/* Licence: williamsmobile.co.uk/licence.htm */

package mypackage;

import net.rim.device.api.system.KeypadListener;
import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
import java.io.*;
import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;

class TextPad extends UiApplication {
    public static void main(String[] args) {
        new TextPad().enterEventDispatcher();
    }

    TextPad() {
        pushScreen(new MyScreen());
    }
}

class MyScreen extends MainScreen {
    EditField textField;
    Font customFont;
    int tabWidth = 4;
    String path = "";

    MyScreen() {
        setTitle("TextPad 1.0 - williamsmobile.co.uk");

        addMenuItem(new MenuItem("Save", 0, 0) {
            public void run() {
                save();
            }
        });
        addMenuItem(new MenuItem("Save As", 0, 0) {
            public void run() {
                saveAs();
            }
        });
        addMenuItem(new MenuItem("Open", 0, 0) {
            public void run() {
                open();
            }
        });
        addMenuItem(new MenuItem("Tab Width", 0, 0) {
            public void run() {
                createTabDlg();
            }
        });

        textField = new EditField();
        customFont = createFont();
        textField.setFont(customFont);
        add(textField);
    }

    private void createTabDlg() {
        int selectedTabWidth = Dialog.ask("Set width of tab inserted by Alt+Space:", new String[]{"2", "4", "8"}, 1);
        setTabWidth(Integer.parseInt(new String[]{"2", "4", "8"}[selectedTabWidth]));
    }

    private Font createFont() {
        Font customFont = null;
        try {
            FontFamily fontFamily = FontFamily.forName("Andale Mono");
            customFont = fontFamily.getFont(Font.PLAIN, 18);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        return customFont;
    }

    public boolean keyChar(char key, int status, int time) {
        if ((status & KeypadListener.STATUS_ALT) != 0 && key == ' ') {
            String currentText = textField.getText();
            StringBuffer newText = new StringBuffer(currentText);

            for (int i = 0; i < tabWidth; i++) {
                newText.append(' ');
            }

            textField.setText(newText.toString());
            return true;
        }
        return super.keyChar(key, status, time);
    }

    public void saveAs() {
        Dialog saveDlg = new Dialog(Dialog.OK, "Save", 0, null, 0);
        EditField nameField = new EditField("Name: ", "");
        EditField savePathField = new EditField("Path: ", "file:///SDCard/BlackBerry/documents/");
        ((DialogFieldManager) saveDlg.getDelegate()).getCustomManager().add(nameField);
        ((DialogFieldManager) saveDlg.getDelegate()).getCustomManager().add(savePathField);
        saveDlg.doModal();

        path = savePathField.getText() + nameField.getText();

        save();
    }

    public void save() {
        if (path.equals("")) {
            Dialog.alert("Use 'Save As' or 'Open' first");
        } else {
            FileConnection fileConnection = null;
            OutputStream outputStream = null;
            String text = textField.getText();

            try {
                fileConnection = (FileConnection) Connector.open(path, Connector.READ_WRITE);
                if (!fileConnection.exists()) {
                    fileConnection.create();
                } else {
                    fileConnection.truncate(0);
                }

                outputStream = fileConnection.openOutputStream();
                outputStream.write(text.getBytes());
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (outputStream != null) outputStream.close();
                    if (fileConnection != null) fileConnection.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    public void open() {
        Dialog openDlg = new Dialog(Dialog.OK, "Open", 0, null, 0);
        EditField openPathField = new EditField("Path: ", "file:///SDCard/BlackBerry/documents/");
        ((DialogFieldManager) openDlg.getDelegate()).getCustomManager().add(openPathField);
        openDlg.doModal();

        path = openPathField.getText();

        FileConnection fileConnection = null;
        InputStream inputStream = null;

        try {
            fileConnection = (FileConnection) Connector.open(path, Connector.READ);
            if (fileConnection.exists()) {
                inputStream = fileConnection.openInputStream();
                byte[] data = new byte[(int) fileConnection.fileSize()];
                inputStream.read(data);
                String fileContents = new String(data);
                textField.setText(fileContents);
            } else {
                Dialog.alert("File does not exist");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (inputStream != null) inputStream.close();
                if (fileConnection != null) fileConnection.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void setTabWidth(int newTabWidth) {
        tabWidth = newTabWidth;
    }

    public boolean onSavePrompt() {
        return true;
    }
}