CertDialog supports multiple certs
- Allow user to trust multiple certs in chain in one AlertDialog - The animation is similar to GrantPermissionsViewHandlerImpl. - Fadeout current, Slide-in next cert from the right. - Not animate scale as the CustomeView in AlertDialog matchParent - Refactor CertDialogBuilder into a separate class - The change for config multiple cert into the dialog is another CL note: For single cert case when user taps on a system/user cert, no change is visible to user after this change Bug: 18224038 Change-Id: I09ee8f683031c800830af4001582882d61cd4974
This commit is contained in:
Victor Chang
342
src/com/android/settings/TrustedCredentialsDialogBuilder.java
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342
src/com/android/settings/TrustedCredentialsDialogBuilder.java
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/*
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* Copyright (C) 2016 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;
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import android.annotation.NonNull;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.app.admin.DevicePolicyManager;
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import android.content.DialogInterface;
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import android.net.http.SslCertificate;
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import android.os.UserHandle;
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import android.os.UserManager;
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import android.view.View;
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import android.view.animation.AnimationUtils;
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import android.widget.AdapterView;
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import android.widget.ArrayAdapter;
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import android.widget.Button;
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import android.widget.LinearLayout;
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import android.widget.Spinner;
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import com.android.settings.TrustedCredentialsSettings.CertHolder;
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import java.security.cert.X509Certificate;
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import java.util.ArrayList;
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import java.util.List;
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class TrustedCredentialsDialogBuilder extends AlertDialog.Builder {
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public interface DelegateInterface {
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List<X509Certificate> getX509CertsFromCertHolder(CertHolder certHolder);
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void removeOrInstallCert(CertHolder certHolder);
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}
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private final DialogEventHandler mDialogEventHandler;
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public TrustedCredentialsDialogBuilder(Activity activity, DelegateInterface delegate) {
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super(activity);
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mDialogEventHandler = new DialogEventHandler(activity, delegate);
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initDefaultBuilderParams();
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}
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public TrustedCredentialsDialogBuilder setCertHolder(CertHolder certHolder) {
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return setCertHolders(certHolder == null ? new CertHolder[0]
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: new CertHolder[]{certHolder});
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}
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public TrustedCredentialsDialogBuilder setCertHolders(@NonNull CertHolder[] certHolders) {
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mDialogEventHandler.setCertHolders(certHolders);
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return this;
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}
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@Override
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public AlertDialog create() {
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AlertDialog dialog = super.create();
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dialog.setOnShowListener(mDialogEventHandler);
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mDialogEventHandler.setDialog(dialog);
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return dialog;
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}
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private void initDefaultBuilderParams() {
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setTitle(com.android.internal.R.string.ssl_certificate);
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setView(mDialogEventHandler.mRootContainer);
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// Enable buttons here. The actual labels and listeners are configured in nextOrDismiss
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setPositiveButton(R.string.trusted_credentials_trust_label, null);
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setNegativeButton(android.R.string.ok, null);
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}
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private static class DialogEventHandler implements DialogInterface.OnShowListener,
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View.OnClickListener {
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private static final long OUT_DURATION_MS = 300;
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private static final long IN_DURATION_MS = 200;
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private final Activity mActivity;
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private final DevicePolicyManager mDpm;
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private final UserManager mUserManager;
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private final DelegateInterface mDelegate;
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private final LinearLayout mRootContainer;
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private int mCurrentCertIndex = -1;
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private AlertDialog mDialog;
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private Button mPositiveButton;
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private Button mNegativeButton;
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private boolean mNeedsApproval;
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private CertHolder[] mCertHolders = new CertHolder[0];
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private View mCurrentCertLayout = null;
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public DialogEventHandler(Activity activity, DelegateInterface delegate) {
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mActivity = activity;
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mDpm = activity.getSystemService(DevicePolicyManager.class);
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mUserManager = activity.getSystemService(UserManager.class);
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mDelegate = delegate;
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mRootContainer = new LinearLayout(mActivity);
