Files
portal-legacy/lib/symfony/view/sfView.class.php
Chris Sewell cf140a2e97 initial commit
2012-11-28 03:55:08 -05:00

670 lines
17 KiB
PHP
Executable File

<?php
/*
* This file is part of the symfony package.
* (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
* (c) 2004-2006 Sean Kerr.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
*
* A view represents the presentation layer of an action. Output can be
* customized by supplying attributes, which a template can manipulate and
* display.
*
* @package symfony
* @subpackage view
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @author Sean Kerr <skerr@mojavi.org>
* @version SVN: $Id: sfView.class.php 3250 2007-01-12 20:09:11Z fabien $
*/
abstract class sfView
{
/**
* Show an alert view.
*/
const ALERT = 'Alert';
/**
* Show an error view.
*/
const ERROR = 'Error';
/**
* Show a form input view.
*/
const INPUT = 'Input';
/**
* Skip view execution.
*/
const NONE = 'None';
/**
* Show a success view.
*/
const SUCCESS = 'Success';
/**
* Skip view rendering but output http headers
*/
const HEADER_ONLY = 'Headers';
/**
* Render the presentation to the client.
*/
const RENDER_CLIENT = 2;
/**
* Do not render the presentation.
*/
const RENDER_NONE = 1;
/**
* Render the presentation to a variable.
*/
const RENDER_VAR = 4;
protected
$context = null,
$decorator = false,
$decoratorDirectory = null,
$decoratorTemplate = null,
$directory = null,
$componentSlots = array(),
$template = null,
$escaping = null,
$escapingMethod = null,
$attributeHolder = null,
$parameterHolder = null,
$moduleName = '',
$actionName = '',
$viewName = '',
$extension = '.php';
/**
* Executes any presentation logic and set template attributes.
*/
abstract function execute();
/**
* Configures template.
*/
abstract function configure();
/**
* Retrieves the current application context.
*
* @return sfContext The current sfContext instance
*/
public final function getContext()
{
return $this->context;
}
/**
* Retrieves this views decorator template directory.
*
* @return string An absolute filesystem path to this views decorator template directory
*/
public function getDecoratorDirectory()
{
return $this->decoratorDirectory;
}
/**
* Retrieves this views decorator template.
*
* @return string A template filename, if a template has been set, otherwise null
*/
public function getDecoratorTemplate()
{
return $this->decoratorTemplate;
}
/**
* Retrieves this view template directory.
*
* @return string An absolute filesystem path to this views template directory
*/
public function getDirectory()
{
return $this->directory;
}
/**
* Retrieves the template engine associated with this view.
*
* Note: This will return null for PHPView instances.
*
* @return mixed A template engine instance
*/
abstract function getEngine();
/**
* Retrieves this views template.
*
* @return string A template filename, if a template has been set, otherwise null
*/
public function getTemplate()
{
return $this->template;
}
/**
* Gets the default escaping strategy associated with this view.
*
* The escaping strategy specifies how the variables get passed to the view.
*
* @return string the escaping strategy
*/
public function getEscaping()
{
return null === $this->escaping ? sfConfig::get('sf_escaping_strategy') : $this->escaping;
}
/**
* Returns the name of the function that is to be used as the escaping method.
*
* If the escaping method is empty, then that is returned. The default value
* specified by the sub-class will be used. If the method does not exist (in
* the sense there is no define associated with the method) and exception is
* thrown.
*
* @return string The escaping method as the name of the function to use
*
* @throws <b>sfException</b> If the method does not exist
*/
public function getEscapingMethod()
{
$method = null === $this->escapingMethod ? sfConfig::get('sf_escaping_method') : $this->escapingMethod;
if (empty($method))
{
return $method;
}
if (!defined($method))
{
throw new sfException(sprintf('Escaping method "%s" is not available; perhaps another helper needs to be loaded in?', $method));
}
return constant($method);
}
/**
* Imports parameter values and error messages from the request directly as view attributes.
*
* @param array An indexed array of file/parameter names
* @param boolean Is this a list of files?
* @param boolean Import error messages too?
* @param boolean Run strip_tags() on attribute value?
* @param boolean Run htmlspecialchars() on attribute value?
