Extract credential storage dialogs to a new activity.

Since now SecuritySettings is a fragment, not an activity, reacting
to intents is not easier anymore. The new activity is transparent,
and it works just like a dialog. This change also refactor'ed
SecuritySettings by moving some preference construction into
security_settings_misc.xml.

Bug: 3120992
Bug: 2117436
Change-Id: I8bd3fc7faa2a31d100b8d67310f9266260cfc31d

1 files changed, 230 insertions, 0 deletions

diff --git a/src/com/android/settings/CredentialStorage.java b/src/com/android/settings/CredentialStorage.java
new file mode 100644
index 0000000..9d5a603
--- /dev/null
+++ b/src/com/android/settings/CredentialStorage.java
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2011 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;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.security.KeyStore;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.io.UnsupportedEncodingException;
+
+public class CredentialStorage extends Activity implements TextWatcher,
+        DialogInterface.OnClickListener, DialogInterface.OnDismissListener {
+
+    public static final String ACTION_UNLOCK = "com.android.credentials.UNLOCK";
+    public static final String ACTION_SET_PASSWORD = "com.android.credentials.SET_PASSWORD";
+    public static final String ACTION_INSTALL = "com.android.credentials.INSTALL";
+    public static final String ACTION_RESET = "com.android.credentials.RESET";
+
+    private static final String TAG = "CredentialStorage";
+
+    private KeyStore mKeyStore = KeyStore.getInstance();
+    private boolean mSubmit = false;
+    private Bundle mBundle;
+
+    private TextView mOldPassword;
+    private TextView mNewPassword;
+    private TextView mConfirmPassword;
+    private TextView mError;
+    private Button mButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Intent intent = getIntent();
+        String action = intent.getAction();
+        int state = mKeyStore.test();
+
+        if (ACTION_RESET.equals(action)) {
+            showResetDialog();
+        } else if (ACTION_SET_PASSWORD.equals(action)) {
+            showPasswordDialog(state == KeyStore.UNINITIALIZED);
+        } else {
+            if (ACTION_INSTALL.equals(action) &&
+                    "com.android.certinstaller".equals(getCallingPackage())) {
+                mBundle = intent.getExtras();
+            }
+            if (state == KeyStore.UNINITIALIZED) {
+                showPasswordDialog(true);
+            } else if (state == KeyStore.LOCKED) {
+                showUnlockDialog();
+            } else {
+                install();
+                finish();
+            }
+        }
+    }
+
+    private void install() {
+        if (mBundle != null && !mBundle.isEmpty()) {
+            try {
+                for (String key : mBundle.keySet()) {
+                    byte[] value = mBundle.getByteArray(key);
+                    if (value != null && !mKeyStore.put(key.getBytes("UTF-8"), value)) {
+                        Log.e(TAG, "Failed to install " + key);
+                        return;
+                    }
+                }
+                setResult(RESULT_OK);
+            } catch (UnsupportedEncodingException e) {
+                // Should never happen.
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private void showResetDialog() {
+        AlertDialog dialog = new AlertDialog.Builder(this)
+                .setTitle(android.R.string.dialog_alert_title)
+                .setIcon(android.R.drawable.ic_dialog_alert)
+                .setMessage(R.string.credentials_reset_hint)
+                .setNeutralButton(android.R.string.ok, this)
+                .setNegativeButton(android.R.string.cancel, this)
+                .create();
+        dialog.setOnDismissListener(this);
+        dialog.show();
+    }
+
+    private void showPasswordDialog(boolean firstTime) {
+        View view = View.inflate(this, R.layout.credentials_dialog, null);
+
+        ((TextView) view.findViewById(R.id.hint)).setText(R.string.credentials_password_hint);
+        if (!firstTime) {
+            view.findViewById(R.id.old_password_prompt).setVisibility(View.VISIBLE);
+            mOldPassword = (TextView) view.findViewById(R.id.old_password);
+            mOldPassword.setVisibility(View.VISIBLE);
+            mOldPassword.addTextChangedListener(this);
+        }
+        view.findViewById(R.id.new_passwords).setVisibility(View.VISIBLE);
+        mNewPassword = (TextView) view.findViewById(R.id.new_password);
