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authorDaniel <darthdaniel85@gmail.com>2013-12-24 17:59:22 -0500
committerDaniel <darthdaniel85@gmail.com>2013-12-24 17:59:22 -0500
commitf235957dd296183ff6c427290c7c52397ad95078 (patch)
treea528753ba3fd3bae43ac982295978a8714031364 /framework/Web/UI/ActiveControls/TAutoComplete.php
parentec9ebfe3f0680b6f451829bf0111eb69fe092b24 (diff)
parentde198e5bca106ab71ac1d62b45e332aef0601708 (diff)
all ready
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-<?php
-/**
- * TAutoComplete class file.
- *
- * @author Wei Zhuo <weizhuo[at]gamil[dot]com>
- * @link http://www.pradosoft.com/
- * @copyright Copyright &copy; 2005-2013 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id: TAutoComplete.php 3245 2013-01-07 20:23:32Z ctrlaltca $
- * @package System.Web.UI.ActiveControls
- */
-
-/**
- * Load active text box.
- */
-Prado::using('System.Web.UI.ActiveControls.TActiveTextBox');
-Prado::using('System.Web.UI.ActiveControls.TCallbackEventParameter');
-
-/**
- * TAutoComplete class.
- *
- * TAutoComplete is a textbox that provides a list of suggestion on
- * the current partial word typed in the textbox. The suggestions are
- * requested using callbacks, and raises the {@link onSuggestion OnSuggestion}
- * event. The events of the TActiveText (from which TAutoComplete is extended from)
- * and {@link onSuggestion OnSuggestion} are mutually exculsive. That is,
- * if {@link onTextChange OnTextChange} and/or {@link onCallback OnCallback}
- * events are raise, then {@link onSuggestion OnSuggestion} will not be raise, and
- * vice versa.
- *
- * The list of suggestions should be set in the {@link onSuggestion OnSuggestion}
- * event handler. The partial word to match the suggestion is in the
- * {@link TCallbackEventParameter::getCallbackParameter TCallbackEventParameter::CallbackParameter}
- * property. The datasource of the TAutoComplete must be set using {@link setDataSource}
- * method. This sets the datasource for the suggestions repeater, available through
- * the {@link getSuggestions Suggestions} property. Header, footer templates and
- * other properties of the repeater can be access via the {@link getSuggestions Suggestions}
- * property and its sub-properties.
- *
- * The {@link setTextCssClass TextCssClass} property if set is used to find
- * the element within the Suggestions.ItemTemplate and Suggestions.AlternatingItemTemplate
- * that contains the actual text for the suggestion selected. That is,
- * only text inside elements with CSS class name equal to {@link setTextCssClass TextCssClass}
- * will be used as suggestions.
- *
- * To return the list of suggestions back to the browser, supply a non-empty data source
- * and call databind. For example,
- * <code>
- * function autocomplete_suggestion($sender, $param)
- * {
- * $token = $param->getToken(); //the partial word to match
- * $sender->setDataSource($this->getSuggestionsFor($token)); //set suggestions
- * $sender->dataBind();
- * }
- * </code>
- *
- * The suggestion will be rendered when the {@link dataBind()} method is called
- * <strong>during a callback request</strong>.
- *
- * When an suggestion is selected, that is, when the use has clicked, pressed
- * the "Enter" key, or pressed the "Tab" key, the {@link onSuggestionSelected OnSuggestionSelected}
- * event is raised. The
- * {@link TCallbackEventParameter::getCallbackParameter TCallbackEventParameter::CallbackParameter}
- * property contains the index of the selected suggestion.
- *
- * TAutoComplete allows multiple suggestions within one textbox with each
- * word or phrase separated by any characters specified in the
- * {@link setSeparator Separator} property. The {@link setFrequency Frequency}
- * and {@link setMinChars MinChars} properties sets the delay and minimum number
- * of characters typed, respectively, before requesting for sugggestions.
- *
- * Use {@link onTextChange OnTextChange} and/or {@link onCallback OnCallback} events
- * to handle post backs due to {@link setAutoPostBack AutoPostBack}.
- *
- * In the {@link getSuggestions Suggestions} TRepater item template, all HTML text elements
- * are considered as text for the suggestion. Text within HTML elements with CSS class name
- * "informal" are ignored as text for suggestions.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id: TAutoComplete.php 3245 2013-01-07 20:23:32Z ctrlaltca $
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TAutoComplete extends TActiveTextBox implements INamingContainer
-{
- /**
- * @var ITemplate template for repeater items
- */
- private $_repeater=null;
- /**
- * @var TPanel result panel holding the suggestion items.
- */
- private $_resultPanel=null;
-
- /**
- * @return string word or token separators (delimiters).
- */
- public function getSeparator()
- {
- return $this->getViewState('tokens', '');
- }
-
- /**
- * @return string word or token separators (delimiters).
