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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher2;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.pm.ComponentInfo;
import android.content.pm.ResolveInfo;
import android.graphics.Bitmap;
/**
* Simple cache mechanism for PagedView outlines.
*/
public class PagedViewIconCache {
public static class Key {
public enum Type {
ApplicationInfoKey,
AppWidgetProviderInfoKey,
ResolveInfoKey
}
private final ComponentName mComponentName;
private final Type mType;
public Key(ApplicationInfo info) {
mComponentName = info.componentName;
mType = Type.ApplicationInfoKey;
}
public Key(ResolveInfo info) {
final ComponentInfo ci = info.activityInfo != null ? info.activityInfo :
info.serviceInfo;
mComponentName = new ComponentName(ci.packageName, ci.name);
mType = Type.ResolveInfoKey;
}
public Key(AppWidgetProviderInfo info) {
mComponentName = info.provider;
mType = Type.AppWidgetProviderInfoKey;
}
private ComponentName getComponentName() {
return mComponentName;
}
public boolean isKeyType(Type t) {
return (mType == t);
}
@Override
public boolean equals(Object o) {
if (o instanceof Key) {
Key k = (Key) o;
return mComponentName.equals(k.mComponentName);
}
return super.equals(o);
}
@Override
public int hashCode() {
return getComponentName().hashCode();
}
}
private final HashMap<Key, Bitmap> mIconOutlineCache = new HashMap<Key, Bitmap>();
public void clear() {
for (Key key : mIconOutlineCache.keySet()) {
mIconOutlineCache.get(key).recycle();
}
mIconOutlineCache.clear();
}
private void retainAll(HashSet<Key> keysToKeep, Key.Type t) {
HashSet<Key> keysToRemove = new HashSet<Key>(mIconOutlineCache.keySet());
keysToRemove.removeAll(keysToKeep);
for (Key key : keysToRemove) {
if (key.isKeyType(t)) {
mIconOutlineCache.get(key).recycle();
mIconOutlineCache.remove(key);
}
}
}
/** Removes all the keys to applications that aren't in the passed in collection */
public void retainAllApps(ArrayList<ApplicationInfo> keys) {
HashSet<Key> keysSet = new HashSet<Key>();
for (ApplicationInfo info : keys) {
keysSet.add(new Key(info));
}
retainAll(keysSet, Key.Type.ApplicationInfoKey);
}
/** Removes all the keys to shortcuts that aren't in the passed in collection */
public void retainAllShortcuts(List<ResolveInfo> keys) {
HashSet<Key> keysSet = new HashSet<Key>();
for (ResolveInfo info : keys) {
keysSet.add(new Key(info));
}
retainAll(keysSet, Key.Type.ResolveInfoKey);
}
/** Removes all the keys to widgets that aren't in the passed in collection */
public void retainAllAppWidgets(List<AppWidgetProviderInfo> keys) {
HashSet<Key> keysSet = new HashSet<Key>();
for (AppWidgetProviderInfo info : keys) {
keysSet.add(new Key(info));
}
retainAll(keysSet, Key.Type.AppWidgetProviderInfoKey);
}
public void addOutline(Key key, Bitmap b) {
mIconOutlineCache.put(key, b);
}
public void removeOutline(Key key) {
if (mIconOutlineCache.containsKey(key)) {
mIconOutlineCache.get(key).recycle();
mIconOutlineCache.remove(key);
}
}
public Bitmap getOutline(Key key) {
return mIconOutlineCache.get(key);
}
}
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