1/*
2 * Copyright (C) 2008 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.android.internal.widget;
18
19import android.content.Context;
20import android.content.res.TypedArray;
21import android.text.Layout;
22import android.util.AttributeSet;
23import android.util.TypedValue;
24import android.widget.TextView;
25
26/**
27 * Used by dialogs to change the font size and number of lines to try to fit
28 * the text to the available space.
29 */
30public class DialogTitle extends TextView {
31
32    public DialogTitle(Context context, AttributeSet attrs,
33            int defStyle) {
34        super(context, attrs, defStyle);
35    }
36
37    public DialogTitle(Context context, AttributeSet attrs) {
38        super(context, attrs);
39    }
40
41    public DialogTitle(Context context) {
42        super(context);
43    }
44
45    @Override
46    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
47        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
48
49        final Layout layout = getLayout();
50        if (layout != null) {
51            final int lineCount = layout.getLineCount();
52            if (lineCount > 0) {
53                final int ellipsisCount = layout.getEllipsisCount(lineCount - 1);
54                if (ellipsisCount > 0) {
55                    setSingleLine(false);
56                    setMaxLines(2);
57
58                    final TypedArray a = mContext.obtainStyledAttributes(null,
59                            android.R.styleable.TextAppearance, android.R.attr.textAppearanceMedium,
60                            android.R.style.TextAppearance_Medium);
61                    final int textSize = a.getDimensionPixelSize(
62                            android.R.styleable.TextAppearance_textSize, 0);
63                    if (textSize != 0) {
64                        // textSize is already expressed in pixels
65                        setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
66                    }
67                    a.recycle();
68
69                    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
70                }
71            }
72        }
73    }
74}
75