WebSVN – lars-tiefland.cakephp – /cake/libs/view/helpers/js.php

<?php
/* SVN FILE: $Id: js.php 7945 2008-12-19 02:16:01Z gwoo $ */
/**
 * Javascript Generator class file.
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2006-2008, Cake Software Foundation, Inc.
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2006-2008, Cake Software Foundation, Inc.
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 * @since         CakePHP v 1.2
 * @version       $Revision: 7945 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Javascript Generator helper class for easy use of JavaScript.
 *
 * JsHelper provides an abstract interface for authoring JavaScript with a
 * given client-side library.
 *
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 */
class JsHelper extends Overloadable2 {
        var $base = null;
        var $webroot = null;
        var $here = null;
        var $params = null;
        var $action = null;
        var $data = null;
        var $themeWeb = null;
        var $plugin = null;

        var $helpers = array();

        var $hook = null;

        var $__objects = array();

        var $effectMap = array(
                'Appear', 'Fade', 'Puff', 'BlindDown', 'BlindUp', 'SwitchOff', 'SlideDown', 'SlideUp',
                'DropOut', 'Shake', 'Pulsate', 'Squish', 'Fold', 'Grow', 'Shrink', 'Highlight', 'toggle'
        );

        var $output = false;

        function __construct() {
                $this->effectMap = array_combine(
                        array_map('strtolower', $this->effectMap),
                        $this->effectMap
                );
                parent::__construct();
        }

        function call__($method, $params) {
                if (is_object($this->hook) && method_exists($this->hook, $method)) {
                        $this->hook->dispatchMethod($method . '_', $params);
                }
                if (method_exists($this, $method . '_')) {
                        return $this->dispatchMethod($method . '_', $params);
                }
        }

        function alert_($message) {
                return 'alert("' . $this->escape($message) . '");';
        }

        function if_($if, $then, $else = null, $elseIf = array()) {
                $len = strlen($if) - 1;
                if ($if{$len} == ';') {
                        $if{$len} = null;
                }

                $out = 'if (' . $if . ') { ' . $then . ' }';

                foreach ($elseIf as $cond => $exec) {
                        //$out .=
                }

                if (!empty($else)) {
                        $out .= ' else { ' . $else . ' }';
                }

                return $out;
        }

        function confirm_($message) {
                return 'confirm("' . $this->escape($message) . '");';
        }

        function prompt_($message, $default = '') {
                return 'prompt("' . $this->escape($message) . '", "' . $this->escape($default) . '");';
        }
/*
 * Tries a series of expressions, and executes after first successful completion.
 * (See Prototype's Try.these).
 *
 * @return string
 */
        function tryThese_($expr1, $expr2, $expr3) {
        }
/**
 * Loads a remote URL
 *
 * @param  string $url
 * @param  array  $options
 * @return string
 */
        function load_($url = null, $options = array()) {

                if (isset($options['update'])) {
                        if (!is_array($options['update'])) {
                                $func = "new Ajax.Updater('{$options['update']}',";
                        } else {
                                $func = "new Ajax.Updater(document.createElement('div'),";
                        }
                        if (!isset($options['requestHeaders'])) {
                                $options['requestHeaders'] = array();
                        }
                        if (is_array($options['update'])) {
                                $options['update'] = join(' ', $options['update']);
                        }
                        $options['requestHeaders']['X-Update'] = $options['update'];
                } else {
                        $func = "new Ajax.Request(";
                }

                $func .= "'" . Router::url($url) . "'";
                $ajax =& new AjaxHelper();
                $func .= ", " . $ajax->__optionsForAjax($options) . ")";

