295 lines
10 KiB
PHP
295 lines
10 KiB
PHP
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<?php
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/**
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* CAutoComplete class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CAutoComplete generates an auto-complete text field.
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*
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* CAutoComplete is based on the {@link http://plugins.jquery.com/project/autocompletex jQuery Autocomplete}.
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*
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* This class is deprecated since Yii 1.1.3. Consider using CJuiAutoComplete.
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* There is {@link http://www.learningjquery.com/2010/06/autocomplete-migration-guide a good migration guide from the author of both JavaScript solutions}.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.web.widgets
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* @since 1.0
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* @deprecated in 1.1.3
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*/
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class CAutoComplete extends CInputWidget
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{
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/**
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* @var boolean whether to show the autocomplete using a text area. Defaults to false,
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* meaning a text field is used.
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*/
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public $textArea=false;
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/**
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* @var array data that would be saved as client-side data to provide candidate selections.
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* Each array element can be string or an associative array.
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* The {@link url} property will be ignored if this property is set.
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* @see url
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*/
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public $data;
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/**
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* @var string|array the URL that can return the candidate selections.
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* A 'q' GET parameter will be sent with the URL which contains what the user has entered so far.
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* If the URL is given as an array, it is considered as a route to a controller action and will
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* be used to generate a URL using {@link CController::createUrl};
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* If the URL is an empty string, the currently requested URL is used.
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* This property will be ignored if {@link data} is set.
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* @see data
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*/
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public $url='';
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/**
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* @var mixed the CSS file used for the widget. Defaults to null, meaning
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* using the default CSS file included together with the widget.
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* If false, no CSS file will be used. Otherwise, the specified CSS file
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* will be included when using this widget.
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*/
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public $cssFile;
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/**
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* @var integer the minimum number of characters a user has to type before
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* the autocompleter activates. Defaults to 1.
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*/
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public $minChars;
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/**
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* @var integer the delay in milliseconds the autocompleter waits after
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* a keystroke to activate itself. Defaults to 400.
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*/
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public $delay;
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/**
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* @var integer the number of backend query results to store in cache.
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* If set to 1 (the current result), no caching will happen. Must be >= 1. Defaults to 10.
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*/
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public $cacheLength;
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/**
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* @var boolean whether or not the autocompleter can use a cache for more
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* specific queries. This means that all matches of "foot" are a subset
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* of all matches for "foo". Usually this is true, and using this options
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* decreases server load and increases performance. Only useful with
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* cacheLength settings bigger than one, like 10. Defaults to true.
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*/
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public $matchSubset;
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/**
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* @var boolean whether or not the comparison is case sensitive. Important
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* only if you use caching. Defaults to false.
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*/
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public $matchCase;
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/**
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* @var boolean whether or not the comparison looks inside
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* (i.e. does "ba" match "foo bar") the search results. Important only if
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* you use caching. Don't mix with autofill. Defaults to false.
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*/
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public $matchContains;
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/**
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* @var boolean if set to true, the autocompleter will only allow results that
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* are presented by the backend. Note that illegal values result in an empty
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* input box. Defaults to false.
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*/
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public $mustMatch;
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/**
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* @var boolean if this is set to true, the first autocomplete value will
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* be automatically selected on tab/return, even if it has not been handpicked
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* by keyboard or mouse action. If there is a handpicked (highlighted) result,
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* that result will take precedence. Defaults to true.
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*/
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public $selectFirst;
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/**
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* @var array extra parameters for the backend. If you were to specify
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* array('bar'=>4), the autocompleter would call the backend with a GET
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* parameter 'bar' 4. The param can be a function that is called to calculate
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* the param before each request.
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*/
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public $extraParams;
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/**
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* @var string a javascript function that provides advanced markup for an item.
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* For each row of results, this function will be called. The returned value will
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* be displayed inside an LI element in the results list. Autocompleter will
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* provide 4 parameters: the results row, the position of the row in the list of
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* results (starting at 1), the number of items in the list of results and the search term.
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* The default behavior assumes that a single row contains a single value.
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*/
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public $formatItem;
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/**
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* @var string a javascript function that can be used to limit the data that autocomplete
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* searches for matches. For example, there may be items you want displayed to the user,
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* but don't want included in the data that's searched. The function is called with the same arguments
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* as {@link formatItem}. Defaults to formatItem.
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*/
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public $formatMatch;
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/**
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* @var string a javascript function that provides the formatting for the value to be
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* put into the input field. Again three arguments: Data, position (starting with one) and
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* total number of data. The default behavior assumes either plain data to use as result
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* or uses the same value as provided by formatItem.
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*/
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public $formatResult;
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/**
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* @var boolean whether to allow more than one autocompleted-value to enter. Defaults to false.
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*/
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public $multiple;
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/**
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* @var string seperator to put between values when using multiple option. Defaults to ", ".
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*/
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public $multipleSeparator;
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/**
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* @var integer specify a custom width for the select box. Defaults to the width of the input element.
