IntentBind.java

/*
 * Copyright 2015 Rayco Araña
 *
 *     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.raycoarana.baindo.intent;

import android.content.Intent;

import com.raycoarana.baindo.WorkDispatcher;
import com.raycoarana.baindo.binding.FinalBindTarget;
import com.raycoarana.baindo.observables.AbstractProperty;

public abstract class IntentBind<T> implements FinalBindTarget<AbstractProperty<T>> {

    protected final WorkDispatcher mWorkDispatcher;
    protected AbstractProperty<T> mTarget;
    protected Intent mLastIntent;

    public IntentBind(WorkDispatcher workDispatcher) {
        mWorkDispatcher = workDispatcher;
    }

    @Override
    public void to(AbstractProperty<T> target) {
        mTarget = target;
        if(mLastIntent != null) {
            onNewIntent(mLastIntent);
        }
    }

    public void onNewIntent(final Intent intent) {
        if(mTarget == null) {
            mLastIntent = intent;
            return;
        }

        mWorkDispatcher.doInBackgroundThread(new Runnable() {
            @Override
            public void run() {
                mTarget.setValue(getValueFromIntent(intent));
            }
        });
    }

    public abstract T getValueFromIntent(Intent intent);

}