/*
* Copyright 2012 Google Inc.
*
* 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 com.google.android.apps.iosched.util;
import com.google.android.apps.iosched.BuildConfig;
import com.google.android.apps.iosched.R;
import com.google.android.apps.iosched.provider.ScheduleContract.Blocks;
import com.google.android.apps.iosched.provider.ScheduleContract.Rooms;
import com.google.android.apps.iosched.ui.phone.MapActivity;
import com.google.android.apps.iosched.ui.phone.SessionDetailActivity;
import com.google.android.apps.iosched.ui.phone.SessionsActivity;
import com.google.android.apps.iosched.ui.phone.TrackDetailActivity;
import com.google.android.apps.iosched.ui.phone.VendorDetailActivity;
import com.google.android.apps.iosched.ui.tablet.MapMultiPaneActivity;
import com.google.android.apps.iosched.ui.tablet.SessionsVendorsMultiPaneActivity;
import android.annotation.TargetApi;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Build;
import android.preference.PreferenceManager;
import android.support.v4.app.FragmentActivity;
import android.text.Html;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.text.method.LinkMovementMethod;
import android.text.style.StyleSpan;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Calendar;
import java.util.Formatter;
import java.util.Locale;
import java.util.TimeZone;
/**
* An assortment of UI helpers.
*/
public class UIUtils {
/**
* Time zone to use when formatting all session times. To always use the
* phone local time, use {@link TimeZone#getDefault()}.
*/
public static final TimeZone CONFERENCE_TIME_ZONE = TimeZone.getTimeZone("America/Los_Angeles");
public static final long CONFERENCE_START_MILLIS = ParserUtils.parseTime(
"2012-06-27T09:30:00.000-07:00");
public static final long CONFERENCE_END_MILLIS = ParserUtils.parseTime(
"2012-06-29T18:00:00.000-07:00");
public static final String CONFERENCE_HASHTAG = "#io12";
private static final int SECOND_MILLIS = 1000;
private static final int MINUTE_MILLIS = 60 * SECOND_MILLIS;
private static final int HOUR_MILLIS = 60 * MINUTE_MILLIS;
private static final int DAY_MILLIS = 24 * HOUR_MILLIS;
/** Flags used with {@link DateUtils#formatDateRange}. */
private static final int TIME_FLAGS = DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_WEEKDAY | DateUtils.FORMAT_ABBREV_WEEKDAY;
/** {@link StringBuilder} used for formatting time block. */
private static StringBuilder sBuilder = new StringBuilder(50);
/** {@link Formatter} used for formatting time block. */
private static Formatter sFormatter = new Formatter(sBuilder, Locale.getDefault());
private static StyleSpan sBoldSpan = new StyleSpan(Typeface.BOLD);
private static CharSequence sEmptyRoomText;
private static CharSequence sCodeLabRoomText;
private static CharSequence sNowPlayingText;
private static CharSequence sLivestreamNowText;
private static CharSequence sLivestreamAvailableText;
public static final String GOOGLE_PLUS_PACKAGE_NAME = "com.google.android.apps.plus";
/**
* Format and return the given {@link Blocks} and {@link Rooms} values using
* {@link #CONFERENCE_TIME_ZONE}.
*/
public static String formatSessionSubtitle(String sessionTitle,
long blockStart, long blockEnd, String roomName, Context context) {
if (sEmptyRoomText == null || sCodeLabRoomText == null) {
sEmptyRoomText = context.getText(R.string.unknown_room);
sCodeLabRoomText = context.getText(R.string.codelab_room);
}
if (roomName == null) {
// TODO: remove the WAR for API not returning rooms for code labs
return context.getString(R.string.session_subtitle,
formatBlockTimeString(blockStart, blockEnd, context),
sessionTitle.contains("Code Lab")
? sCodeLabRoomText
: sEmptyRoomText);
}
return context.getString(R.string.session_subtitle,
formatBlockTimeString(blockStart, blockEnd, context), roomName);
}
/**
* Format and return the given {@link Blocks} values using
* {@link #CONFERENCE_TIME_ZONE}.
