/**
* Copyright 2010-present Facebook
*
* 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.facebook.android;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageButton;
import com.facebook.android.Facebook.DialogListener;
import com.facebook.android.SessionEvents.AuthListener;
import com.facebook.android.SessionEvents.LogoutListener;
@SuppressWarnings("deprecation")
public class LoginButton extends ImageButton {
private Facebook mFb;
private Handler mHandler;
private SessionListener mSessionListener = new SessionListener();
private String[] mPermissions;
private Activity mActivity;
private int mActivityCode;
public LoginButton(Context context) {
super(context);
}
public LoginButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LoginButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void init(final Activity activity, final int activityCode, final Facebook fb) {
init(activity, activityCode, fb, new String[] {});
}
public void init(final Activity activity, final int activityCode, final Facebook fb,
final String[] permissions) {
mActivity = activity;
mActivityCode = activityCode;
mFb = fb;
mPermissions = permissions;
mHandler = new Handler();
setBackgroundColor(Color.TRANSPARENT);
setImageResource(fb.isSessionValid() ? R.drawable.logout_button : R.drawable.login_button);
drawableStateChanged();
SessionEvents.addAuthListener(mSessionListener);
SessionEvents.addLogoutListener(mSessionListener);
setOnClickListener(new ButtonOnClickListener());
}
private final class ButtonOnClickListener implements OnClickListener {
/*
* Source Tag: login_tag
*/
@Override
public void onClick(View arg0) {
if (mFb.isSessionValid()) {
SessionEvents.onLogoutBegin();
AsyncFacebookRunner asyncRunner = new AsyncFacebookRunner(mFb);
asyncRunner.logout(getContext(), new LogoutRequestListener());
} else {
mFb.authorize(mActivity, mPermissions, mActivityCode, new LoginDialogListener());
}
}
}
private final class LoginDialogListener implements DialogListener {
@Override
public void onComplete(Bundle values) {
SessionEvents.onLoginSuccess();
}
@Override
public void onFacebookError(FacebookError error) {
SessionEvents.onLoginError(error.getMessage());
}
@Override
public void onError(DialogError error) {
SessionEvents.onLoginError(error.getMessage());
}
@Override
public void onCancel() {
SessionEvents.onLoginError("Action Canceled");
}
}
private class LogoutRequestListener extends BaseRequestListener {
@Override
public void onComplete(String response, final Object state) {
/*
* callback should be run in the original thread, not the background
* thread
*/
mHandler.post(new Runnable() {
@Override
public void run() {
SessionEvents.onLogoutFinish();
}
});
}
}
private class SessionListener implements AuthListener, LogoutListener {
@Override
public void onAuthSucceed() {
setImageResource(R.drawable.logout_button);
SessionStore.save(mFb, getContext());
}
@Override
public void onAuthFail(String error) {
}
@Override
public void onLogoutBegin() {
}
@Override
public void onLogoutFinish() {
SessionStore.clear(getContext());
setImageResource(R.drawable.login_button);
}
}
}