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+<?php
+/**
+ * TTabPanel class file.
+ *
+ * @author Tomasz Wolny <tomasz.wolny@polecam.to.pl> and Qiang Xue <qiang.xue@gmail.com>
+ * @link https://github.com/pradosoft/prado
+ * @copyright Copyright &copy; 2005-2015 The PRADO Group
+ * @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
+ * @package System.Web.UI.WebControls
+ * @since 3.1.1
+ */
+
+/**
+ * Class TTabPanel.
+ *
+ * TTabPanel displays a tabbed panel. Users can click on the tab bar to switching among
+ * different tab views. Each tab view is an independent panel that can contain arbitrary content.
+ *
+ * If the {@link setAutoSwitch AutoSwitch} property is enabled, the user will be able to switch the active view
+ * to another one just hovering its corresponding tab caption.
+ *
+ * A TTabPanel control consists of one or several {@link TTabView} controls representing the possible
+ * tab views. At any time, only one tab view is visible (active), which is specified by any of
+ * the following properties:
+ * - {@link setActiveViewIndex ActiveViewIndex} - the zero-based integer index of the view in the view collection.
+ * - {@link setActiveViewID ActiveViewID} - the text ID of the visible view.
+ * - {@link setActiveView ActiveView} - the visible view instance.
+ * If both {@link setActiveViewIndex ActiveViewIndex} and {@link setActiveViewID ActiveViewID}
+ * are set, the latter takes precedence.
+ *
+ * TTabPanel uses CSS to specify the appearance of the tab bar and panel. By default,
+ * an embedded CSS file will be published which contains the default CSS for TTabPanel.
+ * You may also use your own CSS file by specifying the {@link setCssUrl CssUrl} property.
+ * The following properties specify the CSS classes used for elements in a TTabPanel:
+ * - {@link setCssClass CssClass} - the CSS class name for the outer-most div element (defaults to 'tab-panel');
+ * - {@link setTabCssClass TabCssClass} - the CSS class name for nonactive tab div elements (defaults to 'tab-normal');
+ * - {@link setActiveTabCssClass ActiveTabCssClass} - the CSS class name for the active tab div element (defaults to 'tab-active');
+ * - {@link setViewCssClass ViewCssClass} - the CSS class for the div element enclosing view content (defaults to 'tab-view');
+ *
+ * To use TTabPanel, write a template like following:
+ * <code>
+ * <com:TTabPanel>
+ * <com:TTabView Caption="View 1">
+ * content for view 1
+ * </com:TTabView>
+ * <com:TTabView Caption="View 2">
+ * content for view 2
+ * </com:TTabView>
+ * <com:TTabView Caption="View 3">
+ * content for view 3
+ * </com:TTabView>
+ * </com:TTabPanel>
+ * </code>
+ *
+ * @author Tomasz Wolny <tomasz.wolny@polecam.to.pl> and Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.1.1
+ */
+class TTabPanel extends TWebControl implements IPostBackDataHandler
+{
+ private $_dataChanged=false;
+
+ /**
+ * @return string tag name for the control
+ */
+ protected function getTagName()
+ {
+ return 'div';
+ }
+
+ /**
+ * Adds object parsed from template to the control.
+ * This method adds only {@link TTabView} objects into the {@link getViews Views} collection.
+ * All other objects are ignored.
+ * @param mixed object parsed from template
+ */
+ public function addParsedObject($object)
+ {
+ if($object instanceof TTabView)
+ $this->getControls()->add($object);
+ }
+
+ /**
+ * Returns the index of the active tab view.
+ * Note, this property may not return the correct index.
+ * To ensure the correctness, call {@link getActiveView()} first.
+ * @return integer the zero-based index of the active tab view. If -1, it means no active tab view. Default is 0 (the first view is active).
+ */
+ public function getActiveViewIndex()
+ {
+ return $this->getViewState('ActiveViewIndex',0);
+ }
+
+ /**
+ * @param integer the zero-based index of the current view in the view collection. -1 if no active view.
+ * @throws TInvalidDataValueException if the view index is invalid
+ */
+ public function setActiveViewIndex($value)
+ {
+ $this->setViewState('ActiveViewIndex',TPropertyValue::ensureInteger($value),0);
+ }
+
+ /**
+ * Returns the ID of the active tab view.
+ * Note, this property may not return the correct ID.
+ * To ensure the correctness, call {@link getActiveView()} first.
+ * @return string The ID of the active tab view. Defaults to '', meaning not set.
