am 5f2efe0f: Merge "[PB12] Implement the progress bar update lifecycle" (27c91662) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/dictionarypack/DictionaryDownloadProgressBar.java

+90 −0

Original line number	Diff line number	Diff line
		@@ -16,11 +16,24 @@

		package com.android.inputmethod.dictionarypack;

		import android.content.ContentValues;
		import android.content.Context;
		import android.database.sqlite.SQLiteDatabase;
		import android.util.AttributeSet;
		import android.util.Log;
		import android.view.View;
		import android.widget.ProgressBar;

		public class DictionaryDownloadProgressBar extends ProgressBar {
		@SuppressWarnings("unused")
		private static final String TAG = DictionaryDownloadProgressBar.class.getSimpleName();
		private static final int NOT_A_DOWNLOADMANAGER_PENDING_ID = 0;

		private String mClientId;
		private String mWordlistId;
		private boolean mIsCurrentlyAttachedToWindow = false;
		private Thread mReporterThread = null;

		public DictionaryDownloadProgressBar(final Context context) {
		super(context);
		}
		@@ -28,4 +41,81 @@ public class DictionaryDownloadProgressBar extends ProgressBar {
		public DictionaryDownloadProgressBar(final Context context, final AttributeSet attrs) {
		super(context, attrs);
		}

		public void setIds(final String clientId, final String wordlistId) {
		mClientId = clientId;
		mWordlistId = wordlistId;
		}

		static private int getDownloadManagerPendingIdFromWordlistId(final Context context,
		final String clientId, final String wordlistId) {
		final SQLiteDatabase db = MetadataDbHelper.getDb(context, clientId);
		final ContentValues wordlistValues =
		MetadataDbHelper.getContentValuesOfLatestAvailableWordlistById(db, wordlistId);
		if (null == wordlistValues) {
		// We don't know anything about a word list with this id. Bug? This should never
		// happen, but still return to prevent a crash.
		Log.e(TAG, "Unexpected word list ID: " + wordlistId);
		return NOT_A_DOWNLOADMANAGER_PENDING_ID;
		}
		return wordlistValues.getAsInteger(MetadataDbHelper.PENDINGID_COLUMN);
		}

		/*
		* This method will stop any running updater thread for this progress bar and create and run
		* a new one only if the progress bar is visible.
		* Hence, as a result of calling this method, the progress bar will have an updater thread
		* running if and only if the progress bar is visible.
		*/
		private void updateReporterThreadRunningStatusAccordingToVisibility() {
		if (null != mReporterThread) mReporterThread.interrupt();
		if (mIsCurrentlyAttachedToWindow && View.VISIBLE == getVisibility()) {
		final int downloadManagerPendingId =
		getDownloadManagerPendingIdFromWordlistId(getContext(), mClientId, mWordlistId);
		if (NOT_A_DOWNLOADMANAGER_PENDING_ID == downloadManagerPendingId) {
		// Can't get the ID. This is never supposed to happen, but still clear the updater
		// thread and return to avoid a crash.
		mReporterThread = null;
		return;
		}
		final UpdaterThread updaterThread = new UpdaterThread(downloadManagerPendingId);
		updaterThread.start();
		mReporterThread = updaterThread;
		} else {
		// We're not going to restart the thread anyway, so we may as well garbage collect it.
		mReporterThread = null;
		}
		}

		@Override
		protected void onAttachedToWindow() {
		mIsCurrentlyAttachedToWindow = true;
		updateReporterThreadRunningStatusAccordingToVisibility();
		}

		@Override
		protected void onDetachedFromWindow() {
		mIsCurrentlyAttachedToWindow = false;
		updateReporterThreadRunningStatusAccordingToVisibility();
		}

		private static class UpdaterThread extends Thread {
		private final static int REPORT_PERIOD = 1000; // how often to report progress
		final int mId;
		public UpdaterThread(final int id) {
		super();
		mId = id;
		}
		@Override
		public void run() {
		try {
		// TODO: implement the actual query and reporting
		while (!isInterrupted()) {
		Thread.sleep(REPORT_PERIOD);
		}
		} catch (InterruptedException e) {
		// Do nothing and terminate normally.
		}
		}
		}
		}

java/src/com/android/inputmethod/dictionarypack/WordListPreference.java

+3 −3

Original line number	Diff line number	Diff line
		@@ -24,7 +24,6 @@ import android.view.View;
		import android.view.ViewGroup;
		import android.view.ViewParent;
		import android.widget.ListView;
		import android.widget.ProgressBar;
		import android.widget.TextView;

		import com.android.inputmethod.latin.R;
		@@ -195,9 +194,10 @@ public final class WordListPreference extends Preference {
		super.onBindView(view);
		((ViewGroup)view).setLayoutTransition(null);

		final ProgressBar progressBar =
		(ProgressBar)view.findViewById(R.id.dictionary_line_progress_bar);
		final DictionaryDownloadProgressBar progressBar =
		(DictionaryDownloadProgressBar)view.findViewById(R.id.dictionary_line_progress_bar);
		final TextView status = (TextView)view.findViewById(android.R.id.summary);
		progressBar.setIds(mClientId, mWordlistId);
		progressBar.setMax(mFilesize);
		final boolean showProgressBar = (MetadataDbHelper.STATUS_DOWNLOADING == mStatus);
		status.setVisibility(showProgressBar ? View.INVISIBLE : View.VISIBLE);