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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;
import com.android.documentsui.model.DocumentInfo;
import com.android.internal.util.Predicate;
public class MimePredicate implements Predicate<DocumentInfo> {
private final String[] mFilters;
/**
* MIME types that are visual in nature. For example, they should always be
* shown as thumbnails in list mode.
*/
public static final String[] VISUAL_MIMES = new String[] { "image/*", "video/*" };
public MimePredicate(String[] filters) {
mFilters = filters;
}
@Override
public boolean apply(DocumentInfo doc) {
if (doc.isDirectory()) {
return true;
}
if (mimeMatches(mFilters, doc.mimeType)) {
return true;
}
return false;
}
public static boolean mimeMatches(String[] filters, String[] tests) {
if (tests == null) {
return false;
}
for (String test : tests) {
if (mimeMatches(filters, test)) {
return true;
}
}
return false;
}
public static boolean mimeMatches(String filter, String[] tests) {
if (tests == null) {
return true;
}
for (String test : tests) {
if (mimeMatches(filter, test)) {
return true;
}
}
return false;
}
public static boolean mimeMatches(String[] filters, String test) {
if (filters == null) {
return true;
}
for (String filter : filters) {
if (mimeMatches(filter, test)) {
return true;
}
}
return false;
}
public static boolean mimeMatches(String filter, String test) {
if (test == null) {
return false;
} else if (filter == null || "*/*".equals(filter)) {
return true;
} else if (filter.equals(test)) {
return true;
} else if (filter.endsWith("/*")) {
return filter.regionMatches(0, test, 0, filter.indexOf('/'));
} else {
return false;
}
}
}
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