+ */
+ public function getActiveViewID()
+ {
+ return $this->getViewState('ActiveViewID','');
+ }
+
+ /**
+ * @param string The ID of the active tab view.
+ */
+ public function setActiveViewID($value)
+ {
+ $this->setViewState('ActiveViewID',$value,'');
+ }
+
+ /**
+ * Returns the currently active view.
+ * This method will examin the ActiveViewID, ActiveViewIndex and Views collection to
+ * determine which view is currently active. It will update ActiveViewID and ActiveViewIndex accordingly.
+ * @return TTabView the currently active view, null if no active view
+ * @throws TInvalidDataValueException if the active view ID or index set previously is invalid
+ */
+ public function getActiveView()
+ {
+ $activeView=null;
+ $views=$this->getViews();
+ if(($id=$this->getActiveViewID())!=='')
+ {
+ if(($index=$views->findIndexByID($id))>=0)
+ $activeView=$views->itemAt($index);
+ else
+ throw new TInvalidDataValueException('tabpanel_activeviewid_invalid',$id);
+ }
+ else if(($index=$this->getActiveViewIndex())>=0)
+ {
+ if($index<$views->getCount())
+ $activeView=$views->itemAt($index);
+ else
+ throw new TInvalidDataValueException('tabpanel_activeviewindex_invalid',$index);
+ }
+ else
+ {
+ foreach($views as $index=>$view)
+ {
+ if($view->getActive())
+ {
+ $activeView=$view;
+ break;
+ }
+ }
+ }
+ if($activeView!==null)
+ $this->activateView($activeView);
+ return $activeView;
+ }
+
+ /**
+ * @param TTabView the view to be activated
+ * @throws TInvalidOperationException if the view is not in the view collection
+ */
+ public function setActiveView($view)
+ {
+ if($this->getViews()->indexOf($view)>=0)
+ $this->activateView($view);
+ else
+ throw new TInvalidOperationException('tabpanel_view_inexistent');
+ }
+
+ /**
+ * @return bool status of automatic tab switch on hover
+ */
+ public function getAutoSwitch()
+ {
+ return TPropertyValue::ensureBoolean($this->getViewState('AutoSwitch'));
+ }
+
+ /**
+ * @param bool whether to enable automatic tab switch on hover
+ */
+ public function setAutoSwitch($value)
+ {
+ $this->setViewState('AutoSwitch',TPropertyValue::ensureBoolean($value));
+ }
+
+
+ /**
+ * @return string URL for the CSS file including all relevant CSS class definitions. Defaults to ''.
+ */
+ public function getCssUrl()
+ {
+ return $this->getViewState('CssUrl','default');
+ }
+
+ /**
+ * @param string URL for the CSS file including all relevant CSS class definitions.
+ */
+ public function setCssUrl($value)
+ {
+ $this->setViewState('CssUrl',TPropertyValue::ensureString($value),'');
+ }
+
+ /**
+ * @return string CSS class for the whole tab control div. Defaults to 'tab-panel'.
+ */
+ public function getCssClass()
+ {
+ $cssClass=parent::getCssClass();
+ return $cssClass===''?'tab-panel':$cssClass;
+ }
+
+ /**
+ * @return string CSS class for the currently displayed view div. Defaults to 'tab-view'.
+ */
+ public function getViewCssClass()
+ {
+ return $this->getViewStyle()->getCssClass();
+ }
+
+ /**
+ * @param string CSS class for the currently displayed view div.
+ */
+ public function setViewCssClass($value)
+ {
+ $this->getViewStyle()->setCssClass($value);
+ }
+
+ /**
+ * @return TStyle the style for all the view div
+ */
+ public function getViewStyle()
+ {
+ if(($style=$this->getViewState('ViewStyle',null))===null)
+ {
+ $style=new TStyle;
+ $style->setCssClass('tab-view');
+ $this->setViewState('ViewStyle',$style,null);
+ }
+ return $style;
+ }
+
+ /**
+ * @return string CSS class for non-active tabs. Defaults to 'tab-normal'.
+ */
+ public function getTabCssClass()
+ {
+ return $this->getTabStyle()->getCssClass();
+ }
+
+ /**
+ * @param string CSS class for non-active tabs.
