Fix 2332563: Add password-lock support to lockscreen

src/com/android/settings/ChooseLockSettingsHelper.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 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.content.Intent;
+
+import com.android.internal.widget.LockPatternUtils;
+
+public class ChooseLockSettingsHelper {
+    private LockPatternUtils mLockPatternUtils;
+    private Activity mActivity;
+
+    public ChooseLockSettingsHelper(Activity activity) {
+        mActivity = activity;
+        mLockPatternUtils = new LockPatternUtils(activity.getContentResolver());
+    }
+
+    public LockPatternUtils utils() {
+        return mLockPatternUtils;
+    }
+
+    /**
+     * If a pattern, password or PIN exists, prompt the user before allowing them to change it.
+     * @return true if one exists and we launched an activity to confirm it
+     * @see #onActivityResult(int, int, android.content.Intent)
+     */
+    protected boolean launchConfirmationActivity(int request) {
+        boolean launched = false;
+        switch (mLockPatternUtils.getPasswordMode()) {
+            case LockPatternUtils.MODE_PATTERN:
+                launched = confirmPattern(request);
+                break;
+            case LockPatternUtils.MODE_PIN:
+            case LockPatternUtils.MODE_PASSWORD:
+                launched = confirmPassword(request);
+                break;
+        }
+        return launched;
+    }
+
+    /**
+     * Launch screen to confirm the existing lock pattern.
+     * @see #onActivityResult(int, int, android.content.Intent)
+     * @return true if we launched an activity to confirm pattern
+     */
+    private boolean confirmPattern(int request) {
+        if (!mLockPatternUtils.isLockPatternEnabled() || !mLockPatternUtils.savedPatternExists()) {
+            return false;
+        }
+        final Intent intent = new Intent();
+        intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPattern");
+        mActivity.startActivityForResult(intent, request);
+        return true;
+    }
+
+    /**
+     * Launch screen to confirm the existing lock password.
+     * @see #onActivityResult(int, int, android.content.Intent)
+     * @return true if we launched an activity to confirm password
+     */
+    private boolean confirmPassword(int request) {
+        if (!mLockPatternUtils.isLockPasswordEnabled()) return false;
+        final Intent intent = new Intent();
+        intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPassword");
+        mActivity.startActivityForResult(intent, request);
+        return true;
+    }
+
+
+}