/*
* Copyright (C) 2014 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.internal.policy.impl;
import android.app.ActivityManager;
import android.content.Context;
import android.os.UserHandle;
import android.provider.Settings;
import android.util.ArraySet;
import android.util.Slog;
import android.view.View;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.view.WindowManagerPolicy.WindowState;
import java.io.PrintWriter;
import java.io.StringWriter;
/**
* Runtime adjustments applied to the global window policy.
*
* This includes forcing immersive mode behavior for one or both system bars (based on a package
* list) and permanently disabling immersive mode confirmations for specific packages.
*
* Control by setting {@link Settings.Global.POLICY_CONTROL} to one or more name-value pairs.
* e.g.
* to force immersive mode everywhere:
* "immersive.full=*"
* to force transient status for all apps except a specific package:
* "immersive.status=apps,-com.package"
* to disable the immersive mode confirmations for specific packages:
* "immersive.preconfirms=com.package.one,com.package.two"
*
* Separate multiple name-value pairs with ':'
* e.g. "immersive.status=apps:immersive.preconfirms=*"
*/
public class PolicyControl {
private static String TAG = "PolicyControl";
private static boolean DEBUG = false;
private static final String NAME_IMMERSIVE_FULL = "immersive.full";
private static final String NAME_IMMERSIVE_STATUS = "immersive.status";
private static final String NAME_IMMERSIVE_NAVIGATION = "immersive.navigation";
private static final String NAME_IMMERSIVE_PRECONFIRMATIONS = "immersive.preconfirms";
private static String sSettingValue;
private static Filter sImmersivePreconfirmationsFilter;
private static Filter sImmersiveStatusFilter;
private static Filter sImmersiveNavigationFilter;
public static int getSystemUiVisibility(WindowState win, LayoutParams attrs) {
attrs = attrs != null ? attrs : win.getAttrs();
int vis = win != null ? win.getSystemUiVisibility() : attrs.systemUiVisibility;
if (sImmersiveStatusFilter != null && sImmersiveStatusFilter.matches(attrs)) {
vis |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
vis &= ~(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.STATUS_BAR_TRANSLUCENT);
}
if (sImmersiveNavigationFilter != null && sImmersiveNavigationFilter.matches(attrs)) {
vis |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
vis &= ~(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.NAVIGATION_BAR_TRANSLUCENT);
}
return vis;
}
public static int getWindowFlags(WindowState win, LayoutParams attrs) {
attrs = attrs != null ? attrs : win.getAttrs();
int flags = attrs.flags;
if (sImmersiveStatusFilter != null && sImmersiveStatusFilter.matches(attrs)) {
flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
flags &= ~(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
| WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
}
if (sImmersiveNavigationFilter != null && sImmersiveNavigationFilter.matches(attrs)) {
flags &= ~WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
}
return flags;
}
public static int adjustClearableFlags(WindowState win, int clearableFlags) {
final LayoutParams attrs = win != null ? win.getAttrs() : null;
if (sImmersiveStatusFilter != null && sImmersiveStatusFilter.matches(attrs)) {
clearableFlags &= ~View.SYSTEM_UI_FLAG_FULLSCREEN;
}
return clearableFlags;
}
public static boolean disableImmersiveConfirmation(String pkg) {
return (sImmersivePreconfirmationsFilter != null
&& sImmersivePreconfirmationsFilter.matches(pkg))
|| ActivityManager.isRunningInTestHarness();
}
public static void reloadFromSetting(Context context) {
if (DEBUG) Slog.d(TAG, "reloadFromSetting()");
String value = null;
try {
value = Settings.Global.getStringForUser(context.getContentResolver(),
Settings.Global.POLICY_CONTROL,
UserHandle.USER_CURRENT);
if (sSettingValue != null && sSettingValue.equals(value)) return;
setFilters(value);
sSettingValue = value;
} catch (Throwable t) {
Slog.w(TAG, "Error loading policy control, value=" + value, t);
