com.lkunic.lib.activityaddonlib.twopane.fragments.ItemDetailFragment.java Source code

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Here is the source code for com.lkunic.lib.activityaddonlib.twopane.fragments.ItemDetailFragment.java

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/**********************************************************************
 * Copyright (c) 2015 Luka Kunic, "ItemDetailFragment.java"
 * 
 * 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.
 *
 * Author: lkunic
 * Last modified: 08/02/2015
 **********************************************************************/
package com.lkunic.lib.activityaddonlib.twopane.fragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;

/**
 * A fragment representing a single item detail screen.
 */
public abstract class ItemDetailFragment extends Fragment {
    // The fragment argument representing the item ID that this fragment displays.
    public static final String ARG_ITEM_ID = "item_id";

    /**
     * Id of the item that was selected in the list.
     */
    private long mItemId;

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

        if (savedInstanceState != null && savedInstanceState.containsKey(ARG_ITEM_ID)) {
            mItemId = savedInstanceState.getLong(ARG_ITEM_ID);
        }
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);

        outState.putLong(ARG_ITEM_ID, mItemId);
    }

    /**
     * Set the id of the item that will be displayed in this fragment.
     */
    public void setItemId(long id) {
        mItemId = id;
    }

    /**
     * Refresh the fragment content. Assumes a new item id was set.
     */
    public void refreshContent() {
        View view = getView();

        if (view != null) {
            setupContent(view);
        }
    }

    /**
     * The item Id that was passed in by the list activity.
     * @return
     */
    protected long getItemId() {
        return mItemId;
    }

    /**************************************************************************************************/
    /**** Abstract methods ****/
    /**************************************************************************************************/

    /**
     * Use to get the item data from the database.
     */
    protected abstract void getItemData();

    /**
     * Setup the fragment content.
     */
    protected abstract void setupContent(View view);
}