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IMentionable.java
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IMentionable.java
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/*
* Copyright 2015-2017 Austin Keener & Michael Ritter
*
* 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 net.dv8tion.jda.core.entities;
import net.dv8tion.jda.core.utils.MiscUtil;
import java.util.Formattable;
import java.util.FormattableFlags;
import java.util.Formatter;
/**
* Marks a mentionable entity.
*
* <h1>Formattable</h1>
* This interface extends {@link java.util.Formattable Formattable} and can be used with a {@link java.util.Formatter Formatter}
* such as used by {@link String#format(String, Object...) String.format(String, Object...)}
* or {@link java.io.PrintStream#printf(String, Object...) PrintStream.printf(String, Object...)}.
*
* <p>This will use {@link #getAsMention()} rather than {@link Object#toString()}!
* <br>Supported Features:
* <ul>
* <li><b>Width/Left-Justification</b>
* <br> - Ensures the size of a format
* (Example: {@code %20s} - uses at minimum 20 chars;
* {@code %-10s} - uses left-justified padding)</li>
*
* <li><b>Precision</b>
* <br> - Cuts the content to the specified size
* (Example: {@code %.20s})</li>
* </ul>
*
* <p>More information on formatting syntax can be found in the {@link java.util.Formatter format syntax documentation}!
* <br><b>Note</b>: Some implementations also support the <b>alternative</b> flag.
*
* @since 3.0
*/
public interface IMentionable extends Formattable
{
/**
* Retrieve a Mention for this Entity.
*
* @return A resolvable mention.
*/
String getAsMention();
@Override
default void formatTo(Formatter formatter, int flags, int width, int precision)
{
boolean leftJustified = (flags & FormattableFlags.LEFT_JUSTIFY) == FormattableFlags.LEFT_JUSTIFY;
boolean upper = (flags & FormattableFlags.UPPERCASE) == FormattableFlags.UPPERCASE;
String out = upper ? getAsMention().toUpperCase(formatter.locale()) : getAsMention();
MiscUtil.appendTo(formatter, width, precision, leftJustified, out);
}
}