fixed suggestion bar flashing without debouncing hacks

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

@@ -131,7 +131,7 @@ public abstract class TypingHandler extends KeyPadHandler {
 		if (repeat == 0 && mInputMode.onBackspace()) {
 			getSuggestions(null);
 		} else {
-			suggestionOps.commitCurrent(false);
+			suggestionOps.commitCurrent(false, true);
 			mInputMode.reset();
 			deleteText(settings.getBackspaceAcceleration() && repeat > 0);
 		}
@@ -171,15 +171,18 @@ public abstract class TypingHandler extends KeyPadHandler {
 		// Automatically accept the previous word, when the next one is a space or punctuation,
 		// instead of requiring "OK" before that.
 		// First pass, analyze the incoming key press and decide whether it could be the start of
-		// a new word.
+		// a new word. In case we do accept it, we preserve the suggestion list instead of clearing,
+		// to prevent flashing while the next suggestions are being loaded.
 		else if (mInputMode.shouldAcceptPreviousSuggestion(key, hold)) {
-			String lastWord = suggestionOps.acceptIncomplete();
+			// WARNING! Ensure the code after "acceptIncompleteAndKeepList()" does not depend on
+			// the suggestions in SuggestionOps, since we don't clear that list.
+			String lastWord = suggestionOps.acceptIncompleteAndKeepList();
 			mInputMode.onAcceptSuggestion(lastWord);
 			autoCorrectSpace(lastWord, false, key);
 		}
 
 		// Auto-adjust the text case before each word, if the InputMode supports it.
-		if (suggestionOps.getCurrent().isEmpty()) {
+		if (mInputMode.getSuggestions().isEmpty()) {
 			mInputMode.determineNextWordTextCase();
 		}
 
@@ -188,7 +191,7 @@ public abstract class TypingHandler extends KeyPadHandler {
 			return false;
 		}
 
-		if (mInputMode.shouldSelectNextSuggestion() && !suggestionOps.isEmpty()) {
+		if (mInputMode.shouldSelectNextSuggestion() && !mInputMode.getSuggestions().isEmpty()) {
 			scrollSuggestions(false);
 			suggestionOps.scheduleDelayedAccept(mInputMode.getAutoAcceptTimeout());
 		} else {

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

@@ -97,7 +97,7 @@ public class SuggestionOps {
 	public String acceptCurrent() {
 		String word = getCurrent();
 		if (!word.isEmpty()) {
-			commitCurrent(true);
+			commitCurrent(true, true);
 		}
 
 		return word;
@@ -106,24 +106,30 @@ public class SuggestionOps {
 
 	public String acceptIncomplete() {
 		String currentWord = this.getCurrent();
-		commitCurrent(false);
+		commitCurrent(false, true);
 
 		return currentWord;
 	}
 
 
+	public String acceptIncompleteAndKeepList() {
+		commitCurrent(false, false);
+		return this.getCurrent();
+	}
+
+
 	public String acceptPrevious(Language language, int sequenceLength) {
 		if (sequenceLength <= 0) {
 			set(null);
 		}
 
 		String lastComposingText = getCurrent(language, sequenceLength - 1);
-		commitCurrent(false);
+		commitCurrent(false, true);
 		return lastComposingText;
 	}
 
 
-	public void commitCurrent(boolean entireSuggestion) {
+	public void commitCurrent(boolean entireSuggestion, boolean clearList) {
 		if (!isEmpty()) {
 			if (entireSuggestion) {
 				textField.setComposingText(getCurrent());
@@ -131,8 +137,11 @@ public class SuggestionOps {
 			textField.finishComposingText();
 		}
 
+
+		if (clearList) {
 			set(null);
 		}
+	}
 
 
 	public int getCurrentIndex() {

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

@@ -96,6 +96,7 @@ abstract public class InputMode {
 		onSuggestionsUpdated.run();
 	}
 
+	@NonNull
 	public ArrayList<String> getSuggestions() {
 		ArrayList<String> newSuggestions = new ArrayList<>();
 		for (String s : suggestions) {