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/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package github.daneren2005.dsub.view;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import java.util.ArrayList;
import java.util.List;
import java.util.WeakHashMap;
import github.daneren2005.dsub.R;
public class UpdateView extends LinearLayout {
private static final String TAG = UpdateView.class.getSimpleName();
private static final WeakHashMap<UpdateView, ?> INSTANCES = new WeakHashMap<UpdateView, Object>();
private static Handler backgroundHandler;
private static Handler uiHandler;
private static Runnable updateRunnable;
private static int activeActivities = 0;
protected Context context;
protected ImageButton starButton;
protected ImageView moreButton;
protected boolean exists = false;
protected boolean pinned = false;
protected boolean shaded = false;
protected boolean starred = false;
protected boolean isStarred = false;
public UpdateView(Context context) {
super(context);
this.context = context;
setLayoutParams(new AbsListView.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
INSTANCES.put(this, null);
startUpdater();
}
@Override
public void setPressed(boolean pressed) {
}
public void setObject(Object obj) {
setObjectImpl(obj);
updateBackground();
update();
}
public void setObject(Object obj1, Object obj2) {
setObjectImpl(obj1, obj2);
backgroundHandler.post(new Runnable() {
@Override
public void run() {
updateBackground();
uiHandler.post(new Runnable() {
@Override
public void run() {
update();
}
});
}
});
}
protected void setObjectImpl(Object obj) {
}
protected void setObjectImpl(Object obj1, Object obj2) {
}
private static synchronized void startUpdater() {
if(uiHandler != null) {
return;
}
uiHandler = new Handler();
// Needed so handler is never null until thread creates it
backgroundHandler = uiHandler;
updateRunnable = new Runnable() {
@Override
public void run() {
updateAll();
}
};
new Thread(new Runnable() {
public void run() {
Looper.prepare();
backgroundHandler = new Handler(Looper.myLooper());
uiHandler.post(updateRunnable);
Looper.loop();
}
}, "UpdateView").start();
}
private static void updateAll() {
try {
// If nothing can see this, stop updating
if(activeActivities == 0) {
activeActivities--;
return;
}
List<UpdateView> views = new ArrayList<UpdateView>();
for (UpdateView view : INSTANCES.keySet()) {
if (view.isShown()) {
views.add(view);
}
}
if(views.size() > 0) {
updateAllLive(views);
} else {
uiHandler.postDelayed(updateRunnable, 2000L);
}
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
}
private static void updateAllLive(final List<UpdateView> views) {
final Runnable runnable = new Runnable() {
@Override
public void run() {
try {
for(UpdateView view: views) {
view.update();
}
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
uiHandler.postDelayed(updateRunnable, 1000L);
}
};
backgroundHandler.post(new Runnable() {
@Override
public void run() {
try {
for(UpdateView view: views) {
view.updateBackground();
}
uiHandler.post(runnable);
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
}
});
}
public static void addActiveActivity() {
activeActivities++;
if(activeActivities == 0 && uiHandler != null && updateRunnable != null) {
activeActivities++;
uiHandler.post(updateRunnable);
}
}
public static void removeActiveActivity() {
activeActivities--;
}
protected void updateBackground() {
}
protected void update() {
if(moreButton != null) {
if(exists || pinned) {
if(!shaded) {
moreButton.setImageResource(exists ? R.drawable.download_cached : R.drawable.download_pinned);
shaded = true;
}
} else {
if(shaded) {
int[] attrs = new int[] {R.attr.download_none};
TypedArray typedArray = context.obtainStyledAttributes(attrs);
moreButton.setImageResource(typedArray.getResourceId(0, 0));
shaded = false;
}
}
}
if(starButton != null) {
if(isStarred) {
if(!starred) {
starButton.setVisibility(View.VISIBLE);
starred = true;
}
} else {
if(starred) {
starButton.setVisibility(View.GONE);
starred = false;
}
}
}
}
}
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