M7350/base/core/java/android/webkit/CacheLoader.java

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2024-09-09 08:52:07 +00:00
/*
* Copyright (C) 2007 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 android.webkit;
import android.net.http.Headers;
import android.text.TextUtils;
/**
* This class is a concrete implementation of StreamLoader that uses a
* CacheResult as the source for the stream. The CacheResult stored mimetype
* and encoding is added to the HTTP response headers.
*/
class CacheLoader extends StreamLoader {
CacheManager.CacheResult mCacheResult; // Content source
/**
* Constructs a CacheLoader for use when loading content from the cache.
*
* @param loadListener LoadListener to pass the content to
* @param result CacheResult used as the source for the content.
*/
CacheLoader(LoadListener loadListener, CacheManager.CacheResult result) {
super(loadListener);
mCacheResult = result;
}
@Override
protected boolean setupStreamAndSendStatus() {
mDataStream = mCacheResult.inStream;
mContentLength = mCacheResult.contentLength;
mLoadListener.status(1, 1, mCacheResult.httpStatusCode, "OK");
return true;
}
@Override
protected void buildHeaders(Headers headers) {
StringBuilder sb = new StringBuilder(mCacheResult.mimeType);
if (!TextUtils.isEmpty(mCacheResult.encoding)) {
sb.append(';');
sb.append(mCacheResult.encoding);
}
headers.setContentType(sb.toString());
if (!TextUtils.isEmpty(mCacheResult.location)) {
headers.setLocation(mCacheResult.location);
}
if (!TextUtils.isEmpty(mCacheResult.expiresString)) {
headers.setExpires(mCacheResult.expiresString);
}
if (!TextUtils.isEmpty(mCacheResult.contentdisposition)) {
headers.setContentDisposition(mCacheResult.contentdisposition);
}
if (!TextUtils.isEmpty(mCacheResult.crossDomain)) {
headers.setXPermittedCrossDomainPolicies(mCacheResult.crossDomain);
}
}
}