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*/
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public $width;
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/**
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* @var boolean fill the textinput while still selecting a value, replacing the value
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* if more is typed or something else is selected. Defaults to false.
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*/
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public $autoFill;
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/**
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* @var integer limit the number of items in the select box. Is also sent as
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* a "limit" parameter with a remote request. Defaults to 10.
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*/
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public $max;
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/**
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* @var boolean|string Whether and how to highlight matches in the select box.
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* Set to false to disable. Set to a javascript function to customize.
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* The function gets the value as the first argument and the search term as the
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* second and must return the formatted value. Defaults to Wraps the search term in a <strong> element.
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*/
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public $highlight;
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/**
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* @var boolean whether to scroll when more results than configured via scrollHeight are available. Defaults to true.
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*/
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public $scroll;
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/**
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* @var integer height of scrolled autocomplete control in pixels. Defaults to 180.
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*/
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public $scrollHeight;
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/**
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* @var string the CSS class for the input element. Defaults to "ac_input".
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*/
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public $inputClass;
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/**
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* @var string the CSS class for the dropdown list. Defaults to "ac_results".
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*/
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public $resultsClass;
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/**
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* @var string the CSS class used when the data is being loaded from backend. Defaults to "ac_loading".
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*/
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public $loadingClass;
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/**
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* @var array additional options that can be passed to the constructor of the autocomplete js object.
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* This allows you to override existing functions of the autocomplete js class (e.g. the parse() function)
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*
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* If you want to provide JavaScript native code, you have to wrap the string with {@link CJavaScriptExpression} otherwise it will
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* be enclosed by quotes.
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*/
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public $options=array();
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/**
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* @var string the chain of method calls that would be appended at the end of the autocomplete constructor.
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* For example, ".result(function(...){})" would cause the specified js function to execute
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* when the user selects an option.
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*/
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public $methodChain;
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/**
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* Initializes the widget.
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* This method registers all needed client scripts and renders
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* the autocomplete input.
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*/
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public function init()
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{
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list($name,$id)=$this->resolveNameID();
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if(isset($this->htmlOptions['id']))
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$id=$this->htmlOptions['id'];
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else
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$this->htmlOptions['id']=$id;
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if(isset($this->htmlOptions['name']))
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$name=$this->htmlOptions['name'];
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$this->registerClientScript();
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if($this->hasModel())
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{
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$field=$this->textArea ? 'activeTextArea' : 'activeTextField';
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echo CHtml::$field($this->model,$this->attribute,$this->htmlOptions);
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}
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else
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{
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$field=$this->textArea ? 'textArea' : 'textField';
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echo CHtml::$field($name,$this->value,$this->htmlOptions);
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}
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}
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/**
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* Registers the needed CSS and JavaScript.
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*/
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public function registerClientScript()
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{
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$id=$this->htmlOptions['id'];
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$acOptions=$this->getClientOptions();
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$options=$acOptions===array()?'{}' : CJavaScript::encode($acOptions);
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$cs=Yii::app()->getClientScript();
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$cs->registerCoreScript('autocomplete');
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if($this->data!==null)
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$data=CJavaScript::encode($this->data);
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else
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{
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$url=CHtml::normalizeUrl($this->url);
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$data='"'.$url.'"';
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}
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$cs->registerScript('Yii.CAutoComplete#'.$id,"jQuery(\"#{$id}\").legacyautocomplete($data,{$options}){$this->methodChain};");
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if($this->cssFile!==false)
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self::registerCssFile($this->cssFile);
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}
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/**
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* Registers the needed CSS file.
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* @param string $url the CSS URL. If null, a default CSS URL will be used.
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*/
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public static function registerCssFile($url=null)
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{
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$cs=Yii::app()->getClientScript();
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if($url===null)
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$url=$cs->getCoreScriptUrl().'/autocomplete/jquery.autocomplete.css';
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$cs->registerCssFile($url);
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}
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/**
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* @return array the javascript options
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*/
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protected function getClientOptions()
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{
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static $properties=array(
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'minChars', 'delay', 'cacheLength', 'matchSubset',
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'matchCase', 'matchContains', 'mustMatch', 'selectFirst',
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'extraParams', 'multiple', 'multipleSeparator', 'width',
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'autoFill', 'max', 'scroll', 'scrollHeight', 'inputClass',
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'resultsClass', 'loadingClass');
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static $functions=array('formatItem', 'formatMatch', 'formatResult', 'highlight');
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$options=$this->options;
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foreach($properties as $property)
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{
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if($this->$property!==null)
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$options[$property]=$this->$property;
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}
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foreach($functions as $func)
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{
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if($this->$func!==null)
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{
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if($this->$func instanceof CJavaScriptExpression)
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$options[$func]=$this->$func;
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else
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$options[$func]=new CJavaScriptExpression($this->$func);
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}
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}
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return $options;
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}
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}
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