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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.contacts;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import com.android.contacts.common.activity.TransactionSafeActivity;
import com.android.contacts.common.testing.InjectedServices;
/**
* A common superclass for Contacts activities that handles application-wide services.
*/
public abstract class ContactsActivity extends TransactionSafeActivity
implements ContactSaveService.Listener
{
private ContentResolver mContentResolver;
@Override
public ContentResolver getContentResolver() {
if (mContentResolver == null) {
InjectedServices services = ContactsApplication.getInjectedServices();
if (services != null) {
mContentResolver = services.getContentResolver();
}
if (mContentResolver == null) {
mContentResolver = super.getContentResolver();
}
}
return mContentResolver;
}
@Override
public SharedPreferences getSharedPreferences(String name, int mode) {
InjectedServices services = ContactsApplication.getInjectedServices();
if (services != null) {
SharedPreferences prefs = services.getSharedPreferences();
if (prefs != null) {
return prefs;
}
}
return super.getSharedPreferences(name, mode);
}
@Override
public Object getSystemService(String name) {
Object service = super.getSystemService(name);
if (service != null) {
return service;
}
return getApplicationContext().getSystemService(name);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
ContactSaveService.registerListener(this);
super.onCreate(savedInstanceState);
}
@Override
protected void onDestroy() {
ContactSaveService.unregisterListener(this);
super.onDestroy();
}
@Override
public void onServiceCompleted(Intent callbackIntent) {
onNewIntent(callbackIntent);
}
/**
* Convenient version of {@link FragmentManager#findFragmentById(int)}, which throws
* an exception if the fragment doesn't exist.
*/
@SuppressWarnings("unchecked")
public <T extends Fragment> T getFragment(int id) {
T result = (T)getFragmentManager().findFragmentById(id);
if (result == null) {
throw new IllegalArgumentException("fragment 0x" + Integer.toHexString(id)
+ " doesn't exist");
}
return result;
}
/**
* Convenient version of {@link #findViewById(int)}, which throws
* an exception if the view doesn't exist.
*/
@SuppressWarnings("unchecked")
public <T extends View> T getView(int id) {
T result = (T)findViewById(id);
if (result == null) {
throw new IllegalArgumentException("view 0x" + Integer.toHexString(id)
+ " doesn't exist");
}
return result;
}
protected static void showFragment(FragmentTransaction ft, Fragment f) {
if ((f != null) && f.isHidden()) ft.show(f);
}
protected static void hideFragment(FragmentTransaction ft, Fragment f) {
if ((f != null) && !f.isHidden()) ft.hide(f);
}
}
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