151 lines
2.7 KiB
Java
151 lines
2.7 KiB
Java
package org.moire.ultrasonic.view;
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import android.content.Context;
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import android.os.Handler;
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import android.os.Looper;
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import timber.log.Timber;
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import android.view.ViewGroup;
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import android.widget.AbsListView;
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import android.widget.LinearLayout;
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import org.moire.ultrasonic.util.Util;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.WeakHashMap;
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public class UpdateView extends LinearLayout
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{
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private static final WeakHashMap<UpdateView, ?> INSTANCES = new WeakHashMap<UpdateView, Object>();
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private static Handler backgroundHandler;
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private static Handler uiHandler;
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private static Runnable updateRunnable;
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private static Context context;
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public UpdateView(Context context)
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{
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super(context);
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UpdateView.context = context;
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setLayoutParams(new AbsListView.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
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INSTANCES.put(this, null);
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startUpdater();
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}
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@Override
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public void setPressed(boolean pressed)
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{
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}
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private static synchronized void startUpdater()
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{
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if (uiHandler != null)
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{
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return;
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}
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uiHandler = new Handler();
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updateRunnable = new Runnable()
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{
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@Override
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public void run()
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{
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updateAll();
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}
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};
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new Thread(new Runnable()
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{
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@Override
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public void run()
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{
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Thread.currentThread().setName("startUpdater");
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Looper.prepare();
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backgroundHandler = new Handler(Looper.myLooper());
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uiHandler.post(updateRunnable);
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Looper.loop();
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}
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}).start();
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}
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private static void updateAll()
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{
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try
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{
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Collection<UpdateView> views = new ArrayList<UpdateView>();
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for (UpdateView view : INSTANCES.keySet())
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{
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if (view.isShown())
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{
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views.add(view);
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}
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}
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updateAllLive(views);
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}
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catch (Throwable x)
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{
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Timber.w(x, "Error when updating song views.");
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}
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}
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private static void updateAllLive(final Iterable<UpdateView> views)
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{
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final Runnable runnable = new Runnable()
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{
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@Override
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public void run()
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{
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try
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{
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for (UpdateView view : views)
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{
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view.update();
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}
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}
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catch (Throwable x)
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{
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Timber.w(x, "Error when updating song views.");
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}
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uiHandler.postDelayed(updateRunnable, Util.getViewRefreshInterval(context));
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}
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};
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backgroundHandler.post(new Runnable()
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{
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@Override
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public void run()
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{
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try
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{
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Thread.currentThread().setName("updateAllLive-Background");
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for (UpdateView view : views)
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{
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view.updateBackground();
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}
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uiHandler.post(runnable);
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}
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catch (Throwable x)
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{
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Timber.w(x, "Error when updating song views.");
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}
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}
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});
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}
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protected void updateBackground()
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{
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}
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protected void update()
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{
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}
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}
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