EnterTextDialog.java :  » Client » android-vnc-viewer » android » androidVNC » Android Open Source

/**
 * Copyright (C) 2009 Michael A. MacDonald
 */
package android.androidVNC;

import java.io.IOException;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;

/**
 * @author Michael A. MacDonald
 *
 */
class EnterTextDialog extends Dialog {
  
  private VncCanvasActivity _canvasActivity;
  
  private EditText _textEnterText;
  
  private ArrayList<String> _history;
  
  private int _historyIndex;
  
  private ImageButton _buttonNextEntry;
  private ImageButton _buttonPreviousEntry;

  public EnterTextDialog(Context context) {
    super(context);
    setOwnerActivity((Activity)context);
    _canvasActivity = (VncCanvasActivity)context;
    _history = new ArrayList<String>();
    _historyIndex = 0;
  }
  
  private String saveText(boolean wasSent)
  {
    CharSequence cs = _textEnterText.getText();
    if (cs.length()==0)
      return "";
    String s = cs.toString();
    if (wasSent || _historyIndex>=_history.size() || ! s.equals(_history.get(_historyIndex)))
    {
      _history.add(s);
    }
    return s;
  }

  /* (non-Javadoc)
   * @see android.app.Dialog#onCreate(android.os.Bundle)
   */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.entertext);
    setTitle(R.string.enter_text_title);
    _textEnterText = (EditText)findViewById(R.id.textEnterText);
    _buttonNextEntry = (ImageButton)findViewById(R.id.buttonNextEntry);
    _buttonNextEntry.setOnClickListener(new View.OnClickListener() {

      /* (non-Javadoc)
       * @see android.view.View.OnClickListener#onClick(android.view.View)
       */
      @Override
      public void onClick(View v) {
        int oldSize = _history.size();
        if (_historyIndex < oldSize)
        {
          saveText(false);
          _historyIndex++;
          if (_history.size()>oldSize && _historyIndex==oldSize)
            _historyIndex++;
          if (_historyIndex < _history.size())
          {
              _textEnterText.setText(_history.get(_historyIndex));
          }
          else
          {
            _textEnterText.setText("");
          }
        }
        updateButtons();
      }
      
    });
    _buttonPreviousEntry = (ImageButton)findViewById(R.id.buttonPreviousEntry);
    _buttonPreviousEntry.setOnClickListener(new View.OnClickListener() {

      /* (non-Javadoc)
       * @see android.view.View.OnClickListener#onClick(android.view.View)
       */
      @Override
      public void onClick(View v) {
        if (_historyIndex > 0)
        {
          saveText(false);
          _historyIndex--;
            _textEnterText.setText(_history.get(_historyIndex));
        }
        updateButtons();
      }
      
    });
    ((Button)findViewById(R.id.buttonSendText)).setOnClickListener(new View.OnClickListener() {

      /* (non-Javadoc)
       * @see android.view.View.OnClickListener#onClick(android.view.View)
       */
      @Override
      public void onClick(View v) {
        RfbProto rfb = _canvasActivity.vncCanvas.rfb;
        String s = saveText(true);
        int l = s.length();
        for (int i = 0; i<l; i++)
        {
          char c = s.charAt(i);
          int meta = 0;
          int keysym = c;
          if (Character.isISOControl(c))
          {
            if (c=='\n')
              keysym = MetaKeyBean.keysByKeyCode.get(KeyEvent.KEYCODE_ENTER).keySym;
            else
              continue;
          }
          try
          {
            rfb.writeKeyEvent(keysym, meta, true);
            rfb.writeKeyEvent(keysym, meta, false);
          }
          catch (IOException ioe)
          {
            // TODO: log this
          }
        }
        _textEnterText.setText("");
        _historyIndex = _history.size();
        updateButtons();
        dismiss();
      }
      
    });
    
    updateButtons();
  }

  private void updateButtons()
  {
    _buttonPreviousEntry.setEnabled(_historyIndex > 0);
    _buttonNextEntry.setEnabled(_historyIndex <_history.size());
  }
  
  /* (non-Javadoc)
   * @see android.app.Dialog#onStart()
   */
  @Override
  protected void onStart() {
    super.onStart();
    _textEnterText.requestFocus();
  }
}