                if (isset($options['before'])) {
                        $func = "{$options['before']}; $func";
                }
                if (isset($options['after'])) {
                        $func = "$func; {$options['after']};";
                }
                if (isset($options['condition'])) {
                        $func = "if ({$options['condition']}) { $func; }";
                }
                if (isset($options['confirm'])) {
                        $func = "if (confirm('" . $this->Javascript->escapeString($options['confirm'])
                                . "')) { $func; } else { return false; }";
                }
                return $func;
        }
/**
 * Redirects to a URL
 *
 * @param  mixed $url
 * @param  array  $options
 * @return string
 */
        function redirect_($url = null) {
                return 'window.location = "' . Router::url($url) . '";';
        }
/**
 * Escape a string to be JavaScript friendly.
 *
 * List of escaped ellements:
 *      + "\r\n" => '\n'
 *      + "\r" => '\n'
 *      + "\n" => '\n'
 *      + '"' => '\"'
 *      + "'" => "\\'"
 *
 * @param  string $script String that needs to get escaped.
 * @return string Escaped string.
 */
        function escape($string) {
                $escape = array("\r\n" => '\n', "\r" => '\n', "\n" => '\n', '"' => '\"', "'" => "\\'");
                return str_replace(array_keys($escape), array_values($escape), $string);
        }

        function get__($name) {
                return $this->__object($name, 'id');
        }

        function select($pattern) {
                return $this->__object($pattern, 'pattern');
        }

        function real($var) {
                return $this->__object($var, 'real');
        }

        function __object($name, $var) {
                if (!isset($this->__objects[$name])) {
                        $this->__objects[$name] = new JsHelperObject($this);
                        $this->__objects[$name]->{$var} = $name;
                }
                return $this->__objects[$name];
        }
/**
 * Generates a JavaScript object in JavaScript Object Notation (JSON)
 * from an array
 *
 * @param array $data Data to be converted
 * @param boolean $block Wraps return value in a <script/> block if true
 * @param string $prefix Prepends the string to the returned data
 * @param string $postfix Appends the string to the returned data
 * @param array $stringKeys A list of array keys to be treated as a string
 * @param boolean $quoteKeys If false, treats $stringKey as a list of keys *not* to be quoted
 * @param string $q The type of quote to use
 * @return string A JSON code block
 */
        function object($data = array(), $block = false, $prefix = '', $postfix = '', $stringKeys = array(), $quoteKeys = true, $q = "\"") {
                if (is_object($data)) {
                        $data = get_object_vars($data);
                }

                $out = array();
                $key = array();

                if (is_array($data)) {
                        $keys = array_keys($data);
                }

                $numeric = true;

                if (!empty($keys)) {
                        foreach ($keys as $key) {
                                if (!is_numeric($key)) {
                                        $numeric = false;
                                        break;
                                }
                        }
                }

                foreach ($data as $key => $val) {
                        if (is_array($val) || is_object($val)) {
                                $val = $this->object($val, false, '', '', $stringKeys, $quoteKeys, $q);
                        } else {
                                if ((!count($stringKeys) && !is_numeric($val) && !is_bool($val)) || ($quoteKeys && in_array($key, $stringKeys)) || (!$quoteKeys && !in_array($key, $stringKeys)) && $val !== null) {
                                        $val = $q . $this->escapeString($val) . $q;
                                }
                                if ($val == null) {
                                        $val = 'null';
                                }
                        }

                        if (!$numeric) {
                                $val = $q . $key . $q . ':' . $val;
                        }

                        $out[] = $val;
                }

                if (!$numeric) {
                        $rt = '{' . join(', ', $out) . '}';
                } else {
                        $rt = '[' . join(', ', $out) . ']';
                }
                $rt = $prefix . $rt . $postfix;

                if ($block) {
                        $rt = $this->codeBlock($rt);
                }

                return $rt;
        }
}

class JsHelperObject {
        var $__parent = null;

        var $id = null;

        var $pattern = null;

        var $real = null;

        function __construct(&$parent) {
                if (is_object($parent)) {
                        $this->setParent($parent);
                }
        }

        function toString() {
                return $this->__toString();
        }

        function __toString() {
                return $this->literal;
        }

        function ref($ref = null) {
                if ($ref == null) {
                        foreach (array('id', 'pattern', 'real') as $ref) {
                                if ($this->{$ref} !== null) {
                                        return $this->{$ref};
                                }
                        }
                } else {
                        return ($this->{$ref} !== null);
                }
                return null;
        }

