Show previous and next message in list.

src/graphics/Screen.cpp

@@ -291,8 +291,12 @@ static void drawCannedMessageFrame(OLEDDisplay *display, OLEDDisplayUiState *sta
     displayedNodeNum = 0; // Not currently showing a node pane
 
     display->setTextAlignment(TEXT_ALIGN_LEFT);
+    display->setFont(FONT_SMALL);
+    display->drawString(0 + x, 0 + y, cannedMessagePlugin->getPrevMessage());
     display->setFont(FONT_MEDIUM);
-    display->drawString(0 + x, 0 + y, cannedMessagePlugin->getCurrentSelection());
+    display->drawString(0 + x, 0 + y + 8, cannedMessagePlugin->getCurrentMessage());
+    display->setFont(FONT_SMALL);
+    display->drawString(0 + x, 0 + y + 24, cannedMessagePlugin->getNextMessage());
 
     // the max length of this buffer is much longer than we can possibly print
 //    static char tempBuf[96];

src/plugins/CannedMessagePlugin.cpp

@@ -70,7 +70,7 @@ int32_t CannedMessagePlugin::runOnce()
     {
         this->currentMessageIndex = 0;
         DEBUG_MSG("First touch. Current message:%s\n",
-            this->getCurrentSelection());
+            this->getCurrentMessage());
     }
     else if (this->action == ACTION_PRESSED)
     {
@@ -81,41 +81,23 @@ int32_t CannedMessagePlugin::runOnce()
     }
     else if (this->action == ACTION_UP)
     {
-        if (this->currentMessageIndex <= 0)
+        this->currentMessageIndex = getPrevIndex();
-        {
-            this->currentMessageIndex =
-             sizeof(cannedMessagePluginMessages) / CANNED_MESSAGE_PLUGIN_MESSAGE_MAX_LEN - 1;
-        }
-        else
-        {
-            this->currentMessageIndex -= 1;
-        }
         DEBUG_MSG("MOVE UP. Current message:%s\n",
-            this->getCurrentSelection());
+            this->getCurrentMessage());
     }
     else if (this->action == ACTION_DOWN)
     {
-        if (this->currentMessageIndex >=
+        this->currentMessageIndex = this->getNextIndex();
-            (sizeof(cannedMessagePluginMessages) / CANNED_MESSAGE_PLUGIN_MESSAGE_MAX_LEN) - 1)
-        {
-            this->currentMessageIndex = 0;
-        }
-        else
-        {
-            this->currentMessageIndex += 1;
-        }
         DEBUG_MSG("MOVE DOWN. Current message:%s\n",
-            this->getCurrentSelection());
+            this->getCurrentMessage());
     }
     if (this->action != ACTION_NONE)
     {
         this->action = ACTION_NONE;
         this->notifyObservers(NULL);
     }
-    DEBUG_MSG("Current selection index:%d\n",
-        this->currentMessageIndex);
 
-    return 3000;
+    return 30000;
 }
 
 void CannedMessagePlugin::select()

src/plugins/CannedMessagePlugin.h

@@ -45,10 +45,18 @@ class CannedMessagePlugin :
     void select();
     void directionA();
     void directionB();
-    String getCurrentSelection()
+    String getCurrentMessage()
     {
         return cannedMessagePluginMessages[this->currentMessageIndex];
     }
+    String getPrevMessage()
+    {
+        return cannedMessagePluginMessages[this->getPrevIndex()];
+    }
+    String getNextMessage()
+    {
+        return cannedMessagePluginMessages[this->getNextIndex()];
+    }
     bool shouldDraw()
     {
         return currentMessageIndex != -1;
@@ -58,13 +66,37 @@ class CannedMessagePlugin :
 
     virtual int32_t runOnce();  
 
-    MeshPacket *preparePacket();
-
     void sendText(
         NodeNum dest,
         const char* message,
         bool wantReplies);
 
+    int getNextIndex()
+    {
+        if (this->currentMessageIndex >=
+            (sizeof(cannedMessagePluginMessages) / CANNED_MESSAGE_PLUGIN_MESSAGE_MAX_LEN) - 1)
+        {
+            return 0;
+        }
+        else
+        {
+            return this->currentMessageIndex + 1;
+        }
+    }
+
+    int getPrevIndex()
+    {
+        if (this->currentMessageIndex <= 0)
+        {
+            return
+             sizeof(cannedMessagePluginMessages) / CANNED_MESSAGE_PLUGIN_MESSAGE_MAX_LEN - 1;
+        }
+        else
+        {
+            return this->currentMessageIndex - 1;
+        }
+    }
+
     // TODO: make this configurable
     volatile cannedMessagePluginActionType cwRotationMeaning = ACTION_UP;