| /* |
| * Copyright (C) 2016 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.settingslib.wifi; |
| |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.drawable.StateListDrawable; |
| import android.net.wifi.WifiConfiguration; |
| import android.os.Looper; |
| import android.os.UserHandle; |
| import android.support.v7.preference.Preference; |
| import android.support.v7.preference.PreferenceViewHolder; |
| import android.text.TextUtils; |
| import android.util.AttributeSet; |
| import android.util.SparseArray; |
| import android.widget.TextView; |
| import com.android.settingslib.R; |
| |
| public class AccessPointPreference extends Preference { |
| |
| private static final int[] STATE_SECURED = { |
| R.attr.state_encrypted |
| }; |
| private static final int[] STATE_NONE = {}; |
| |
| private static int[] wifi_signal_attributes = { R.attr.wifi_signal }; |
| |
| private final StateListDrawable mWifiSld; |
| private final int mBadgePadding; |
| private final UserBadgeCache mBadgeCache; |
| private TextView mTitleView; |
| |
| private boolean mForSavedNetworks = false; |
| private AccessPoint mAccessPoint; |
| private Drawable mBadge; |
| private int mLevel; |
| private CharSequence mContentDescription; |
| private int mDefaultIconResId; |
| |
| static final int[] WIFI_CONNECTION_STRENGTH = { |
| R.string.accessibility_wifi_one_bar, |
| R.string.accessibility_wifi_two_bars, |
| R.string.accessibility_wifi_three_bars, |
| R.string.accessibility_wifi_signal_full |
| }; |
| |
| // Used for dummy pref. |
| public AccessPointPreference(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mWifiSld = null; |
| mBadgePadding = 0; |
| mBadgeCache = null; |
| } |
| |
| public AccessPointPreference(AccessPoint accessPoint, Context context, UserBadgeCache cache, |
| boolean forSavedNetworks) { |
| super(context); |
| mBadgeCache = cache; |
| mAccessPoint = accessPoint; |
| mForSavedNetworks = forSavedNetworks; |
| mAccessPoint.setTag(this); |
| mLevel = -1; |
| |
| mWifiSld = (StateListDrawable) context.getTheme() |
| .obtainStyledAttributes(wifi_signal_attributes).getDrawable(0); |
| |
| // Distance from the end of the title at which this AP's user badge should sit. |
| mBadgePadding = context.getResources() |
| .getDimensionPixelSize(R.dimen.wifi_preference_badge_padding); |
| refresh(); |
| } |
| |
| public AccessPointPreference(AccessPoint accessPoint, Context context, UserBadgeCache cache, |
| int iconResId, boolean forSavedNetworks) { |
| super(context); |
| mBadgeCache = cache; |
| mAccessPoint = accessPoint; |
| mForSavedNetworks = forSavedNetworks; |
| mAccessPoint.setTag(this); |
| mLevel = -1; |
| mDefaultIconResId = iconResId; |
| |
| mWifiSld = (StateListDrawable) context.getTheme() |
| .obtainStyledAttributes(wifi_signal_attributes).getDrawable(0); |
| |
| // Distance from the end of the title at which this AP's user badge should sit. |
| mBadgePadding = context.getResources() |
| .getDimensionPixelSize(R.dimen.wifi_preference_badge_padding); |
| } |
| |
| public AccessPoint getAccessPoint() { |
| return mAccessPoint; |
| } |
| |
| @Override |
| public void onBindViewHolder(final PreferenceViewHolder view) { |
| super.onBindViewHolder(view); |
| if (mAccessPoint == null) { |
| // Used for dummy pref. |
| return; |
| } |
| Drawable drawable = getIcon(); |
| if (drawable != null) { |
| drawable.setLevel(mLevel); |
| } |
| |
| mTitleView = (TextView) view.findViewById(com.android.internal.R.id.title); |
| if (mTitleView != null) { |
| // Attach to the end of the title view |
| mTitleView.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, mBadge, null); |