+ */
+ public function setTabCssClass($value)
+ {
+ $this->getTabStyle()->setCssClass($value);
+ }
+
+ /**
+ * @return TStyle the style for all the inactive tab div
+ */
+ public function getTabStyle()
+ {
+ if(($style=$this->getViewState('TabStyle',null))===null)
+ {
+ $style=new TStyle;
+ $style->setCssClass('tab-normal');
+ $this->setViewState('TabStyle',$style,null);
+ }
+ return $style;
+ }
+
+ /**
+ * @return string CSS class for the active tab. Defaults to 'tab-active'.
+ */
+ public function getActiveTabCssClass()
+ {
+ return $this->getActiveTabStyle()->getCssClass();
+ }
+
+ /**
+ * @param string CSS class for the active tab.
+ */
+ public function setActiveTabCssClass($value)
+ {
+ $this->getActiveTabStyle()->setCssClass($value);
+ }
+
+ /**
+ * @return TStyle the style for the active tab div
+ */
+ public function getActiveTabStyle()
+ {
+ if(($style=$this->getViewState('ActiveTabStyle',null))===null)
+ {
+ $style=new TStyle;
+ $style->setCssClass('tab-active');
+ $this->setViewState('ActiveTabStyle',$style,null);
+ }
+ return $style;
+ }
+
+ /**
+ * Activates the specified view.
+ * If there is any other view currently active, it will be deactivated.
+ * @param TTabView the view to be activated. If null, all views will be deactivated.
+ */
+ protected function activateView($view)
+ {
+ $this->setActiveViewIndex(-1);
+ $this->setActiveViewID('');
+ foreach($this->getViews() as $index=>$v)
+ {
+ if($view===$v)
+ {
+ $this->setActiveViewIndex($index);
+ $this->setActiveViewID($view->getID(false));
+ $view->setActive(true);
+ }
+ else
+ $v->setActive(false);
+ }
+ }
+
+ /**
+ * Loads user input data.
+ * This method is primarly used by framework developers.
+ * @param string the key that can be used to retrieve data from the input data collection
+ * @param array the input data collection
+ * @return boolean whether the data of the control has been changed
+ */
+ public function loadPostData($key,$values)
+ {
+ if(($index=$values[$this->getClientID().'_1'])!==null)
+ {
+ $index=(int)$index;
+ $currentIndex=$this->getActiveViewIndex();
+ if($currentIndex!==$index)
+ {
+ $this->setActiveViewID(''); // clear up view ID
+ $this->setActiveViewIndex($index);
+ return $this->_dataChanged=true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Raises postdata changed event.
+ * This method is required by {@link IPostBackDataHandler} interface.
+ * It is invoked by the framework when {@link getActiveViewIndex ActiveViewIndex} property
+ * is changed on postback.
+ * This method is primarly used by framework developers.
+ */
+ public function raisePostDataChangedEvent()
+ {
+ // do nothing
+ }
+
+ /**
+ * Returns a value indicating whether postback has caused the control data change.
+ * This method is required by the IPostBackDataHandler interface.
+ * @return boolean whether postback has caused the control data change. False if the page is not in postback mode.
+ */
+ public function getDataChanged()
+ {
+ return $this->_dataChanged;
+ }
+
+ /**
+ * Adds attributes to renderer.
+ * @param THtmlWriter the renderer
+ */
+ protected function addAttributesToRender($writer)
+ {
+ $writer->addAttribute('id',$this->getClientID());
+ $this->setCssClass($this->getCssClass());
+ parent::addAttributesToRender($writer);
+ }
+
+ /**
+ * Registers CSS and JS.
+ * This method is invoked right before the control rendering, if the control is visible.
+ * @param mixed event parameter
+ */
+ public function onPreRender($param)
+ {
+ parent::onPreRender($param);
+ $this->getActiveView(); // determine the active view
+ $this->registerStyleSheet();
+
+ $page=$this->getPage();
+ $page->registerRequiresPostData($this);
+ $page->registerRequiresPostData($this->getClientID()."_1");
+ }
+
+ /**
+ * Registers the CSS relevant to the TTabControl.
+ * 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()
+ {
+ $url = $this->getCssUrl();
+
+ if($url === '') {
+ return;
+ }
+
+ if($url === 'default') {
+ $url = $this->getApplication()->getAssetManager()->publishFilePath(dirname(__FILE__).DIRECTORY_SEPARATOR.'assets'.DIRECTORY_SEPARATOR.'tabpanel.css');
+ }
+
+ if($url !== '') {
+ $this->getPage()->getClientScript()->registerStyleSheetFile($url, $url);
+ }
+ }
+
+ /**
+ * Registers the relevant JavaScript.
