From 6f7fdef0f500cd4bb540affd3bc1482243f337c1 Mon Sep 17 00:00:00 2001 From: emkael Date: Wed, 24 Feb 2016 23:18:07 +0100 Subject: * Prado 3.3.0 --- lib/prado/framework/Web/UI/WebControls/TButton.php | 404 +++++++++++++++++++++ 1 file changed, 404 insertions(+) create mode 100644 lib/prado/framework/Web/UI/WebControls/TButton.php (limited to 'lib/prado/framework/Web/UI/WebControls/TButton.php') diff --git a/lib/prado/framework/Web/UI/WebControls/TButton.php b/lib/prado/framework/Web/UI/WebControls/TButton.php new file mode 100644 index 0000000..aed518a --- /dev/null +++ b/lib/prado/framework/Web/UI/WebControls/TButton.php @@ -0,0 +1,404 @@ + + * @link https://github.com/pradosoft/prado + * @copyright Copyright © 2005-2015 The PRADO Group + * @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT + * @package System.Web.UI.WebControls + */ + +/** + * TButton class + * + * TButton creates a click button on the page. It is mainly used to submit data to a page. + * + * TButton raises two server-side events, {@link onClick OnClick} and {@link onCommand OnCommand}, + * when it is clicked on the client-side. The difference between these two events + * is that the event {@link onCommand OnCommand} is bubbled up to the button's ancestor controls. + * And within the event parameter for {@link onCommand OnCommand} contains the reference + * to the {@link setCommandName CommandName} and {@link setCommandParameter CommandParameter} + * property values that are set for the button object. This allows you to create multiple TButton + * components on a Web page and programmatically determine which one is clicked + * with what parameter. + * + * Clicking on button can also trigger form validation, if + * {@link setCausesValidation CausesValidation} is true. + * The validation may be restricted within a certain group of validator + * controls by setting {@link setValidationGroup ValidationGroup} property. + * If validation is successful, the data will be post back to the same page. + * + * TButton displays the {@link setText Text} property as the button caption. + * + * TButton can be one of three {@link setButtonType ButtonType}: Submit, Button and Reset. + * By default, it is a Submit button and the form submission uses the browser's + * default submission capability. If it is Button or Reset, postback may occur + * if one of the following conditions is met: + * - an event handler is attached to {@link onClick OnClick} event; + * - an event handler is attached to {@link onCommand OnCommand} event; + * - the button is in a non-empty validation group. + * In addition, clicking on a Reset button will clear up all input fields + * if the button does not cause a postback. + * + * @author Qiang Xue + * @package System.Web.UI.WebControls + * @since 3.0 + */ +class TButton extends TWebControl implements IPostBackEventHandler, IButtonControl, IDataRenderer +{ + /** + * @return string tag name of the button + */ + protected function getTagName() + { + return strtolower($this->getButtonTag()); + } + + /** + * @return TButtonTag the tag name of the button. Defaults to TButtonType::Input. + */ + public function getButtonTag() + { + return $this->getViewState('ButtonTag',TButtonTag::Input); + } + + /** + * @param TButtonTag the tag name of the button. + */ + public function setButtonTag($value) + { + $this->setViewState('ButtonTag',TPropertyValue::ensureEnum($value,'TButtonTag'),TButtonTag::Input); + } + + /** + * @return boolean whether to render javascript. + */ + public function getEnableClientScript() + { + return $this->getViewState('EnableClientScript',true); + } + + /** + * @param boolean whether to render javascript. + */ + public function setEnableClientScript($value) + { + $this->setViewState('EnableClientScript',TPropertyValue::ensureBoolean($value),true); + } + + /** + * Adds attribute name-value pairs to renderer. + * This overrides the parent implementation with additional button specific attributes. + * @param THtmlWriter the writer used for the rendering purpose + */ + protected function addAttributesToRender($writer) + { + $page=$this->getPage(); + $page->ensureRenderInForm($this); + $writer->addAttribute('type',strtolower($this->getButtonType())); + if(($uniqueID=$this->getUniqueID())!