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/*
* 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.print;
/**
* This class represents a print job from the perspective of
* an application.
*/
public final class PrintJob {
private final int mId;
private final PrintManager mPrintManager;
private PrintJobInfo mCachedInfo;
PrintJob(PrintJobInfo info, PrintManager printManager) {
mCachedInfo = info;
mPrintManager = printManager;
mId = info.getId();
}
/**
* Gets the unique print job id.
*
* @return The id.
*/
public int getId() {
return mId;
}
/**
* Gets the {@link PrintJobInfo} that describes this job.
* <p>
* <strong>Node:</strong>The returned info object is a snapshot of the
* current print job state. Every call to this method returns a fresh
* info object that reflects the current print job state.
* </p>
*
* @return The print job info.
*/
public PrintJobInfo getInfo() {
if (isInImmutableState()) {
return mCachedInfo;
}
PrintJobInfo info = mPrintManager.getPrintJobInfo(mId);
if (info != null) {
mCachedInfo = info;
}
return mCachedInfo;
}
/**
* Cancels this print job.
*/
public void cancel() {
if (!isInImmutableState()) {
mPrintManager.cancelPrintJob(mId);
}
}
private boolean isInImmutableState() {
final int state = mCachedInfo.getState();
return state == PrintJobInfo.STATE_COMPLETED
|| state == PrintJobInfo.STATE_CANCELED;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
PrintJob other = (PrintJob) obj;
return mId == other.mId;
}
@Override
public int hashCode() {
return mId;
}
}
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