Bug 1132925 - Pass messages to the parent process to set reader mode prefs. r=margaret

browser/modules/ReaderParent.jsm

@@ -28,6 +28,8 @@ let ReaderParent = {
     "Reader:Share",
     "Reader:SystemUIVisibility",
     "Reader:UpdateReaderButton",
+    "Reader:SetIntPref",
+    "Reader:SetCharPref",
   ],
 
   init: function() {
@@ -80,6 +82,18 @@ let ReaderParent = {
         this.updateReaderButton(browser);
         break;
       }
+      case "Reader:SetIntPref": {
+        if (message.data && message.data.name !== undefined) {
+          Services.prefs.setIntPref(message.data.name, message.data.value);
+        }
+        break;
+      }
+      case "Reader:SetCharPref": {
+        if (message.data && message.data.name !== undefined) {
+          Services.prefs.setCharPref(message.data.name, message.data.value);
+        }
+        break;
+      }
     }
   },
 

toolkit/components/reader/AboutReader.jsm

@@ -301,7 +301,10 @@ AboutReader.prototype = {
     this._fontSize = newFontSize;
     htmlClasses.add("font-size" + this._fontSize);
 
-    Services.prefs.setIntPref("reader.font_size", this._fontSize);
+    this._mm.sendAsyncMessage("Reader:SetIntPref", {
+      name: "reader.font_size",
+      value: this._fontSize
+    });
   },
 
   _handleDeviceLight: function Reader_handleDeviceLight(newLux) {
@@ -392,7 +395,10 @@ AboutReader.prototype = {
     this._enableAmbientLighting(colorSchemePref === "auto");
     this._setColorScheme(colorSchemePref);
 
-    Services.prefs.setCharPref("reader.color_scheme", colorSchemePref);
+    this._mm.sendAsyncMessage("Reader:SetCharPref", {
+      name: "reader.color_scheme",
+      value: colorSchemePref
+    });
   },
 
   _setFontType: function Reader_setFontType(newFontType) {
@@ -407,7 +413,10 @@ AboutReader.prototype = {
     this._fontType = newFontType;
     bodyClasses.add(this._fontType);
 
-    Services.prefs.setCharPref("reader.font_type", this._fontType);
+    this._mm.sendAsyncMessage("Reader:SetCharPref", {
+      name: "reader.font_type",
+      value: this._fontType
+    });
   },
 
   _getToolbarVisibility: function Reader_getToolbarVisibility() {