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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.impl.protocol.irc;
/**
* Available IRC control characters.
*
* @author Danny van Heumen
*/
public abstract class ControlChar
{
/**
* HTML tag that expresses the specific formatting requirement.
*/
private final String tag;
/**
* Constructor.
*
* @param htmlTag the control code
*/
private ControlChar(final String htmlTag)
{
this.tag = htmlTag;
}
/**
* The specified HTML tag.
*
* @return returns the HTML tag.
*/
public String getTag()
{
return this.tag;
}
/**
* Get the HTML start tag.
*
* @return returns HTML start tag.
*/
public String getHtmlStart()
{
return "<" + this.tag + ">";
}
/**
* Get the HTML end tag.
*
* @return returns the HTML end tag
*/
public String getHtmlEnd()
{
return "</" + this.tag + ">";
}
/**
* Control char representation for 'bold' formatting.
*
* @author Danny van Heumen
*/
static class Bold extends ControlChar
{
/**
* IRC control code.
*/
public static final char CODE = '\u0002';
/**
* Constructor.
*/
Bold()
{
super("b");
}
}
/**
* Control char representation for 'italics' formatting.
*
* @author Danny van Heumen
*/
static class Italics extends ControlChar
{
/**
* IRC control code.
*/
public static final char CODE = '\u0016';
/**
* Constructor.
*/
Italics()
{
super("i");
}
}
/**
* Control char representation for underlining.
*
* @author Danny van Heumen
*/
static class Underline extends ControlChar
{
/**
* IRC control code.
*/
public static final char CODE = '\u001F';
/**
* Constructor.
*/
Underline()
{
super("u");
}
}
/**
* Control char representation for colored text.
*
* @author Danny van Heumen
*/
static class ColorFormat extends ControlChar
{
/**
* IRC control code.
*/
public static final char CODE = '\u0003';
/**
* Foreground color.
*/
private final Color foreground;
/**
* Background color.
*/
private final Color background;
/**
* Constructor.
*
* @param foreground foreground color
* @param background background color
*/
ColorFormat(final Color foreground, final Color background)
{
super("font");
this.foreground = foreground;
this.background = background;
}
/**
* Get HTML start tag with foreground and background color codes
* embedded.
*
* @return Returns string containing html start tag including foreground
* and background colors.
*/
public String getHtmlStart()
{
StringBuilder result = new StringBuilder("<");
result.append(getTag());
if (this.foreground != null)
{
result.append(" color=\"");
result.append(this.foreground.getHtml());
result.append("\"");
}
if (this.background != null)
{
result.append(" bgcolor=\"");
result.append(this.background.getHtml());
result.append("\"");
}
result.append('>');
return result.toString();
}
}
/**
* Control char representation for the cancellation of all active formatting
* options, i.e. return to normal.
*
* In the current implementation, you cannot instantiate this control char.
* Its use is purely symbolic, since it doesn't actually translate in
* additional HTML formatting tags.
*
* @author Danny van Heumen
*/
abstract static class Normal extends ControlChar
{
/**
* IRC control code.
*/
public static final char CODE = '\u000F';
/**
* Private constructor since it should not be instantiated.
*/
private Normal()
{
super(null);
}
}
}
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