=='') + $writer->addAttribute('name',$uniqueID); + if($this->getButtonTag()===TButtonTag::Button) + $this->addParsedObject($this->getText()); + else + $writer->addAttribute('value',$this->getText()); + if($this->getEnabled(true)) + { + if($this->getEnableClientScript() && $this->needPostBackScript()) + $this->renderClientControlScript($writer); + } + else if($this->getEnabled()) // in this case, parent will not render 'disabled' + $writer->addAttribute('disabled','disabled'); + + parent::addAttributesToRender($writer); + } + + /** + * Renders the client-script code. + */ + protected function renderClientControlScript($writer) + { + $writer->addAttribute('id',$this->getClientID()); + $this->getPage()->getClientScript()->registerPostBackControl($this->getClientClassName(),$this->getPostBackOptions()); + } + + /** + * Gets the name of the javascript class responsible for performing postback for this control. + * This method overrides the parent implementation. + * @return string the javascript class name + */ + protected function getClientClassName() + { + return 'Prado.WebUI.TButton'; + } + + /** + * @return boolean whether to perform validation if the button is clicked + */ + protected function canCauseValidation() + { + if($this->getCausesValidation()) + { + $group=$this->getValidationGroup(); + return $this->getPage()->getValidators($group)->getCount()>0; + } + else + return false; + } + + /** + * @param boolean set by a panel to register this button as the default button for the panel. + */ + public function setIsDefaultButton($value) + { + $this->setViewState('IsDefaultButton', TPropertyValue::ensureBoolean($value),false); + } + + /** + * @return boolean true if this button is registered as a default button for a panel. + */ + public function getIsDefaultButton() + { + return $this->getViewState('IsDefaultButton', false); + } + + /** + * @return boolean whether the button needs javascript to do postback + */ + protected function needPostBackScript() + { + return $this->canCauseValidation() || ($this->getButtonType()!==TButtonType::Submit && + ($this->hasEventHandler('OnClick') || $this->hasEventHandler('OnCommand'))) + || $this->getIsDefaultButton(); + } + + /** + * Returns postback specifications for the button. + * This method is used by framework and control developers. + * @return array parameters about how the button defines its postback behavior. + */ + protected function getPostBackOptions() + { + $options['ID']=$this->getClientID(); + $options['CausesValidation']=$this->getCausesValidation(); + $options['EventTarget'] = $this->getUniqueID(); + $options['ValidationGroup']=$this->getValidationGroup(); + + return $options; + } + + /** + * Renders the body content enclosed between the control tag. + * This overrides the parent implementation with nothing to be rendered for input tags, + * button tags are rendered normally. + * @param THtmlWriter the writer used for the rendering purpose + */ + public function renderContents($writer) + { + if($this->getButtonTag()===TButtonTag::Button) + parent::renderContents($writer); + } + + /** + * This method is invoked when the button is clicked. + * The method raises 'OnClick' event to fire up the event handlers. + * If you override this method, be sure to call the parent implementation + * so that the event handler can be invoked. + * @param TEventParameter event parameter to be passed to the event handlers + */ + public function onClick($param) + { + $this->raiseEvent('OnClick',$this,$param); + } + + /** + * This method is invoked when the button is clicked. + * The method raises 'OnCommand' event to fire up the event handlers. + * If you override this method, be sure to call the parent implementation + * so that the event handlers can be invoked. + * @param TCommandEventParameter event parameter to be passed to the event handlers + */ + public function onCommand($param) + { + $this->raiseEvent('OnCommand',$this,$param); + $this->raiseBubbleEvent($this,$param); + } + + /** + * Raises the postback event. + * This method is required by {@link IPostBackEventHandler} interface. + * If {@link getCausesValidation CausesValidation} is true, it will + * invoke the page's {@link TPage::validate validate} method first. + * It will raise {@link onClick OnClick} and {@link onCommand OnCommand} events. + * This method is mainly