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/*
* Copyright (C) 2013 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.documentsui.model;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ProviderInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.graphics.drawable.Drawable;
import android.provider.DocumentsContract;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Xml;
import com.android.documentsui.DocumentsActivity;
import com.google.android.collect.Lists;
import libcore.io.IoUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.util.List;
/**
* Representation of a storage backend.
*/
public class DocumentsProviderInfo {
private static final String TAG = DocumentsActivity.TAG;
public ProviderInfo providerInfo;
public boolean customRoots;
public List<Icon> customIcons;
public static class Icon {
public String mimeType;
public Drawable icon;
}
private static final String TAG_DOCUMENTS_PROVIDER = "documents-provider";
private static final String TAG_ICON = "icon";
public static DocumentsProviderInfo buildRecents(Context context, ProviderInfo providerInfo) {
final DocumentsProviderInfo info = new DocumentsProviderInfo();
info.providerInfo = providerInfo;
info.customRoots = false;
return info;
}
public static DocumentsProviderInfo parseInfo(Context context, ProviderInfo providerInfo) {
final DocumentsProviderInfo info = new DocumentsProviderInfo();
info.providerInfo = providerInfo;
info.customIcons = Lists.newArrayList();
final PackageManager pm = context.getPackageManager();
final Resources res;
try {
res = pm.getResourcesForApplication(providerInfo.applicationInfo);
} catch (NameNotFoundException e) {
Log.w(TAG, "Failed to find resources for " + providerInfo, e);
return null;
}
XmlResourceParser parser = null;
try {
parser = providerInfo.loadXmlMetaData(
pm, DocumentsContract.META_DATA_DOCUMENT_PROVIDER);
AttributeSet attrs = Xml.asAttributeSet(parser);
int type = 0;
while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) {
final String tag = parser.getName();
if (type == XmlPullParser.START_TAG && TAG_DOCUMENTS_PROVIDER.equals(tag)) {
final TypedArray a = res.obtainAttributes(
attrs, com.android.internal.R.styleable.DocumentsProviderInfo);
info.customRoots = a.getBoolean(
com.android.internal.R.styleable.DocumentsProviderInfo_customRoots,
false);
a.recycle();
} else if (type == XmlPullParser.START_TAG && TAG_ICON.equals(tag)) {
final TypedArray a = res.obtainAttributes(
attrs, com.android.internal.R.styleable.Icon);
final Icon icon = new Icon();
icon.mimeType = a.getString(com.android.internal.R.styleable.Icon_mimeType);
icon.icon = a.getDrawable(com.android.internal.R.styleable.Icon_icon);
info.customIcons.add(icon);
a.recycle();
}
}
} catch (IOException e) {
Log.w(TAG, "Failed to parse metadata", e);
return null;
} catch (XmlPullParserException e) {
Log.w(TAG, "Failed to parse metadata", e);
return null;
} finally {
IoUtils.closeQuietly(parser);
}
return info;
}
}
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