/*
* Copyright 2011 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 oraculum.droid.util;
import java.util.Formatter;
import java.util.List;
import java.util.Locale;
import java.util.TimeZone;
import oraculum.droid.R;
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.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.preference.PreferenceManager;
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.widget.TextView;
/**
* 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(
"2011-05-10T09:00:00.000-07:00");
public static final long CONFERENCE_END_MILLIS = ParserUtils.parseTime(
"2011-05-11T17:30:00.000-07:00");
public static final Uri CONFERENCE_URL = Uri.parse("http://www.google.com/events/io/2011/");
/** 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. */
@SuppressWarnings("unused")
private static Formatter sFormatter = new Formatter(sBuilder, Locale.getDefault());
private static StyleSpan sBoldSpan = new StyleSpan(Typeface.BOLD);
/**
* Format and return the given {@link Blocks} and {@link Rooms} values using
* {@link #CONFERENCE_TIME_ZONE}.
*/
public static String formatClientesSubtitle(long blockStart, long blockEnd,
String roomName, 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.
final CharSequence timeString = DateUtils.formatDateRange(context,
blockStart, blockEnd, TIME_FLAGS);
return context.getString(R.string.clientes_subtitle, timeString, roomName);
}
/**
* 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 setSessionTitleColor(long blockStart, long blockEnd, TextView title,
TextView subtitle) {
long currentTimeMillis = System.currentTimeMillis();
int colorId = R.color.body_text_1;
int subColorId = R.color.body_text_2;
if (currentTimeMillis > blockEnd &&
currentTimeMillis < CONFERENCE_END_MILLIS) {
colorId = subColorId = R.color.body_text_disabled;
}
final Resources res = title.getResources();
title.setTextColor(res.getColor(colorId));
subtitle.setTextColor(res.getColor(subColorId));
}
/**
* 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 String getLastUsedTrackID(Context context) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
return sp.getString("last_track_id", null);
}
public static void setLastUsedTrackID(Context context, String trackID) {
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
sp.edit().putString("last_track_id", trackID).commit();
}
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;
}
public static boolean isHoneycomb() {
// Can use static final constants like HONEYCOMB, 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.HONEYCOMB;
}
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 isHoneycomb() && isTablet(context);
}
public static long getCurrentTime(final Context context) {
//SharedPreferences prefs = context.getSharedPreferences("mock_data", 0);
//prefs.edit().commit();
//return prefs.getLong("mock_current_time", System.currentTimeMillis());
return System.currentTimeMillis();
}
public static Drawable getIconForIntent(final Context context, Intent i) {
PackageManager pm = context.getPackageManager();
List<ResolveInfo> infos = pm.queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY);
if (infos.size() > 0) {
return infos.get(0).loadIcon(pm);
}
return null;
}
}