+ */
+ protected function registerClientScript()
+ {
+ $id=$this->getClientID();
+ $options=TJavaScript::encode($this->getClientOptions());
+ $className=$this->getClientClassName();
+ $cs=$this->getPage()->getClientScript();
+ $cs->registerPradoScript('tabpanel');
+ $code="new $className($options);";
+ $cs->registerEndScript("prado:$id", $code);
+ // ensure an item is always active and visible
+ $index = $this->getActiveViewIndex();
+ if(!$this->getViews()->itemAt($index)->Visible)
+ $index=0;
+ $cs->registerHiddenField($id.'_1', $index);
+ }
+
+ /**
+ * Gets the name of the javascript class responsible for performing postback for this control.
+ * This method overrides the parent implementation.
+ * @return string the javascript class name
+ */
+ protected function getClientClassName()
+ {
+ return 'Prado.WebUI.TTabPanel';
+ }
+
+ /**
+ * @return array the options for JavaScript
+ */
+ protected function getClientOptions()
+ {
+ $options['ID'] = $this->getClientID();
+ $options['ActiveCssClass'] = $this->getActiveTabCssClass();
+ $options['NormalCssClass'] = $this->getTabCssClass();
+ $viewIDs = array();
+ $viewVis = array();
+ foreach($this->getViews() as $view)
+ {
+ $viewIDs[] = $view->getClientID();
+ $viewVis[] = $view->getVisible();
+ }
+ $options['Views'] = $viewIDs;
+ $options['ViewsVis'] = $viewVis;
+ $options['AutoSwitch'] = $this->getAutoSwitch();
+
+ return $options;
+ }
+
+ /**
+ * Creates a control collection object that is to be used to hold child controls
+ * @return TTabViewCollection control collection
+ */
+ protected function createControlCollection()
+ {
+ return new TTabViewCollection($this);
+ }
+
+ /**
+ * @return TTabViewCollection list of {@link TTabView} controls
+ */
+ public function getViews()
+ {
+ return $this->getControls();
+ }
+
+ public function render($writer)
+ {
+ $this->registerClientScript();
+ parent::render($writer);
+ }
+
+ /**
+ * Renders body contents of the tab control.
+ * @param THtmlWriter the writer used for the rendering purpose.
+ */
+ public function renderContents($writer)
+ {
+ $views=$this->getViews();
+ if($views->getCount()>0)
+ {
+ $writer->writeLine();
+ // render tab bar
+ foreach($views as $view)
+ {
+ $view->renderTab($writer);
+ $writer->writeLine();
+ }
+ // render tab views
+ foreach($views as $view)
+ {
+ $view->renderControl($writer);
+ $writer->writeLine();
+ }
+ }
+ }
+}
+
+/**
+ * TTabView class.
+ *
+ * TTabView represents a view in a {@link TTabPanel} control.
+ *
+ * The content in a TTabView can be specified by the {@link setText Text} property
+ * or its child controls. In template syntax, the latter means enclosing the content
+ * within the TTabView component element. If both are set, {@link getText Text} takes precedence.
+ *
+ * Each TTabView is associated with a tab in the tab bar of the TTabPanel control.
+ * The tab caption is specified by {@link setCaption Caption}. If {@link setNavigateUrl NavigateUrl}
+ * is set, the tab will contain a hyperlink pointing to the specified URL. In this case,
+ * clicking on the tab will redirect the browser to the specified URL.
+ *
+ * TTabView may be toggled between visible (active) and invisible (inactive) by
+ * setting the {@link setActive Active} property.
+ *
+ * @author Tomasz Wolny <tomasz.wolny@polecam.to.pl> and Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.1.1
+ */
+class TTabView extends TWebControl
+{
+ private $_active=false;
+
+ /**
+ * @return the tag name for the view element
+ */
+ protected function getTagName()
+ {
+ return 'div';
+ }
+
+ /**
+ * Adds attributes to renderer.
+ * @param THtmlWriter the renderer
+ */
+ protected function addAttributesToRender($writer)
+ {
+ if(!$this->getActive() && $this->getPage()->getClientSupportsJavaScript())
+ $this->getStyle()->setStyleField('display','none');
+
+ $this->getStyle()->mergeWith($this->getParent()->getViewStyle());
+
+ parent::addAttributesToRender($writer);
+
+ $writer->addAttribute('id',$this->getClientID());
+ }
+
+ /**
+ * @return string the caption displayed on this tab. Defaults to ''.
