Add a couple utility functions to renderer (retrieving messages and selected channel)

src/renderer/scr.savefile.js

@@ -39,6 +39,10 @@ SAVEFILE.prototype.getMessageCount = function(channel){
   return Object.keys(this.data[channel]).length || 0;
 };
 
+SAVEFILE.prototype.getAllMessages = function(){
+  return Array.prototype.concat.apply([], Object.values(this.data).map(messageList => Object.values(messageList)));
+};
+
 SAVEFILE.prototype.getMessages = function(channel){
   return this.data[channel] || [];
 };

src/renderer/scr.state.js

@@ -42,6 +42,14 @@ var STATE = (function(){
       });
     },
     
+    getSelectedChannel: function(){
+      return selectedChannel;
+    },
+    
+    getRawMessages: function(channel){
+      return channel ? Object.values(FILE.getMessages(channel)) : FILE.getAllMessages();
+    },
+    
     getMessageList: function(startIndex, count){
       if (!MSGS){
         return [];