From a7da44a01a575246c9fb55665c15ce9a9a400814 Mon Sep 17 00:00:00 2001
From: Einar Egilsson
Date: Mon, 21 May 2007 23:21:52 +0000
Subject: Redirector

git-svn-id: http://einaregilsson.googlecode.com/svn/mozilla/redirector/trunk@54 119bf307-c92d-0410-89bd-8f53e6181181
---
 chrome/content/redirector.js              | 46 +++++++++++++++++++++++++++----
 chrome/content/redirlib.js                |  4 +++
 chrome/locale/en-US/redirector.properties |  4 ++-
 defaults/preferences/redirector.js        |  1 +
 4 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/chrome/content/redirector.js b/chrome/content/redirector.js
index 6767840..732602b 100644
--- a/chrome/content/redirector.js
+++ b/chrome/content/redirector.js
@@ -17,6 +17,9 @@ var Redirector = {
 
             $('contentAreaContextMenu')
                 .addEventListener("popupshowing", function(e) { Redirector.showContextMenu(e); }, false);
+
+            this.redirects = eval(RedirLib.getCharPref('redirects'));
+
             var appcontent = window.document.getElementById('appcontent');
 
             if (appcontent && !appcontent.processed) {
@@ -44,17 +47,48 @@ var Redirector = {
     },
 
     onDOMContentLoaded : function(event) {
-        var redirect;
-        try {
+        var redirect, link, links, url;
+
+        url = window.content.location.href;
+
+        RedirLib.debug('Processing url %1'._(url));
+
         for each (redirect in this.redirects) {
-            if (RedirectorCommon.wildcardMatch(redirect.pattern, window.content.location.href)) {
-                window.content.location.href = redirect.redirectUrl;
+            if (RedirectorCommon.wildcardMatch(redirect.pattern, url)) {
+                RedirLib.debug('%1 matches %2'._(redirect.pattern, url));
+
+                if (redirect.onlyIfLinkExists) {
+
+                    links = window.content.document.getElementsByTagName('a');
+
+                    for each(link in links) {
+
+                        if (link.href && link.href.toString() == redirect.redirectUrl) {
+                            RedirLib.debug('Found a link for %1'._(redirect.redirectUrl));
+                            this.goto(redirect);
+                            return;
+                        }
+                    }
+
+                    RedirLib.debug('Did not find a link for %1'._(redirect.redirectUrl));
+
+                } else {
+                    this.goto(redirect);
+                }
             }
         }
-        } catch(e) {alert(e);}
 
     },
 
+    goto : function(redirect) {
+
+        if (redirect.redirectUrl == window.content.location.href) {
+            RedirLib.msgBox(this.strings.getString('extensionName'), this.strings.getFormattedString('recursiveError', [redirect.pattern, redirect.redirectUrl]));
+        } else {
+            window.content.location.href = redirect.redirectUrl;
+        }
+    },
+
     onUnload : function(event) {
         //Clean up here
         RedirLib.debug("Finished cleanup");
@@ -82,6 +116,8 @@ var Redirector = {
         if (params.out.pattern) {
             this.redirects.push(params.out);
         }
+
+        RedirLib.setCharPref('redirects', this.redirects.toSource());
     },
 
     onMenuItemCommand: function(event) {
diff --git a/chrome/content/redirlib.js b/chrome/content/redirlib.js
index 493c583..71856dd 100644
--- a/chrome/content/redirlib.js
+++ b/chrome/content/redirlib.js
@@ -66,6 +66,10 @@ var RedirLib = {
         return this._prefBranch.getCharPref(branch);
     },
 
+    setCharPref : function(branch, value) {
+        return this._prefBranch.setCharPref(branch, value);
+    },
+
     getBoolPref : function(branch) {
         return this._prefBranch.getBoolPref(branch);
     },
diff --git a/chrome/locale/en-US/redirector.properties b/chrome/locale/en-US/redirector.properties
index 110f82c..5d01a1f 100644
--- a/chrome/locale/en-US/redirector.properties
+++ b/chrome/locale/en-US/redirector.properties
@@ -1,4 +1,6 @@
 initError=Failed to initialize %1.
 extensions.redirector@einaregilsson.com.description=Automatically redirects to user-defined urls on certain pages
+extensionName=Redirector
 addCurrentUrl=Add current url to Redirector
-addLinkUrl=Add link url to Redirector
\ No newline at end of file
+addLinkUrl=Add link url to Redirector
+recursiveError=A redirect with the pattern %S matches %S and is trying to redirect to it again. You should change this rule so it won't work recursively.
\ No newline at end of file
diff --git a/defaults/preferences/redirector.js b/defaults/preferences/redirector.js
index d7985a9..7b108aa 100644
--- a/defaults/preferences/redirector.js
+++ b/defaults/preferences/redirector.js
@@ -1,6 +1,7 @@
 //// $Id$
 
 pref("extensions.redirector.debug", false);
+pref("extensions.redirector.redirects", '[]');
 
 // See http://kb.mozillazine.org/Localize_extension_descriptions
 pref("extensions.redirector@einaregilsson.com.description", "chrome://redirector/locale/redirector.properties");
\ No newline at end of file
-- 
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