParams['LINKTYPE']))
            {
                $this->mszLinkType = strtoupper($this->maParams['LINKTYPE']);
            }
            
            if ($this->mszLinkType == "HREF")
            {
                $szHref = $this->maParams["HREF"];
    
                $aszHrefParams = array();
                if (strpos($szHref, "?") !== false)
                    $aszHrefParams = explode("&",substr(strstr($szHref, "?"), 1));
    
                if (isset($this->maParams["APPENDGET"]) &&
                    strcasecmp($this->maParams["APPENDGET"],"true") == 0)
                {
                    $szGET = "";
                    foreach($GLOBALS["_GET"] as $szKey => $szVal)
                    {
                        // Check all get var if it was set in user link
                        // dont overwrite it.
                        $bFound=false;
                        foreach($aszHrefParams as $szParams)
                        {
                            $aszParams = explode("=", $szParams);
                            if ($aszParams[0] == $szKey)
                                $bFound = true;
                        }
    
                        if (!$bFound)
                            $szGET .= "$szKey=".urlencode($szVal)."&";
                    }
    
                    if (substr($szHref, -1) == "?" ||
                        substr($szHref, -1) == "&")
                        $szHref .= $szGET;
                    else
                    if (strpos($szHref, "?") !== false)
                    {
                        $szHref .= "&$szGET";
                    }
                    else
                        $szHref .= "?$szGET";
                }
    
                if (isset($this->maParams["APPENDSID"]) &&
                    strcasecmp($this->maParams["APPENDSID"],"true") == 0)
                {
                    if (substr($szHref, -1) == "?" ||
                        substr($szHref, -1) == "&")
                        $szHref .= SID;
                    else
                    if (strpos($szHref, "?") !== false)
                        $szHref .= "&".SID;
                    else
                        $szHref .= "?".SID;
                }
    
                $szTarget = "";
                if (isset($this->maParams["TARGET"]))
                  $szTarget = $this->maParams["TARGET"];
                  
                $szJS = "var wh = window.open( '$szHref', '$szTarget' );\n";
                $szJS .= "wh.focus();\n";
    
                $szJSName = 'linkWidget'.$this->mnId;
                $this->maszJSFunctions[$szJSName] = <<<EOT
    
function {$szJSName}()
{
    {$szJS};
}
EOT;
                $this->moButton->SetOnClick( 'linkWidget'.$this->mnId );
            }
            elseif ($this->mszLinkType == "JAVASCRIPT")
            {
                if (isset($this->maParams['JSFUNCTION']))
                {
                    $szJS = "void";
                    $szJSParams = "0";
                    if ($this->maParams["JSFUNCTION"] != "")
                    {
                        $szJS = $this->maParams["JSFUNCTION"];
                        $szJSParams = "";
                    }
                    if (isset($this->maParams["JSPARAMS"]))
                    {
                        $szJSParams = $this->maParams["JSPARAMS"];
                    }
                    $this->moButton->SetOnClick( $szJS, $szJSParams );
                }
            }
        }
    }
    
    function ParseURL()
    {
        if ($this->mbVisible)
            return $this->moButton->ParseURL();
        else
            return true;
    }
    
    /**
     * return javascript functions
     */
    function GetJavascriptFunctions()
    {
        $aReturn = array();
        if ($this->mbVisible)
            $aReturn = array_merge($this->moButton->GetJavascriptFunctions(), $this->maszJSFunctions);
        return $aReturn;
    }

    /**
     * return javascript functions
     */
    function GetJavascriptIncludeFunctions()
    {
        $aResult = array();
        if ($this->mbVisible)
            $aResult = $this->moButton->GetJavascriptIncludeFunctions();
        return $aResult;
    }

    /**
     * return javascript variables
     */
    function GetJavascriptVariables()
    {
        $aResult = array();
        if ($this->mbVisible)
            $aResult =  $this->moButton->GetJavascriptVariables();
        return $aResult;
    }

    /**
     * return javascript onload functions
     */
    function GetJavascriptOnLoadFunctions()
    {
        $aResult = array();
        if ($this->mbVisible)
            $aResult = $this->moButton->GetJavascriptOnLoadFunctions();
        return $aResult;
    }
    
    /**
     * return javascript initialization funcitons
     */
    function GetJavascriptInitFunctions()
    {
        $aResult = array();
        if ($this->mbVisible)
            $aResult =  $this->moButton->GetJavascriptInitFunctions();
        return $aResult;
    }

    function GetHTMLHiddenVariables()
    {
        $aResult = array();
        if ($this->mbVisible)
            $aResult = $this->moButton->GetHTMLHiddenVariables();
        
        return $aResult;
    }

    /**
     * draw the link widget
     */
    function DrawPublish()
    {
        if (!$this->mbVisible)
            return "<!-- LinkWidget is hidden -->";

        
        $szReturn = $this->moButton->DrawPublish();
        
        return $szReturn;
    }
}
?>