/*
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* Copyright (C) 2018 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.settings.print;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.os.UserManager;
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import android.print.PrintJob;
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import android.print.PrintJobId;
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import android.print.PrintJobInfo;
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import android.print.PrintManager;
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import android.printservice.PrintServiceInfo;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import com.android.settings.R;
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import com.android.settings.core.BasePreferenceController;
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import com.android.settingslib.RestrictedPreference;
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import com.android.settingslib.core.lifecycle.LifecycleObserver;
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import com.android.settingslib.core.lifecycle.events.OnStart;
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import com.android.settingslib.core.lifecycle.events.OnStop;
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import java.util.List;
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/**
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* {@link BasePreferenceController} for Print settings.
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*/
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public class PrintSettingPreferenceController extends BasePreferenceController implements
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LifecycleObserver, OnStart, OnStop, PrintManager.PrintJobStateChangeListener {
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private static final String KEY_PRINTING_SETTINGS = "connected_device_printing";
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private final PackageManager mPackageManager;
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private final PrintManager mPrintManager;
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private Preference mPreference;
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public PrintSettingPreferenceController(Context context) {
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super(context, KEY_PRINTING_SETTINGS);
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mPackageManager = context.getPackageManager();
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mPrintManager = ((PrintManager) context.getSystemService(Context.PRINT_SERVICE))
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.getGlobalPrintManagerForUser(context.getUserId());
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}
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@Override
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public int getAvailabilityStatus() {
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return mPackageManager.hasSystemFeature(PackageManager.FEATURE_PRINTING)
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? AVAILABLE : UNSUPPORTED_ON_DEVICE;
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mPreference = screen.findPreference(getPreferenceKey());
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}
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@Override
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public void onStart() {
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mPrintManager.addPrintJobStateChangeListener(this);
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}
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@Override
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public void onStop() {
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mPrintManager.removePrintJobStateChangeListener(this);
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}
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@Override
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public void onPrintJobStateChanged(PrintJobId printJobId) {
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updateState(mPreference);
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}
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@Override
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public void updateState(Preference preference) {
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super.updateState(preference);
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((RestrictedPreference) preference).checkRestrictionAndSetDisabled(
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UserManager.DISALLOW_PRINTING);
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}
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@Override
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public CharSequence getSummary() {
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final List<PrintJob> printJobs = mPrintManager.getPrintJobs();
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int numActivePrintJobs = 0;
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if (printJobs != null) {
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for (PrintJob job : printJobs) {
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if (shouldShowToUser(job.getInfo())) {
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numActivePrintJobs++;
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}
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}
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}
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if (numActivePrintJobs > 0) {
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return mContext.getResources().getQuantityString(
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R.plurals.print_jobs_summary, numActivePrintJobs, numActivePrintJobs);
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} else {
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final List<PrintServiceInfo> services =
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mPrintManager.getPrintServices(PrintManager.ENABLED_SERVICES);
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if (services == null || services.isEmpty()) {
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return mContext.getText(R.string.print_settings_summary_no_service);
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} else {
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final int count = services.size();
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return mContext.getResources().getQuantityString(
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R.plurals.print_settings_summary, count, count);
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}
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}
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}
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/**
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* Should the print job the shown to the user in the settings app.
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*
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* @param printJob The print job in question.
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* @return true iff the print job should be shown.
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*/
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static boolean shouldShowToUser(PrintJobInfo printJob) {
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switch (printJob.getState()) {
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case PrintJobInfo.STATE_QUEUED:
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case PrintJobInfo.STATE_STARTED:
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case PrintJobInfo.STATE_BLOCKED:
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case PrintJobInfo.STATE_FAILED: {
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return true;
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}
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}
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return false;
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}
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}
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