Initial checkin of AOSP Messaging app.
b/23110861 Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1
This commit is contained in:
Mike Dodd
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.messaging.datamodel.data;
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import android.net.Uri;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.support.annotation.NonNull;
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import com.android.messaging.util.Assert;
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import com.android.messaging.util.ContentType;
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import com.android.messaging.util.LogUtil;
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import com.android.messaging.util.SafeAsyncTask;
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import com.android.messaging.util.UriUtil;
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/**
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* Represents a "pending" message part that acts as a placeholder for the actual attachment being
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* loaded. It handles the task to load and persist the attachment from a Uri to local scratch
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* folder. This item is not persisted to the database.
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*/
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public class PendingAttachmentData extends MessagePartData {
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/** The pending state. This is the initial state where we haven't started loading yet */
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public static final int STATE_PENDING = 0;
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/** The state for when we are currently loading the attachment to the scratch space */
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public static final int STATE_LOADING = 1;
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/** The attachment has been successfully loaded and no longer pending */
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public static final int STATE_LOADED = 2;
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/** The attachment failed to load */
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public static final int STATE_FAILED = 3;
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private static final int LOAD_MEDIA_TIME_LIMIT_MILLIS = 60 * 1000; // 60s
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/** The current state of the pending attachment. Refer to the STATE_* states above */
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private int mCurrentState;
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/**
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* Create a new instance of PendingAttachmentData with an output Uri.
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* @param sourceUri the source Uri of the attachment. The Uri maybe temporary or remote,
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* so we need to persist it to local storage.
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*/
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protected PendingAttachmentData(final String caption, final String contentType,
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@NonNull final Uri sourceUri, final int width, final int height,
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final boolean onlySingleAttachment) {
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super(caption, contentType, sourceUri, width, height, onlySingleAttachment);
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mCurrentState = STATE_PENDING;
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}
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/**
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* Creates a pending attachment data that is able to load from the given source uri and
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* persist the media resource locally in the scratch folder.
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*/
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public static PendingAttachmentData createPendingAttachmentData(final String contentType,
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final Uri sourceUri) {
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return createPendingAttachmentData(null, contentType, sourceUri, UNSPECIFIED_SIZE,
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UNSPECIFIED_SIZE);
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}
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public static PendingAttachmentData createPendingAttachmentData(final String caption,
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final String contentType, final Uri sourceUri, final int width, final int height) {
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Assert.isTrue(ContentType.isMediaType(contentType));
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return new PendingAttachmentData(caption, contentType, sourceUri, width, height,
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false /*onlySingleAttachment*/);
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}
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public static PendingAttachmentData createPendingAttachmentData(final String caption,
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final String contentType, final Uri sourceUri, final int width, final int height,
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final boolean onlySingleAttachment) {
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Assert.isTrue(ContentType.isMediaType(contentType));
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return new PendingAttachmentData(caption, contentType, sourceUri, width, height,
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onlySingleAttachment);
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}
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public int getCurrentState() {
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return mCurrentState;
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}
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public void loadAttachmentForDraft(final DraftMessageData draftMessageData,
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final String bindingId) {
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if (mCurrentState != STATE_PENDING) {
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return;
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}
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mCurrentState = STATE_LOADING;
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// Kick off a SafeAsyncTask to load the content of the media and persist it locally.
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// Note: we need to persist the media locally even if it's not remote, because we
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// want to be able to resend the media in case the message failed to send.
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new SafeAsyncTask<Void, Void, MessagePartData>(LOAD_MEDIA_TIME_LIMIT_MILLIS,
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true /* cancelExecutionOnTimeout */) {
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@Override
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protected MessagePartData doInBackgroundTimed(final Void... params) {
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final Uri contentUri = getContentUri();
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final Uri persistedUri = UriUtil.persistContentToScratchSpace(contentUri);
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if (persistedUri != null) {
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return MessagePartData.createMediaMessagePart(
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getText(),
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getContentType(),
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persistedUri,
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getWidth(),
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getHeight());
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}
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return null;
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}
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@Override
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protected void onCancelled() {
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LogUtil.w(LogUtil.BUGLE_TAG, "Timeout while retrieving media");
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mCurrentState = STATE_FAILED;
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if (draftMessageData.isBound(bindingId)) {
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draftMessageData.removePendingAttachment(PendingAttachmentData.this);
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}
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}
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@Override
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protected void onPostExecute(final MessagePartData attachment) {
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if (attachment != null) {
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mCurrentState = STATE_LOADED;
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if (draftMessageData.isBound(bindingId)) {
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draftMessageData.updatePendingAttachment(attachment,
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PendingAttachmentData.this);
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} else {
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// The draft message data is no longer bound, drop the loaded attachment.
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attachment.destroyAsync();
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}
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} else {
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// Media load failed. We already logged in doInBackground() so don't need to
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// do that again.
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mCurrentState = STATE_FAILED;
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if (draftMessageData.isBound(bindingId)) {
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draftMessageData.onPendingAttachmentLoadFailed(PendingAttachmentData.this);
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draftMessageData.removePendingAttachment(PendingAttachmentData.this);
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}
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}
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}
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}.executeOnThreadPool();
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}
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protected PendingAttachmentData(final Parcel in) {
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super(in);
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mCurrentState = in.readInt();
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}
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@Override
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public void writeToParcel(final Parcel out, final int flags) {
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super.writeToParcel(out, flags);
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out.writeInt(mCurrentState);
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}
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public static final Parcelable.Creator<PendingAttachmentData> CREATOR
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= new Parcelable.Creator<PendingAttachmentData>() {
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@Override
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public PendingAttachmentData createFromParcel(final Parcel in) {
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return new PendingAttachmentData(in);
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}
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@Override
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public PendingAttachmentData[] newArray(final int size) {
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return new PendingAttachmentData[size];
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}
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};
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}
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