[Chameleon] another widget that works

[huub fleuren]

Hallo list,

If you remember, i contributed two widgets that worked, partly,
earlier today. I asked everybody why the map was updated but the
legend list was not.

Well i have here another widget, that will remove the selected layer
from the map. Basically is does the same thing. Except that the
LayerOrder widgets use
           $oMap->moveLayerDown($i);
           and
           $oMap->moveLayerUp($i);
and this one uses
           $oLayer->set("status",MS_DELETE);

           
and guess what... the legend list is updated correctly.

(In an older version of chameleon it happened only once. I swear. In a
later version it seemes to be stable)


the tag

<CWC2
     TYPE="RemoveLayer"
     Image="images/icon_remove.png"
     ImageTip="Remove Layer"
     TextButtonWidth="24"
     TextButtonHeight="24"
     Label=""/>



the listing (because it works better).



<?php
/**
 * RemoveLayer Widget class
 *
 * @project     CWC2
 * @revision    $Id: RemoveLayer.widget.php, v 1 2003/11/25 16:49:46 
 * @purpose     RemoveLayer Widget class
 * @author      DM Solutions Group (assefa@dmsolutions.ca, huub@geodan.nl)
 * @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("NavTool.php");
include_once("TextButton.php");

/**
 * RemoveLayer
 *
 * @desc Removes a SELECTED_LAYER (SelectLayer.Widget) from the map
 */
class RemoveLayer extends CWCWidget
{

    /**
     * RemoveLayer
     *
     * Constructor for the RemoveLayer
     */
    function RemoveLayer()
    {
        // invoke constructor of parent
        parent::CWCWidget();
        $this->moParent =& $oParent;

        // set the description for this widget
        $this->szWidgetDescription = <<<EOT
See alse the UpdateMap Widget
The RemoveLayer widget will cause the selected layer to disappear from the map
EOT;

        $this->moTextButton = new CWCTextButton($this);
    }

    function InitDefaults()
    {
        $this->moTextButton->InitDefaults();
    }

    /**
     * GetHTMLHiddenVariables
     *
     * Return HTML hidden variables.
     */
    function GetHTMLHiddenVariables()
    {
        $szVariable = "REMOVE_LAYER";
        $szValue = " <INPUT TYPE=HIDDEN NAME=$szVariable VALUE=\"0\">";
        $aReturn[$szVariable] = $szValue;
        return $aReturn;
    }

    /**
     * GetJavascriptFunctions
     *
     * Return the Javacriptfunctions needed by the widget.
     */
    function GetJavascriptFunctions()
    {
        $aReturn = array();

        $szJsFunctionName = "clickRemoveLayer";
        $szFunction = <<<EOT
/**
 * {$szJsFunctionName}
 * called when the user clicks the RemoveLayer icon
 */

function {$szJsFunctionName}()
{
    with({$this->mszHTMLForm})
    {
       REMOVE_LAYER.value = "1";
       submit();
    }
    return;
}

EOT;
        $aReturn[$szJsFunctionName] = $szFunction;

        return $aReturn;
    }

    /**
     * DrawPublish
     *
     * Return the HTML code using the name in the map file and the
     * parameters of the CWC tag.
     */
    function DrawPublish()
    {
        if (!$this->mbVisible)
            return "<!-- RemoveLayer widget hidden -->";
        $this->moTextButton->SetOnClickEvent( "clickRemoveLayer()" );
        return $this->moTextButton->DrawPublish();
    }
    /**
     * ParseURL
     *
     * Look for selected layers and move them UP
     */
    function  ParseURL()
    {

        if (isset($this->moURLArray['REMOVE_LAYER']))
        {
            if ($this->moURLArray['REMOVE_LAYER'] == "1")
            {
                if (isset($this->moURLArray['SELECTED_LAYERS']))
                {
                    if (strlen($this->moURLArray['SELECTED_LAYERS']) > 0)
                    {
                        $szSelectedLayers = $this->moURLArray['SELECTED_LAYERS'] ;
                        $oMap = $this -> moMapObject -> oMap;
                        for($i=0; $i < $oMap->numlayers; $i++)
                        {
                            $oLayer = $oMap->getLayer($i);
                            if ( $oLayer->name == $szSelectedLayers )
                            {
                              $oLayer->set("status",MS_DELETE);
                            }
                        }
                    }
                }   
            }
        }
    }
}

?>

  

-- 


Huub Fleuren
Geodan IT Vestiging Zuid
Buitenhaven 27A
5711 TP 's-Hertogenbosch
huub@geodan.nl
Tel. +31 (0)73 - 6925 160
Fax. +31 (0)73 - 6925 150
Website http://www.vz.geodan.nl/

--

Geodan IT b.v.
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