}
}
public static void dump(String prefix, PrintWriter pw) {
dump("sImmersiveStatusFilter", sImmersiveStatusFilter, prefix, pw);
dump("sImmersiveNavigationFilter", sImmersiveNavigationFilter, prefix, pw);
dump("sImmersivePreconfirmationsFilter", sImmersivePreconfirmationsFilter, prefix, pw);
}
private static void dump(String name, Filter filter, String prefix, PrintWriter pw) {
pw.print(prefix); pw.print("PolicyControl."); pw.print(name); pw.print('=');
if (filter == null) {
pw.println("null");
} else {
filter.dump(pw); pw.println();
}
}
private static void setFilters(String value) {
if (DEBUG) Slog.d(TAG, "setFilters: " + value);
sImmersiveStatusFilter = null;
sImmersiveNavigationFilter = null;
sImmersivePreconfirmationsFilter = null;
if (value != null) {
String[] nvps = value.split(":");
for (String nvp : nvps) {
int i = nvp.indexOf('=');
if (i == -1) continue;
String n = nvp.substring(0, i);
String v = nvp.substring(i + 1);
if (n.equals(NAME_IMMERSIVE_FULL)) {
Filter f = Filter.parse(v);
sImmersiveStatusFilter = sImmersiveNavigationFilter = f;
if (sImmersivePreconfirmationsFilter == null) {
sImmersivePreconfirmationsFilter = f;
}
} else if (n.equals(NAME_IMMERSIVE_STATUS)) {
Filter f = Filter.parse(v);
sImmersiveStatusFilter = f;
} else if (n.equals(NAME_IMMERSIVE_NAVIGATION)) {
Filter f = Filter.parse(v);
sImmersiveNavigationFilter = f;
if (sImmersivePreconfirmationsFilter == null) {
sImmersivePreconfirmationsFilter = f;
}
} else if (n.equals(NAME_IMMERSIVE_PRECONFIRMATIONS)) {
Filter f = Filter.parse(v);
sImmersivePreconfirmationsFilter = f;
}
}
}
if (DEBUG) {
Slog.d(TAG, "immersiveStatusFilter: " + sImmersiveStatusFilter);
Slog.d(TAG, "immersiveNavigationFilter: " + sImmersiveNavigationFilter);
Slog.d(TAG, "immersivePreconfirmationsFilter: " + sImmersivePreconfirmationsFilter);
}
}
private static class Filter {
private static final String ALL = "*";
private static final String APPS = "apps";
private final ArraySet<String> mWhitelist;
private final ArraySet<String> mBlacklist;
private Filter(ArraySet<String> whitelist, ArraySet<String> blacklist) {
mWhitelist = whitelist;
mBlacklist = blacklist;
}
boolean matches(LayoutParams attrs) {
if (attrs == null) return false;
boolean isApp = attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW
&& attrs.type <= WindowManager.LayoutParams.LAST_APPLICATION_WINDOW;
if (isApp && mBlacklist.contains(APPS)) return false;
if (onBlacklist(attrs.packageName)) return false;
if (isApp && mWhitelist.contains(APPS)) return true;
return onWhitelist(attrs.packageName);
}
boolean matches(String packageName) {
return !onBlacklist(packageName) && onWhitelist(packageName);
}
private boolean onBlacklist(String packageName) {
return mBlacklist.contains(packageName) || mBlacklist.contains(ALL);
}
private boolean onWhitelist(String packageName) {
return mWhitelist.contains(ALL) || mWhitelist.contains(packageName);
}
void dump(PrintWriter pw) {
pw.print("Filter[");
dump("whitelist", mWhitelist, pw); pw.print(',');
dump("blacklist", mBlacklist, pw); pw.print(']');
}
private void dump(String name, ArraySet<String> set, PrintWriter pw) {
pw.print(name); pw.print("=(");
final int n = set.size();
for (int i = 0; i < n; i++) {
if (i > 0) pw.print(',');
pw.print(set.valueAt(i));
}
pw.print(')');
}
@Override
public String toString() {
StringWriter sw = new StringWriter();
dump(new PrintWriter(sw, true));
return sw.toString();
}
// value = comma-delimited list of tokens, where token = (package name|apps|*)
// e.g. "com.package1", or "apps, com.android.keyguard" or "*"
static Filter parse(String value) {
if (value == null) return null;
ArraySet<String> whitelist = new ArraySet<String>();
ArraySet<String> blacklist = new ArraySet<String>();
for (String token : value.split(",")) {
token = token.trim();
if (token.startsWith("-") && token.length() > 1) {
token = token.substring(1);
blacklist.add(token);
} else {
whitelist.add(token);
}
}
return new Filter(whitelist, blacklist);
}
}
}
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