1 files changed, 112 insertions, 0 deletions
diff --git a/plugins/legacy_browser/legacy_browser.php b/plugins/legacy_browser/legacy_browser.php
new file mode 100644
index 000000000..346a0ed8e
--- /dev/null
+++ b/plugins/legacy_browser/legacy_browser.php
@@ -0,0 +1,112 @@
+<?php
+
+/**
+ * Plugin which adds support for legacy browsers (IE 7/8, Firefox < 4)
+ *
+ * @author Aleksander Machniak <alec@alec.pl>
+ * @license GNU GPLv3+
+ */
+class legacy_browser extends rcube_plugin
+{
+    public $noajax = true;
+    private $rc;
+
+    public function init()
+    {
+        $this->rc = $rcube = rcube::get_instance();
+
+        if (
+            // IE < 9
+            ($rcube->output->browser->ie && $rcube->output->browser->ver < 9)
+            // Firefox < 4 (Firefox 4 is recognized as 2.0)
+            || ($rcube->output->browser->mz && $rcube->output->browser->ver < 2)
+        ) {
+            $this->add_hook('send_page', array($this, 'send_page'));
+            $this->add_hook('render_page', array($this, 'render_page'));
+        }
+    }
+
+    function send_page($args)
+    {
+        $p1 = $this->rc->output->asset_url('program/js');
+        $p2 = $this->rc->output->asset_url('plugins/legacy_browser/js');
+
+        $assets_dir = $this->rc->config->get('assets_dir');
+
+        $ts1 = filemtime($this->home . '/js/jquery.min.js');
+        $ts2 = filemtime($this->home . '/js/iehacks.js');
+
+        if (!$ts1 && $assets_dir) {
+            $ts1 = filemtime($assets_dir . '/plugins/legacy_browser/js/jquery.min.js');
+        }
+        if (!$ts2 && $assets_dir) {
+            $ts2 = filemtime($assets_dir . '/plugins/legacy_browser/js/iehacks.js');
+        }
+
+        // put iehacks.js after app.js
+        if ($this->rc->output->browser->ie) {
+            $args['content'] = preg_replace(
+                '|(<script src="' . preg_quote($p1, '|') . '/app(\.min)?\.js(\?s=[0-9]+)?" type="text/javascript"></script>)|',
+                '\\1<script src="' . $p2 . '/iehacks.js?s=' . $ts2 . '" type="text/javascript"></script>',
+                $args['content'], 1, $count);
+        }
+        else {
+            $count = 1;
+        }
+
+        // replace jQuery 2.x with 1.x
+        $args['content'] = preg_replace(
+            '|<script src="' . preg_quote($p1, '|') . '/jquery\.min\.js(\?s=[0-9]+)?" type="text/javascript"></script>|',
+            '<script src="' . $p2 . '/jquery.min.js?s=' . $ts1 . '" type="text/javascript"></script>'
+            // add iehacks.js if it is IE and it wasn't added yet
+            . ($count ? '' : "\n".'<script src="' . $p2 . '/iehacks.js?s=' . $ts2 . '" type="text/javascript"></script>'),
+            $args['content'], 1);
+
+        return $args;
+    }
+
+    function render_page($args)
+    {
+        if (!$this->rc->output->browser->ie) {
+            return $args;
+        }
+
+        $skin  = $this->skin();
+
+        if ($skin == 'classic') {
+            $minified = file_exists(INSTALL_PATH . '/plugins/legacy_browser/skins/classic/iehacks.min.css') ? '.min' : '';
+            $this->rc->output->add_header(
+                '<link rel="stylesheet" type="text/css" href="plugins/legacy_browser/skins/classic/iehacks' . $minified . '.css" />'
+            );
+        }
+        else if ($skin == 'larry') {
+            $minified = file_exists(INSTALL_PATH . '/plugins/legacy_browser/skins/larry/iehacks.min.css') ? '.min' : '';
+            $this->rc->output->add_header(
+                '<link rel="stylesheet" type="text/css" href="plugins/legacy_browser/skins/larry/iehacks' . $minified . '.css" />'
+            );
+
+            if ($this->rc->output->browser->ver < 8) {
+                $this->rc->output->add_header(
+                    '<link rel="stylesheet" type="text/css" href="plugins/legacy_browser/skins/larry/ie7hacks' . $minified . '.css" />'
+                );
+            }
+        }
+    }
+
+    private function skin()
+    {
+        $skin  = $this->rc->config->get('skin');
+
+        // external skin, find if it inherits from other skin
+        if ($skin != 'larry' && $skin != 'classic') {
+            $json = @file_get_contents(INSTALL_PATH . "/skins/$skin/meta.json");
+            $json = @json_decode($json, true);
+
+            if (!empty($json['extends'])) {
+                return $json['extends'];
+            }
+        }
+
+        return $skin;
+    }
+}