package de.tudarmstadt.informatik.hostage.ui2.fragment;

import android.app.Fragment;

/**
 * This abstract fragments allows the definition of an child - parent relation of fragments. It is necessary for the app to allow Up navigation of fragments.
 *
 * @author Alexander Brakowski
 * @created 12.03.14 16:20
 */
public abstract class UpNavigatibleFragment extends TrackerFragment {
	/**
	 * Holds a reference to the parent fragment
	 */
	private Class<?> mUpFragment;

	/**
	 * Indicates whether the fragment is up navigatible
	 */
	private boolean mIsUpNavigatible = false;

	private boolean mAllowBack = false;

	/**
	 * Retrieves the parent fragment to be used for up navigation
	 * @return the parent fragment
	 */
	public Class<?> getUpFragment(){
		return mUpFragment;
	}

	/**
	 * Sets the parent fragment of this fragment.
	 * @param upFragment the fragment to set as parent
	 */
	public void setUpFragment(Class<?> upFragment){
		this.mUpFragment = upFragment;
	}

	/**
	 * Checks whether this fragment can be navigated up
	 *
	 * @return true if this fragment can be up navigated,
	 *         false otherwise
	 */
	public boolean isUpNavigatible(){
		return mIsUpNavigatible;
	}

	/**
	 * Sets the state of up navigation for this fragment
	 * @param isUpNavigatible true to allow up navigation
	 *                        false no up navigation
	 */
	public void setUpNavigatible(boolean isUpNavigatible){
		this.mIsUpNavigatible = isUpNavigatible;
	}

	public boolean getAllowBack(){
		return mAllowBack;
	}

	public void setAllowBack(boolean allowBack){
		this.mAllowBack = allowBack;
	}
}