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<?php
/*
* $Id: NestedElementHandler.php 552 2009-08-29 12:18:13Z mrook $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
include_once 'phing/IntrospectionHelper.php';
include_once 'phing/TaskContainer.php';
/**
* The nested element handler class.
*
* This class handles the occurance of runtime registered tags like
* datatypes (fileset, patternset, etc) and it's possible nested tags. It
* introspects the implementation of the class and sets up the data structures.
*
* @author Andreas Aderhold <andi@binarycloud.com>
* @copyright 2001,2002 THYRELL. All rights reserved
* @version $Revision: 552 $ $Date: 2009-08-29 14:18:13 +0200 (Sat, 29 Aug 2009) $
* @access public
* @package phing.parser
*/
class NestedElementHandler extends AbstractHandler {
/**
* Reference to the parent object that represents the parent tag
* of this nested element
* @var object
*/
private $parent;
/**
* Reference to the child object that represents the child tag
* of this nested element
* @var object
*/
private $child;
/**
* Reference to the parent wrapper object
* @var object
*/
private $parentWrapper;
/**
* Reference to the child wrapper object
* @var object
*/
private $childWrapper;
/**
* Reference to the related target object
* @var object the target instance
*/
private $target;
/**
* Constructs a new NestedElement handler and sets up everything.
*
* @param object the ExpatParser object
* @param object the parent handler that invoked this handler
* @param object the ProjectConfigurator object
* @param object the parent object this element is contained in
* @param object the parent wrapper object
* @param object the target object this task is contained in
* @access public
*/
function __construct($parser, $parentHandler, $configurator, $parent, $parentWrapper, $target) {
parent::__construct($parser, $parentHandler);
$this->configurator = $configurator;
if ($parent instanceof TaskAdapter) {
$this->parent = $parent->getProxy();
} else {
$this->parent = $parent;
}
$this->parentWrapper = $parentWrapper;
$this->target = $target;
}
/**
* Executes initialization actions required to setup the data structures
* related to the tag.
* <p>
* This includes:
* <ul>
* <li>creation of the nested element</li>
* <li>calling the setters for attributes</li>
* <li>adding the element to the container object</li>
* <li>adding a reference to the element (if id attribute is given)</li>
* </ul>
*
* @param string the tag that comes in
* @param array attributes the tag carries
* @throws ExpatParseException if the setup process fails
* @access public
*/
function init($propType, $attrs) {
$configurator = $this->configurator;
$project = $this->configurator->project;
// introspect the parent class that is custom
$parentClass = get_class($this->parent);
$ih = IntrospectionHelper::getHelper($parentClass);
try {
if ($this->parent instanceof UnknownElement) {
$this->child = new UnknownElement(strtolower($propType));
$this->parent->addChild($this->child);
} else {
$this->child = $ih->createElement($project, $this->parent, strtolower($propType));
}
$configurator->configureId($this->child, $attrs);
if ($this->parentWrapper !== null) {
$this->childWrapper = new RuntimeConfigurable($this->child, $propType);
$this->childWrapper->setAttributes($attrs);
$this->parentWrapper->addChild($this->childWrapper);
} else {
$configurator->configure($this->child, $attrs, $project);
$ih->storeElement($project, $this->parent, $this->child, strtolower($propType));
}
} catch (BuildException $exc) {
throw new ExpatParseException("Error initializing nested element <$propType>", $exc, $this->parser->getLocation());
}
}
/**
* Handles character data.
*
* @param string the CDATA that comes in
* @throws ExpatParseException if the CDATA could not be set-up properly
* @access public
*/
function characters($data) {
$configurator = $this->configurator;
$project = $this->configurator->project;
if ($this->parentWrapper === null) {
try {
$configurator->addText($project, $this->child, $data);
} catch (BuildException $exc) {
throw new ExpatParseException($exc->getMessage(), $this->parser->getLocation());
}
} else {
$this->childWrapper->addText($data);
}
}
/**
* Checks for nested tags within the current one. Creates and calls
* handlers respectively.
*
* @param string the tag that comes in
* @param array attributes the tag carries
* @access public
*/
function startElement($name, $attrs) {
//print(get_class($this) . " name = $name, attrs = " . implode(",",$attrs) . "\n");
if ($this->child instanceof TaskContainer) {
// taskcontainer nested element can contain other tasks - no other
// nested elements possible
$tc = new TaskHandler($this->parser, $this, $this->configurator, $this->child, $this->childWrapper, $this->target);
$tc->init($name, $attrs);
} else {
$neh = new NestedElementHandler($this->parser, $this, $this->configurator, $this->child, $this->childWrapper, $this->target);
$neh->init($name, $attrs);
}
}
}
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