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mRootContainer.setOrientation(LinearLayout.VERTICAL);
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}
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public void setDialog(AlertDialog dialog) {
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mDialog = dialog;
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}
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public void setCertHolders(CertHolder[] certHolder) {
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mCertHolders = certHolder;
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}
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@Override
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public void onShow(DialogInterface dialogInterface) {
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// Config the display content only when the dialog is shown because the
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// positive/negative buttons don't exist until the dialog is shown
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nextOrDismiss();
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}
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@Override
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public void onClick(View view) {
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if (view == mPositiveButton) {
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if (mNeedsApproval) {
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onClickTrust();
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} else {
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onClickOk();
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}
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} else if (view == mNegativeButton) {
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onClickRemove();
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}
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}
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private void onClickOk() {
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nextOrDismiss();
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}
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private void onClickTrust() {
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CertHolder certHolder = getCurrentCertInfo();
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mDpm.approveCaCert(certHolder.getAlias(), certHolder.getUserId(), true);
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nextOrDismiss();
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}
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private void onClickRemove() {
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final CertHolder certHolder = getCurrentCertInfo();
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new AlertDialog.Builder(mActivity)
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.setMessage(getButtonConfirmation(certHolder))
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.setPositiveButton(android.R.string.yes,
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new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int id) {
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mDelegate.removeOrInstallCert(certHolder);
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dialog.dismiss();
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nextOrDismiss();
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}
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})
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.setNegativeButton(android.R.string.no, null)
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.show();
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}
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private CertHolder getCurrentCertInfo() {
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return mCurrentCertIndex < mCertHolders.length ? mCertHolders[mCurrentCertIndex] : null;
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}
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private void nextOrDismiss() {
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mCurrentCertIndex++;
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// find next non-null cert or dismiss
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while (mCurrentCertIndex < mCertHolders.length && getCurrentCertInfo() == null) {
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mCurrentCertIndex++;
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}
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if (mCurrentCertIndex >= mCertHolders.length) {
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mDialog.dismiss();
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return;
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}
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updateViewContainer();
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updatePositiveButton();
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updateNegativeButton();
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}
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private void updatePositiveButton() {
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final CertHolder certHolder = getCurrentCertInfo();
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mNeedsApproval = !certHolder.isSystemCert() &&
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!mDpm.isCaCertApproved(certHolder.getAlias(), certHolder.getUserId());
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// The ok button is optional. User can still dismiss the dialog by other means.
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// Display it only when trust button is not displayed, because we want users to
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// either remove or trust a CA cert when the cert is installed by DPC app.
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CharSequence displayText = mActivity.getText(mNeedsApproval
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? R.string.trusted_credentials_trust_label
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: android.R.string.ok);
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mPositiveButton = updateButton(DialogInterface.BUTTON_POSITIVE, displayText);
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}
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private void updateNegativeButton() {
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final CertHolder certHolder = getCurrentCertInfo();
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final boolean showRemoveButton = !mUserManager.hasUserRestriction(
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UserManager.DISALLOW_CONFIG_CREDENTIALS,
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new UserHandle(certHolder.getUserId()));
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CharSequence displayText = mActivity.getText(getButtonLabel(certHolder));
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mNegativeButton = updateButton(DialogInterface.BUTTON_NEGATIVE, displayText);
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mNegativeButton.setVisibility(showRemoveButton ? View.VISIBLE : View.GONE);
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}
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/**
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* mDialog.setButton doesn't trigger text refresh since mDialog has been shown.
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* It's invoked only in case mDialog is refreshed.
