de.uni.stuttgart.informatik.ToureNPlaner.UI.Fragments.ConstraintListFragment.java Source code

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Here is the source code for de.uni.stuttgart.informatik.ToureNPlaner.UI.Fragments.ConstraintListFragment.java

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/*
 * Copyright 2012 ToureNPlaner
 *
 *    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 de.uni.stuttgart.informatik.ToureNPlaner.UI.Fragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import de.uni.stuttgart.informatik.ToureNPlaner.Data.Constraints.Constraint;
import de.uni.stuttgart.informatik.ToureNPlaner.R;
import de.uni.stuttgart.informatik.ToureNPlaner.UI.ConstraintFragments.ConstraintFragment;

import java.util.ArrayList;

public class ConstraintListFragment extends Fragment {
    public static String IDENTIFIER = "constraints";

    private ArrayList<Constraint> constraints;

    public boolean isDirty() {
        for (int i = 0; i < constraints.size(); i++) {
            if (((ConstraintFragment) getActivity().getSupportFragmentManager().findFragmentById(i + 1))
                    .isDirty()) {
                return true;
            }
        }
        return false;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        outState.putSerializable(IDENTIFIER, constraints);
        super.onSaveInstanceState(outState);
    }

    @Override
    @SuppressWarnings("unchecked")
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // If we get created for the first time we get our data from the intent
        Bundle data = savedInstanceState != null ? savedInstanceState : getArguments();
        constraints = (ArrayList<Constraint>) data.getSerializable(IDENTIFIER);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        setupList();

        if (savedInstanceState == null)
            setupFragments();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.constraint_list, null);
    }

    private void setupFragments() {
        FragmentTransaction ft = getFragmentManager().beginTransaction();
        for (int i = 0; i < constraints.size(); i++) {
            ft.add(i + 1, constraints.get(i).createFragment(i));
        }
        ft.commit();
    }

    private void setupList() {
        LinearLayout list = (LinearLayout) getView().findViewById(android.R.id.list);
        for (int i = 0; i < constraints.size(); i++) {
            FrameLayout frameLayout = new FrameLayout(getActivity());
            frameLayout.setId(i + 1);
            list.addView(frameLayout);
        }
    }

    public static ConstraintListFragment newInstance(ArrayList<Constraint> constraints) {
        ConstraintListFragment fragment = new ConstraintListFragment();
        Bundle args = new Bundle();
        args.putSerializable(IDENTIFIER, constraints);
        fragment.setArguments(args);
        return fragment;
    }

    public ArrayList<Constraint> getConstraints() {
        int size = constraints.size();
        constraints.clear();
        // Old references could not be valid anymore (e.g. Activity restart) so we update them
        for (int i = 0; i < size; i++) {
            ConstraintFragment f = ((ConstraintFragment) getFragmentManager().findFragmentById(i + 1));
            constraints.add(f.getConstraint());
        }
        return constraints;
    }
}