| /* |
| * 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; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.drawable.Drawable; |
| 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.TypedValue; |
| import android.view.View; |
| import android.widget.TextView; |
| |
| import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin; |
| |
| /** |
| * Helper class for managing settings preferences that can be disabled |
| * by device admins via user restrictions. |
| */ |
| public class RestrictedPreferenceHelper { |
| private final Context mContext; |
| private final Preference mPreference; |
| |
| private boolean mDisabledByAdmin; |
| private EnforcedAdmin mEnforcedAdmin; |
| private String mAttrUserRestriction = null; |
| private boolean mUseAdminDisabledSummary = false; |
| |
| public RestrictedPreferenceHelper(Context context, Preference preference, |
| AttributeSet attrs) { |
| mContext = context; |
| mPreference = preference; |
| |
| if (attrs != null) { |
| final TypedArray attributes = context.obtainStyledAttributes(attrs, |
| R.styleable.RestrictedPreference); |
| final TypedValue userRestriction = |
| attributes.peekValue(R.styleable.RestrictedPreference_userRestriction); |
| CharSequence data = null; |
| if (userRestriction != null && userRestriction.type == TypedValue.TYPE_STRING) { |
| if (userRestriction.resourceId != 0) { |
| data = context.getText(userRestriction.resourceId); |
| } else { |
| data = userRestriction.string; |
| } |
| } |
| mAttrUserRestriction = data == null ? null : data.toString(); |
| // If the system has set the user restriction, then we shouldn't add the padlock. |
| if (RestrictedLockUtils.hasBaseUserRestriction(mContext, mAttrUserRestriction, |
| UserHandle.myUserId())) { |
| mAttrUserRestriction = null; |
| return; |
| } |
| |
| final TypedValue useAdminDisabledSummary = |
| attributes.peekValue(R.styleable.RestrictedPreference_useAdminDisabledSummary); |
| if (useAdminDisabledSummary != null) { |
| mUseAdminDisabledSummary = |
| (useAdminDisabledSummary.type == TypedValue.TYPE_INT_BOOLEAN |
| && useAdminDisabledSummary.data != 0); |
| } |
| } |
| } |
| |
| /** |
| * Modify PreferenceViewHolder to add padlock if restriction is disabled. |
| */ |
| public void onBindViewHolder(PreferenceViewHolder holder) { |
| if (mDisabledByAdmin) { |
| holder.itemView.setEnabled(true); |
| } |
| if (mUseAdminDisabledSummary) { |
| final TextView summaryView = (TextView) holder.findViewById(android.R.id.summary); |
| if (summaryView != null) { |
| final CharSequence disabledText = summaryView.getContext().getText( |
| R.string.disabled_by_admin_summary_text); |
| if (mDisabledByAdmin) { |
| summaryView.setText(disabledText); |
| } else if (TextUtils.equals(disabledText, summaryView.getText())) { |
| // It's previously set to disabled text, clear it. |
| summaryView.setText(null); |
| } |
| } |
| } |
| } |
| |
| public void useAdminDisabledSummary(boolean useSummary) { |
| mUseAdminDisabledSummary = useSummary; |
| } |
| |
| /** |
| * Check if the preference is disabled if so handle the click by informing the user. |
| * |
| * @return true if the method handled the click. |
| */ |
| public boolean performClick() { |
| if (mDisabledByAdmin) { |
| RestrictedLockUtils.sendShowAdminSupportDetailsIntent(mContext, mEnforcedAdmin); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Disable / enable if we have been passed the restriction in the xml. |
| */ |
| public void onAttachedToHierarchy() { |
| if (mAttrUserRestriction != null) { |
| checkRestrictionAndSetDisabled(mAttrUserRestriction, UserHandle.myUserId()); |
| } |
| } |
| |
| /** |
| * Set the user restriction that is used to disable this preference. |
| * |
| * @param userRestriction constant from {@link android.os.UserManager} |
| * @param userId user to check the restriction for. |
| */ |
| public void checkRestrictionAndSetDisabled(String userRestriction, int userId) { |
| EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(mContext, |
| userRestriction, userId); |
| setDisabledByAdmin(admin); |
| } |
| |
| /** |
| * Disable this preference based on the enforce admin. |
| * |
| * @param EnforcedAdmin Details of the admin who enforced the restriction. If it |
| * is {@code null}, then this preference will be enabled. Otherwise, it will be disabled. |
| * @return true if the disabled state was changed. |
| */ |
| public boolean setDisabledByAdmin(EnforcedAdmin admin) { |
| final boolean disabled = (admin != null ? true : false); |
| mEnforcedAdmin = admin; |
| boolean changed = false; |
| if (mDisabledByAdmin != disabled) { |
| mDisabledByAdmin = disabled; |
| changed = true; |
| } |
| mPreference.setEnabled(!disabled); |
| return changed; |
| } |
| |
| public boolean isDisabledByAdmin() { |
| return mDisabledByAdmin; |
| } |
| } |