*/
public function importAttributes($names, $files = false, $errors = true, $stripTags = true, $specialChars = true)
{
// alias $request to keep the code clean
$request = $this->context->getRequest();
// get our array
if ($files)
{
// file names
$array =& $request->getFiles();
}
else
{
// parameter names
$array =& $request->getParameterHolder()->getAll();
}
// loop through our parameter names and import them
foreach ($names as &$name)
{
if (preg_match('/^([a-z0-9\-_]+)\{([a-z0-9\s\-_]+)\}$/i', $name, $match))
{
// we have a parent
$parent = $match[1];
$subname = $match[2];
// load the file/parameter value for this attribute if one exists
if (isset($array[$parent]) && isset($array[$parent][$subname]))
{
$value = $array[$parent][$subname];
if ($stripTags)
$value = strip_tags($value);
if ($specialChars)
$value = htmlspecialchars($value);
$this->setAttribute($name, $value);
}
else
{
// set an empty value
$this->setAttribute($name, '');
}
}
else
{
// load the file/parameter value for this attribute if one exists
if (isset($array[$name]))
{
$value = $array[$name];
if ($stripTags)
$value = strip_tags($value);
if ($specialChars)
$value = htmlspecialchars($value);
$this->setAttribute($name, $value);
}
else
{
// set an empty value
$this->setAttribute($name, '');
}
}
if ($errors)
{
if ($request->hasError($name))
{
$this->setAttribute($name.'_error', $request->getError($name));
}
else
{
// set empty error
$this->setAttribute($name.'_error', '');
}
}
}
}
/**
* Initializes this view.
*
* @param sfContext The current application context
* @param string The module name for this view
* @param string The action name for this view
* @param string The view name
*
* @return boolean true, if initialization completes successfully, otherwise false
*/
public function initialize($context, $moduleName, $actionName, $viewName)
{
if (sfConfig::get('sf_logging_enabled'))
{
$context->getLogger()->info(sprintf('{sfView} initialize view for "%s/%s"', $moduleName, $actionName));
}
$this->moduleName = $moduleName;
$this->actionName = $actionName;
$this->viewName = $viewName;
$this->context = $context;
$this->attributeHolder = new sfParameterHolder();
$this->parameterHolder = new sfParameterHolder();
$this->parameterHolder->add(sfConfig::get('mod_'.strtolower($moduleName).'_view_param', array()));
$this->decoratorDirectory = sfConfig::get('sf_app_template_dir');
// include view configuration
$this->configure();
return true;
}
/**
* Retrieves attributes for the current view.
*
* @return sfParameterHolder The attribute parameter holder
*/
public function getAttributeHolder()
{
return $this->attributeHolder;
}
/**
* Retrieves an attribute for the current view.
*
* @param string Name of the attribute
* @param string Value of the attribute
* @param string The current namespace
*
* @return mixed Attribute
*/
public function getAttribute($name, $default = null, $ns = null)
{
return $this->attributeHolder->get($name, $default, $ns);
}
/**
* Returns true if the view have attributes.
*
* @param string Name of the attribute
* @param string Namespace for the current view
*
* @return mixed Attribute of the view
*/
public function hasAttribute($name, $ns = null)
{
return $this->attributeHolder->has($name, $ns);
}
/**
* Sets an attribute of the view.
*
* @param string Attribute name
* @param string Value for the attribute
* @param string Namespace for the current
*/
public function setAttribute($name, $value, $ns = null)
{
$this->attributeHolder->set($name, $value, $ns);
}
/**
* Retrieves the parameters for the current view.
*
* @return sfParameterHolder The parameter holder
*/
public function getParameterHolder()
{
return $this->parameterHolder;
}
/**
* Retrieves a parameter from the current view.
*
* @param string Parameter name
* @param string Default parameter value
* @param string Namespace for the current view
*
* @return mixed A parameter value
*/
public function getParameter($name, $default = null, $ns = null)
{
return $this->parameterHolder->get($name, $default, $ns);
}
/**
* Indicates whether or not a parameter exist for the current view.
*
* @param string Name of the paramater
* @param string Namespace for the current view
*
* @return boolean true, if the parameter exists otherwise false
*/
public function hasParameter($name, $ns = null)
{
return $this->parameterHolder->has($name, $ns);
}
/**
* Sets a parameter for the view.
*
* @param string Name of the parameter
* @param string The parameter value
* @param string Namespace for the current view
*/
public function setParameter($name, $value, $ns = null)
{
$this->parameterHolder->set($name, $value, $ns);
}
/**
* Indicates that this view is a decorating view.
*
* @return boolean true, if this view is a decorating view, otherwise false
*/
public function isDecorator()
{
return $this->decorator;
}
/**
* Sets the decorating mode for the current view.
*
* @param boolean Set the decorating mode for the view
*/
public function setDecorator($boolean)
{
$this->decorator = (boolean) $boolean;
}
/**
* Executes a basic pre-render check to verify all required variables exist
* and that the template is readable.
