source: other-projects/tipple-android/trunk/src/org/greenstone/android/tipple/TippleLogFileBrowserIconAdapter.java@ 23977

/*
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Based on FileBrowserIconAdapter.java from mapsforge.org
 * 
 */
package org.greenstone.android.tipple;

import java.io.File;

import android.content.Context;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

/**
 * An adapter for the FileBrowser GridView.
 */
class TippleLogFileBrowserIconAdapter extends BaseAdapter 
{
    private Context context;
    private File currentFile;
    private File[] files;
    private boolean hasParentFolder;
    private TextView textView;

    /**
     * Create a new FileBrowserIconAdapter with the given context.
     * 
     * @param context
     *            the context of this adapter, through which new Views can be created.
     */
    TippleLogFileBrowserIconAdapter(Context context) {
        this.context = context;
    }

    @Override
    public int getCount() {
        if (this.files == null) {
            return 0;
        }
        return this.files.length;
    }

    @Override
    public Object getItem(int index) {
        return this.files[index];
    }

    @Override
    public long getItemId(int index) {
        return index;
    }

    @Override
    public View getView(int index, View convertView, ViewGroup parent) {
        if (convertView instanceof TextView) {
            // recycle the old view
            this.textView = (TextView) convertView;
        } else {
            // create a new view object
            this.textView = new TextView(this.context);
            this.textView.setLines(2);
            this.textView.setGravity(Gravity.CENTER_HORIZONTAL);
            this.textView.setPadding(5, 10, 5, 10);
        }

        if (index == 0 && this.hasParentFolder) {
            // the parent directory of the current folder
            this.textView.setCompoundDrawablesWithIntrinsicBounds(0, R.drawable.ic_menu_back,
                    0, 0);
            this.textView.setText("..");
        } else {
            this.currentFile = this.files[index];
            if (this.currentFile.isDirectory()) {
                this.textView.setCompoundDrawablesWithIntrinsicBounds(0,
                        R.drawable.ic_menu_archive, 0, 0);
            } else {
                this.textView.setCompoundDrawablesWithIntrinsicBounds(0,
                        R.drawable.ic_menu_mapmode, 0, 0);
            }
            this.textView.setText(this.currentFile.getName());
        }
        return this.textView;
    }

    /**
     * Call this method to change the data of the adapter.
     * 
     * @param newFiles
     *            the new files for this adapter.
     * @param newHasParentFolder
     *            true if the files array has a parent folder at index 0, false otherwise.
     */
    void updateFiles(File[] newFiles, boolean newHasParentFolder) {
        this.files = newFiles;
        this.hasParentFolder = newHasParentFolder;
    }
}