*/
public static String formatBlockTimeString(long blockStart, long blockEnd, Context context) {
TimeZone.setDefault(CONFERENCE_TIME_ZONE);
// NOTE: There is an efficient version of formatDateRange in Eclair and
// beyond that allows you to recycle a StringBuilder.
return DateUtils.formatDateRange(context, blockStart, blockEnd, TIME_FLAGS);
}
public static boolean isSameDay(long time1, long time2) {
TimeZone.setDefault(CONFERENCE_TIME_ZONE);
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTimeInMillis(time1);
cal2.setTimeInMillis(time2);
return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR);
}
public static String getTimeAgo(long time, Context ctx) {
if (time < 1000000000000L) {
// if timestamp given in seconds, convert to millis
time *= 1000;
}
long now = getCurrentTime(ctx);
if (time > now || time <= 0) {
return null;
}
// TODO: localize
final long diff = now - time;
if (diff < MINUTE_MILLIS) {
return "just now";
} else if (diff < 2 * MINUTE_MILLIS) {
return "a minute ago";
} else if (diff < 50 * MINUTE_MILLIS) {
return diff / MINUTE_MILLIS + " minutes ago";
} else if (diff < 90 * MINUTE_MILLIS) {
return "an hour ago";
} else if (diff < 24 * HOUR_MILLIS) {
return diff / HOUR_MILLIS + " hours ago";
} else if (diff < 48 * HOUR_MILLIS) {
return "yesterday";
} else {
return diff / DAY_MILLIS + " days ago";
}
}
/**
* Populate the given {@link TextView} with the requested text, formatting
* through {@link Html#fromHtml(String)} when applicable. Also sets
* {@link TextView#setMovementMethod} so inline links are handled.
*/
public static void setTextMaybeHtml(TextView view, String text) {
if (TextUtils.isEmpty(text)) {
view.setText("");
return;
}
if (text.contains("<") && text.contains(">")) {
view.setText(Html.fromHtml(text));
view.setMovementMethod(LinkMovementMethod.getInstance());
} else {
view.setText(text);
}
}
public static void updateTimeAndLivestreamBlockUI(final Context context,
long blockStart, long blockEnd, boolean hasLivestream,
View backgroundView, TextView titleView, TextView subtitleView,
CharSequence subtitle) {
long currentTimeMillis = getCurrentTime(context);
boolean past = (currentTimeMillis > blockEnd && currentTimeMillis < CONFERENCE_END_MILLIS);
boolean present = (blockStart <= currentTimeMillis && currentTimeMillis <= blockEnd);
final Resources res = context.getResources();
if (backgroundView != null) {
backgroundView.setBackgroundColor(past
? res.getColor(R.color.past_background_color)
: 0);
}
if (titleView != null) {
titleView.setTypeface(Typeface.SANS_SERIF, past ? Typeface.NORMAL : Typeface.BOLD);
}
if (subtitleView != null) {
boolean empty = true;
SpannableStringBuilder sb = new SpannableStringBuilder(); // TODO: recycle
if (subtitle != null) {
sb.append(subtitle);
empty = false;
}
if (present) {
if (sNowPlayingText == null) {
sNowPlayingText = Html.fromHtml(context.getString(R.string.now_playing_badge));
}
if (!empty) {
sb.append(" ");
}
sb.append(sNowPlayingText);
if (hasLivestream) {
if (sLivestreamNowText == null) {
sLivestreamNowText = Html.fromHtml(" " +
context.getString(R.string.live_now_badge));
}
sb.append(sLivestreamNowText);
}
} else if (hasLivestream) {
if (sLivestreamAvailableText == null) {
sLivestreamAvailableText = Html.fromHtml(
context.getString(R.string.live_available_badge));
}
if (!empty) {
sb.append(" ");
}
sb.append(sLivestreamAvailableText);
}
subtitleView.setText(sb);
}
}
/**
* Given a snippet string with matching segments surrounded by curly
* braces, turn those areas into bold spans, removing the curly braces.
