Bug 1239748 - add a user-facing preference to turn off the on-screen keyboard functionality completely, r=jaws

--HG--
extra : commitid : 2k70EZR9a3L
extra : rebase_source : e2970230dae4f0eb01d7b96f7e5fa2dda7ab5564

browser/components/preferences/in-content/advanced.js

@@ -47,6 +47,7 @@ var gAdvancedPane = {
 #ifdef MOZ_SERVICES_HEALTHREPORT
     this.initSubmitHealthReport();
 #endif
+    this.updateOnScreenKeyboardVisibility();
     this.updateCacheSizeInputField();
     this.updateActualCacheSize();
     this.updateActualAppCacheSize();
@@ -124,6 +125,10 @@ var gAdvancedPane = {
    * - when set to true, typing outside text areas and input boxes will
    *   automatically start searching for what's typed within the current
    *   document; when set to false, no search action happens
+   * ui.osk.enabled
+   * - when set to true, subject to other conditions, we may sometimes invoke
+   *   an on-screen keyboard when a text input is focused.
+   *   (Currently Windows-only, and depending on prefs, may be Windows-8-only)
    * general.autoScroll
    * - when set to true, clicking the scroll wheel on the mouse activates a
    *   mouse mode where moving the mouse down scrolls the document downward with
@@ -312,6 +317,15 @@ var gAdvancedPane = {
   },
 #endif
 
+  updateOnScreenKeyboardVisibility() {
+    if (AppConstants.platform == "win") {
+      let minVersion = Services.prefs.getBoolPref("ui.osk.require_win10") ? 10 : 6.2;
+      if (Services.vc.compare(Services.sysinfo.getProperty("version"), minVersion) >= 0) {
+        document.getElementById("useOnScreenKeyboard").hidden = false;
+      }
+    }
+  },
+
   // NETWORK TAB
 
   /*

browser/components/preferences/in-content/advanced.xul

@@ -22,6 +22,11 @@
   <preference id="accessibility.blockautorefresh"
               name="accessibility.blockautorefresh"
               type="bool"/>
+#ifdef XP_WIN
+  <preference id="ui.osk.enabled"
+              name="ui.osk.enabled"
+              type="bool"/>
+#endif
 
   <preference id="general.autoScroll"
               name="general.autoScroll"
@@ -147,6 +152,13 @@
       <groupbox id="accessibilityGroup" align="start">
         <caption><label>&accessibility.label;</label></caption>
 
+#ifdef XP_WIN
+        <checkbox id="useOnScreenKeyboard"
+                  hidden="true"
+                  label="&useOnScreenKeyboard.label;"
+                  accesskey="&useOnScreenKeyboard.accesskey;"
+                  preference="ui.osk.enabled"/>
+#endif
         <checkbox id="useCursorNavigation"
                   label="&useCursorNavigation.label;"
                   accesskey="&useCursorNavigation.accesskey;"

browser/components/preferences/in-content/preferences.js

@@ -11,6 +11,7 @@ var Cr = Components.results;
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/AppConstants.jsm");
 
 var gLastHash = "";
 

browser/locales/en-US/chrome/browser/preferences/advanced.dtd

@@ -14,6 +14,8 @@
 <!ENTITY searchStartTyping.accesskey     "x">
 <!ENTITY blockAutoRefresh.label          "Warn me when websites try to redirect or reload the page">
 <!ENTITY blockAutoRefresh.accesskey      "b">
+<!ENTITY useOnScreenKeyboard.label       "Show a touch keyboard when necessary">
+<!ENTITY useOnScreenKeyboard.accesskey   "k">
 
 <!ENTITY browsing.label                  "Browsing">