Bug 596427 - [Feedback] : The add URL of last visited page does not auto fill the last visited page [r=mbrubeck]

mobile/app/profile/extensions/feedback@mobile.mozilla.org/content/overlay.js

@@ -40,6 +40,9 @@ var Feedback = {
     let appInfo = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo);
     document.getElementById("feedback-about").setAttribute("desc", appInfo.version);
 
+    // A simple frame script to fill in the referrer page
+    messageManager.loadFrameScript("data:,addMessageListener('Feedback:InitPage', function(m) { content.document.getElementById('id_url').value = m.json.referrer; });", true);
+
     // Try to delay the widget initialization during startup
     messageManager.addMessageListener("DOMContentLoaded", function() {
       // We only want to delay one time
@@ -50,6 +53,17 @@ var Feedback = {
     });
   },
 
+  openFeedback: function(aURL) {
+    let currentURL = Browser.selectedBrowser.currentURI.spec;
+    let newTab = BrowserUI.newTab(aURL);
+
+    // Tell the feedback page to fill in the referrer URL
+    newTab.browser.messageManager.addMessageListener("DOMContentLoaded", function() {
+      newTab.browser.messageManager.removeMessageListener("DOMContentLoaded", arguments.callee, true);
+      newTab.browser.messageManager.sendAsyncMessage("Feedback:InitPage", { referrer: currentURL });
+    });
+  },
+
   openReadme: function() {
     let formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
     let url = formatter.formatURLPref("app.releaseNotesURL");

mobile/app/profile/extensions/feedback@mobile.mozilla.org/content/overlay.xul

@@ -60,8 +60,8 @@
         <richlistbox id="feedback-list" flex="1" onselect="this.ensureSelectedElementIsVisible()">
           <settings id="feedback-communicate" label="&feedback.communicate.title;">
             <setting title="&feedback.feedback.title;" type="control">
-              <button id="feedback-feedback-happy" class="button-dark" oncommand="BrowserUI.newTab('http://m.input.mozilla.com/en-US/happy');"/>
-              <button id="feedback-feedback-sad" class="button-dark" oncommand="BrowserUI.newTab('http://m.input.mozilla.com/en-US/sad');"/>
+              <button id="feedback-feedback-happy" class="button-dark" oncommand="Feedback.openFeedback('http://m.input.mozilla.com/en-US/happy');"/>
+              <button id="feedback-feedback-sad" class="button-dark" oncommand="Feedback.openFeedback('http://m.input.mozilla.com/en-US/sad');"/>
             </setting>
           </settings>
           <settings id="feedback-information" label="&feedback.information.title;">