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