*/
public static Spannable buildStyledSnippet(String snippet) {
final SpannableStringBuilder builder = new SpannableStringBuilder(snippet);
// Walk through string, inserting bold snippet spans
int startIndex = -1, endIndex = -1, delta = 0;
while ((startIndex = snippet.indexOf('{', endIndex)) != -1) {
endIndex = snippet.indexOf('}', startIndex);
// Remove braces from both sides
builder.delete(startIndex - delta, startIndex - delta + 1);
builder.delete(endIndex - delta - 1, endIndex - delta);
// Insert bold style
builder.setSpan(sBoldSpan, startIndex - delta, endIndex - delta - 1,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
delta += 2;
}
return builder;
}
public static void preferPackageForIntent(Context context, Intent intent, String packageName) {
PackageManager pm = context.getPackageManager();
for (ResolveInfo resolveInfo : pm.queryIntentActivities(intent, 0)) {
if (resolveInfo.activityInfo.packageName.equals(packageName)) {
intent.setPackage(packageName);
break;
}
}
}
public static ImageFetcher getImageFetcher(final FragmentActivity activity) {
// The ImageFetcher takes care of loading remote images into our ImageView
ImageFetcher fetcher = new ImageFetcher(activity);
fetcher.setImageCache(ImageCache.findOrCreateCache(activity, "imageFetcher"));
return fetcher;
}
public static String getSessionHashtagsString(String hashtags) {
if (!TextUtils.isEmpty(hashtags)) {
if (!hashtags.startsWith("#")) {
hashtags = "#" + hashtags;
}
if (hashtags.contains(CONFERENCE_HASHTAG)) {
return hashtags;
}
return CONFERENCE_HASHTAG + " " + hashtags;
} else {
return CONFERENCE_HASHTAG;
}
}
private static final int BRIGHTNESS_THRESHOLD = 130;
/**
* Calculate whether a color is light or dark, based on a commonly known
* brightness formula.
*
* @see {@literal http://en.wikipedia.org/wiki/HSV_color_space%23Lightness}
*/
public static boolean isColorDark(int color) {
return ((30 * Color.red(color) +
59 * Color.green(color) +
11 * Color.blue(color)) / 100) <= BRIGHTNESS_THRESHOLD;
}
// Shows whether a notification was fired for a particular session time block. In the
// event that notification has not been fired yet, return false and set the bit.
public static boolean isNotificationFiredForBlock(Context context, String blockId) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
final String key = String.format("notification_fired_%s", blockId);
boolean fired = sp.getBoolean(key, false);
sp.edit().putBoolean(key, true).commit();
return fired;
}
private static final long sAppLoadTime = System.currentTimeMillis();
public static long getCurrentTime(final Context context) {
if (BuildConfig.DEBUG) {
return context.getSharedPreferences("mock_data", Context.MODE_PRIVATE)
.getLong("mock_current_time", System.currentTimeMillis())
+ System.currentTimeMillis() - sAppLoadTime;
} else {
return System.currentTimeMillis();
}
}
public static void safeOpenLink(Context context, Intent linkIntent) {
try {
context.startActivity(linkIntent);
} catch (ActivityNotFoundException e) {
Toast.makeText(context, "Couldn't open link", Toast.LENGTH_SHORT) .show();
}
}
// TODO: use <meta-data> element instead
private static final Class[] sPhoneActivities = new Class[]{
MapActivity.class,
SessionDetailActivity.class,
SessionsActivity.class,
TrackDetailActivity.class,
VendorDetailActivity.class,
};
// TODO: use <meta-data> element instead
private static final Class[] sTabletActivities = new Class[]{
MapMultiPaneActivity.class,
SessionsVendorsMultiPaneActivity.class,
};
public static void enableDisableActivities(final Context context) {
boolean isHoneycombTablet = isHoneycombTablet(context);
PackageManager pm = context.getPackageManager();
// Enable/disable phone activities
for (Class a : sPhoneActivities) {
pm.setComponentEnabledSetting(new ComponentName(context, a),
isHoneycombTablet
? PackageManager.COMPONENT_ENABLED_STATE_DISABLED
: PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP);
}
// Enable/disable tablet activities
for (Class a : sTabletActivities) {
pm.setComponentEnabledSetting(new ComponentName(context, a),
isHoneycombTablet
? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
}
public static Class getMapActivityClass(Context context) {
if (UIUtils.isHoneycombTablet(context)) {
return MapMultiPaneActivity.class;
}
return MapActivity.class;
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static void setActivatedCompat(View view, boolean activated) {
if (hasHoneycomb()) {
view.setActivated(activated);
}
}
public static boolean isGoogleTV(Context context) {
return context.getPackageManager().hasSystemFeature("com.google.android.tv");
}
public static boolean hasFroyo() {
// Can use static final constants like FROYO, declared in later versions
// of the OS since they are inlined at compile time. This is guaranteed behavior.
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO;
}
public static boolean hasGingerbread() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD;
}
public static boolean hasHoneycomb() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB;
}
public static boolean hasHoneycombMR1() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1;
}
public static boolean hasICS() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH;
}
public static boolean hasJellyBean() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
}
public static boolean isTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK)
>= Configuration.SCREENLAYOUT_SIZE_LARGE;
}
public static boolean isHoneycombTablet(Context context) {
return hasHoneycomb() && isTablet(context);
}
}