/*
* Zirco Browser for Android
*
* Copyright (C) 2010 J. Devauchelle and contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 3 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
package org.zirco.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;
import org.zirco.R;
import org.zirco.model.items.BookmarkItem;
import org.zirco.model.items.HistoryItem;
import org.zirco.providers.BookmarksProviderWrapper;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Environment;
import android.preference.PreferenceManager;
import android.text.ClipboardManager;
import android.util.DisplayMetrics;
import android.util.Log;
import android.widget.Toast;
/**
* Application utilities.
*/
public class ApplicationUtils {
private static String mAdSweepString = null;
private static String mRawStartPage = null;
private static String mRawStartPageStyles = null;
private static String mRawStartPageBookmarks = null;
private static String mRawStartPageHistory = null;
private static String mRawStartPageSearch = null;
private static int mFaviconSize = -1;
private static int mImageButtonSize = -1;
private static int mFaviconSizeForBookmarks = -1;
/**
* Share a page.
* @param activity The parent activity.
* @param title The page title.
* @param url The page url.
*/
public static void sharePage(Activity activity, String title, String url) {
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, url);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, title);
try {
activity.startActivity(Intent.createChooser(shareIntent, activity.getString(R.string.Main_ShareChooserTitle)));
} catch(android.content.ActivityNotFoundException ex) {
// if no app handles it, do nothing
}
}
public static String getWeaveAuthToken(Context context) {
String server = PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCE_WEAVE_SERVER, Constants.WEAVE_DEFAULT_SERVER);
String userName = PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCE_WEAVE_USERNAME, null);
String password = PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCE_WEAVE_PASSWORD, null);
String key = PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCE_WEAVE_KEY, null);
boolean ok = (server != null) && (server.length() > 0) && (UrlUtils.isUrl(server)) &&
(userName != null) && (userName.length() > 0) &&
(password != null) && (password.length() > 0) &&
(key != null) && (key.length() > 0);
if (ok) {
return String.format(Constants.WEAVE_AUTH_TOKEN_SCHEME, key, password, userName, server);
} else {
return null;
}
}
public static int getImageButtonSize(Activity activity) {
if (mImageButtonSize == -1) {
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW: mImageButtonSize = 16; break;
case DisplayMetrics.DENSITY_MEDIUM: mImageButtonSize = 32; break;
case DisplayMetrics.DENSITY_HIGH: mImageButtonSize = 48; break;
default: mImageButtonSize = 32;
}
}
return mImageButtonSize;
}
/**
* Get the required size of the favicon, depending on current screen density.
* @param activity The current activity.
* @return The size of the favicon, in pixels.
*/
public static int getFaviconSize(Activity activity) {
if (mFaviconSize == -1) {
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW: mFaviconSize = 12; break;
case DisplayMetrics.DENSITY_MEDIUM: mFaviconSize = 24; break;
case DisplayMetrics.DENSITY_HIGH: mFaviconSize = 32; break;
default: mFaviconSize = 24;
}
}
return mFaviconSize;
}
/**
* Get the required size of the favicon, depending on current screen density.
* @param activity The current activity.
* @return The size of the favicon, in pixels.
*/
public static int getFaviconSizeForBookmarks(Activity activity) {
if (mFaviconSizeForBookmarks == -1) {
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW: mFaviconSizeForBookmarks = 12; break;
case DisplayMetrics.DENSITY_MEDIUM: mFaviconSizeForBookmarks = 16; break;
case DisplayMetrics.DENSITY_HIGH: mFaviconSizeForBookmarks = 24; break;
default: mFaviconSizeForBookmarks = 16;
}
}
return mFaviconSizeForBookmarks;
}
/**
* Display a standard yes / no dialog.
* @param context The current context.
* @param icon The dialog icon.
* @param title The dialog title.
* @param message The dialog message.
* @param onYes The dialog listener for the yes button.
*/
public static void showYesNoDialog(Context context, int icon, int title, int message, DialogInterface.OnClickListener onYes) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(true);
builder.setIcon(icon);
builder.setTitle(context.getResources().getString(title));
builder.setMessage(context.getResources().getString(message));
builder.setInverseBackgroundForced(true);
builder.setPositiveButton(context.getResources().getString(R.string.Commons_Yes), onYes);
builder.setNegativeButton(context.getResources().getString(R.string.Commons_No), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
/**
* Display a continue / cancel dialog.
* @param context The current context.
* @param icon The dialog icon.
* @param title The dialog title.
* @param message The dialog message.
* @param onContinue The dialog listener for the continue button.
* @param onCancel The dialog listener for the cancel button.
