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phpMyAdmin/libraries/classes/Scripts.php

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+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * JavaScript management
+ *
+ * @package PhpMyAdmin
+ */
+namespace PhpMyAdmin;
+
+use PhpMyAdmin\Header;
+use PhpMyAdmin\Sanitize;
+use PhpMyAdmin\Url;
+
+/**
+ * Collects information about which JavaScript
+ * files and objects are necessary to render
+ * the page and generates the relevant code.
+ *
+ * @package PhpMyAdmin
+ */
+class Scripts
+{
+    /**
+     * An array of SCRIPT tags
+     *
+     * @access private
+     * @var array of strings
+     */
+    private $_files;
+    /**
+     * An array of discrete javascript code snippets
+     *
+     * @access private
+     * @var array of strings
+     */
+    private $_code;
+
+    /**
+     * Returns HTML code to include javascript file.
+     *
+     * @param array $files The list of js file to include
+     *
+     * @return string HTML code for javascript inclusion.
+     */
+    private function _includeFiles(array $files)
+    {
+        $result = '';
+        foreach ($files as $value) {
+            if (strpos($value['filename'], ".php") !== false) {
+                $file_name = $value['filename'] . Url::getCommon($value['params'] + array('v' => PMA_VERSION));
+                $result .= "<script data-cfasync='false' "
+                    . "type='text/javascript' src='js/" . $file_name
+                    . "'></script>\n";
+            } else {
+                $result .= '<script data-cfasync="false" type="text/javascript" src="js/'
+                    .  $value['filename'] . '?' . Header::getVersionParameter() . '"></script>' . "\n";
+            }
+        }
+        return $result;
+    }
+
+    /**
+     * Generates new Scripts objects
+     *
+     */
+    public function __construct()
+    {
+        $this->_files  = array();
+        $this->_code   = '';
+
+    }
+
+    /**
+     * Adds a new file to the list of scripts
+     *
+     * @param string $filename The name of the file to include
+     * @param array  $params   Additional parameters to pass to the file
+     *
+     * @return void
+     */
+    public function addFile(
+        $filename,
+        array $params = array()
+    ) {
+        $hash = md5($filename);
+        if (!empty($this->_files[$hash])) {
+            return;
+        }
+
+        $has_onload = $this->_eventBlacklist($filename);
+        $this->_files[$hash] = array(
+            'has_onload' => $has_onload,
+            'filename' => $filename,
+            'params' => $params,
+        );
+    }
+
+    /**
+     * Add new files to the list of scripts
+     *
+     * @param array $filelist The array of file names
+     *
+     * @return void
+     */
+    public function addFiles(array $filelist)
+    {
+        foreach ($filelist as $filename) {
+            $this->addFile($filename);
+        }
+    }
+
+    /**
+     * Determines whether to fire up an onload event for a file
+     *
+     * @param string $filename The name of the file to be checked
+     *                         against the blacklist
+     *
+     * @return int 1 to fire up the event, 0 not to
+     */
+    private function _eventBlacklist($filename)
+    {
+        if (strpos($filename, 'jquery') !== false
+            || strpos($filename, 'codemirror') !== false
+            || strpos($filename, 'messages.php') !== false
+            || strpos($filename, 'ajax.js') !== false
+            || strpos($filename, 'cross_framing_protection.js') !== false
+        ) {
+            return 0;
+        }
+
+        return 1;
+    }
+
+    /**
+     * Adds a new code snippet to the code to be executed
+     *
+     * @param string $code The JS code to be added
+     *
+     * @return void
+     */
+    public function addCode($code)
+    {
+        $this->_code .= "$code\n";
+    }
+
+    /**
+     * Returns a list with filenames and a flag to indicate
+     * whether to register onload events for this file
+     *
+     * @return array
+     */
+    public function getFiles()
+    {
+        $retval = array();
+        foreach ($this->_files as $file) {
+            //If filename contains a "?", continue.
+            if (strpos($file['filename'], "?") !== false) {
+                continue;
+            }
+            $retval[] = array(
+                'name' => $file['filename'],
+                'fire' => $file['has_onload']
+            );
+
+        }
+        return $retval;
+    }
+
+    /**
+     * Renders all the JavaScript file inclusions, code and events
+     *
+     * @return string
+     */
+    public function getDisplay()
+    {
+        $retval = '';
+
+        if (count($this->_files) > 0) {
+            $retval .= $this->_includeFiles(
+                $this->_files
+            );
+        }
+
+        $code = 'AJAX.scriptHandler';
+        foreach ($this->_files as $file) {
+            $code .= sprintf(
+                '.add("%s",%d)',
+                Sanitize::escapeJsString($file['filename']),
+                $file['has_onload'] ? 1 : 0
+            );
+        }
+        $code .= ';';
+        $this->addCode($code);
+
+        $code = '$(function() {';
+        foreach ($this->_files as $file) {
+            if ($file['has_onload']) {
+                $code .= 'AJAX.fireOnload("';
+                $code .= Sanitize::escapeJsString($file['filename']);
+                $code .= '");';
+            }
+        }
+        $code .= '});';
+        $this->addCode($code);
+
+        $retval .= '<script data-cfasync="false" type="text/javascript">';
+        $retval .= "// <![CDATA[\n";
+        $retval .= $this->_code;
+        $retval .= '// ]]>';
+        $retval .= '</script>';
+
+        return $retval;
+    }
+}