used by framework and control developers. + * @param TEventParameter the event parameter + */ + public function raisePostBackEvent($param) + { + if($this->getCausesValidation()) + $this->getPage()->validate($this->getValidationGroup()); + $this->onClick(null); + $this->onCommand(new TCommandEventParameter($this->getCommandName(),$this->getCommandParameter())); + } + + /** + * @return string caption of the button + */ + public function getText() + { + return $this->getViewState('Text',''); + } + + /** + * @param string caption of the button + */ + public function setText($value) + { + $this->setViewState('Text',$value,''); + } + + /** + * Returns the caption of the button. + * This method is required by {@link IDataRenderer}. + * It is the same as {@link getText()}. + * @return string caption of the button. + * @see getText + * @since 3.1.0 + */ + public function getData() + { + return $this->getText(); + } + + /** + * Sets the caption of the button. + * This method is required by {@link IDataRenderer}. + * It is the same as {@link setText()}. + * @param string caption of the button + * @see setText + * @since 3.1.0 + */ + public function setData($value) + { + $this->setText($value); + } + + /** + * @return boolean whether postback event trigger by this button will cause input validation, default is true + */ + public function getCausesValidation() + { + return $this->getViewState('CausesValidation',true); + } + + /** + * @param boolean whether postback event trigger by this button will cause input validation + */ + public function setCausesValidation($value) + { + $this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true); + } + + /** + * @return string the command name associated with the {@link onCommand OnCommand} event. + */ + public function getCommandName() + { + return $this->getViewState('CommandName',''); + } + + /** + * @param string the command name associated with the {@link onCommand OnCommand} event. + */ + public function setCommandName($value) + { + $this->setViewState('CommandName',$value,''); + } + + /** + * @return string the parameter associated with the {@link onCommand OnCommand} event + */ + public function getCommandParameter() + { + return $this->getViewState('CommandParameter',''); + } + + /** + * @param string the parameter associated with the {@link onCommand OnCommand} event. + */ + public function setCommandParameter($value) + { + $this->setViewState('CommandParameter',$value,''); + } + + /** + * @return string the group of validators which the button causes validation upon postback + */ + public function getValidationGroup() + { + return $this->getViewState('ValidationGroup',''); + } + + /** + * @param string the group of validators which the button causes validation upon postback + */ + public function setValidationGroup($value) + { + $this->setViewState('ValidationGroup',$value,''); + } + + /** + * @return TButtonType the type of the button. Defaults to TButtonType::Submit. + */ + public function getButtonType() + { + return $this->getViewState('ButtonType',TButtonType::Submit); + } + + /** + * @param TButtonType the type of the button. + */ + public function setButtonType($value) + { + $this->setViewState('ButtonType',TPropertyValue::ensureEnum($value,'TButtonType'),TButtonType::Submit); + } +} + +/** + * TButtonType class. + * TButtonType defines the enumerable type for the possible types that a {@link TButton} can take. + * + * The following enumerable values are defined: + * - Submit: a normal submit button + * - Reset: a reset button + * - Button: a client button (normally does not perform form submission) + * + * @author Qiang Xue + * @package System.Web.UI.WebControls + * @since 3.0.4 + */ +class TButtonType extends TEnumerable +{ + const Submit='Submit'; + const Reset='Reset'; + const Button='Button'; +} + +/** + * TButtonTag class. + * TButtonTag defines the enumerable type for the possible tag names that a {@link TButton} can use for rendering. + * + * The following enumerable values are defined: + * - Input: an input tag is rendered + * - Button: a button tag is rendered + * + * @author LANDWEHR Computer und Software GmbH + * @package System.Web.UI.WebControls + */ +class TButtonTag extends TEnumerable +{ + const Input='Input'; + const Button='Button'; +} + -- cgit v1.2.3