*/
public static void showContinueCancelDialog(Context context, int icon, String title, String message, DialogInterface.OnClickListener onContinue, DialogInterface.OnClickListener onCancel) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(true);
builder.setIcon(icon);
builder.setTitle(title);
builder.setMessage(message);
builder.setInverseBackgroundForced(true);
builder.setPositiveButton(context.getResources().getString(R.string.Commons_Continue), onContinue);
builder.setNegativeButton(context.getResources().getString(R.string.Commons_Cancel), onCancel);
AlertDialog alert = builder.create();
alert.show();
}
/**
* Display a standard Ok dialog.
* @param context The current context.
* @param icon The dialog icon.
* @param title The dialog title.
* @param message The dialog message.
*/
public static void showOkDialog(Context context, int icon, String title, String message) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(false);
builder.setIcon(icon);
builder.setTitle(title);
builder.setMessage(message);
builder.setInverseBackgroundForced(true);
builder.setPositiveButton(context.getResources().getString(R.string.Commons_Ok), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
/**
* Display a standard Ok / Cancel dialog.
* @param context The current context.
* @param icon The dialog icon.
* @param title The dialog title.
* @param message The dialog message.
* @param onYes The dialog listener for the yes button.
*/
public static void showOkCancelDialog(Context context, int icon, String title, String message, DialogInterface.OnClickListener onYes) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(true);
builder.setIcon(icon);
builder.setTitle(title);
builder.setMessage(message);
builder.setInverseBackgroundForced(true);
builder.setPositiveButton(context.getResources().getString(R.string.Commons_Ok), onYes);
builder.setNegativeButton(context.getResources().getString(R.string.Commons_Cancel), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
/**
* Check if the SD card is available. Display an alert if not.
* @param context The current context.
* @param showMessage If true, will display a message for the user.
* @return True if the SD card is available, false otherwise.
*/
public static boolean checkCardState(Context context, boolean showMessage) {
// Check to see if we have an SDCard
String status = Environment.getExternalStorageState();
if (!status.equals(Environment.MEDIA_MOUNTED)) {
int messageId;
// Check to see if the SDCard is busy, same as the music app
if (status.equals(Environment.MEDIA_SHARED)) {
messageId = R.string.Commons_SDCardErrorSDUnavailable;
} else {
messageId = R.string.Commons_SDCardErrorNoSDMsg;
}
if (showMessage) {
ApplicationUtils.showErrorDialog(context, R.string.Commons_SDCardErrorTitle, messageId);
}
return false;
}
return true;
}
/**
* Show an error dialog.
* @param context The current context.
* @param title The title string id.
* @param message The message string id.
*/
public static void showErrorDialog(Context context, int title, int message) {
new AlertDialog.Builder(context)
.setTitle(title)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(message)
.setPositiveButton(R.string.Commons_Ok, null)
.show();
}
public static void showErrorDialog(Context context, int title, String message) {
new AlertDialog.Builder(context)
.setTitle(title)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(message)
.setPositiveButton(R.string.Commons_Ok, null)
.show();
}
/**
* Load a raw string resource.
* @param context The current context.
* @param resourceId The resource id.
* @return The loaded string.
*/
private static String getStringFromRawResource(Context context, int resourceId) {
String result = null;
InputStream is = context.getResources().openRawResource(resourceId);
if (is != null) {
StringBuilder sb = new StringBuilder();
String line;
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
while ((line = reader.readLine()) != null) {
sb.append(line).append("\n");
}
} catch (IOException e) {
Log.w("ApplicationUtils", String.format("Unable to load resource %s: %s", resourceId, e.getMessage()));
} finally {
try {
is.close();
} catch (IOException e) {
Log.w("ApplicationUtils", String.format("Unable to load resource %s: %s", resourceId, e.getMessage()));
}
}
result = sb.toString();
} else {
result = "";
}
return result;
}
/**
* Load the AdSweep script if necessary.
* @param context The current context.
* @return The AdSweep script.
*/
public static String getAdSweepString(Context context) {
if (mAdSweepString == null) {
InputStream is = context.getResources().openRawResource(R.raw.adsweep);
if (is != null) {
StringBuilder sb = new StringBuilder();
String line;
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
while ((line = reader.readLine()) != null) {
if ((line.length() > 0) &&
(!line.startsWith("//"))) {
sb.append(line).append("\n");
}
}
} catch (IOException e) {
Log.w("AdSweep", "Unable to load AdSweep: " + e.getMessage());
} finally {
try {
is.close();
} catch (IOException e) {
Log.w("AdSweep", "Unable to load AdSweep: " + e.getMessage());
}
}
mAdSweepString = sb.toString();
} else {
mAdSweepString = "";
}
}
return mAdSweepString;
}
/**
* Load the changelog string.
