100 lines
3.1 KiB
Java
100 lines
3.1 KiB
Java
/*
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* Copyright (C) 2013 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 android.printservice;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.os.ParcelFileDescriptor;
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import android.os.RemoteException;
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import android.print.PrintDocumentInfo;
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import android.print.PrintJobId;
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import android.util.Log;
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import java.io.IOException;
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/**
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* This class represents a printed document from the perspective of a print
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* service. It exposes APIs to query the document and obtain its data.
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* <p>
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* <strong>Note: </strong> All methods of this class must be executed on the
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* main application thread.
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* </p>
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*/
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public final class PrintDocument {
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private static final String LOG_TAG = "PrintDocument";
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private final PrintJobId mPrintJobId;
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private final IPrintServiceClient mPrintServiceClient;
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private final PrintDocumentInfo mInfo;
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PrintDocument(PrintJobId printJobId, IPrintServiceClient printServiceClient,
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PrintDocumentInfo info) {
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mPrintJobId = printJobId;
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mPrintServiceClient = printServiceClient;
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mInfo = info;
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}
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/**
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* Gets the {@link PrintDocumentInfo} that describes this document.
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*
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* @return The document info.
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*/
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public @NonNull PrintDocumentInfo getInfo() {
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PrintService.throwIfNotCalledOnMainThread();
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return mInfo;
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}
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/**
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* Gets the data associated with this document.
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* <p>
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* <strong>Note: </strong> It is a responsibility of the client to open a
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* stream to the returned file descriptor, fully read the data, and close
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* the file descriptor.
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* </p>
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*
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* @return A file descriptor for reading the data.
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*/
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public @Nullable ParcelFileDescriptor getData() {
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PrintService.throwIfNotCalledOnMainThread();
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ParcelFileDescriptor source = null;
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ParcelFileDescriptor sink = null;
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try {
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ParcelFileDescriptor[] fds = ParcelFileDescriptor.createPipe();
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source = fds[0];
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sink = fds[1];
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mPrintServiceClient.writePrintJobData(sink, mPrintJobId);
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return source;
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} catch (IOException ioe) {
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Log.e(LOG_TAG, "Error calling getting print job data!", ioe);
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} catch (RemoteException re) {
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Log.e(LOG_TAG, "Error calling getting print job data!", re);
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} finally {
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if (sink != null) {
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try {
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sink.close();
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} catch (IOException ioe) {
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/* ignore */
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}
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}
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}
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return null;
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}
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}
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