From beefefd01627bd803c4717b344ee10a9df2bfca7 Mon Sep 17 00:00:00 2001
From: Simon Kornblith <simon@simonster.com>
Date: Thu, 25 Aug 2011 06:16:42 +0000
Subject: [PATCH] Add text-link binding (almost entirely verbatim from
 moz-central)

---
 chrome/content/zotero/bindings/text-link.xml | 129 +++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 chrome/content/zotero/bindings/text-link.xml
diff --git a/chrome/content/zotero/bindings/text-link.xml b/chrome/content/zotero/bindings/text-link.xml
new file mode 100644
index 000000000..904d8dda5
--- /dev/null
+++ b/chrome/content/zotero/bindings/text-link.xml
@@ -0,0 +1,129 @@
+<?xml version="1.0"?>
+<!-- ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Toolkit.
+ *
+ * The Initial Developer of the Original Code is
+ * the Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** -->
+<bindings id="textBindings"
+   xmlns="http://www.mozilla.org/xbl"
+   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+   xmlns:html="http://www.w3.org/1999/xhtml">
+   
+  <binding id="text-link" extends="chrome://global/content/bindings/text.xml#text-label">
+    <implementation implements="nsIAccessibleProvider">
+      <property name="accessibleType" readonly="true">
+        <getter>
+          <![CDATA[
+            return Components.interfaces.nsIAccessibleProvider.XULLink;
+          ]]>
+        </getter>
+      </property>
+      <property name="href" onget="return this.getAttribute('href');"
+                            onset="this.setAttribute('href', val); return val;" />
+      <method name="open">
+        <parameter name="aEvent"/>
+        <body>
+        <![CDATA[
+          var href = this.href;
+          if (!href || this.disabled || aEvent.getPreventDefault())
+            return;
+
+          var uri = null;
+          try {
+            const nsISSM = Components.interfaces.nsIScriptSecurityManager;
+            const secMan =
+                     Components.classes["@mozilla.org/scriptsecuritymanager;1"]
+                               .getService(nsISSM);
+
+            const ioService =
+                     Components.classes["@mozilla.org/network/io-service;1"]
+                               .getService(Components.interfaces.nsIIOService);
+
+            uri = ioService.newURI(href, null, null);
+
+            var nullPrincipal =
+              Components.classes["@mozilla.org/nullprincipal;1"]
+                        .createInstance(Components.interfaces.nsIPrincipal);
+            try {
+              secMan.checkLoadURIWithPrincipal(nullPrincipal, uri,
+                                               nsISSM.DISALLOW_INHERIT_PRINCIPAL)
+            }
+            catch (ex) {
+              var msg = "Error: Cannot open a " + uri.scheme + ": link using \
+                         the text-link binding.";
+              Components.utils.reportError(msg);
+              return;
+            }
+
+            const cID = "@mozilla.org/uriloader/external-protocol-service;1";
+            const nsIEPS = Components.interfaces.nsIExternalProtocolService;
+            var protocolSvc = Components.classes[cID].getService(nsIEPS);
+
+            // if the scheme is not an exposed protocol, then opening this link
+            // should be deferred to the system's external protocol handler
+            if (!protocolSvc.isExposedProtocol(uri.scheme)
+            	|| (window.Zotero && window.Zotero.isStandalone && ["http", "https"].indexOf(uri.scheme) !== -1)) {
+              protocolSvc.loadUrl(uri);
+              aEvent.preventDefault()
+              return;
+            }
+
+          }
+          catch (ex) {
+            Components.utils.reportError(ex);
+          }
+
+          // otherwise, fall back to opening the anchor directly
+          var win = window;
+          if (window instanceof Components.interfaces.nsIDOMChromeWindow) {
+            while (win.opener && !win.opener.closed)
+              win = win.opener;
+          }
+
+          if (uri)
+            win.open(uri.spec);
+          else
+            win.open(href);
+
+          aEvent.preventDefault();
+        ]]>
+        </body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="click" phase="capturing" button="0" action="this.open(event)"/>
+      <handler event="keypress" preventdefault="true" keycode="VK_ENTER"  action="this.click()" />
+      <handler event="keypress" preventdefault="true" keycode="VK_RETURN" action="this.click()" />
+    </handlers>
+  </binding>
+
+</bindings>
