fixed text flashing when recomposing

app/src/main/java/io/github/sspanak/tt9/ime/TypingHandler.java

@@ -134,10 +134,12 @@ public abstract class TypingHandler extends KeyPadHandler {
 			textField.deleteChars(prevChars);
 		}
 
-		if (!hold && suggestionOps.isEmpty() && mInputMode.recompose(textField.getWordBeforeCursor())) {
+		if (settings.getBackspaceRecomposing() && !hold && suggestionOps.isEmpty()) {
-			textField.deleteChars(mInputMode.getSequenceLength());
+			String previousWord = textField.getWordBeforeCursor();
+			if (textField.recompose(previousWord) && mInputMode.recompose(previousWord)) {
 				getSuggestions();
 			}
+		}
 
 		return true;
 	}

app/src/main/java/io/github/sspanak/tt9/ime/helpers/TextField.java

@@ -187,6 +187,23 @@ public class TextField extends InputField {
 	}
 
 
+	/**
+	 * Erases the previous N characters and sets the given "text" as composing text. N is the length of
+	 * the given "text". Returns "true" if the operation was successful, "false" otherwise.
+	 */
+	public boolean recompose(String text) {
+		if (connection == null || !isComposingSupported) {
+			return false;
+		}
+
+		connection.beginBatchEdit();
+		boolean success = connection.deleteSurroundingText(text.length(), 0) && connection.setComposingText(text, 1);
+		connection.endBatchEdit();
+
+		return success;
+	}
+
+
 	/**
 	 * setText
 	 * A fail-safe setter that appends text to the field, ignoring NULL input.

app/src/main/java/io/github/sspanak/tt9/ime/modes/ModePredictive.java

@@ -126,7 +126,7 @@ public class ModePredictive extends InputMode {
 
 	@Override
 	public boolean recompose(String word) {
-		if (!settings.getBackspaceRecomposing() || word == null || word.length() < 2 || word.contains(" ")) {
+		if (word == null || word.length() < 2 || word.contains(" ")) {
 			Logger.d(LOG_TAG, "Not recomposing invalid word: '" + word + "'");
 			textCase = CASE_CAPITALIZE;
 			return false;