summaryrefslogtreecommitdiffstats
path: root/core/java/android/widget/SimpleMonthAdapter.java
blob: 24ebb2cd7e664b3a00bf68fc08625c29a6d32dae (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget;

import com.android.internal.R;

import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SimpleMonthView.OnDayClickListener;

import java.util.Calendar;

/**
 * An adapter for a list of {@link android.widget.SimpleMonthView} items.
 */
class SimpleMonthAdapter extends BaseAdapter {
    private final Calendar mMinDate = Calendar.getInstance();
    private final Calendar mMaxDate = Calendar.getInstance();

    private final Context mContext;

    private Calendar mSelectedDay = Calendar.getInstance();
    private ColorStateList mCalendarTextColors = ColorStateList.valueOf(Color.BLACK);
    private OnDaySelectedListener mOnDaySelectedListener;

    private int mFirstDayOfWeek;

    public SimpleMonthAdapter(Context context) {
        mContext = context;
    }

    public void setRange(Calendar min, Calendar max) {
        mMinDate.setTimeInMillis(min.getTimeInMillis());
        mMaxDate.setTimeInMillis(max.getTimeInMillis());

        notifyDataSetInvalidated();
    }

    public void setFirstDayOfWeek(int firstDayOfWeek) {
        mFirstDayOfWeek = firstDayOfWeek;

        notifyDataSetInvalidated();
    }

    public int getFirstDayOfWeek() {
        return mFirstDayOfWeek;
    }

    /**
     * Updates the selected day and related parameters.
     *
     * @param day The day to highlight
     */
    public void setSelectedDay(Calendar day) {
        mSelectedDay = day;

        notifyDataSetChanged();
    }

    /**
     * Sets the listener to call when the user selects a day.
     *
     * @param listener The listener to call.
     */
    public void setOnDaySelectedListener(OnDaySelectedListener listener) {
        mOnDaySelectedListener = listener;
    }

    void setCalendarTextColor(ColorStateList colors) {
        mCalendarTextColors = colors;
    }

    /**
     * Sets the text color, size, style, hint color, and highlight color from
     * the specified TextAppearance resource. This is mostly copied from
     * {@link TextView#setTextAppearance(Context, int)}.
     */
    void setCalendarTextAppearance(int resId) {
        final TypedArray a = mContext.obtainStyledAttributes(resId, R.styleable.TextAppearance);

        final ColorStateList textColor = a.getColorStateList(R.styleable.TextAppearance_textColor);
        if (textColor != null) {
            mCalendarTextColors = textColor;
        }

        // TODO: Support font size, etc.

        a.recycle();
    }

    @Override
    public int getCount() {
        final int diffYear = mMaxDate.get(Calendar.YEAR) - mMinDate.get(Calendar.YEAR);
        final int diffMonth = mMaxDate.get(Calendar.MONTH) - mMinDate.get(Calendar.MONTH);
        return diffMonth + 12 * diffYear + 1;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public boolean hasStableIds() {
        return true;
    }

    @SuppressWarnings("unchecked")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final SimpleMonthView v;
        if (convertView != null) {
            v = (SimpleMonthView) convertView;
        } else {
            v = new SimpleMonthView(mContext);

            // Set up the new view
            final AbsListView.LayoutParams params = new AbsListView.LayoutParams(
                    AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.MATCH_PARENT);
            v.setLayoutParams(params);
            v.setClickable(true);
            v.setOnDayClickListener(mOnDayClickListener);

            if (mCalendarTextColors != null) {
                v.setTextColor(mCalendarTextColors);
            }
        }

        final int minMonth = mMinDate.get(Calendar.MONTH);
        final int minYear = mMinDate.get(Calendar.YEAR);
        final int currentMonth = position + minMonth;
        final int month = currentMonth % 12;
        final int year = currentMonth / 12 + minYear;
        final int selectedDay;
        if (isSelectedDayInMonth(year, month)) {
            selectedDay = mSelectedDay.get(Calendar.DAY_OF_MONTH);
        } else {
            selectedDay = -1;
        }

        // Invokes requestLayout() to ensure that the recycled view is set with the appropriate
        // height/number of weeks before being displayed.
        v.reuse();

        final int enabledDayRangeStart;
        if (minMonth == month && minYear == year) {
            enabledDayRangeStart = mMinDate.get(Calendar.DAY_OF_MONTH);
        } else {
            enabledDayRangeStart = 1;
        }

        final int enabledDayRangeEnd;
        if (mMaxDate.get(Calendar.MONTH) == month && mMaxDate.get(Calendar.YEAR) == year) {
            enabledDayRangeEnd = mMaxDate.get(Calendar.DAY_OF_MONTH);
        } else {
            enabledDayRangeEnd = 31;
        }

        v.setMonthParams(selectedDay, month, year, mFirstDayOfWeek,
                enabledDayRangeStart, enabledDayRangeEnd);
        v.invalidate();

        return v;
    }

    private boolean isSelectedDayInMonth(int year, int month) {
        return mSelectedDay.get(Calendar.YEAR) == year && mSelectedDay.get(Calendar.MONTH) == month;
    }

    private boolean isCalendarInRange(Calendar value) {
        return value.compareTo(mMinDate) >= 0 && value.compareTo(mMaxDate) <= 0;
    }

    private final OnDayClickListener mOnDayClickListener = new OnDayClickListener() {
        @Override
        public void onDayClick(SimpleMonthView view, Calendar day) {
            if (day != null && isCalendarInRange(day)) {
                setSelectedDay(day);

                if (mOnDaySelectedListener != null) {
                    mOnDaySelectedListener.onDaySelected(SimpleMonthAdapter.this, day);
                }
            }
        }
    };

    public interface OnDaySelectedListener {
        public void onDaySelected(SimpleMonthAdapter view, Calendar day);
    }
}