+        mNewPassword.addTextChangedListener(this);
+        mConfirmPassword = (TextView) view.findViewById(R.id.confirm_password);
+        mConfirmPassword.addTextChangedListener(this);
+        mError = (TextView) view.findViewById(R.id.error);
+
+        AlertDialog dialog = new AlertDialog.Builder(this)
+                .setView(view)
+                .setTitle(R.string.credentials_set_password)
+                .setPositiveButton(android.R.string.ok, this)
+                .setNegativeButton(android.R.string.cancel, this)
+                .create();
+        dialog.setOnDismissListener(this);
+        dialog.show();
+        mButton = dialog.getButton(DialogInterface.BUTTON_POSITIVE);
+        mButton.setEnabled(false);
+    }
+
+    private void showUnlockDialog() {
+        View view = View.inflate(this, R.layout.credentials_dialog, null);
+
+        ((TextView) view.findViewById(R.id.hint)).setText(R.string.credentials_unlock_hint);
+        mOldPassword = (TextView) view.findViewById(R.id.old_password);
+        mOldPassword.setVisibility(View.VISIBLE);
+        mOldPassword.addTextChangedListener(this);
+        mError = (TextView) view.findViewById(R.id.error);
+
+        AlertDialog dialog = new AlertDialog.Builder(this)
+                .setView(view)
+                .setTitle(R.string.credentials_unlock)
+                .setPositiveButton(android.R.string.ok, this)
+                .setNegativeButton(android.R.string.cancel, this)
+                .create();
+        dialog.setOnDismissListener(this);
+        dialog.show();
+        mButton = dialog.getButton(DialogInterface.BUTTON_POSITIVE);
+        mButton.setEnabled(false);
+    }
+
+    public void afterTextChanged(Editable editable) {
+        if ((mOldPassword == null || mOldPassword.getText().length() > 0) &&
+            (mNewPassword == null || mNewPassword.getText().length() >= 8) &&
+            (mConfirmPassword == null || mConfirmPassword.getText().length() >= 8)) {
+            mButton.setEnabled(true);
+        } else {
+            mButton.setEnabled(false);
+        }
+    }
+
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+    }
+
+    public void onTextChanged(CharSequence s,int start, int before, int count) {
+    }
+
+    public void onClick(DialogInterface dialog, int button) {
+        mSubmit = (button == DialogInterface.BUTTON_POSITIVE);
+        if (button == DialogInterface.BUTTON_NEUTRAL) {
+            mKeyStore.reset();
+            Toast.makeText(this, R.string.credentials_erased, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    public void onDismiss(DialogInterface dialog) {
+        if (mSubmit) {
+            mSubmit = false;
+            mError.setVisibility(View.VISIBLE);
+
+            if (mNewPassword == null) {
+                mKeyStore.unlock(mOldPassword.getText().toString());
+            } else {
+                String newPassword = mNewPassword.getText().toString();
+                String confirmPassword = mConfirmPassword.getText().toString();
+
+                if (!newPassword.equals(confirmPassword)) {
+                    mError.setText(R.string.credentials_passwords_mismatch);
+                    ((AlertDialog) dialog).show();
+                    return;
+                } else if (mOldPassword == null) {
+                    mKeyStore.password(newPassword);
+                } else {
+                    mKeyStore.password(mOldPassword.getText().toString(), newPassword);
+                }
+            }
+
+            int error = mKeyStore.getLastError();
+            if (error == KeyStore.NO_ERROR) {
+                Toast.makeText(this, R.string.credentials_enabled, Toast.LENGTH_SHORT).show();
+                install();
+            } else if (error == KeyStore.UNINITIALIZED) {
+                Toast.makeText(this, R.string.credentials_erased,  Toast.LENGTH_SHORT).show();
+            } else if (error >= KeyStore.WRONG_PASSWORD) {
+                int count = error - KeyStore.WRONG_PASSWORD + 1;
+                if (count > 3) {
+                    mError.setText(R.string.credentials_wrong_password);
+                } else if (count == 1) {
+                    mError.setText(R.string.credentials_reset_warning);
+                } else {
+                    mError.setText(getString(R.string.credentials_reset_warning_plural, count));
+                }
+                ((AlertDialog) dialog).show();
+                return;
+            }
+        }
+        finish();
+    }
+}