Enhance AutoText to support user-defined correction pairs (7b1fc89e) · Commits · e / os / android_frameworks_base

core/java/android/text/AutoText.java

+67 −10

Original line number	Diff line number	Diff line
		@@ -25,10 +25,14 @@ import android.view.View;

		import org.xmlpull.v1.XmlPullParser;
		import org.xmlpull.v1.XmlPullParserException;
		import org.xmlpull.v1.XmlPullParserFactory;

		import java.io.IOException;
		import java.util.Locale;

		import java.io.FileInputStream;
		import java.io.BufferedInputStream;

		/**
		* This class accesses a dictionary of corrections to frequent misspellings.
		*/
		@@ -55,9 +59,13 @@ public class AutoText {

		private static final int RIGHT = 9300; // Size of 'right' 13 Aug 2007

		private static AutoText sInstance = new AutoText(Resources.getSystem());
		private static AutoText sInstance = new AutoText(Resources.getSystem(), false);
		private static Object sLock = new Object();

		private static AutoText sUserInstance = new AutoText(null, true);

		private static final String TAG = "AutoText";

		// TODO:
		//
		// Note the assumption that the destination strings total less than
		@@ -72,10 +80,13 @@ public class AutoText {
		private String mText;
		private Locale mLocale;
		private int mSize;
		private boolean initialized;

		private AutoText(Resources resources) {
		private AutoText(Resources resources, boolean isUserInstance) {
		if (!isUserInstance) {
		mLocale = resources.getConfiguration().locale;
		init(resources);
		}
		initialized = init(resources, isUserInstance);
		}

		/**
		@@ -93,7 +104,7 @@ public class AutoText {
		instance = sInstance;

		if (!locale.equals(instance.mLocale)) {
		instance = new AutoText(res);
		instance = new AutoText(res, false);
		sInstance = instance;
		}
		}
		@@ -108,7 +119,15 @@ public class AutoText {
		*/
		public static String get(CharSequence src, final int start, final int end,
		View view) {
		String userCorrection = null;
		if (sUserInstance.initialized) {
		userCorrection = sUserInstance.lookup(src, start, end);
		}
		if (userCorrection == null) {
		return getInstance(view).lookup(src, start, end);
		} else {
		return userCorrection;
		}
		}

		/**
		@@ -129,6 +148,15 @@ public class AutoText {
		return mSize;
		}

		/**
		* Refreshes the list of user-defined corrections in the file
		* /data/local/user_autotext.xml .
		* @hide
		*/
		public static void refreshUserCorrections() {
		sUserInstance = new AutoText(null, true);
		}

		private String lookup(CharSequence src, final int start, final int end) {
		int here = mTrie[TRIE_ROOT];

		@@ -158,8 +186,25 @@ public class AutoText {
		return null;
		}

		private void init(Resources r) {
		XmlResourceParser parser = r.getXml(com.android.internal.R.xml.autotext);
		private boolean init(Resources r, boolean isUserInstance) {
		XmlPullParser parser = null;
		BufferedInputStream bufStream = null;
		FileInputStream fStream = null;

		if (isUserInstance) {
		try {
		parser = XmlPullParserFactory.newInstance().newPullParser();
		fStream = new FileInputStream("/data/local/user_autotext.xml");
		bufStream = new BufferedInputStream(fStream);
		parser.setInput(bufStream, null);
		} catch (IOException e) {
		return false;
		} catch (XmlPullParserException e) {
		return false;
		}
		} else {
		parser = r.getXml(com.android.internal.R.xml.autotext);
		}

		StringBuilder right = new StringBuilder(RIGHT);
		mTrie = new char[DEFAULT];
		@@ -197,16 +242,28 @@ public class AutoText {
		}

		// Don't let Resources cache a copy of all these strings.
		if (r != null) {
		r.flushLayoutCache();
		}
		} catch (XmlPullParserException e) {
		throw new RuntimeException(e);
		} catch (IOException e) {
		throw new RuntimeException(e);
		} finally {
		parser.close();
		if (isUserInstance) {
		try {
		fStream.close();
		bufStream.close();
		} catch (IOException e) {
		throw new RuntimeException(e);
		}
		} else {
		((XmlResourceParser)parser).close();
		}
		}

		mText = right.toString();
		return true;
		}

		private void add(String src, char off) {