Ajax.php

浏览该文件的文档。

<?php
// FleaPHP Framework
//
// Copyright (c) 2005 - 2008 QeeYuan China Inc. (http://www.qeeyuan.com)
//
// 许可协议，请查看源代码中附带的 LICENSE.txt 文件，
// 或者访问 http://www.fleaphp.org/ 获得详细信息。

class FLEA_Ajax
{
    var $events;

    var $paramsType = array(
        'async'         => 'boolean',
        'beforeSend'    => 'function',
        'complete'      => 'function',
        'contentType'   => 'string',
        'params'        => 'pair',
        'data'          => 'object',
        'dataType'      => 'string',
        'error'         => 'function',
        'global'        => 'boolean',
        'ifModified'    => 'boolean',
        'processData'   => 'boolean',
        'success'       => 'function',
        'timeout'       => 'number',
        'type'          => 'string',
        'url'           => 'string',

        'beforeSubmit'  => 'function',
        'semantic'      => 'boolean',
        'clearForm'     => 'boolean',
        'resetForm'     => 'boolean',

        'target'        => 'object',
        'targetValue'   => 'object',
        'clearTarget'   => 'boolean',
    );

    function FLEA_Ajax()
    {
        $this->_events = array();
    }

    function dumpJs($return = false, $wrapper = true)
    {
        $out = '';
        if ($wrapper) {
            $out .= "<script language=\"JavaScript\" type=\"text/javascript\">\n";
        }

        // 输出检查 JavaScript 库是否已经正确加载的 JavaScript 代码
        $out .= $this->returnCheckJs();

        // 为已经在服务端注册的事件输出需要的 JavaScript 代码
        $out .= $this->returnEventJs($this->_events);

        if ($wrapper) {
            $out .= "</script>\n";
        }

        if ($return) {
            return $out;
        } else {
            echo $out;
            return null;
        }
    }

    function registerEvent($control, $event, $url, $attribs = null)
    {
        $control2 = preg_replace('/[^a-z0-9_]+/i', '', $control);
        $functionName = "ajax_{$control2}_on{$event}";
        $this->_events[] = array($control, $event, $url, $attribs, $functionName);
        return $functionName;
    }

    function returnCheckJs()
    {
        $version = FLEA_VERSION;
        return <<<EOT
// generated by FleaPHP {$version}
if (typeof window.jQuery == "undefined") {
  alert('ERROR: jQuery JavaScript framework failed.');
}


EOT;
    }

    function returnEventJs(& $eventList)
    {
        $bindEvents = array();
        $out = '';
        foreach ($eventList as $event) {
            $out .= $this->_insertAjaxRequest($event, $bindEvents) . "\n";
        }
        $bindEvents = implode("\n", $bindEvents);
        return $out . "\n$(function() {\n{$bindEvents}\n});\n";
    }

    function _insertAjaxRequest($eventArr, & $bindEvents)
    {
        list($control, $event, $url, $attribs, $functionName) = $eventArr;
        $this->_formatAttribs($attribs);
        $bindEvents[] = "    $(\"{$control}\").bind(\"{$event}\", function() { return {$functionName}(); });";

        $beforeRequest = array();
        $call = $event == 'submit' ? "$(\"{$control}\").ajaxSubmit" : "$.ajax";

        if (isset($attribs['params'])) {
            $params = array();
            parse_str($attribs['params'], $params);
            $params = (array)$params;
            if (!empty($params)) {
                $params = encode_url_args($params, FLEA::getAppInf('urlMode'));
                switch (FLEA::getAppInf('urlMode')) {
                case URL_PATHINFO:
                case URL_REWRITE:
                    $url .= '/' . $params;
                    break;
                default:
                    if (strpos($url, '?') === false) {
                        $url .= '?';
                    } else {
                        $url .= '&';
                    }
                    $url .= $params;
                }
            }
            unset($attribs['params']);
        }
        $attribs['url'] = '"' . t2js($url) . '"';

        if (!isset($attribs['type'])) {
            $attribs['type'] = '"post"';
        }

        if (isset($attribs['target']) || isset($attribs['targetValue'])) {
            $targetType = isset($attribs['target']) ? 'html' : 'val';
            $target = ($targetType == 'html') ? $attribs['target'] : $attribs['targetValue'];

            if (isset($attribs['clearTarget']) && $attribs['clearTarget']) {
                $beforeRequest[] = "    {$target}.{$targetType}(\"\");";
            }

            $success = isset($attribs['success']) ? trim($attribs['success']) : '';
            if ($success) {
                $success = preg_replace('/function.+{/i', '{', $success);
                if (substr($success, -1) != ';') { $success .= ';'; }
                $success = "            {$success}\n";
            }

            $attribs['success'] = <<<EOT
function(data) {
            {$target}.{$targetType}(data);
{$success}        }
EOT;

            unset($attribs['target']);
            unset($attribs['targetValue']);
            unset($attribs['clearTarget']);
        }

        $options = '';
        foreach ($attribs as $option => $value) {
            $options .= "        {$option}: {$value},\n";
        }
        $options = substr($options, 0, -2);

        $beforeRequest = implode("\n", $beforeRequest);
        if ($beforeRequest) {
            $beforeRequest = "\n{$beforeRequest}";
        }
        $function = <<<EOT
function {$functionName}()
{{$beforeRequest}
    {$call}({
{$options}
    });

    return false;
}

EOT;

        return $function;
    }

    function _formatAttribs(& $attribs)
    {
        // 格式化参数
        foreach ($attribs as $option => $value) {
            if (!isset($this->paramsType[$option])) {
                $type = 'object';
            } else {
                $type = $this->paramsType[$option];
            }

            switch ($type) {
            case 'raw':
            case 'function':
            case 'number':
                break;
            case 'pair':
                if (is_array($value)) {
                    $value = t2js(encode_url_args($value));
                }
                break;
            case 'boolean':
                $value = $value ? 'true' : 'false';
                break;
            case 'object':
                $value = "$(\"{$value}\")";
                break;
            case 'string':
            default:
                $value = '"' . t2js($value) . '"';
            }

            $attribs[$option] = $value;
        }
    }
}

---