Merge change 8593 (9d575063) · Commits · e / os / android_frameworks_base

core/java/android/text/method/ArrowKeyMovementMethod.java

+81 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import android.graphics.Rect;
		import android.text.*;
		import android.widget.TextView;
		import android.view.View;
		import android.view.ViewConfiguration;
		import android.view.MotionEvent;

		// XXX this doesn't extend MetaKeyKeyListener because the signatures
		@@ -256,8 +257,32 @@ implements MovementMethod
		(MetaKeyKeyListener.getMetaState(buffer,
		MetaKeyKeyListener.META_SELECTING) != 0);

		DoubleTapState[] tap = buffer.getSpans(0, buffer.length(),
		DoubleTapState.class);
		boolean doubletap = false;

		if (tap.length > 0) {
		if (event.getEventTime() - tap[0].mWhen <=
		ViewConfiguration.getDoubleTapTimeout()) {
		if (sameWord(buffer, off, Selection.getSelectionEnd(buffer))) {
		doubletap = true;
		}
		}

		tap[0].mWhen = event.getEventTime();
		} else {
		DoubleTapState newtap = new DoubleTapState();
		newtap.mWhen = event.getEventTime();
		buffer.setSpan(newtap, 0, buffer.length(),
		Spannable.SPAN_INCLUSIVE_INCLUSIVE);
		}

		if (cap) {
		Selection.extendSelection(buffer, off);
		} else if (doubletap) {
		Selection.setSelection(buffer,
		findWordStart(buffer, off),
		findWordEnd(buffer, off));
		} else {
		Selection.setSelection(buffer, off);
		}
		@@ -272,6 +297,62 @@ implements MovementMethod
		return handled;
		}

		private static class DoubleTapState implements NoCopySpan {
		long mWhen;
		}

		private static boolean sameWord(CharSequence text, int one, int two) {
		int start = findWordStart(text, one);
		int end = findWordEnd(text, one);

		if (end == start) {
		return false;
		}

		return start == findWordStart(text, two) &&
		end == findWordEnd(text, two);
		}

		// TODO: Unify with TextView.getWordForDictionary()
		private static int findWordStart(CharSequence text, int start) {
		for (; start > 0; start--) {
		char c = text.charAt(start - 1);
		int type = Character.getType(c);

		if (c != '\'' &&
		type != Character.UPPERCASE_LETTER &&
		type != Character.LOWERCASE_LETTER &&
		type != Character.TITLECASE_LETTER &&
		type != Character.MODIFIER_LETTER &&
		type != Character.DECIMAL_DIGIT_NUMBER) {
		break;
		}
		}

		return start;
		}

		// TODO: Unify with TextView.getWordForDictionary()
		private static int findWordEnd(CharSequence text, int end) {
		int len = text.length();

		for (; end < len; end++) {
		char c = text.charAt(end);
		int type = Character.getType(c);

		if (c != '\'' &&
		type != Character.UPPERCASE_LETTER &&
		type != Character.LOWERCASE_LETTER &&
		type != Character.TITLECASE_LETTER &&
		type != Character.MODIFIER_LETTER &&
		type != Character.DECIMAL_DIGIT_NUMBER) {
		break;
		}
		}

		return end;
		}

		public boolean canSelectArbitrarily() {
		return true;
		}