TextViewBinder.java :  » UnTagged » directmodelling » com » directmodelling » android » binding » Android Open Source

/*******************************************************************************
 * Copyright (c) 2010 Guus C. Bloemsma.
 *
 * 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 com.directmodelling.android.binding;

import com.directmodelling.api.Converter;
import com.directmodelling.api.Updates.Receiver;
import com.directmodelling.api.Value.Mutable;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.widget.TextView;

public final class TextViewBinder<T> extends Binder<TextView, T, String>
  implements
  Receiver,
  TextWatcher,
  OnFocusChangeListener {

  public TextViewBinder(
    final Mutable<T> m,
    final TextView s,
    final Converter<T, String> toInt,
    final Converter<String, T> fromInt) {
    super(m, s, toInt, fromInt);
    s.addTextChangedListener(this);
    s.setOnFocusChangeListener(this);
  }

  @Override
  public void afterTextChanged(final Editable e) {
    takeValueFromView();
  }

  @Override
  public void beforeTextChanged(final CharSequence s, final int start, final int count, final int after) {
    // ignore
  }

  @Override
  public void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
    // ignore
  }

  @Override
  protected void setViewValue(final String v, boolean force) {
    if (force || !view.hasFocus())
      view.setText(v);
  }

  @Override
  public void onFocusChange(final View v, final boolean hasFocus) {
    if (!hasFocus && v == view) {
      takeValueFromView();
    }
  }

  @Override
  protected String getViewValue() {
    return view.getText().toString();
  }
}