+ */
+ public function getCaption()
+ {
+ return $this->getViewState('Caption','');
+ }
+
+ /**
+ * @param string the caption displayed on this tab
+ */
+ public function setCaption($value)
+ {
+ $this->setViewState('Caption',TPropertyValue::ensureString($value),'');
+ }
+
+ /**
+ * @return string the URL of the target page. Defaults to ''.
+ */
+ public function getNavigateUrl()
+ {
+ return $this->getViewState('NavigateUrl','');
+ }
+
+ /**
+ * Sets the URL of the target page.
+ * If not empty, clicking on this tab will redirect the browser to the specified URL.
+ * @param string the URL of the target page.
+ */
+ public function setNavigateUrl($value)
+ {
+ $this->setViewState('NavigateUrl',TPropertyValue::ensureString($value),'');
+ }
+
+ /**
+ * @return string the text content displayed on this view. Defaults to ''.
+ */
+ public function getText()
+ {
+ return $this->getViewState('Text','');
+ }
+
+ /**
+ * Sets the text content to be displayed on this view.
+ * If this is not empty, the child content of the view will be ignored.
+ * @param string the text content displayed on this view
+ */
+ public function setText($value)
+ {
+ $this->setViewState('Text',TPropertyValue::ensureString($value),'');
+ }
+
+ /**
+ * @return boolean whether this tab view is active. Defaults to false.
+ */
+ public function getActive()
+ {
+ return $this->_active;
+ }
+
+ /**
+ * @param boolean whether this tab view is active.
+ */
+ public function setActive($value)
+ {
+ $this->_active=TPropertyValue::ensureBoolean($value);
+ }
+
+ /**
+ * Renders body contents of the tab view.
+ * @param THtmlWriter the writer used for the rendering purpose.
+ */
+ public function renderContents($writer)
+ {
+ if(($text=$this->getText())!=='')
+ $writer->write($text);
+ else if($this->getHasControls())
+ parent::renderContents($writer);
+ }
+
+ /**
+ * Renders the tab associated with the tab view.
+ * @param THtmlWriter the writer for rendering purpose.
+ */
+ public function renderTab($writer)
+ {
+ if($this->getVisible(false) && $this->getPage()->getClientSupportsJavaScript())
+ {
+ $writer->addAttribute('id',$this->getClientID().'_0');
+
+ $style=$this->getActive()?$this->getParent()->getActiveTabStyle():$this->getParent()->getTabStyle();
+ $style->addAttributesToRender($writer);
+
+ $writer->renderBeginTag($this->getTagName());
+
+ $this->renderTabContent($writer);
+
+ $writer->renderEndTag();
+ }
+ }
+
+ /**
+ * Renders the content in the tab.
+ * By default, a hyperlink is displayed.
+ * @param THtmlWriter the HTML writer
+ */
+ protected function renderTabContent($writer)
+ {
+ if(($url=$this->getNavigateUrl())==='')
+ $url='javascript://';
+ if(($caption=$this->getCaption())==='')
+ $caption='&nbsp;';
+ $writer->write("<a href=\"{$url}\">{$caption}</a>");
+ }
+}
+
+/**
+ * TTabViewCollection class.
+ *
+ * TTabViewCollection is used to maintain a list of views belong to a {@link TTabPanel}.
+ *
+ * @author Tomasz Wolny <tomasz.wolny@polecam.to.pl> and Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.1.1
+ */
+class TTabViewCollection extends TControlCollection
+{
+ /**
+ * Inserts an item at the specified position.
+ * This overrides the parent implementation by performing sanity check on the type of new item.
+ * @param integer the speicified position.
+ * @param mixed new item
+ * @throws TInvalidDataTypeException if the item to be inserted is not a {@link TTabView} object.
+ */
+ public function insertAt($index,$item)
+ {
+ if($item instanceof TTabView)
+ parent::insertAt($index,$item);
+ else
+ throw new TInvalidDataTypeException('tabviewcollection_tabview_required');
+ }
+
+ /**
+ * Finds the index of the tab view whose ID is the same as the one being looked for.
+ * @param string the explicit ID of the tab view to be looked for
+ * @return integer the index of the tab view found, -1 if not found.
+ */
+ public function findIndexByID($id)
+ {
+ foreach($this as $index=>$view)
+ {
+ if($view->getID(false)===$id)
+ return $index;
+ }
+ return -1;
+ }
+}
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