fixed not possible to change the text case of words like: 's, 're, 'll; and incorrect text case cycle order for regular words, when in the middle of a sentence

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

@@ -209,36 +209,27 @@ abstract public class CommandHandler extends TextEditingHandler {
 
 
 	protected boolean nextTextCase() {
-		if (!mInputMode.nextTextCase()) {
+		final String currentWord = suggestionOps.isEmpty() || mInputMode.getSequence().isEmpty() ? "" : suggestionOps.getCurrent();
+
+		if (!mInputMode.nextTextCase(currentWord)) {
 			return false;
 		}
 
 		mInputMode.skipNextTextCaseDetection();
+		settings.saveTextCase(mInputMode.getTextCase());
 
 		// if there are no suggestions or they are special chars, we don't need to adjust their text case
-		final String currentWord = suggestionOps.isEmpty() || mInputMode.getSequence().isEmpty() ? "" : suggestionOps.getCurrent();
-		if (currentWord.isEmpty() || !Character.isAlphabetic(currentWord.charAt(0))) {
-			settings.saveTextCase(mInputMode.getTextCase());
+		if (currentWord.isEmpty() || (currentWord.length() == 1 && !Character.isAlphabetic(currentWord.charAt(0)))) {
 			return true;
 		}
 
-		// When we are in AUTO mode and current dictionary word is in uppercase,
-		// the mode would switch to UPPERCASE, but visually, the word would not change.
-		// This is why we retry using the code below, until there is a visual change.
+		// if there are suggestions, we need to adjust their text case to acknowledge the change
 		int currentSuggestionIndex = suggestionOps.getCurrentIndex();
 		currentSuggestionIndex = suggestionOps.containsStem() ? currentSuggestionIndex - 1 : currentSuggestionIndex;
 
-		for (int retries = 0; retries <= 2; retries++) {
-			if (!currentWord.equals(mInputMode.getSuggestions().get(currentSuggestionIndex)) || !mInputMode.nextTextCase()) {
-				break;
-			}
-		}
-
 		suggestionOps.set(mInputMode.getSuggestions(), currentSuggestionIndex, mInputMode.containsGeneratedSuggestions());
 		textField.setComposingText(suggestionOps.getCurrent());
 
-		settings.saveTextCase(mInputMode.getTextCase());
-
 		return true;
 	}
 

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

@@ -206,7 +206,7 @@ abstract public class InputMode {
 	 * If "analyzeSurroundingText" is true, and when the mode supports text analyzing, it may apply
 	 * additional logic to determine the next valid text case.
 	 */
-	public boolean nextTextCase() {
+	public boolean nextTextCase(@Nullable String currentWord) {
 		if (!language.hasUpperCase()) {
 			return false;
 		}

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

@@ -30,7 +30,7 @@ public class ModeIdeograms extends ModeWords {
 
 	@Override protected String adjustSuggestionTextCase(String word, int newTextCase) { return word; }
 	@Override public void determineNextWordTextCase(int nextDigit) {}
-	@Override public boolean nextTextCase() { return false; }
+	@Override public boolean nextTextCase(@Nullable String currentWord) { return false; }
 
 
 	@Override

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

@@ -382,12 +382,18 @@ class ModeWords extends ModeCheonjiin {
 	}
 
 	@Override
-	public boolean nextTextCase() {
-		// convert any internally used text cases to user-friendly, because this is what the user
-		// is allowed to choose from.
+	public boolean nextTextCase(@Nullable String currentWord) {
+		if (currentWord == null || currentWord.isEmpty() || (currentWord.length() == 1 && !Character.isAlphabetic(currentWord.charAt(0)))) {
 			textCase = getTextCase();
+		} else {
+			textCase = new Text(language, currentWord).getTextCase();
+		}
 
-		boolean changed = super.nextTextCase();
+		// Skip capitalized text for words like: 've, 's, 'll, etc... only allow upper and lower cases.
+		boolean changed = super.nextTextCase(currentWord);
+		if (textCase != CASE_LOWER && textCase != CASE_UPPER && currentWord != null && currentWord.length() > 1 && !Character.isAlphabetic(currentWord.charAt(0))) {
+			changed = super.nextTextCase(currentWord);
+		}
 
 		// since it's a user's choice, the default matters no more
 		textFieldTextCase = changed ? CASE_UNDEFINED : textFieldTextCase;

app/src/main/java/io/github/sspanak/tt9/util/Text.java

@@ -36,7 +36,7 @@ public class Text extends TextTools {
 
 
 	public String capitalize() {
-		if (language == null || text == null || text.isEmpty() || !language.hasUpperCase()) {
+		if (language == null || text == null || text.isEmpty() || !language.hasUpperCase() || !Character.isAlphabetic(text.charAt(0))) {
 			return text;
 		}
 
@@ -141,12 +141,24 @@ public class Text extends TextTools {
 			return false;
 		}
 
-		if (!Character.isUpperCase(text.charAt(0))) {
-			return false;
+		char[] chars = text.toCharArray();
+		boolean firstLetterFound = false;
+
+		for (int i = 0, end = text.length(); i < end; i++) {
+			if (!Character.isAlphabetic(chars[i])) {
+				continue;
 			}
 
-		for (int i = 1, end = text.length(); i < end; i++) {
-			if (Character.isUpperCase(text.charAt(i))) {
+			if (!firstLetterFound) {
+				if (Character.isUpperCase(chars[i])) {
+					firstLetterFound = true;
+					continue;
+				} else {
+					return false;
+				}
+			}
+
+			if (Character.isUpperCase(chars[i])) {
 				return false;
 			}
 		}