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/*******************************************************************************
* Copyright (C) 2015 Thomas Wolf <thomas.wolf@paranor.ch>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.egit.ui.internal;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import org.eclipse.core.runtime.Assert;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.UIPreferences;
import org.eclipse.jgit.annotations.NonNull;
import org.eclipse.jgit.annotations.Nullable;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.util.GitDateFormatter;
/**
* A date formatter that formats dates according to the user's preferences.
*
* @see org.eclipse.egit.ui.internal.preferences.DateFormatPreferencePage
*/
public class PreferenceBasedDateFormatter extends GitDateFormatter {
private final SimpleDateFormat customFormat;
private final GitDateFormatter.Format gitFormat;
/**
* Creates a new {@link PreferenceBasedDateFormatter} that will format dates
* according to the date format preferences set at the time it was created.
*
* @return a new {@link PreferenceBasedDateFormatter}
*/
public static @NonNull PreferenceBasedDateFormatter create() {
String choice = Activator.getDefault().getPreferenceStore()
.getString(UIPreferences.DATE_FORMAT_CHOICE);
GitDateFormatter.Format format = null;
try {
format = GitDateFormatter.Format.valueOf(choice);
} catch (IllegalArgumentException | NullPointerException e) {
// Custom format: ignore and leave at null
}
return new PreferenceBasedDateFormatter(format);
}
private PreferenceBasedDateFormatter(GitDateFormatter.Format gitFormat) {
super(gitFormat != null ? gitFormat : GitDateFormatter.Format.DEFAULT);
this.gitFormat = gitFormat;
SimpleDateFormat format = null;
if (gitFormat == null) {
String pattern = Activator.getDefault().getPreferenceStore()
.getString(UIPreferences.DATE_FORMAT);
try {
format = new SimpleDateFormat(pattern);
} catch (IllegalArgumentException | NullPointerException e1) {
// Corrupted preferences?
Activator.logError("org.eclipse.egit.ui preference " //$NON-NLS-1$
+ UIPreferences.DATE_FORMAT + " is invalid; ignoring", //$NON-NLS-1$
e1);
format = new SimpleDateFormat(
Activator.getDefault().getPreferenceStore()
.getDefaultString(UIPreferences.DATE_FORMAT));
}
}
this.customFormat = format;
}
/**
* Formats a {@link Date} using the default {@link TimeZone} according to
* the date format preferences set when this instance was created.
*
* @param date
* to format
* @return the string representation of the date, or the empty string if the
* date is {@code null}.
*/
public String formatDate(Date date) {
if (date == null) {
return ""; //$NON-NLS-1$
}
TimeZone timeZone = TimeZone.getDefault();
Assert.isNotNull(timeZone);
return formatDate(date, timeZone);
}
/**
* Formats a {@link Date} using the given {@link TimeZone} according to the
* date format preferences set when this instance was created.
*
* @param date
* to format
* @param timeZone
* to use
* @return the string representation of the date
*/
public String formatDate(@NonNull Date date, @NonNull TimeZone timeZone) {
return formatDate(new PersonIdent("", "", date, timeZone)); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Formats the date of a {@link PersonIdent} according to the date format
* preferences set when this instance was created.
*
* @param ident
* to format the date of
* @return the string representation of the date, or the empty string if
* {@code ident} is {@code null}.
*/
@Override
public String formatDate(PersonIdent ident) {
if (ident == null) {
return ""; //$NON-NLS-1$
}
if (customFormat == null) {
return super.formatDate(ident);
}
return customFormat.format(ident.getWhen());
}
/**
* Retrieves the {@link org.eclipse.jgit.util.GitDateFormatter.Format
* GitDateFormatter.Format} this formatter uses.
*
* @return the format, or {@code null} if a user-defined date format pattern
* is used
*/
public @Nullable GitDateFormatter.Format getFormat() {
return gitFormat;
}
}
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