replicant-packages_apps_Email/emailcommon/src/com/android/emailcommon/mail/FetchProfile.java

86 lines
3.1 KiB
Java

/*
* Copyright (C) 2008 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.emailcommon.mail;
import java.util.ArrayList;
/**
* <pre>
* A FetchProfile is a list of items that should be downloaded in bulk for a set of messages.
* FetchProfile can contain the following objects:
* FetchProfile.Item: Described below.
* Message: Indicates that the body of the entire message should be fetched.
* Synonymous with FetchProfile.Item.BODY.
* Part: Indicates that the given Part should be fetched. The provider
* is expected have previously created the given BodyPart and stored
* any information it needs to download the content.
* </pre>
*/
public class FetchProfile extends ArrayList<Fetchable> {
/**
* Default items available for pre-fetching. It should be expected that any
* item fetched by using these items could potentially include all of the
* previous items.
*/
public enum Item implements Fetchable {
/**
* Download the flags of the message.
*/
FLAGS,
/**
* Download the envelope of the message. This should include at minimum
* the size and the following headers: date, subject, from, content-type, to, cc
*/
ENVELOPE,
/**
* Download the structure of the message. This maps directly to IMAP's BODYSTRUCTURE
* and may map to other providers.
* The provider should, if possible, fill in a properly formatted MIME structure in
* the message without actually downloading any message data. If the provider is not
* capable of this operation it should specifically set the body of the message to null
* so that upper levels can detect that a full body download is needed.
*/
STRUCTURE,
/**
* A sane portion of the entire message, cut off at a provider determined limit.
* This should generaly be around 50kB.
*/
BODY_SANE,
/**
* The entire message.
*/
BODY,
}
/**
* @return the first {@link Part} in this collection, or null if it doesn't contain
* {@link Part}.
*/
public Part getFirstPart() {
for (Fetchable o : this) {
if (o instanceof Part) {
return (Part) o;
}
}
return null;
}
}