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/**
* $Id: AbstractRtfField.java,v 1.16 2004/12/14 15:14:44 blowagie Exp $
*
* Copyright 2002 by
* SMB
* [email protected]
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the ?GNU LIBRARY GENERAL PUBLIC LICENSE?), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library 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 Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.rtf;
import com.lowagie.text.Chunk;
import com.lowagie.text.Font;
import com.lowagie.text.rtf.RtfWriter;
import java.io.OutputStream;
import java.io.IOException;
/**
* This class implements an abstract RtfField.
*
* This class is based on the RtfWriter-package from Mark Hall.
*
* ONLY FOR USE WITH THE RtfWriter NOT with the RtfWriter2.
*
* @author Dirk Weigenand
* @version $Id: AbstractRtfField.java,v 1.16 2004/12/14 15:14:44 blowagie Exp $
* @since Mon Aug 19 14:50:39 2002
*/
abstract class AbstractRtfField extends Chunk implements RtfField {
private static final byte[] fldDirty = "\\flddirty".getBytes();
private static final byte[] fldPriv = "\\fldpriv".getBytes();
private static final byte[] fldLock = "\\fldlock".getBytes();
private static final byte[] fldEdit = "\\fldedit".getBytes();
private static final byte[] fldAlt = "\\fldalt".getBytes();
/**
* public constructor
* @param content the content of the field
* @param font the font of the field
*/
public AbstractRtfField(String content, Font font) {
super(content, font);
}
/**
* Determines whether this RtfField is locked, i.e. it cannot be
* updated. Defaults to false.
*/
private boolean rtfFieldIsLocked = false;
/**
* Determines whether a formatting change has been made since the
* field was last updated. Defaults to false.
*/
private boolean rtfFieldIsDirty = false;
/**
* Determines whether text has been added, removed from thre field
* result since the field was last updated. Defaults to
* false.
*/
private boolean rtfFieldWasEdited = false;
/**
* Determines whether the field is in suitable form for
* display. Defaults to false.
*/
private boolean rtfFieldIsPrivate = false;
/**
* Determines whether this RtfField shall refer to an end note.
*/
private boolean rtfFieldIsAlt = false;
/**
* Determines whtether the field is locked, i.e. it cannot be
* updated.
*
* @return true iff the field cannot be updated,
* false otherwise.
*/
public final boolean isLocked() {
return this.rtfFieldIsLocked;
}
/**
* Set whether the field can be updated.
*
* @param rtfFieldIsLocked true if the field cannot be
* updated, false otherwise.
*/
public final void setLocked(final boolean rtfFieldIsLocked) {
this.rtfFieldIsLocked = rtfFieldIsLocked;
}
/**
* Set whether a formatting change has been made since the field
* was last updated
* @param rtfFieldIsDirty true if the field was
* changed since the field was last updated, false
* otherwise.
*/
public final void setDirty(final boolean rtfFieldIsDirty) {
this.rtfFieldIsDirty = rtfFieldIsDirty;
}
/**
* Determines whether the field was changed since the field was
* last updated
* @return true if the field was changed since the field
* was last updated, false otherwise.
*/
public final boolean isDirty() {
return this.rtfFieldIsDirty;
}
/**
* Set whether text has been added, removed from thre field result
* since the field was last updated.
* @param rtfFieldWasEdited Determines whether text has been
* added, removed from the field result since the field was last
* updated (true, false otherwise..
*/
public final void setEdited(final boolean rtfFieldWasEdited) {
this.rtfFieldWasEdited = rtfFieldWasEdited;
}
/**
* Determines whether text has been added, removed from the field
* result since the field was last updated.
* @return rtfFieldWasEdited true if text has been added,
* removed from the field result since the field was last updated,
* false otherwise.
*/
public final boolean wasEdited() {
return this.rtfFieldWasEdited;
}
/**
* Set whether the field is in suitable form for
* display. I.e. it's not a field with a picture as field result
* @param rtfFieldIsPrivate Determines whether the field is in
* suitable form for display: true it can be displayed,
* false it cannot be displayed.
