org.totschnig.myexpenses.fragment.MethodList.java Source code

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Here is the source code for org.totschnig.myexpenses.fragment.MethodList.java

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/*   This file is part of My Expenses.
 *   My Expenses is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   My Expenses 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with My Expenses.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.totschnig.myexpenses.fragment;

import java.util.ArrayList;

import org.totschnig.myexpenses.R;
import org.totschnig.myexpenses.activity.MethodEdit;
import org.totschnig.myexpenses.activity.ProtectedFragmentActivity;
import org.totschnig.myexpenses.model.PaymentMethod;
import org.totschnig.myexpenses.provider.DatabaseConstants;
import org.totschnig.myexpenses.provider.TransactionProvider;
import org.totschnig.myexpenses.task.TaskExecutionFragment;
import org.totschnig.myexpenses.ui.SimpleCursorAdapter;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.database.Cursor;
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.util.SparseBooleanArray;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;

public class MethodList extends ContextualActionBarFragment implements LoaderManager.LoaderCallbacks<Cursor> {
    SimpleCursorAdapter mAdapter;
    private Cursor mMethodsCursor;

    @SuppressLint("InlinedApi")
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.methods_list, container, false);
        final ListView lv = (ListView) v.findViewById(R.id.list);
        // Create an array to specify the fields we want to display in the list
        String[] from = new String[] { DatabaseConstants.KEY_LABEL };
        // and an array of the fields we want to bind those fields to 
        int[] to = new int[] { android.R.id.text1 };
        // Now create a simple cursor adapter and set it to display
        mAdapter = new SimpleCursorAdapter(getActivity(),
                Build.VERSION.SDK_INT >= 11 ? android.R.layout.simple_list_item_activated_1
                        : android.R.layout.simple_list_item_1,
                null, from, to, 0);
        getLoaderManager().initLoader(0, null, this);
        lv.setAdapter(mAdapter);
        lv.setEmptyView(v.findViewById(R.id.empty));
        registerForContextualActionBar(lv);
        return v;
    }

    @Override
    public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
        CursorLoader cursorLoader = new CursorLoader(getActivity(), TransactionProvider.METHODS_URI, null, null,
                null, null);
        return cursorLoader;
    }

    @Override
    public void onLoadFinished(Loader<Cursor> arg0, Cursor c) {
        mMethodsCursor = c;
        mAdapter.swapCursor(c);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {
        mMethodsCursor = null;
        mAdapter.swapCursor(null);
    }

    public boolean dispatchCommandSingle(int command, ContextMenu.ContextMenuInfo info) {
        AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) info;
        switch (command) {
        case R.id.EDIT_COMMAND:
            Intent i = new Intent(getActivity(), MethodEdit.class);
            i.putExtra(DatabaseConstants.KEY_ROWID, menuInfo.id);
            startActivity(i);
            break;
        }
        return super.dispatchCommandSingle(command, info);
    }

    @Override
    public boolean dispatchCommandMultiple(int command, SparseBooleanArray positions, Long[] itemIds) {
        switch (command) {
        case R.id.DELETE_COMMAND:
            int columnIndexMappedTransactions = mMethodsCursor
                    .getColumnIndex(DatabaseConstants.KEY_MAPPED_TRANSACTIONS);
            int columnIndexMappedTemplates = mMethodsCursor.getColumnIndex(DatabaseConstants.KEY_MAPPED_TEMPLATES);
            int columnIndexRowId = mMethodsCursor.getColumnIndex(DatabaseConstants.KEY_ROWID);
            int mappedTransactionsCount = 0, mappedTemplatesCount = 0;
            ArrayList<Long> idList = new ArrayList<>();
            for (int i = 0; i < positions.size(); i++) {
                if (positions.valueAt(i)) {
                    boolean deletable = true;
                    mMethodsCursor.moveToPosition(positions.keyAt(i));
                    if (mMethodsCursor.getInt(columnIndexMappedTransactions) > 0) {
                        mappedTransactionsCount++;
                        deletable = false;
                    }
                    if (mMethodsCursor.getInt(columnIndexMappedTemplates) > 0) {
                        mappedTemplatesCount++;
                        deletable = false;
                    }
                    if (deletable) {
                        idList.add(mMethodsCursor.getLong(columnIndexRowId));
                    }
                }
            }
            if (!idList.isEmpty()) {
                ((ProtectedFragmentActivity) getActivity()).startTaskExecution(
                        TaskExecutionFragment.TASK_DELETE_PAYMENT_METHODS, idList.toArray(new Long[idList.size()]),
                        null, R.string.progress_dialog_deleting);
                return true;
            }
            if (mappedTransactionsCount > 0 || mappedTemplatesCount > 0) {
                String message = "";
                if (mappedTransactionsCount > 0)
                    message += getResources().getQuantityString(R.plurals.not_deletable_mapped_transactions,
                            mappedTransactionsCount, mappedTransactionsCount);
                if (mappedTemplatesCount > 0)
                    message += getResources().getQuantityString(R.plurals.not_deletable_mapped_templates,
                            mappedTemplatesCount, mappedTemplatesCount);
                Toast.makeText(getActivity(), message, Toast.LENGTH_LONG).show();
            }
            break;
        }
        return super.dispatchCommandMultiple(command, positions, itemIds);
    }
}