it.polimi.spf.app.fragments.profile.ProfileFieldsFragment.java Source code

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Here is the source code for it.polimi.spf.app.fragments.profile.ProfileFieldsFragment.java

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/* 
 * Copyright 2014 Jacopo Aliprandi, Dario Archetti
 * Copyright 2015 Stefano Cappa
 *
 * This file is part of SPF.
 *
 * SPF is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * SPF is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with SPF.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package it.polimi.spf.app.fragments.profile;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

import it.polimi.spf.app.R;
import it.polimi.spf.app.fragments.profile.ProfileFragment.Mode;
import it.polimi.spf.shared.model.ProfileField;

/**
 * Fragment that displays a list of {@link ProfileField} together with their
 * values. The {@link View}s used to display the values are obtained by the
 * parent fragment, intended to be {@link ProfileFragment}, with a call to
 * {@link ProfileFragment#createViewFor(ProfileField, ViewGroup)}. The
 * possibility of editing the values of fields depend on the {@link Mode} of the
 * parent.
 * <p/>
 * Instances of {@link ProfileFieldsFragment} can be created using {@link
 * ProfileFieldsFragment#new}
 *
 * @author darioarchetti
 */
public class ProfileFieldsFragment extends Fragment {

    /**
     * Key for the list of fields to show that should be put in the arguments
     * passed to this fragment.
     */
    private static final String EXTRA_FIELDS_TO_SHOW = "fields";

    /**
     * Creates a new instance of {@link ProfileFieldsFragment} to show the given
     * list of profile fields.
     *
     * @param fieldsToShow - the fields to show;
     * @return an instance of {@link ProfileFieldsFragment};
     */
    public static ProfileFieldsFragment newInstance(ProfileField<?>[] fieldsToShow) {
        if (fieldsToShow == null) {
            throw new NullPointerException();
        }

        Bundle b = new Bundle();
        b.putStringArray(EXTRA_FIELDS_TO_SHOW, ProfileField.toIdentifierList(fieldsToShow));
        ProfileFieldsFragment instance = new ProfileFieldsFragment();
        instance.setArguments(b);
        return instance;
    }

    private ProfileField<?>[] mFieldsToShow;
    private LinearLayout mViewContainer;
    private ProfileFragment mParent;

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

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

        Bundle b = savedInstanceState == null ? getArguments() : savedInstanceState;

        if (b == null) {
            throw new IllegalArgumentException("No bundle to read data from");
        }

        mFieldsToShow = ProfileField.fromIdentifierList(b.getStringArray(EXTRA_FIELDS_TO_SHOW));
        mViewContainer = (LinearLayout) getView().findViewById(R.id.profileedit_field_container);
        mParent = (ProfileFragment) getParentFragment();
        onRefresh();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putStringArray(EXTRA_FIELDS_TO_SHOW, ProfileField.toIdentifierList(mFieldsToShow));
    }

    /**
     * Refreshes the values of displayed fields.
     */
    public void onRefresh() {
        mViewContainer.removeAllViews();
        for (ProfileField<?> field : mFieldsToShow) {
            View child = mParent.createViewFor(field, mViewContainer);
            mViewContainer.addView(child);
        }
    }
}