DeviceLoginButton.java

/**
 * Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
 *
 * You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
 * copy, modify, and distribute this software in source code or binary form for use
 * in connection with the web services and APIs provided by Facebook.
 *
 * As with any software that integrates with the Facebook platform, your use of
 * this software is subject to the Facebook Developer Principles and Policies
 * [http://developers.facebook.com/policy/]. This copyright notice shall be
 * included in all copies or substantial portions of the software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.facebook.login.widget;

import android.content.Context;
import android.net.Uri;
import android.util.AttributeSet;
import android.view.View;

import com.facebook.login.DeviceLoginManager;
import com.facebook.login.LoginBehavior;
import com.facebook.login.LoginManager;

/**
 * A Log In/Log Out button that maintains login state and logs in/out for the app.
 * <p/>
 * This control requires the app ID and client token to be specified in the AndroidManifest.xml.
 */
public class DeviceLoginButton extends LoginButton {

    private Uri deviceRedirectUri;

    /**
     * Create the LoginButton by inflating from XML
     *
     * @see View#View(Context, AttributeSet)
     */
    public DeviceLoginButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    /**
     * Create the LoginButton by inflating from XML
     *
     * @see View#View(Context, AttributeSet)
     */
    public DeviceLoginButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    /**
     * Create the LoginButton by inflating from XML and applying a style.
     *
     * @see View#View(Context, AttributeSet, int)
     */
    public DeviceLoginButton(Context context) {
        super(context);
    }

    /**
     * Set uri to redirect the user to after they complete
     * the device login flow on the external device.
     * <p/>
     * The Uri must be configured in your App Settings -> Advanced -> OAuth Redirect URIs.
     *
     * @param uri The URI to set.
     */
    public void setDeviceRedirectUri(Uri uri) {
        this.deviceRedirectUri = uri;
    }

    /**
     * Get the previously set uri that will be used to redirect the user to
     * after they complete the device login flow on the external device.
     * <p/>
     * The Uri must be configured in your App Settings -> Advanced -> OAuth Redirect URIs.
     *
     * @return The current device redirect uri set.
     */
    public Uri getDeviceRedirectUri() {
        return this.deviceRedirectUri;
    }

    @Override
    protected LoginClickListener getNewLoginClickListener() {
        return new DeviceLoginClickListener();
    }

    private class DeviceLoginClickListener extends LoginClickListener {
        @Override
        protected LoginManager getLoginManager() {
            DeviceLoginManager manager = DeviceLoginManager.getInstance();
            manager.setDefaultAudience(getDefaultAudience());
            manager.setLoginBehavior(LoginBehavior.DEVICE_AUTH);
            manager.setDeviceRedirectUri(getDeviceRedirectUri());
            return manager;
        }
    }
}