/ime/latinime/src/com/googlecode/eyesfree/inputmethod/latin/tutorial/SelectionEditText.java

 1/*
 2 * Copyright (C) 2011 Google Inc.
 3 *
 4 * Licensed under the Apache License, Version 2.0 (the "License");
 5 * you may not use this file except in compliance with the License.
 6 * You may obtain a copy of the License at
 7 *
 8 *      http://www.apache.org/licenses/LICENSE-2.0
 9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.googlecode.eyesfree.inputmethod.latin.tutorial;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.widget.EditText;
22
23/**
24 * This class extends the {@link EditText} widget by providing a listener
25 * interface for selection changes. See {@link SelectionListener}.
26 *
27 * @author alanv@google.com (Alan Viverette)
28 */
29public class SelectionEditText extends EditText {
30    private SelectionListener mSelectionListener = null;
31
32    private int mOldSelStart = 0;
33    private int mOldSelEnd = 0;
34
35    public SelectionEditText(Context context) {
36        super(context);
37    }
38
39    public SelectionEditText(Context context, AttributeSet attrs) {
40        super(context, attrs);
41    }
42
43    public SelectionEditText(Context context, AttributeSet attrs, int defStyle) {
44        super(context, attrs, defStyle);
45    }
46
47    public void setSelectionListener(SelectionListener selectionListener) {
48        mSelectionListener = selectionListener;
49    }
50
51    @Override
52    protected void onSelectionChanged(int selStart, int selEnd) {
53        super.onSelectionChanged(selStart, selEnd);
54
55        if (mSelectionListener != null) {
56            mSelectionListener.onSelectionChanged(this, mOldSelStart, mOldSelEnd, selStart, selEnd);
57        }
58
59        mOldSelStart = selStart;
60        mOldSelEnd = selEnd;
61    }
62
63    public static interface SelectionListener {
64        public void onSelectionChanged(SelectionEditText editText, int oldSelStart, int oldSelEnd,
65                int selStart, int selEnd);
66    }
67}