1/*
2 * Copyright (C) 2012 Google Inc.
3 * Licensed to The Android Open Source Project.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.android.mail.browse;
19
20import android.content.Context;
21import android.content.res.Resources;
22import android.text.Layout;
23import android.util.AttributeSet;
24import android.widget.TextView;
25
26import com.android.mail.R;
27
28/**
29 * A TextView that knows the widest that any of its containing
30 * {@link FolderSpan}s can be. They cannot exceed the TextView line width, or
31 * else {@link Layout} will split up the spans in strange places.
32 */
33public class FolderSpanTextView extends TextView implements FolderSpan.FolderSpanDimensions {
34
35    private final int mFolderPadding;
36    private final int mFolderPaddingExtraWidth;
37    private final int mFolderPaddingBefore;
38    private final int mFolderPaddingAbove;
39
40    private int mMaxSpanWidth;
41
42    public FolderSpanTextView(Context context) {
43        this(context, null);
44    }
45
46    public FolderSpanTextView(Context context, AttributeSet attrs) {
47        super(context, attrs);
48
49        Resources r = getResources();
50        mFolderPadding = r.getDimensionPixelOffset(R.dimen.conversation_folder_padding);
51        mFolderPaddingExtraWidth = r.getDimensionPixelOffset(
52                R.dimen.conversation_folder_padding_extra_width);
53        mFolderPaddingBefore = r.getDimensionPixelOffset(
54                R.dimen.conversation_folder_padding_before);
55        mFolderPaddingAbove = r.getDimensionPixelOffset(R.dimen.conversation_folder_padding_above);
56    }
57
58    @Override
59    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
60        mMaxSpanWidth = MeasureSpec.getSize(widthMeasureSpec) - getTotalPaddingLeft()
61                - getTotalPaddingRight();
62
63        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
64    }
65
66    @Override
67    public int getPadding() {
68        return mFolderPadding;
69    }
70
71    @Override
72    public int getPaddingExtraWidth() {
73        return mFolderPaddingExtraWidth;
74    }
75
76    @Override
77    public int getPaddingBefore() {
78        return mFolderPaddingBefore;
79    }
80
81    @Override
82    public int getPaddingAbove() {
83        return mFolderPaddingAbove;
84    }
85
86    @Override
87    public int getMaxWidth() {
88        return mMaxSpanWidth;
89    }
90}
91