Merge "Have TalkBack announce results and formula changes" into mnc-dev (a8f47d36) · Commits · e / os / android_packages_apps_ExactCalculator

src/com/android/calculator2/Calculator.java

+11 −3

Original line number	Diff line number	Diff line
		@@ -444,13 +444,13 @@ public class Calculator extends Activity
		// Add the given button id to input expression.
		// If appropriate, clear the expression before doing so.
		private void addKeyToExpr(int id) {
		// FIXME: Other states?
		if (mCurrentState == CalculatorState.ERROR) {
		setState(CalculatorState.INPUT);
		} else if (mCurrentState == CalculatorState.RESULT) {
		if (KeyMaps.isBinary(id) \|\| KeyMaps.isSuffix(id)) {
		mEvaluator.collapse();
		} else {
		announceClearForAccessibility();
		mEvaluator.clear();
		}
		setState(CalculatorState.INPUT);
		@@ -544,9 +544,9 @@ public class Calculator extends Activity
		formatted.setSpan(new ForegroundColorSpan(Color.RED),
		formula.length(), formatted.length(),
		Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
		mFormulaText.setText(formatted);
		mFormulaText.changeTextTo(formatted);
		} else {
		mFormulaText.setText(formula);
		mFormulaText.changeTextTo(formula);
		}
		}

		@@ -711,11 +711,16 @@ public class Calculator extends Activity
		animatorSet.start();
		}

		private void announceClearForAccessibility() {
		mResultText.announceForAccessibility(getResources().getString(R.string.desc_clr));
		}

		private void onClear() {
		if (mEvaluator.getExpr().isEmpty()) {
		return;
		}
		cancelIfEvaluating(true);
		announceClearForAccessibility();
		reveal(mCurrentButton, R.color.calculator_accent_color, new AnimatorListenerAdapter() {
		@Override
		public void onAnimationEnd(Animator animation) {
		@@ -732,6 +737,7 @@ public class Calculator extends Activity
		void onError(final int errorResourceId) {
		if (mCurrentState == CalculatorState.EVALUATE) {
		setState(CalculatorState.ANIMATE);
		mResultText.announceForAccessibility(getResources().getString(errorResourceId));
		reveal(mCurrentButton, R.color.calculator_error_color,
		new AnimatorListenerAdapter() {
		@Override
		@@ -783,6 +789,8 @@ public class Calculator extends Activity
		final int formulaTextColor = mFormulaText.getCurrentTextColor();

		if (animate) {
		mResultText.announceForAccessibility(getResources().getString(R.string.desc_eq));
		mResultText.announceForAccessibility(mResultText.getText());
		setState(CalculatorState.ANIMATE);
		final AnimatorSet animatorSet = new AnimatorSet();
		animatorSet.playTogether(

src/com/android/calculator2/CalculatorText.java

+33 −0

Original line number	Diff line number	Diff line
		@@ -204,6 +204,39 @@ public class CalculatorText extends AlignedTextView implements View.OnLongClickL
		return lastFitTextSize;
		}

		private static boolean startsWith(CharSequence whole, CharSequence prefix) {
		int wholeLen = whole.length();
		int prefixLen = prefix.length();
		if (prefixLen > wholeLen) {
		return false;
		}
		for (int i = 0; i < prefixLen; ++i) {
		if (prefix.charAt(i) != whole.charAt(i)) {
		return false;
		}
		}
		return true;
		}

		/**
		* Functionally equivalent to setText(), but explicitly announce changes.
		* If the new text is an extension of the old one, announce the addition.
		* Otherwise, e.g. after deletion, announce the entire new text.
		*/
		public void changeTextTo(CharSequence newText) {
		CharSequence oldText = getText();
		if (startsWith(newText, oldText)) {
		int newLen = newText.length();
		int oldLen = oldText.length();
		if (oldLen != newLen) {
		announceForAccessibility(newText.subSequence(oldLen, newLen));
		}
		} else {
		announceForAccessibility(newText);
		}
		setText(newText);
		}

		public boolean stopActionMode() {
		if (mActionMode != null) {
		mActionMode.finish();