Update confirm device credentials to spec, add fingerprint

- New strings in the screen.
- New layout/style.
- Clean up internal API's around it.
- Add fingerprint support if launched from externally
- Separate theme if launched from externally
- If launched from above Keyguard, use SHOW_WHEN_LOCKED flag

Change-Id: Icdf9bf9e0506841f24e8aab5f0f1d1f4b688951f

src/com/android/settings/ConfirmDeviceCredentialBaseActivity.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 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.KeyguardManager;
+import android.os.Bundle;
+import android.view.MenuItem;
+import android.view.WindowManager;
+
+public class ConfirmDeviceCredentialBaseActivity extends SettingsActivity {
+
+    @Override
+    protected void onCreate(Bundle savedState) {
+        if (getIntent().getBooleanExtra(ConfirmDeviceCredentialBaseFragment.DARK_THEME, false)) {
+            setTheme(R.style.Theme_ConfirmDeviceCredentialsDark);
+        }
+        super.onCreate(savedState);
+        boolean deviceLocked = getSystemService(KeyguardManager.class).isKeyguardLocked();
+        if (deviceLocked && getIntent().getBooleanExtra(
+                ConfirmDeviceCredentialBaseFragment.SHOW_WHEN_LOCKED, false)) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
+        }
+        CharSequence msg = getIntent().getStringExtra(
+                ConfirmDeviceCredentialBaseFragment.TITLE_TEXT);
+        setTitle(msg);
+        if (getActionBar() != null) {
+            getActionBar().setDisplayHomeAsUpEnabled(true);
+            getActionBar().setHomeButtonEnabled(true);
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}