        function literal($append = null) {
                if (!empty($this->id)) {
                        $data = '$("' . $this->id . '")';
                }
                if (!empty($this->pattern)) {
                        $data = '$$("' . $this->pattern . '")';
                }
                if (!empty($this->real)) {
                        $data = $this->real;
                }
                if (!empty($append)) {
                        $data .= '.' . $append;
                }
                return $data;
        }

        function __call($name, $args) {
                $data = '';

                if (isset($this->__parent->effectMap[strtolower($name)])) {
                        array_unshift($args, $this->__parent->effectMap[strtolower($name)]);
                        $name = 'effect';
                }

                switch ($name) {
                        case 'effect':
                        case 'visualEffect':

                                if (strpos($args[0], '_') || $args[0]{0} != strtoupper($args[0]{0})) {
                                        $args[0] = Inflector::camelize($args[0]);
                                }

                                if (strtolower($args[0]) == 'highlight') {
                                        $data .= 'new ';
                                }
                                if ($this->pattern == null) {
                                        $data .= 'Effect.' . $args[0] . '(' . $this->literal();
                                } else {
                                        $data .= 'Effect.' . $args[0] . '(item';
                                }

                                if (isset($args[1]) && is_array($args[1])) {
                                        $data .= ', {' . $this->__options($args[1]) . '}';
                                }
                                $data .= ');';

                                if ($this->pattern !== null) {
                                        $data = $this->each($data);
                                }
                        break;
                        case 'remove':
                        case 'toggle':
                        case 'show':
                        case 'hide':
                                if (empty($args)) {
                                        $obj = 'Element';
                                        $params = '';
                                } else {
                                        $obj = 'Effect';
                                        $params = ', "' . $args[0] . '"';
                                }

                                if ($this->pattern != null) {
                                        $data = $this->each($obj . ".{$name}(item);");
                                } else {
                                        $data = $obj . ".{$name}(" . $this->literal() . ');';
                                }
                        break;
                        case 'visible':
                                $data = $this->literal() . '.visible();';
                        break;
                        case 'update':
                                $data = $this->literal() . ".update({$args[0]});";
                        break;
                        case 'load':
                                $data = 'new Ajax.Updater("' . $this->id . '", "' . $args[0] . '"';
                                if (isset($args[1]) && is_array($args[1])) {
                                        $data .= ', {' . $this->__options($args[1]) . '}';
                                }
                                $data .= ');';
                        break;
                        case 'each':
                        case 'all':
                        case 'any':
                        case 'detect':
                        case 'findAll':
                                if ($this->pattern != null) {
                                        $data = $this->__iterate($name, $args[0]);
                                }
                        break;
                        case 'addClass':
                        case 'removeClass':
                        case 'hasClass':
                        case 'toggleClass':
                                $data = $this->literal() . ".{$name}Name(\"{$args[0]}\");";
                        break;
                        case 'clone':
                        case 'inspect':
                        case 'keys':
                        case 'values':
                                $data = "Object.{$name}(" . $this->literal() . ");";
                        break;
                        case 'extend':
                                $data = "Object.extend(" . $this->literal() . ", {$args[0]});";
                        break;
                        case '...':
                                // Handle other methods here
                                // including interfaces to load other files on-the-fly
                                // that add support for additional methods/replacing existing methods
                        break;
                        default:
                                $data = $this->literal() . '.' . $name . '();';
                        break;
                }

                if ($this->__parent->output) {
                        echo $data;
                } else {
                        return $data;
                }
        }

        function __iterate($method, $data) {
                return '$$("' . $this->pattern . '").' . $method . '(function(item) {' . $data . '});';
        }

        function setParent(&$parent) {
                $this->__parent =& $parent;
        }

        function __options($opts) {
                $options = array();
                foreach ($opts as $key => $val) {
                        if (!is_int($val)) {
                                $val = '"' . $val . '"';
                        }
                        $options[] = $key . ':' . $val;
                }
                return join(', ', $options);
        }
}
?>
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(root)/cake/libs/view/helpers/js.php @ 10 – Revision 1
