1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (C) 2018 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 com.android.settings.print;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.UserManager;
import android.print.PrintJob;
import android.print.PrintJobId;
import android.print.PrintJobInfo;
import android.print.PrintManager;
import android.printservice.PrintServiceInfo;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.RestrictedPreference;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
import java.util.List;
/**
* {@link BasePreferenceController} for Print settings.
*/
public class PrintSettingPreferenceController extends BasePreferenceController implements
LifecycleObserver, OnStart, OnStop, PrintManager.PrintJobStateChangeListener {
private static final String KEY_PRINTING_SETTINGS = "connected_device_printing";
private final PackageManager mPackageManager;
private final PrintManager mPrintManager;
private Preference mPreference;
public PrintSettingPreferenceController(Context context) {
super(context, KEY_PRINTING_SETTINGS);
mPackageManager = context.getPackageManager();
mPrintManager = ((PrintManager) context.getSystemService(Context.PRINT_SERVICE))
.getGlobalPrintManagerForUser(context.getUserId());
}
@Override
public int getAvailabilityStatus() {
return mPackageManager.hasSystemFeature(PackageManager.FEATURE_PRINTING)
? AVAILABLE : UNSUPPORTED_ON_DEVICE;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public void onStart() {
mPrintManager.addPrintJobStateChangeListener(this);
}
@Override
public void onStop() {
mPrintManager.removePrintJobStateChangeListener(this);
}
@Override
public void onPrintJobStateChanged(PrintJobId printJobId) {
updateState(mPreference);
}
@Override
public void updateState(Preference preference) {
super.updateState(preference);
((RestrictedPreference) preference).checkRestrictionAndSetDisabled(
UserManager.DISALLOW_PRINTING);
}
@Override
public CharSequence getSummary() {
final List<PrintJob> printJobs = mPrintManager.getPrintJobs();
int numActivePrintJobs = 0;
if (printJobs != null) {
for (PrintJob job : printJobs) {
if (shouldShowToUser(job.getInfo())) {
numActivePrintJobs++;
}
}
}
if (numActivePrintJobs > 0) {
return mContext.getResources().getQuantityString(
R.plurals.print_jobs_summary, numActivePrintJobs, numActivePrintJobs);
} else {
final List<PrintServiceInfo> services =
mPrintManager.getPrintServices(PrintManager.ENABLED_SERVICES);
if (services == null || services.isEmpty()) {
return mContext.getText(R.string.print_settings_summary_no_service);
} else {
final int count = services.size();
return mContext.getResources().getQuantityString(
R.plurals.print_settings_summary, count, count);
}
}
}
/**
* Should the print job the shown to the user in the settings app.
*
* @param printJob The print job in question.
* @return true iff the print job should be shown.
*/
static boolean shouldShowToUser(PrintJobInfo printJob) {
switch (printJob.getState()) {
case PrintJobInfo.STATE_QUEUED:
case PrintJobInfo.STATE_STARTED:
case PrintJobInfo.STATE_BLOCKED:
case PrintJobInfo.STATE_FAILED: {
return true;
}
}
return false;
}
}
|