*
* @throws <b>sfRenderException</b> If the pre-render check fails
*/
protected function preRenderCheck()
{
if ($this->template == null)
{
// a template has not been set
$error = 'A template has not been set';
throw new sfRenderException($error);
}
$template = $this->directory.'/'.$this->template;
if (!is_readable($template))
{
// the template isn't readable
throw new sfRenderException(sprintf('The template "%s" does not exist in: %s', $template, $this->directory));
}
// check to see if this is a decorator template
if ($this->decorator)
{
$template = $this->decoratorDirectory.'/'.$this->decoratorTemplate;
if (!is_readable($template))
{
// the decorator template isn't readable
$error = 'The decorator template "%s" does not exist or is unreadable';
$error = sprintf($error, $template);
throw new sfRenderException($error);
}
}
}
/**
* Renders the presentation.
*
* When the controller render mode is sfView::RENDER_CLIENT, this method will
* render the presentation directly to the client and null will be returned.
*
* @param array An array with variables that will be extracted for the template
* If empty, the current actions var holder will be extracted
* @return string A string representing the rendered presentation, if
* the controller render mode is sfView::RENDER_VAR, otherwise null
*/
abstract function render($templateVars = null);
/**
* Sets the decorator template directory for this view.
*
* @param string An absolute filesystem path to a template directory
*/
public function setDecoratorDirectory($directory)
{
$this->decoratorDirectory = $directory;
}
/**
* Sets the escape caracter mode.
*
* @param string Escape code
*/
public function setEscaping($escaping)
{
$this->escaping = $escaping;
}
/**
* Sets the escaping method for the current view.
*
* @param string Method for escaping
*/
public function setEscapingMethod($method)
{
$this->escapingMethod = $method;
}
/**
* Sets the decorator template for this view.
*
* If the template path is relative, it will be based on the currently
* executing module's template sub-directory.
*
* @param string An absolute or relative filesystem path to a template
*/
public function setDecoratorTemplate($template)
{
if (sfToolkit::isPathAbsolute($template))
{
$this->decoratorDirectory = dirname($template);
$this->decoratorTemplate = basename($template);
}
else
{
$this->decoratorTemplate = $template;
}
if (!strpos($this->decoratorTemplate, '.'))
{
$this->decoratorTemplate .= $this->getExtension();
}
// set decorator status
$this->decorator = true;
}
/**
* Sets the template directory for this view.
*
* @param string An absolute filesystem path to a template directory
*/
public function setDirectory($directory)
{
$this->directory = $directory;
}
/**
* Sets the module and action to be executed in place of a particular template attribute.
*
* @param string A template attribute name
* @param string A module name
* @param string A component name
*/
public function setComponentSlot($attributeName, $moduleName, $componentName)
{
$this->componentSlots[$attributeName] = array();
$this->componentSlots[$attributeName]['module_name'] = $moduleName;
$this->componentSlots[$attributeName]['component_name'] = $componentName;
}
/**
* Indicates whether or not a component slot exists.
*
* @param string The component slot name
*
* @return boolean true, if the component slot exists, otherwise false
*/
public function hasComponentSlot($name)
{
return isset($this->componentSlots[$name]);
}
/**
* Gets a component slot
*
* @param string The component slot name
*
* @return array The component slot
*/
public function getComponentSlot($name)
{
if (isset($this->componentSlots[$name]) && $this->componentSlots[$name]['module_name'] && $this->componentSlots[$name]['component_name'])
{
return array($this->componentSlots[$name]['module_name'], $this->componentSlots[$name]['component_name']);
}
return null;
}
/**
* Sets the template for this view.
*
* If the template path is relative, it will be based on the currently
* executing module's template sub-directory.
*
* @param string An absolute or relative filesystem path to a template
*/
public function setTemplate($template)
{
if (sfToolkit::isPathAbsolute($template))
{
$this->directory = dirname($template);
$this->template = basename($template);
}
else
{
$this->template = $template;
}
}
/**
* Retrieves the current view extension.
*
* @return string The extension for current view.
*/
public function getExtension()
{
return $this->extension;
}
/**
* Sets an extension for the current view.
*
* @param string The extension name.
*/
public function setExtension($ext)
{
$this->extension = $ext;
}
/**
* Overloads a given method
*
* @param string Method name
* @param string Method arguments
*
* @return mixed User function callback
*
* @throws <b>sfException</b> If the call fails
*/
public function __call($method, $arguments)
{
if (!$callable = sfMixer::getCallable('sfView:'.$method))
{
throw new sfException(sprintf('Call to undefined method sfView::%s', $method));
}
array_unshift($arguments, $this);
return call_user_func_array($callable, $arguments);
}
}