com.pindroid.fragment.BrowseTagsFragment.java Source code

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Here is the source code for com.pindroid.fragment.BrowseTagsFragment.java

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/*
 * PinDroid - http://code.google.com/p/PinDroid/
 *
 * Copyright (C) 2010 Matt Schmidt
 *
 * PinDroid 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.
 *
 * PinDroid 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 PinDroid; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
package com.pindroid.fragment;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;

import com.pindroid.R;
import com.pindroid.platform.TagManager;
import com.pindroid.providers.TagContent.Tag;

public class BrowseTagsFragment extends ListFragment
        implements LoaderManager.LoaderCallbacks<Cursor>, PindroidFragment {

    private String sortfield = Tag.Name + " ASC";
    private SimpleCursorAdapter mAdapter;

    private String username = null;
    private String query = null;

    private OnTagSelectedListener tagSelectedListener;
    private OnItemClickListener clickListener;

    public interface OnTagSelectedListener {
        public void onTagSelected(String tag);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        clickListener = viewListener;
        setRetainInstance(true);
    }

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

        mAdapter = new SimpleCursorAdapter(this.getActivity(), R.layout.tag_view, null,
                new String[] { Tag.Name, Tag.Count }, new int[] { R.id.tag_name, R.id.tag_count }, 0);

        setListAdapter(mAdapter);

        getLoaderManager().initLoader(0, null, this);

        ListView lv = getListView();
        lv.setTextFilterEnabled(true);
        lv.setFastScrollEnabled(true);
        lv.setOnItemClickListener(clickListener);

        lv.setItemsCanFocus(false);
        lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getAccount() {
        return username;
    }

    public void setQuery(String query) {
        this.query = query;
    }

    public void refresh() {
        try {
            getLoaderManager().restartLoader(0, null, this);
        } catch (Exception e) {
        }
    }

    private OnItemClickListener viewListener = new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String tagName = ((TextView) view.findViewById(R.id.tag_name)).getText().toString();

            tagSelectedListener.onTagSelected(tagName);
        }
    };

    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        if (username != null) {
            if (query != null) {
                return TagManager.SearchTags(query, username, this.getActivity());
            } else {
                return TagManager.GetTags(username, sortfield, this.getActivity());
            }
        } else
            return null;
    }

    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        mAdapter.swapCursor(data);
    }

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

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            tagSelectedListener = (OnTagSelectedListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement OnTagSelectedListener");
        }
    }
}