org.ecmdroid.fragments.CellEditorDialogFragment.java Source code

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Here is the source code for org.ecmdroid.fragments.CellEditorDialogFragment.java

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/*
 EcmDroid - Android Diagnostic Tool for Buell Motorcycles
 Copyright (C) 2013 by Michel Marti
    
 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/>.
 */
package org.ecmdroid.fragments;

import org.ecmdroid.R;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.EditText;
import android.widget.TextView;

/**
 * Simple Editor dialog for editing a single byte value
 */
public class CellEditorDialogFragment extends DialogFragment
        implements android.view.View.OnClickListener, OnKeyListener {
    private static final String OFFSET = "offset";
    private static final String VALUE = "value";

    private CellEditorDialogListener listener;

    /**
     * Implement this interface to get notified about the editors change
     */
    public interface CellEditorDialogListener {
        public void onCellValueChanged(int pos, byte value);
    }

    /**
     * Construct a new Editor Dialog Fragment
     * @param offset position of the byte to edit
     * @param value the byte value to edit
     */
    public static CellEditorDialogFragment newInstance(int offset, byte value) {
        CellEditorDialogFragment dialog = new CellEditorDialogFragment();
        Bundle args = new Bundle();
        args.putByte(VALUE, value);
        args.putInt(OFFSET, offset);
        dialog.setArguments(args);
        return dialog;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle(R.string.edit_cell_value);
        LayoutInflater inflater = getActivity().getLayoutInflater();
        View editor = inflater.inflate(R.layout.cell_editor, null);
        editor.findViewById(R.id.b_d2).setOnClickListener(this);
        editor.findViewById(R.id.b_t2).setOnClickListener(this);
        editor.findViewById(R.id.b_m16).setOnClickListener(this);
        editor.findViewById(R.id.b_p16).setOnClickListener(this);
        editor.findViewById(R.id.b_zero).setOnClickListener(this);
        editor.findViewById(R.id.b_ff).setOnClickListener(this);
        EditText et = (EditText) editor.findViewById(R.id.editCellValue);
        et.setOnKeyListener(this);
        builder.setView(editor);
        updateEditor(editor, true);
        builder.setPositiveButton(R.string.set, new OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                if (listener != null) {
                    listener.onCellValueChanged(getArguments().getInt(OFFSET), getArguments().getByte(VALUE));
                }
            }
        });
        builder.setNegativeButton(android.R.string.cancel, null);
        return builder.create();
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (activity instanceof CellEditorDialogListener) {
            listener = (CellEditorDialogListener) activity;
        }
    }

    /**
     * Handle button clicks
     */
    public void onClick(View v) {
        int value = getArguments().getByte(VALUE) & 0xff;
        switch (v.getId()) {
        case R.id.b_d2:
            value >>= 1;
            break;
        case R.id.b_t2:
            value <<= 1;
            break;
        case R.id.b_ff:
            value = 0xFF;
            break;
        case R.id.b_zero:
            value = 0;
            break;
        case R.id.b_m16:
            value -= 16;
            break;
        case R.id.b_p16:
            value += 16;
            break;
        }
        value = Math.max(0, Math.min(255, value));
        getArguments().putByte(VALUE, (byte) value);
        updateEditor(v.getRootView(), true);
    }

    public boolean onKey(View v, int keyCode, KeyEvent event) {
        EditText te = (EditText) v;
        try {
            String input = te.getText().toString();
            int value = Integer.valueOf(input.length() == 0 ? "0" : input).intValue();
            getArguments().putByte(VALUE, (byte) value);
            updateEditor(v.getRootView(), false);
        } catch (NumberFormatException nfe) {
        }
        return false;
    }

    private void updateEditor(View editor, boolean updateText) {
        byte value = getArguments().getByte(VALUE);
        TextView tv = (TextView) editor.findViewById(R.id.textCellValue);
        if (updateText) {
            EditText cv = (EditText) editor.findViewById(R.id.editCellValue);
            cv.setText(Integer.toString(value & 0xFF));
        }
        tv.setText(String.format("[0x%02X]", value & 0xFF));
    }
}