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

1 files changed, 102 insertions, 0 deletions

diff --git a/src/com/android/settings/ConfirmDeviceCredentialBaseFragment.java b/src/com/android/settings/ConfirmDeviceCredentialBaseFragment.java
new file mode 100644
index 0000000..f9908b0
--- /dev/null
+++ b/src/com/android/settings/ConfirmDeviceCredentialBaseFragment.java
@@ -0,0 +1,102 @@
+/*
+ * 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.annotation.Nullable;
+import android.app.Fragment;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+/**
+ * Base fragment to be shared for PIN/Pattern/Password confirmation fragments.
+ */
+public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFragment
+        implements FingerprintUiHelper.Callback {
+
+    public static final String PACKAGE = "com.android.settings";
+    public static final String TITLE_TEXT = PACKAGE + ".ConfirmCredentials.title";
+    public static final String HEADER_TEXT = PACKAGE + ".ConfirmCredentials.header";
+    public static final String DETAILS_TEXT = PACKAGE + ".ConfirmCredentials.details";
+    public static final String ALLOW_FP_AUTHENTICATION =
+            PACKAGE + ".ConfirmCredentials.allowFpAuthentication";
+    public static final String DARK_THEME = PACKAGE + ".ConfirmCredentials.darkTheme";
+    public static final String SHOW_CANCEL_BUTTON =
+            PACKAGE + ".ConfirmCredentials.showCancelButton";
+    public static final String SHOW_WHEN_LOCKED =
+            PACKAGE + ".ConfirmCredentials.showWhenLocked";
+
+    private FingerprintUiHelper mFingerprintHelper;
+    private boolean mAllowFpAuthentication;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mAllowFpAuthentication = getActivity().getIntent().getBooleanExtra(
+                ALLOW_FP_AUTHENTICATION, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        mFingerprintHelper = new FingerprintUiHelper(
+                (ImageView) view.findViewById(R.id.fingerprintIcon),
+                (TextView) view.findViewById(R.id.errorText), this);
+        boolean showCancelButton = getActivity().getIntent().getBooleanExtra(
+                SHOW_CANCEL_BUTTON, false);
+        Button cancelButton = (Button) view.findViewById(R.id.cancelButton);
+        cancelButton.setVisibility(showCancelButton ? View.VISIBLE : View.GONE);
+        cancelButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                getActivity().finish();
+            }
+        });
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mAllowFpAuthentication) {
+            mFingerprintHelper.startListening();
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        if (mAllowFpAuthentication) {
+            mFingerprintHelper.stopListening();
+        }
+    }
+
+    @Override
+    public void onAuthenticated() {
+        // Check whether we are still active.
+        if (getActivity() != null && getActivity().isResumed()) {
+            authenticationSucceeded(null /* password */);
+        }
+    }
+
+    protected abstract void authenticationSucceeded(@Nullable String password);
+
+    @Override
+    public void onFingerprintIconVisibilityChanged(boolean visible) {
+    }
+}