| mTitleView.setCompoundDrawablePadding(mBadgePadding); |
| } |
| view.itemView.setContentDescription(mContentDescription); |
| } |
| |
| protected void updateIcon(int level, Context context) { |
| if (level == -1) { |
| safeSetDefaultIcon(); |
| } else { |
| if (getIcon() == null) { |
| // To avoid a drawing race condition, we first set the state (SECURE/NONE) and then |
| // set the icon (drawable) to that state's drawable. |
| // If sld is null then we are indexing and therefore do not have access to |
| // (nor need to display) the drawable. |
| if (mWifiSld != null) { |
| mWifiSld.setState((mAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) |
| ? STATE_SECURED |
| : STATE_NONE); |
| Drawable drawable = mWifiSld.getCurrent(); |
| if (!mForSavedNetworks && drawable != null) { |
| setIcon(drawable); |
| return; |
| } |
| } |
| safeSetDefaultIcon(); |
| } |
| } |
| } |
| |
| private void safeSetDefaultIcon() { |
| if (mDefaultIconResId != 0) { |
| setIcon(mDefaultIconResId); |
| } else { |
| setIcon(null); |
| } |
| } |
| |
| protected void updateBadge(Context context) { |
| WifiConfiguration config = mAccessPoint.getConfig(); |
| if (config != null) { |
| // Fetch badge (may be null) |
| // Get the badge using a cache since the PM will ask the UserManager for the list |
| // of profiles every time otherwise. |
| mBadge = mBadgeCache.getUserBadge(config.creatorUid); |
| } |
| } |
| |
| /** |
| * Updates the title and summary; may indirectly call notifyChanged(). |
| */ |
| public void refresh() { |
| if (mForSavedNetworks) { |
| setTitle(mAccessPoint.getConfigName()); |
| } else { |
| setTitle(mAccessPoint.getSsid()); |
| } |
| |
| final Context context = getContext(); |
| int level = mAccessPoint.getLevel(); |
| if (level != mLevel) { |
| mLevel = level; |
| updateIcon(mLevel, context); |
| notifyChanged(); |
| } |
| updateBadge(context); |
| |
| setSummary(mForSavedNetworks ? mAccessPoint.getSavedNetworkSummary() |
| : mAccessPoint.getSettingsSummary()); |
| |
| mContentDescription = getTitle(); |
| if (getSummary() != null) { |
| mContentDescription = TextUtils.concat(mContentDescription, ",", getSummary()); |
| } |
| if (level >= 0 && level < WIFI_CONNECTION_STRENGTH.length) { |
| mContentDescription = TextUtils.concat(mContentDescription, ",", |
| getContext().getString(WIFI_CONNECTION_STRENGTH[level])); |
| } |
| } |
| |
| @Override |
| protected void notifyChanged() { |
| if (Looper.getMainLooper() != Looper.myLooper()) { |
| // Let our BG thread callbacks call setTitle/setSummary. |
| postNotifyChanged(); |
| } else { |
| super.notifyChanged(); |
| } |
| } |
| |
| public void onLevelChanged() { |
| postNotifyChanged(); |
| } |
| |
| private void postNotifyChanged() { |
| if (mTitleView != null) { |
| mTitleView.post(mNotifyChanged); |
| } // Otherwise we haven't been bound yet, and don't need to update. |
| } |
| |
| private final Runnable mNotifyChanged = new Runnable() { |
| @Override |
| public void run() { |
| notifyChanged(); |
| } |
| }; |
| |
| public static class UserBadgeCache { |
| private final SparseArray<Drawable> mBadges = new SparseArray<>(); |
| private final PackageManager mPm; |
| |
| public UserBadgeCache(PackageManager pm) { |
| mPm = pm; |
| } |
| |
| private Drawable getUserBadge(int userId) { |
| int index = mBadges.indexOfKey(userId); |
| if (index < 0) { |
| Drawable badge = mPm.getUserBadgeForDensity(new UserHandle(userId), 0 /* dpi */); |
| mBadges.put(userId, badge); |
| return badge; |
| } |
| return mBadges.valueAt(index); |
| } |
| } |
| } |