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/*
* 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;
}
}
}
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