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* setOnClickListener is invoked to avoid dismiss dialog onClick
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*/
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private Button updateButton(int buttonType, CharSequence displayText) {
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mDialog.setButton(buttonType, displayText, (DialogInterface.OnClickListener) null);
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Button button = mDialog.getButton(buttonType);
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button.setText(displayText);
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button.setOnClickListener(this);
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return button;
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}
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private void updateViewContainer() {
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CertHolder certHolder = getCurrentCertInfo();
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LinearLayout nextCertLayout = getCertLayout(certHolder);
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// Displaying first cert doesn't require animation
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if (mCurrentCertLayout == null) {
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mCurrentCertLayout = nextCertLayout;
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mRootContainer.addView(mCurrentCertLayout);
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} else {
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animateViewTransition(nextCertLayout);
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}
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}
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private LinearLayout getCertLayout(final CertHolder certHolder) {
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final ArrayList<View> views = new ArrayList<View>();
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final ArrayList<String> titles = new ArrayList<String>();
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List<X509Certificate> certificates = mDelegate.getX509CertsFromCertHolder(certHolder);
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if (certificates != null) {
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for (X509Certificate certificate : certificates) {
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SslCertificate sslCert = new SslCertificate(certificate);
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views.add(sslCert.inflateCertificateView(mActivity));
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titles.add(sslCert.getIssuedTo().getCName());
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}
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}
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ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(mActivity,
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android.R.layout.simple_spinner_item,
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titles);
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arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
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Spinner spinner = new Spinner(mActivity);
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spinner.setAdapter(arrayAdapter);
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spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
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@Override
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public void onItemSelected(AdapterView<?> parent, View view, int position,
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long id) {
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for (int i = 0; i < views.size(); i++) {
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views.get(i).setVisibility(i == position ? View.VISIBLE : View.GONE);
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}
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}
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@Override
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public void onNothingSelected(AdapterView<?> parent) {
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}
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});
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LinearLayout certLayout = new LinearLayout(mActivity);
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certLayout.setOrientation(LinearLayout.VERTICAL);
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certLayout.addView(spinner);
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for (int i = 0; i < views.size(); ++i) {
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View certificateView = views.get(i);
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// Show first cert by default
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certificateView.setVisibility(i == 0 ? View.VISIBLE : View.GONE);
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certLayout.addView(certificateView);
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}
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return certLayout;
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}
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private static int getButtonConfirmation(CertHolder certHolder) {
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return certHolder.isSystemCert() ? ( certHolder.isDeleted()
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? R.string.trusted_credentials_enable_confirmation
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: R.string.trusted_credentials_disable_confirmation )
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: R.string.trusted_credentials_remove_confirmation;
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}
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private static int getButtonLabel(CertHolder certHolder) {
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return certHolder.isSystemCert() ? ( certHolder.isDeleted()
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? R.string.trusted_credentials_enable_label
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: R.string.trusted_credentials_disable_label )
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: R.string.trusted_credentials_remove_label;
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}
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/* Animation code */
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private void animateViewTransition(final View nextCertView) {
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animateOldContent(new Runnable() {
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@Override
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public void run() {
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addAndAnimateNewContent(nextCertView);
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}
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});
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}
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private void animateOldContent(Runnable callback) {
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// Fade out
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mCurrentCertLayout.animate()
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.alpha(0)
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.setDuration(OUT_DURATION_MS)
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.setInterpolator(AnimationUtils.loadInterpolator(mActivity,
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android.R.interpolator.fast_out_linear_in))
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.withEndAction(callback)
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.start();
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}
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private void addAndAnimateNewContent(View nextCertLayout) {
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mCurrentCertLayout = nextCertLayout;
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mRootContainer.removeAllViews();
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mRootContainer.addView(nextCertLayout);
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mRootContainer.addOnLayoutChangeListener( new View.OnLayoutChangeListener() {
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@Override
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public void onLayoutChange(View v, int left, int top, int right, int bottom,
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int oldLeft, int oldTop, int oldRight, int oldBottom) {
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mRootContainer.removeOnLayoutChangeListener(this);
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// Animate slide in from the right
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final int containerWidth = mRootContainer.getWidth();
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mCurrentCertLayout.setTranslationX(containerWidth);
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mCurrentCertLayout.animate()
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.translationX(0)
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.setInterpolator(AnimationUtils.loadInterpolator(mActivity,
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android.R.interpolator.linear_out_slow_in))
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.setDuration(IN_DURATION_MS)
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.start();
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}
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});
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}
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}
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}
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