* @param context The current context.
* @return The changelog string.
*/
public static String getChangelogString(Context context) {
return getStringFromRawResource(context, R.raw.changelog);
}
/**
* Build the html result of the most recent bookmarks.
* @param context The current context.
* @return The html result of the most recent bookmarks.
*/
private static String getBookmarksHtml(Context context) {
String result = "";
StringBuilder bookmarksSb = new StringBuilder();
if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(Constants.PREFERENCES_START_PAGE_SHOW_BOOKMARKS, true)) {
int limit;
try {
limit = Integer.parseInt(PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCES_START_PAGE_BOOKMARKS_LIMIT, "5"));
} catch (Exception e) {
limit = 5;
}
List<BookmarkItem> results = BookmarksProviderWrapper.getStockBookmarksWithLimit(context.getContentResolver(), limit);
for (BookmarkItem item : results) {
bookmarksSb.append(String.format("<li><a href=\"%s\">%s</a></li>",
item.getUrl(),
item.getTitle()));
}
}
result = String.format(mRawStartPageBookmarks,
context.getResources().getString(R.string.StartPage_Bookmarks),
bookmarksSb.toString());
return result;
}
/**
* Build the html result of the most recent history.
* @param context The current context.
* @return The html result of the most recent history.
*/
private static String getHistoryHtml(Context context) {
String result = "";
StringBuilder historySb = new StringBuilder();
if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(Constants.PREFERENCES_START_PAGE_SHOW_HISTORY, true)) {
int limit;
try {
limit = Integer.parseInt(PreferenceManager.getDefaultSharedPreferences(context).getString(Constants.PREFERENCES_START_PAGE_HISTORY_LIMIT, "5"));
} catch (Exception e) {
limit = 5;
}
List<HistoryItem> results = BookmarksProviderWrapper.getStockHistoryWithLimit(context.getContentResolver(), limit);
for (HistoryItem item : results) {
historySb.append(String.format("<li><a href=\"%s\">%s</a></li>",
item.getUrl(),
item.getTitle()));
}
}
result = String.format(mRawStartPageHistory,
context.getResources().getString(R.string.StartPage_History),
historySb.toString());
return result;
}
/**
* Load the start page html.
* @param context The current context.
* @return The start page html.
*/
public static String getStartPage(Context context) {
if (mRawStartPage == null) {
mRawStartPage = getStringFromRawResource(context, R.raw.start);
mRawStartPageStyles = getStringFromRawResource(context, R.raw.start_style);
mRawStartPageBookmarks = getStringFromRawResource(context, R.raw.start_bookmarks);
mRawStartPageHistory = getStringFromRawResource(context, R.raw.start_history);
mRawStartPageSearch = getStringFromRawResource(context, R.raw.start_search);
}
String result = mRawStartPage;
String bookmarksHtml = getBookmarksHtml(context);
String historyHtml = getHistoryHtml(context);
String searchHtml = "";
if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(Constants.PREFERENCES_START_PAGE_SHOW_SEARCH, false)) {
searchHtml = String.format(mRawStartPageSearch, context.getResources().getString(R.string.StartPage_Search), context.getResources().getString(R.string.StartPage_SearchButton));
}
String bodyHtml = searchHtml + bookmarksHtml + historyHtml;
result = String.format(mRawStartPage,
mRawStartPageStyles,
context.getResources().getString(R.string.StartPage_Welcome),
bodyHtml);
return result;
}
/**
* Get the application version code.
* @param context The current context.
* @return The application version code.
*/
public static int getApplicationVersionCode(Context context) {
int result = -1;
try {
PackageManager manager = context.getPackageManager();
PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);
result = info.versionCode;
} catch (NameNotFoundException e) {
Log.w("ApplicationUtils", "Unable to get application version: " + e.getMessage());
result = -1;
}
return result;
}
/**
* Copy a text to the clipboard.
* @param context The current context.
* @param text The text to copy.
* @param toastMessage The message to show in a Toast notification. If empty or null, does not display notification.
*/
public static void copyTextToClipboard(Context context, String text, String toastMessage) {
ClipboardManager clipboard = (ClipboardManager) context.getSystemService(Activity.CLIPBOARD_SERVICE);
clipboard.setText(text);
if ((toastMessage != null) &&
(toastMessage.length() > 0)) {
Toast.makeText(context, toastMessage, Toast.LENGTH_SHORT).show();
}
}
}