Bug 777805 - Update error message for unsupported plugins to include "Learn More..." link. r=mbrubeck

mobile/android/chrome/content/browser.js

@@ -2161,6 +2161,7 @@ Tab.prototype = {
     this.browser.addEventListener("scroll", this, true);
     this.browser.addEventListener("MozScrolledAreaChanged", this, true);
     this.browser.addEventListener("PluginClickToPlay", this, true);
+    this.browser.addEventListener("PluginNotFound", this, true);
     this.browser.addEventListener("pageshow", this, true);
 
     Services.obs.addObserver(this, "before-first-paint", false);
@@ -2253,6 +2254,7 @@ Tab.prototype = {
     this.browser.removeEventListener("DOMWillOpenModalDialog", this, true);
     this.browser.removeEventListener("scroll", this, true);
     this.browser.removeEventListener("PluginClickToPlay", this, true);
+    this.browser.removeEventListener("PluginNotFound", this, true);
     this.browser.removeEventListener("MozScrolledAreaChanged", this, true);
 
     Services.obs.removeObserver(this, "before-first-paint");
@@ -2801,6 +2803,21 @@ Tab.prototype = {
         break;
       }
 
+      case "PluginNotFound": {
+        let plugin = aEvent.target;
+        plugin.clientTop; // force style flush
+
+        // On devices where we don't support Flash, there will be a "Learn More..." link in
+        // the missing plugin error message.
+        let learnMoreLink = plugin.ownerDocument.getAnonymousElementByAttribute(plugin, "class", "unsupportedLearnMoreLink");
+        if (learnMoreLink) {
+          let learnMoreUrl = Services.urlFormatter.formatURLPref("app.support.baseURL");
+          learnMoreUrl += "why-cant-firefox-mobile-play-flash-on-my-device";
+          learnMoreLink.href = learnMoreUrl;
+        }
+        break;
+      }
+
       case "pageshow": {
         // only send pageshow for the top-level document
         if (aEvent.originalTarget.defaultView != this.browser.contentWindow)

toolkit/locales/en-US/chrome/mozapps/plugins/plugins.dtd

@@ -20,9 +20,16 @@
 <!ENTITY pluginWizard.finalPage.moreInfo.label               "Find out more about Plugins or manually find missing plugins.">
 <!ENTITY pluginWizard.finalPage.restart.label                "&brandShortName; needs to be restarted for the plugin(s) to work.">
 
+<!-- LOCALIZATION NOTE (unsupportedPlatform.pre): Mobile only. Flash (the only plugin available on mobile)
+     is not supported on some devices. Include a trailing space as needed. -->
+<!ENTITY unsupportedPlatform.pre                             "We're very sorry, but &brandShortName; can't play Flash on this device. ">
+<!-- LOCALIZATION NOTE (unsupportedPlatform.learnMore): Mobile only. This text is used to link to a SUMO page explaining why Flash is not
+     supported on this device. Use the unicode ellipsis char, \u2026, or use "..." if \u2026 doesn't suit traditions in your locale. -->
+<!ENTITY unsupportedPlatform.learnMore                       "Learn More…">
+<!-- LOCALIZATION NOTE (unsupportedPlatform.post): Mobile only. Include text here if needed for your locale. -->
+<!ENTITY unsupportedPlatform.post                            "">
+
 <!ENTITY missingPlugin                                       "A plugin is needed to display this content.">
-<!-- LOCALIZATION NOTE (unsupportedPlatform): Mobile only. Plugins are not supported on some mobile devices. -->
-<!ENTITY unsupportedPlatform                                 "Plugins are not supported on this device.">
 <!-- LOCALIZATION NOTE (tapToPlayPlugin): Mobile (used for touch interfaces) only has one type of plugin possible. -->
 <!ENTITY tapToPlayPlugin                                     "Tap here to activate plugin.">
 <!ENTITY clickToPlayPlugin                                   "Click here to activate plugin.">

toolkit/mozapps/plugins/content/pluginProblem.xml

@@ -5,8 +5,10 @@
 <!DOCTYPE bindings [
   <!ENTITY % pluginsDTD SYSTEM "chrome://mozapps/locale/plugins/plugins.dtd">
   <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
+  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
   %pluginsDTD;
   %globalDTD;
+  %brandDTD;
 ]>
 
 <bindings id="pluginBindings"
@@ -24,7 +26,7 @@
             <xul:spacer flex="1"/>
             <xul:box class="icon"/>
             <html:div class="msg msgUnsupported">&missingPlugin;</html:div>
-            <html:div class="msg msgUnsupportedPlatform">&unsupportedPlatform;</html:div>
+            <html:div class="msg msgUnsupportedPlatform">&unsupportedPlatform.pre;<html:a class="unsupportedLearnMoreLink" href="" target="_blank">&unsupportedPlatform.learnMore;</html:a>&unsupportedPlatform.post;</html:div>
             <html:div class="msg msgTapToPlay">&tapToPlayPlugin;</html:div>
             <html:div class="msg msgClickToPlay">&clickToPlayPlugin;</html:div>
             <html:div class="msg msgVulnerableUpdatable">&clickToPlayPluginVulnerableUpdateAvailable;</html:div>