diff options
| author | xue <> | 2005-12-08 21:23:43 +0000 |
|---|---|---|
| committer | xue <> | 2005-12-08 21:23:43 +0000 |
| commit | f94b57ffacdc60072627c6c62de7e7708d79d77a (patch) | |
| tree | c8ae556dd4bb38f74d58fac3a0f20092f2657b8f /framework/Web/UI/WebControls/TRadioButton.php | |
| parent | 84f52b18da70cb1fa2648f4d82ee45c6415c64ed (diff) | |
Diffstat (limited to 'framework/Web/UI/WebControls/TRadioButton.php')
| -rw-r--r-- | framework/Web/UI/WebControls/TRadioButton.php | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/framework/Web/UI/WebControls/TRadioButton.php b/framework/Web/UI/WebControls/TRadioButton.php new file mode 100644 index 00000000..302d088c --- /dev/null +++ b/framework/Web/UI/WebControls/TRadioButton.php @@ -0,0 +1,182 @@ +<?php
+/**
+ * TRadioButton class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright © 2005 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ */
+
+/**
+ * Using TCheckBox parent class
+ */
+Prado::using('System.Web.UI.WebControls.TCheckBox');
+// using TRadioButtonList ??
+/**
+ * TRadioButton class
+ *
+ * TRadioButton displays a radio button on the page.
+ * You can specify the caption to display beside the radio buttonby setting
+ * the {@link setText Text} property. The caption can appear either on the right
+ * or left of the radio button, which is determined by the {@link setTextAlign TextAlign}
+ * property.
+ *
+ * To determine whether the TRadioButton component is checked, test the {@link getChecked Checked}
+ * property. The {@link onCheckedChanged CheckedChanged} event is raised when
+ * the {@link getChecked Checked} state of the TRadioButton component changes
+ * between posts to the server. You can provide an event handler for
+ * the {@link onCheckedChanged CheckedChanged} event to to programmatically
+ * control the actions performed when the state of the TRadioButton component changes
+ * between posts to the server.
+ *
+ * TRadioButton uses {@link setGroupName GroupName} to group together a set of radio buttons.
+ *
+ * If {@link setAutoPostBack AutoPostBack} is set true, changing the radio button state
+ * will cause postback action. And if {@link setCausesValidation CausesValidation}
+ * is true, validation will also be processed, which can be further restricted within
+ * a {@link setValidationGroup ValidationGroup}.
+ *
+ * Note, {@link setText Text} is rendered as is. Make sure it does not contain unwanted characters
+ * that may bring security vulnerabilities.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TRadioButton extends TCheckBox
+{
+ /**
+ * @var string the name used to fetch radiobutton post data
+ */
+ private $_uniqueGroupName=null;
+
+ /**
+ * Loads user input data.
+ * This method is primarly used by framework developers.
+ * @param string the key that can be used to retrieve data from the input data collection
+ * @param array the input data collection
+ * @return boolean whether the data of the control has been changed
+ */
+ public function loadPostData($key,$values)
+ {
+ $uniqueGroupName=$this->getUniqueGroupName();
+ $value=isset($values[$uniqueGroupName])?$values[$uniqueGroupName]:null;
+ if($value!==null && $value===$this->getValueAttribute())
+ {
+ if(!$this->getChecked())
+ {
+ $this->setChecked(true);
+ return true;
+ }
+ else
+ return false;
+ }
+ else if($this->getChecked())
+ $this->setChecked(false);
+ return false;
+ }
+
+ /**
+ * @return string the name of the group that the radio button belongs to. Defaults to empty.
+ */
+ public function getGroupName()
+ {
+ return $this->getViewState('GroupName','');
+ }
+
+ /**
+ * Sets the name of the group that the radio button belongs to
+ * @param string the group name
+ */
+ public function setGroupName($value)
+ {
+ $this->setViewState('GroupName',$value,'');
+ }
+
+ /**
+ * @return string the name used to fetch radiobutton post data
+ */
+ private function getUniqueGroupName()
+ {
+ if($this->_uniqueGroupName===null)
+ {
+ $groupName=$this->getGroupName();
+ $uniqueID=$this->getUniqueID();
+ if($uniqueID!=='')
+ {
+ if(($pos=strrpos($uniqueID,TControl::ID_SEPARATOR))!==false)
+ $this->_uniqueGroupName=substr($uniqueID,0,$pos+1).$groupName;
+ else if($this->getNameContainer() instanceof TRadioButtonList)
+ $this->_uniqueGroupName=substr($uniqueID,0,$pos);
+ if(empty($this->_uniqueGroupName))
+ $this->_uniqueGroupName=$uniqueID;
+ }
+ else
+ $this->_uniqueGroupName=$groupName;
+ }
+ return $this->_uniqueGroupName;
+ }
+
+ /**
+ * @return string the value attribute to be rendered
+ */
+ private function getValueAttribute()
+ {
+ if(($value=$this->getAttribute('value'))==='')
+ {
+ $value=$this->getID();
+ return empty($value)?$this->getUniqueID():$value;
+ }
+ else
+ return $value;
+ }
+
+ /**
+ * Renders a radiobutton input element.
+ * @param THtmlWriter the writer for the rendering purpose
+ * @param string checkbox id
+ * @param string onclick attribute value for the checkbox
+ */
+ protected function renderInputTag($writer,$clientID,$onclick)
+ {
+ if($clientID!=='')
+ $writer->addAttribute('id',$clientID);
+ $writer->addAttribute('type','radio');
+ $writer->addAttribute('name',$this->getUniqueGroupName());
+ $writer->addAttribute('value',$this->getValueAttribute());
+ if($this->getChecked())
+ $writer->addAttribute('checked','checked');
+ if(!$this->getEnabled(true))
+ $writer->addAttribute('disabled','disabled');
+ $page=$this->getPage();
+ if($this->getAutoPostBack() && $page->getClientSupportsJavaScript())
+ {
+ $option=new TPostBackOptions();
+ if($this->getCausesValidation() && $page->getValidators($this->getValidationGroup())->getCount())
+ {
+ $option->setPerformValidation(true);
+ $option->setValidationGroup($this->getValidationGroup());
+ }
+ $option->setAutoPostBack(true);
+ if(!empty($onclick))
+ $onclick=THttpUtility::trimJavaScriptString($onclick);
+ $onclick.=$page->getClientScript()->getPostBackEventReference($this,'',$option,false);
+ }
+ if(!empty($onclick))
+ $writer->addAttribute('onclick',$onclick);
+ if(($accesskey=$this->getAccessKey())!=='')
+ $writer->addAttribute('accesskey',$accesskey);
+ if(($tabindex=$this->getTabIndex())>0)
+ $writer->addAttribute('tabindex',"$tabindex");
+ if($attributes=$this->getViewState('InputAttributes',null))
+ $writer->addAttributes($attributes);
+ $writer->renderBeginTag('input');
+ $writer->renderEndTag();
+ }
+}
+
+?>
\ No newline at end of file |