1 files changed, 137 insertions, 0 deletions
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
new file mode 100644
index 0000000..83511c9
--- /dev/null
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -0,0 +1,137 @@
+/*
+ * 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.Dialog;
+import android.app.DialogFragment;
+import android.content.ContentResolver;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+import android.util.Log;
+
+/**
+ * Base class for Settings fragments, with some helper functions and dialog management.
+ */
+public class SettingsPreferenceFragment extends PreferenceFragment {
+
+    private static final String TAG = "SettingsPreferenceFragment";
+
+    private SettingsDialogFragment mDialogFragment;
+
+    private OnStateListener mOnStateListener;
+
+    interface OnStateListener {
+
+        void onCreated(SettingsPreferenceFragment fragment);
+
+        void onDestroyed(SettingsPreferenceFragment fragment);
+    }
+
+    public void setOnStateListener(OnStateListener listener) {
+        mOnStateListener = listener;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        if (mOnStateListener != null) {
+            mOnStateListener.onCreated(this);
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (mOnStateListener != null) {
+            mOnStateListener.onDestroyed(this);
+        }
+    }
+
+    // Some helpers for functions used by the settings fragments when they were activities
+
+    /**
+     * Returns the ContentResolver from the owning Activity.
+     */
+    protected ContentResolver getContentResolver() {
+        return getActivity().getContentResolver();
+    }
+
+    /**
+     * Returns the specified system service from the owning Activity.
+     */
+    protected Object getSystemService(final String name) {
+        return getActivity().getSystemService(name);
+    }
+
+    /**
+     * Returns the Resources from the owning Activity.
+     */
+    protected Resources getResources() {
+        return getActivity().getResources();
+    }
+
+    /**
+     * Returns the PackageManager from the owning Activity.
+     */
+    protected PackageManager getPackageManager() {
+        return getActivity().getPackageManager();
+    }
+
+    // Dialog management
+
+    protected void showDialog(int dialogId) {
+        if (mDialogFragment != null) {
+            Log.e(TAG, "Old dialog fragment not null!");
+        }
+        mDialogFragment = new SettingsDialogFragment(this, dialogId);
+        mDialogFragment.show(getActivity(), Integer.toString(dialogId));
+    }
+
+    public Dialog onCreateDialog(int dialogId) {
+        return null;
+    }
+
+    protected void removeDialog(int dialogId) {
+        if (mDialogFragment != null && mDialogFragment.getDialogId() == dialogId
+                && mDialogFragment.isVisible()) {
+            mDialogFragment.dismiss();
+        }
+        mDialogFragment = null;
+    }
+
+    static class SettingsDialogFragment extends DialogFragment {
+        private int mDialogId;
+
+        private SettingsPreferenceFragment mFragment;
+
+        SettingsDialogFragment(SettingsPreferenceFragment fragment, int dialogId) {
+            mDialogId = dialogId;
+            mFragment = fragment;
+        }
+
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            return mFragment.onCreateDialog(mDialogId);
+        }
+
+        public int getDialogId() {
+            return mDialogId;
+        }
+    }
+}