- */
- public function setSeparator($value)
- {
- $this->setViewState('tokens', TPropertyValue::ensureString($value), '');
- }
-
- /**
- * @return float maximum delay (in seconds) before requesting a suggestion.
- */
- public function getFrequency()
- {
- return $this->getViewState('frequency', '');
- }
-
- /**
- * @param float maximum delay (in seconds) before requesting a suggestion.
- * Default is 0.4.
- */
- public function setFrequency($value)
- {
- $this->setViewState('frequency', TPropertyValue::ensureFloat($value),'');
- }
-
- /**
- * @return integer minimum number of characters before requesting a suggestion.
- */
- public function getMinChars()
- {
- return $this->getViewState('minChars','');
- }
-
- /**
- * @param integer minimum number of characters before requesting a suggestion.
- */
- public function setMinChars($value)
- {
- $this->setViewState('minChars', TPropertyValue::ensureInteger($value), '');
- }
-
- /**
- * @param string Css class name of the element to use for suggestion.
- */
- public function setTextCssClass($value)
- {
- $this->setViewState('TextCssClass', $value);
- }
-
- /**
- * @return string Css class name of the element to use for suggestion.
- */
- public function getTextCssClass()
- {
- return $this->getViewState('TextCssClass');
- }
-
- /**
- * Raises the callback event. This method is overrides the parent implementation.
- * If {@link setAutoPostBack AutoPostBack} is enabled it will raise
- * {@link onTextChanged OnTextChanged} event event and then the
- * {@link onCallback OnCallback} event. The {@link onSuggest OnSuggest} event is
- * raise if the request is to find sugggestions, the {@link onTextChanged OnTextChanged}
- * and {@link onCallback OnCallback} events are <b>NOT</b> raised.
- * This method is mainly used by framework and control developers.
- * @param TCallbackEventParameter the event parameter
- */
- public function raiseCallbackEvent($param)
- {
- $token = $param->getCallbackParameter();
- if(is_array($token) && count($token) == 2)
- {
- if($token[1] === '__TAutoComplete_onSuggest__')
- {
- $parameter = new TAutoCompleteEventParameter($this->getResponse(), $token[0]);
- $this->onSuggest($parameter);
- }
- else if($token[1] === '__TAutoComplete_onSuggestionSelected__')
- {
- $parameter = new TAutoCompleteEventParameter($this->getResponse(), null, $token[0]);
- $this->onSuggestionSelected($parameter);
- }
- }
- else if($this->getAutoPostBack())
- parent::raiseCallbackEvent($param);
- }
-
- /**
- * This method is invoked when an autocomplete suggestion is requested.
- * The method raises 'OnSuggest' event. If you override this
- * method, be sure to call the parent implementation so that the event
- * handler can be invoked.
- * @param TCallbackEventParameter event parameter to be passed to the event handlers
- */
- public function onSuggest($param)
- {
- $this->raiseEvent('OnSuggest', $this, $param);
- }
-
- /**
- * This method is invoked when an autocomplete suggestion is selected.
- * The method raises 'OnSuggestionSelected' event. If you override this
- * method, be sure to call the parent implementation so that the event
- * handler can be invoked.
- * @param TCallbackEventParameter event parameter to be passed to the event handlers
- */
- public function onSuggestionSelected($param)
- {
- $this->raiseEvent('OnSuggestionSelected', $this, $param);
- }
-
- /**
- * @param array data source for suggestions.
- */
- public function setDataSource($data)
- {
- $this->getSuggestions()->setDataSource($data);
- }
-
- /**
- * Overrides parent implementation. Callback {@link renderSuggestions()} when
- * page's IsCallback property is true.
- */
- public function dataBind()
- {
- parent::dataBind();
- if($this->getPage()->getIsCallback())
- $this->renderSuggestions($this->getResponse()->createHtmlWriter());
- }
-
- /**
- * @return TPanel suggestion results panel.
- */
- public function getResultPanel()
- {
- if($this->_resultPanel===null)
- $this->_resultPanel = $this->createResultPanel();
- return $this->_resultPanel;
- }
-
- /**
- * @return TPanel new instance of result panel. Default uses TPanel.
- */
- protected function createResultPanel()
- {
- $panel = Prado::createComponent('System.Web.UI.WebControls.TPanel');
- $this->getControls()->add($panel);
- $panel->setID('result');
- return $panel;
- }
-
- /**
- * @return TRepeater suggestion list repeater
- */
- public function getSuggestions()
- {
- if($this->_repeater===null)
- $this->_repeater = $this->createRepeater();
- return $this->_repeater;
- }
-
- /**
- * @return TRepeater new instance of TRepater to render the list of suggestions.
