com.ultramegasoft.flavordex2.dialog.ImportDialog.java Source code

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Here is the source code for com.ultramegasoft.flavordex2.dialog.ImportDialog.java

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/*
 * The MIT License (MIT)
 * Copyright  2016 Steve Guidetti
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the Software?), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED AS IS?, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.ultramegasoft.flavordex2.dialog;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.AppCompatCheckBox;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.FrameLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.ultramegasoft.flavordex2.R;

/**
 * Base for Dialogs for importing journal entries from external sources.
 *
 * @author Steve Guidetti
 */
public abstract class ImportDialog extends DialogFragment {
    /**
     * Views from the layout
     */
    private FrameLayout mListContainer;
    private ListView mListView;
    private ProgressBar mProgressBar;
    AppCompatCheckBox mIncludeImages;

    @NonNull
    @Override
    @SuppressLint("InflateParams")
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Context context = getContext();
        if (context == null) {
            return super.onCreateDialog(savedInstanceState);
        }

        final View root = LayoutInflater.from(context).inflate(R.layout.dialog_import, null);

        mListContainer = root.findViewById(R.id.list_container);

        mListView = root.findViewById(R.id.list);
        mListView.setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE);
        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                invalidateButtons();
            }
        });

        final TextView emptyView = root.findViewById(R.id.empty);
        emptyView.setText(R.string.message_import_no_data);
        mListView.setEmptyView(emptyView);

        mProgressBar = root.findViewById(R.id.progress);

        mIncludeImages = root.findViewById(R.id.include_images);

        return new AlertDialog.Builder(context).setTitle(R.string.title_import).setIcon(R.drawable.ic_import)
                .setView(root).setPositiveButton(R.string.button_import, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        insertSelected();
                    }
                }).setNegativeButton(R.string.button_cancel, null).create();
    }

    @Override
    public void onStart() {
        super.onStart();
        invalidateButtons();
    }

    /**
     * Insert the selected entries into the database.
     */
    protected abstract void insertSelected();

    /**
     * Update the status of the dialog buttons.
     */
    final void invalidateButtons() {
        final AlertDialog dialog = (AlertDialog) getDialog();
        if (dialog != null) {
            final boolean itemSelected = mListView.getCheckedItemCount() > 0;
            dialog.getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(itemSelected);
        }
    }

    /**
     * Set whether to show the list or the loading indicator.
     *
     * @param shown Whether to show the list
     */
    void setListShown(boolean shown) {
        if (shown) {
            mProgressBar.setVisibility(View.GONE);
            mListContainer.setVisibility(View.VISIBLE);
        } else {
            mListContainer.setVisibility(View.GONE);
            mProgressBar.setVisibility(View.VISIBLE);
        }
    }

    /**
     * Get the ListView from the dialog.
     *
     * @return The ListView
     */
    @NonNull
    ListView getListView() {
        return mListView;
    }

    /**
     * Set the ListAdapter backing the list.
     *
     * @param adapter A ListAdapter
     */
    void setListAdapter(@Nullable ListAdapter adapter) {
        mListView.setAdapter(adapter);
    }

    /**
     * Get the ListAdapter backing the list.
     *
     * @return The ListAdapter
     */
    @Nullable
    ListAdapter getListAdapter() {
        return mListView.getAdapter();
    }
}