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<?php
/**
* TKeyboard class file.
*
* @author Sergey Morkovkin <sergeymorkovkin@mail.ru> and Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2007 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Web.UI.WebControls
* @since 3.1.1
*/
/**
* Class TKeyboard.
*
* TKeyboard displays a virtual keyboard that users can click on to enter input in
* an associated text box. It helps to reduce the keyboard recording hacking.
*
* To use TKeyboard, write a template like following:
* <code>
* <com:TTextBox ID="PasswordInput" />
* <com:TKeyboard ForControl="PasswordInput" />
* </code>
*
* A TKeyboard control is associated with a {@link TTextBox} control by specifying {@link setForControl ForControl}
* to be the ID of that control. When the textbox is in focus, a virtual keyboard will pop up; and when
* the text box is losing focus, the keyboard will hide automatically. Set {@link setAutoHide AutoHide} to
* false to keep the keyboard showing all the time.
*
* The appearance of the keyboard can also be changed by specifying a customized CSS file via
* {@link setCssUrl CssUrl}. By default, the CSS class name for the keyboard is 'Keyboard'. This may
* also be changed by specifying {@link setKeyboardCssClass KeyboardCssClass}.
*
* @author Sergey Morkovkin <sergeymorkovkin@mail.ru> and Qiang Xue <qiang.xue@gmail.com>
* @version $Id$
* @since 3.1.1
*/
class TKeyboard extends TWebControl
{
/**
* @return string the ID path of the {@link TTextBox} control
*/
public function getForControl()
{
return $this->getViewState('ForControl','');
}
/**
* Sets the ID path of the {@link TTextBox} control.
* The ID path is the dot-connected IDs of the controls reaching from
* the keyboard's naming container to the target control.
* @param string the ID path
*/
public function setForControl($value)
{
$this->setViewState('ForControl', TPropertyValue::ensureString($value));
}
/**
* @return boolean whether the keyboard should be hidden when the textbox is not in focus. Defaults to true.
*/
public function getAutoHide()
{
return $this->getViewState('AutoHide', true);
}
/**
* @param boolean whether the keyboard should be hidden when the textbox is not in focus.
*/
public function setAutoHide($value)
{
$this->setViewState('AutoHide', TPropertyValue::ensureBoolean($value), true);
}
/**
* @return string the CSS class name for the keyboard <div> element. Defaults to 'Keyboard'.
*/
public function getKeyboardCssClass()
{
return $this->getViewState('KeyboardCssClass', 'Keyboard');
}
/**
* Sets a value indicating the CSS class name for the keyboard <div> element.
* Note, if you change this property, make sure you also supply a customized CSS file
* by specifying {@link setCssUrl CssUrl} which uses the new CSS class name for styling.
* @param string the CSS class name for the keyboard <div> element.
*/
public function setKeyboardCssClass($value)
{
$this->setViewState('KeyboardCssClass', $value, 'Keyboard');
}
/**
* @return string the URL for the CSS file to customize the appearance of the keyboard.
*/
public function getCssUrl()
{
return $this->getViewState('CssUrl', '');
}
/**
* @param string the URL for the CSS file to customize the appearance of the keyboard.
*/
public function setCssUrl($value)
{
$this->setViewState('CssUrl', $value, '');
}
/**
* Registers CSS and JS.
* This method is invoked right before the control rendering, if the control is visible.
* @param mixed event parameter
*/
public function onPreRender($param)
{
parent::onPreRender($param);
if($this->getPage()->getClientSupportsJavaScript())
{
$this->registerStyleSheet();
$this->registerClientScript();
}
}
/**
* Adds attribute name-value pairs to renderer.
* This method overrides the parent implementation with additional TKeyboard specific attributes.
* @param THtmlWriter the writer used for the rendering purpose
*/
protected function addAttributesToRender($writer)
{
parent::addAttributesToRender($writer);
if($this->getPage()->getClientSupportsJavaScript())
$writer->addAttribute('id',$this->getClientID());
}
/**
* Registers the CSS relevant to the TKeyboard.
* It will register the CSS file specified by {@link getCssUrl CssUrl}.
* If that is not set, it will use the default CSS.
*/
protected function registerStyleSheet()
{
if(($url=$this->getCssUrl())==='')
$url=$this->publishAsset('keyboard.css',__CLASS__);
$this->getPage()->getClientScript()->registerStyleSheetFile($url,$url);
}
/**
* Registers the relevant JavaScript.
*/
protected function registerClientScript()
{
$options=TJavaScript::encode($this->getClientOptions());
$className=$this->getClientClassName();
$cs=$this->getPage()->getClientScript();
$cs->registerPradoScript('prado');
$cs->registerEndScript('prado:'.$this->getClientID(), "new $className($options);");
}
/**
* @return string the Javascript class name for this control
*/
protected function getClientClassName()
{
return 'Prado.WebUI.TKeyboard';
}
/**
* @return array the JavaScript options for this control
*/
protected function getClientOptions()
{
if(($forControl=$this->getForControl())==='')
throw new TConfigurationException('keyboard_forcontrol_required');
if(($target=$this->findControl($forControl))===null)
throw new TConfigurationException('keyboard_forcontrol_invalid',$forControl);
$options['ID'] = $this->getClientID();
$options['ForControl'] = $target->getClientID();
$options['AutoHide'] = $this->getAutoHide();
$options['CssClass'] = $this->getKeyboardCssClass();
return $options;
}
}
?>
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