Shift+Enter always sends newline, misc. fixes

app/src/main/java/eur/cfpifpsi/titanboard/TitanboardIME.java

@@ -33,11 +33,9 @@ import android.view.inputmethod.InputConnection;
 import java.util.ArrayList;
 
 // TODO: Revamp the keymap system — separate device keymap, keymap types (12-key, alphabetic, etc.)
-// TODO: Revamp meta keys, no need to separately track both alt and shift
 // TODO: Add auto-capitalization
 // TODO: Add auto-periods
 // TODO: Add auto-correct
-// TODO: Shift+Enter always inserts a newline
 // TODO: Emojis with popup window
 // TODO: Composing with diacritics, polytonic Greek as well
 // TODO: Add a new popup menu with per app settings, that is:
@@ -113,11 +111,12 @@ public class TitanboardIME extends InputMethodService {
         }
 
         // Workaround for default Android behaviour that pisses people off.
-        if (keyCode == KeyEvent.KEYCODE_DEL && (event.isAltPressed() || event.isShiftPressed())) {
+        if (keyCode == KeyEvent.KEYCODE_DEL && mMetaKeyManager.getAlt().isPressed()) {
             return true;
         }
 
-        if (keyCode == KeyEvent.KEYCODE_DEL || keyCode == KeyEvent.KEYCODE_ENTER) {
+        if (keyCode == KeyEvent.KEYCODE_DEL
+                || (keyCode == KeyEvent.KEYCODE_ENTER && !mMetaKeyManager.getShift().isPressed())) {
             mMetaKeyManager.adjustMetaStateAfterKeypress();
             mInputView.updateStateText();
             return false;
@@ -135,6 +134,14 @@ public class TitanboardIME extends InputMethodService {
             return false;
         }
 
+        // If shift is held down and enter is pressed, always insert a newline.
+        if (keyCode == KeyEvent.KEYCODE_ENTER && mMetaKeyManager.getShift().isPressed()) {
+            conn.commitText("\n", 1);
+            mMetaKeyManager.adjustMetaStateAfterKeypress();
+            mInputView.updateStateText();
+            return true;
+        }
+
         if (event.getRepeatCount() == 0 && !symbols.isEmpty()) {
             mMetaKeyManager.adjustMetaStateAfterKeypress();
             mInputView.updateStateText();
@@ -163,9 +170,11 @@ public class TitanboardIME extends InputMethodService {
                     mHandler.postDelayed(mSymbolAutoCycler, mPreferenceHolder.getCycleSpeed());
                 }
             }
+
+            return true;
         }
 
-        return true;
+        return false;
     }
 
     public boolean onKeyUp(int keyCode, KeyEvent event) {