- */
- protected function createRepeater()
- {
- $repeater = Prado::createComponent('System.Web.UI.WebControls.TRepeater');
- $repeater->setHeaderTemplate(new TAutoCompleteTemplate('<ul>'));
- $repeater->setFooterTemplate(new TAutoCompleteTemplate('</ul>'));
- $repeater->setItemTemplate(new TTemplate('<li><%# $this->DataItem %></li>',null));
- $repeater->setEmptyTemplate(new TAutoCompleteTemplate('<ul></ul>'));
- $this->getControls()->add($repeater);
- return $repeater;
- }
-
- /**
- * Renders the end tag and registers javascript effects library.
- */
- public function renderEndTag($writer)
- {
- $this->getPage()->getClientScript()->registerPradoScript('effects');
- parent::renderEndTag($writer);
- $this->renderResultPanel($writer);
- }
-
- /**
- * Renders the result panel.
- * @param THtmlWriter the renderer.
- */
- protected function renderResultPanel($writer)
- {
- $this->getResultPanel()->render($writer);
- }
-
- /**
- * Renders the suggestions during a callback respones.
- * @param THtmlWriter the renderer.
- */
- public function renderCallback($writer)
- {
- $this->renderSuggestions($writer);
- }
-
- /**
- * Renders the suggestions repeater.
- * @param THtmlWriter the renderer.
- */
- public function renderSuggestions($writer)
- {
- if($this->getActiveControl()->canUpdateClientSide())
- {
- $this->getSuggestions()->render($writer);
- $boundary = $writer->getWriter()->getBoundary();
- $this->getResponse()->getAdapter()->setResponseData($boundary);
- }
- }
-
- /**
- * @return array list of callback options.
- */
- protected function getPostBackOptions()
- {
- //disallow page state update ?
- //$this->getActiveControl()->getClientSide()->setEnablePageStateUpdate(false);
- $options = array();
- if(strlen($string = $this->getSeparator()))
- {
- $string = strtr($string,array('\t'=>"\t",'\n'=>"\n",'\r'=>"\r"));
- $token = preg_split('//', $string, -1, PREG_SPLIT_NO_EMPTY);
- $options['tokens'] = $token;
- }
- if($this->getAutoPostBack())
- {
- $options = array_merge($options,parent::getPostBackOptions());
- $options['AutoPostBack'] = true;
- }
- if(strlen($select = $this->getTextCssClass()))
- $options['select'] = $select;
- $options['ResultPanel'] = $this->getResultPanel()->getClientID();
- $options['ID'] = $this->getClientID();
- $options['EventTarget'] = $this->getUniqueID();
- if(($minchars=$this->getMinChars())!=='')
- $options['minChars'] = $minchars;
- if(($frequency=$this->getFrequency())!=='')
- $options['frequency'] = $frequency;
- $options['CausesValidation'] = $this->getCausesValidation();
- $options['ValidationGroup'] = $this->getValidationGroup();
- return $options;
- }
-
- /**
- * Override parent implementation, no javascript is rendered here instead
- * the javascript required for active control is registered in {@link addAttributesToRender}.
- */
- protected function renderClientControlScript($writer)
- {
- }
-
- /**
- * @return string corresponding javascript class name for this TActiveButton.
- */
- protected function getClientClassName()
- {
- return 'Prado.WebUI.TAutoComplete';
- }
-}
-
-/**
- * TAutCompleteEventParameter contains the {@link getToken Token} requested by
- * the user for a partial match of the suggestions.
- *
- * The {@link getSelectedIndex SelectedIndex} is a zero-based index of the
- * suggestion selected by the user, -1 if not suggestion is selected.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id: TAutoComplete.php 3245 2013-01-07 20:23:32Z ctrlaltca $
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TAutoCompleteEventParameter extends TCallbackEventParameter
-{
- private $_selectedIndex=-1;
-
- /**
- * Creates a new TCallbackEventParameter.
- */
- public function __construct($response, $parameter, $index=-1)
- {
- parent::__construct($response, $parameter);
- $this->_selectedIndex=$index;
- }
-
- /**
- * @return int selected suggestion zero-based index, -1 if not selected.
- */
- public function getSelectedIndex()
- {
- return $this->_selectedIndex;
- }
-
- /**
- * @return string token for matching a list of suggestions.
- */
- public function getToken()
- {
- return $this->getCallbackParameter();
- }
-}
-
-/**
- * TAutoCompleteTemplate class.
- *
- * TAutoCompleteTemplate is the default template for TAutoCompleteTemplate
- * item template.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id: TAutoComplete.php 3245 2013-01-07 20:23:32Z ctrlaltca $
- * @package System.Web.UI.ActiveControls
- * @since 3.1
- */
-class TAutoCompleteTemplate extends TComponent implements ITemplate
-{
- private $_template;
-
- public function __construct($template)
- {
- $this->_template = $template;
- }
- /**
- * Instantiates the template.
- * It creates a {@link TDataList} control.
- * @param TControl parent to hold the content within the template
- */
- public function instantiateIn($parent)
- {
- $parent->getControls()->add($this->_template);
- }
-}
-