*/
public final void setPrivate(final boolean rtfFieldIsPrivate) {
this.rtfFieldIsPrivate = rtfFieldIsPrivate;
}
/**
* Determines whether the field is in suitable form for display.
* @return whether the field is in suitable form for display:
* true yes, false no it cannot be displayed.
*/
public final boolean isPrivate() {
return this.rtfFieldIsPrivate;
}
/**
* Abstract method for writing custom stuff to the Field
* Initialization Stuff part of an RtfField.
* @param out
* @throws IOException
*/
public abstract void writeRtfFieldInitializationStuff(OutputStream out) throws IOException;
/**
* Abstract method for writing custom stuff to the Field Result
* part of an RtfField.
* @param out
* @throws IOException
*/
public abstract void writeRtfFieldResultStuff(OutputStream out) throws IOException;
/**
* Determines whether this RtfField shall refer to an end note.
* @param rtfFieldIsAlt true if this RtfField shall refer
* to an end note, false otherwise
*/
public final void setAlt(final boolean rtfFieldIsAlt) {
this.rtfFieldIsAlt = rtfFieldIsAlt;
}
/**
* Determines whether this RtfField shall refer to an end
* note.
* @return true if this RtfField shall refer to an end
* note, false otherwise.
*/
public final boolean isAlt() {
return this.rtfFieldIsAlt;
}
/**
* empty implementation for Chunk.
* @return an empty string
*/
public final String content() {
return "";
}
/**
* For Interface RtfField.
* @param writer
* @param out
* @throws IOException
*/
public void write( RtfWriter writer, OutputStream out ) throws IOException {
writeRtfFieldBegin(out);
writeRtfFieldModifiers(out);
writeRtfFieldInstBegin(out);
writer.writeInitialFontSignature( out, this );
writeRtfFieldInitializationStuff(out);
writeRtfFieldInstEnd(out);
writeRtfFieldResultBegin(out);
writer.writeInitialFontSignature( out, this );
writeRtfFieldResultStuff(out);
writeRtfFieldResultEnd(out);
writeRtfFieldEnd(out);
}
/**
* Write the beginning of an RtfField to the OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldBegin(OutputStream out) throws IOException {
out.write(RtfWriter.openGroup);
out.write(RtfWriter.escape);
out.write(RtfWriter.field);
}
/**
* Write the modifiers defined for a RtfField to the OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldModifiers(OutputStream out) throws IOException {
if (isDirty()) {
out.write(fldDirty);
}
if (wasEdited()) {
out.write(fldEdit);
}
if (isLocked()) {
out.write(fldLock);
}
if (isPrivate()) {
out.write(fldPriv);
}
}
/**
* Write RtfField Initialization Stuff to OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldInstBegin(OutputStream out) throws IOException {
out.write( RtfWriter.openGroup );
out.write( RtfWriter.escape );
out.write( RtfWriter.fieldContent );
out.write( RtfWriter.delimiter );
}
/**
* Write end of RtfField Initialization Stuff to OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldInstEnd(OutputStream out) throws IOException {
if (isAlt()) {
out.write( fldAlt );
out.write( RtfWriter.delimiter );
}
out.write( RtfWriter.closeGroup );
}
/**
* Write beginning of RtfField Result to OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldResultBegin(OutputStream out) throws IOException {
out.write( RtfWriter.openGroup );
out.write( RtfWriter.escape );
out.write( RtfWriter.fieldDisplay );
out.write( RtfWriter.delimiter );
}
/**
* Write end of RtfField Result to OutputStream.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldResultEnd(OutputStream out) throws IOException {
out.write( RtfWriter.delimiter );
out.write( RtfWriter.closeGroup );
}
/**
* Close the RtfField.
* @param out
* @throws IOException
*/
protected final void writeRtfFieldEnd(OutputStream out) throws IOException {
out.write( RtfWriter.closeGroup );
}
}
