2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.calendar;
19 import android.content.ContentResolver;
20 import android.content.ContentUris;
21 import android.content.ContentValues;
22 import android.content.Context;
23 import android.database.Cursor;
24 import android.graphics.drawable.Drawable;
25 import android.graphics.drawable.GradientDrawable;
26 import android.net.Uri;
27 import android.provider.Calendar.Calendars;
28 import android.text.TextUtils;
29 import android.view.LayoutInflater;
30 import android.view.View;
31 import android.view.ViewGroup;
32 import android.widget.CheckBox;
33 import android.widget.CompoundButton;
34 import android.widget.CursorAdapter;
35 import android.widget.TextView;
37 public class SelectCalendarsAdapter extends CursorAdapter {
39 private static final int CLEAR_ALPHA_MASK = 0x00FFFFFF;
40 private static final int HIGH_ALPHA = 255 << 24;
41 private static final int MED_ALPHA = 180 << 24;
42 private static final int LOW_ALPHA = 150 << 24;
44 /* The corner should be rounded on the top right and bottom right */
45 private static final float[] CORNERS = new float[] {0, 0, 5, 5, 5, 5, 0, 0};
47 private static final String TAG = "Calendar";
49 private final LayoutInflater mInflater;
50 private final ContentResolver mResolver;
51 private final ContentValues mValues = new ContentValues();
52 private Boolean mIsChecked[] = null;
53 private static final Boolean CHECKED = true;
54 private static final Boolean UNCHECKED = false;
56 private class CheckBoxListener implements CheckBox.OnCheckedChangeListener {
57 private final long mCalendarId;
58 private final int mPosition;
60 private CheckBoxListener(long calendarId, int position) {
62 mCalendarId = calendarId;
65 public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
66 Uri uri = ContentUris.withAppendedId(Calendars.CONTENT_URI, mCalendarId);
68 int checked = isChecked ? 1 : 0;
69 mValues.put(Calendars.SELECTED, checked);
70 mResolver.update(uri, mValues, null, null);
71 mIsChecked[mPosition] = isChecked ? CHECKED : UNCHECKED;
75 private void updateIsCheckedArray(int cursorCount) {
76 mIsChecked = new Boolean[cursorCount];
79 public SelectCalendarsAdapter(Context context, Cursor cursor) {
80 super(context, cursor);
81 mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
82 mResolver = context.getContentResolver();
83 updateIsCheckedArray(cursor.getCount());
87 public View newView(Context context, Cursor cursor, ViewGroup parent) {
88 return mInflater.inflate(R.layout.calendar_item, parent, false);
92 public void bindView(View view, Context context, Cursor cursor) {
93 int idColumn = cursor.getColumnIndexOrThrow(Calendars._ID);
94 int nameColumn = cursor.getColumnIndexOrThrow(Calendars.DISPLAY_NAME);
95 int selectedColumn = cursor.getColumnIndexOrThrow(Calendars.SELECTED);
96 int colorColumn = cursor.getColumnIndexOrThrow(Calendars.COLOR);
97 view.findViewById(R.id.color).setBackgroundDrawable(getColorChip(cursor.getInt(colorColumn)));
98 setText(view, R.id.calendar, cursor.getString(nameColumn));
99 CheckBox box = (CheckBox) view.findViewById(R.id.checkbox);
100 long id = cursor.getLong(idColumn);
102 // Update mIsChecked array is needed
103 int cursorCount = cursor.getCount();
104 if (cursorCount != mIsChecked.length) {
105 updateIsCheckedArray(cursorCount);
108 // If the value hasn't changed, read from cursor; otherwise, read from mIsChecked array.
110 int position = cursor.getPosition();
111 if (mIsChecked[position] == null) {
112 checked = cursor.getInt(selectedColumn) != 0;
114 checked = (mIsChecked[position] == CHECKED);
117 box.setOnCheckedChangeListener(null);
118 box.setChecked(checked);
119 box.setOnCheckedChangeListener(new CheckBoxListener(id, position));
122 private static void setText(View view, int id, String text) {
123 if (TextUtils.isEmpty(text)) {
126 TextView textView = (TextView) view.findViewById(id);
127 textView.setText(text);
130 private Drawable getColorChip(int color) {
133 * We want the color chip to have a nice gradient using
134 * the color of the calendar. To do this we use a GradientDrawable.
135 * The color supplied has an alpha of FF so we first do:
137 * to clear the alpha. Then we add our alpha to it.
138 * We use 3 colors to get a step effect where it starts off very
139 * light and quickly becomes dark and then a slow transition to
142 color &= CLEAR_ALPHA_MASK;
143 int startColor = color | HIGH_ALPHA;
144 int middleColor = color | MED_ALPHA;
145 int endColor = color | LOW_ALPHA;
146 int[] colors = new int[] {startColor, middleColor, endColor};
147 GradientDrawable d = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, colors);
148 d.setCornerRadii(CORNERS);