TextEditor.java revision 3e190ede751474c7e1b87b34e36354c0ef9e8af4 
1/*
2 * Copyright 2012 The Android Open Source Project
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.android.notificationstudio.editor;
18
19import android.text.Editable;
20import android.text.InputType;
21import android.text.TextWatcher;
22import android.view.View;
23import android.widget.EditText;
24
25import com.android.notificationstudio.R;
26import com.android.notificationstudio.editor.Editors.Editor;
27import com.android.notificationstudio.model.EditableItem;
28
29public class TextEditor implements Editor {
30
31    public Runnable bindEditor(View v, final EditableItem item, final Runnable afterChange) {
32        final EditText textEditor = (EditText) v.findViewById(R.id.text_editor);
33        textEditor.setVisibility(View.VISIBLE);
34        textEditor.setInputType(getInputType());
35        Runnable updateEditText = new Runnable() {
36            public void run() {
37                textEditor.setText(item.getValue() == null ? "" : item.getValue().toString());
38            }};
39        if (item.hasValue())
40            updateEditText.run();
41        textEditor.addTextChangedListener(new TextWatcher() {
42            public void afterTextChanged(Editable s) {
43                Object newVal = parseValue(s.length() == 0 ? null : s.toString());
44                if (equal(newVal, item.getValue()))
45                    return;
46                item.setValue(newVal);
47                afterChange.run();
48            }
49
50            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
51                // noop
52            }
53
54            public void onTextChanged(CharSequence s, int start, int before, int count) {
55                // noop
56            }
57        });
58        return updateEditText;
59    }
60
61    protected int getInputType() {
62        return InputType.TYPE_CLASS_TEXT;
63    }
64
65    protected Object parseValue(String str) {
66        return str;
67    }
68
69    private static boolean equal(Object a,  Object b) {
70        return a == b || (a != null && a.equals(b));
71    }
72
73}