qr.cloud.qrpedia.SavedTextListFragment.java Source code

Introduction

Here is the source code for qr.cloud.qrpedia.SavedTextListFragment.java

Source

/*
 * Copyright (c) 2014 Simon Robinson
 *
 * 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 qr.cloud.qrpedia;

import qr.cloud.util.QRCloudDatabase;
import qr.cloud.util.QRCloudProvider;
import qr.cloud.util.QRCloudUtils;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.database.Cursor;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;

import com.actionbarsherlock.app.SherlockListFragment;

public class SavedTextListFragment extends SherlockListFragment implements LoaderManager.LoaderCallbacks<Cursor> {

    OnSavedTextSelectedListener mCallback;

    public interface OnSavedTextSelectedListener {
        public void onSavedTextSelected(long position);
    }

    private static final int MESSAGE_LIST_LOADER = 0x01;
    private SimpleCursorAdapter mCursorAdapter;

    private boolean mIsInDialog = false;

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

        // start loading content
        getLoaderManager().initLoader(MESSAGE_LIST_LOADER, null, this);
        String[] bindFrom = { QRCloudDatabase.COL_MESSAGE };
        int[] bindTo = { R.id.imported_text };
        mCursorAdapter = new SimpleCursorAdapter(getActivity(), R.layout.import_text_row, null, bindFrom, bindTo,
                CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
        setListAdapter(mCursorAdapter);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // make sure that the container activity has implemented the callback interface
        try {
            mCallback = (OnSavedTextSelectedListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(
                    activity.toString() + " must implement " + OnSavedTextSelectedListener.class.toString());
        }
    }

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

        // configure the list view
        ListView listView = getListView();
        QRCloudUtils.setListViewEmptyView(listView, getString(R.string.no_saved_messages), R.string.default_font,
                R.dimen.activity_horizontal_margin, R.dimen.activity_vertical_margin);
        listView.setSelector(R.drawable.message_row_selector); // override the default selector
        listView.setDivider(new ColorDrawable(this.getResources().getColor(R.color.list_divider)));
        listView.setDividerHeight(1);
        listView.setOnItemLongClickListener(mLongClickListener);
        if (mIsInDialog && Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
            // fix black background issue pre-honeycomb
            listView.setBackgroundColor(Color.WHITE);
        }
    }

    public void setIsInDialog(boolean isInDialog) {
        mIsInDialog = isInDialog; // for fixing pre-Honeycomb dialog display issue
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        CursorLoader cursorLoader = new CursorLoader(getActivity(), QRCloudProvider.CONTENT_URI_MESSAGES,
                QRCloudDatabase.PROJECTION_ID_MESSAGE, null, null, QRCloudDatabase.COL_DATE + " DESC");
        return cursorLoader;
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        mCursorAdapter.swapCursor(cursor);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        mCursorAdapter.swapCursor(null);
    }

    @Override
    public void onListItemClick(ListView list, View view, int position, long id) {
        mCallback.onSavedTextSelected(id);
    }

    private OnItemLongClickListener mLongClickListener = new OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, final long id) {
            AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
            builder.setTitle(R.string.clipping_options);
            builder.setItems(R.array.clipping_options_values, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    String chosenValue = getResources().getStringArray(R.array.clipping_options_values)[which];
                    if (chosenValue.equals(getString(R.string.btn_delete))) {
                        // delete the selected item
                        getActivity().getContentResolver().delete(
                                Uri.withAppendedPath(QRCloudProvider.CONTENT_URI_MESSAGES, String.valueOf(id)),
                                null, null);

                    }
                }
            });
            builder.show();
            return true;
        }
    };
}