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java.lang.Object com.lowagie.text.DocWriter
public abstract class DocWriter
An abstract Writer
class for documents.
DocWriter
is the abstract class of several writers such
as PdfWriter
and HtmlWriter
.
A DocWriter
can be added as a DocListener
to a certain Document
by getting an instance (see method
getInstance()
in the specific writer-classes).
Every Element
added to the original Document
will be written to the OutputStream
of the listening
DocWriter
.
Document
,
DocListener
Field Summary | |
---|---|
protected boolean |
closeStream
Closes the stream on document close |
protected Document |
document
This is the document that has to be written. |
static byte |
EQUALS
This is some byte that is often used. |
static byte |
FORWARD
This is some byte that is often used. |
static byte |
GT
This is some byte that is often used. |
static byte |
LT
This is some byte that is often used. |
static byte |
NEWLINE
This is some byte that is often used. |
protected boolean |
open
Is the writer open for writing? |
protected OutputStreamCounter |
os
The outputstream of this writer. |
protected Rectangle |
pageSize
The pageSize. |
protected boolean |
pause
Do we have to pause all writing actions? |
static byte |
QUOTE
This is some byte that is often used. |
static byte |
SPACE
This is some byte that is often used. |
static byte |
TAB
This is some byte that is often used. |
Constructor Summary | |
---|---|
protected |
DocWriter()
|
protected |
DocWriter(Document document,
java.io.OutputStream os)
Constructs a DocWriter . |
Method Summary | |
---|---|
boolean |
add(Element element)
Signals that an Element was added to the Document . |
protected void |
addTabs(int indent)
Writes a number of tabs. |
void |
close()
Signals that the Document was closed and that no other
Elements will be added. |
void |
flush()
Flushes the BufferedOutputStream . |
static byte[] |
getISOBytes(java.lang.String text)
Converts a String into a Byte array
according to the ISO-8859-1 codepage. |
boolean |
isCloseStream()
Checks if the stream is to be closed on document close |
boolean |
isPaused()
Checks if writing is paused. |
boolean |
newPage()
Signals that an new page has to be started. |
void |
open()
Signals that the Document was opened. |
void |
pause()
Let the writer know that all writing has to be paused. |
void |
resetFooter()
Resets the footer of this document. |
void |
resetHeader()
Resets the header of this document. |
void |
resetPageCount()
Sets the page number to 0. |
void |
resume()
Let the writer know that writing may be resumed. |
void |
setCloseStream(boolean closeStream)
Sets the close state of the stream after document close |
void |
setFooter(HeaderFooter footer)
Changes the footer of this document. |
void |
setHeader(HeaderFooter header)
Changes the header of this document. |
boolean |
setMarginMirroring(boolean MarginMirroring)
Parameter that allows you to do left/right margin mirroring (odd/even pages) |
boolean |
setMarginMirroringTopBottom(boolean MarginMirroring)
Parameter that allows you to do top/bottom margin mirroring (odd/even pages) |
boolean |
setMargins(float marginLeft,
float marginRight,
float marginTop,
float marginBottom)
Sets the margins. |
void |
setPageCount(int pageN)
Sets the page number. |
boolean |
setPageSize(Rectangle pageSize)
Sets the pagesize. |
protected void |
write(java.lang.String string)
Writes a String to the OutputStream . |
protected void |
write(java.lang.String key,
java.lang.String value)
Writes a key-value pair to the outputstream. |
protected void |
writeEnd()
Writes an endtag to the outputstream. |
protected void |
writeEnd(java.lang.String tag)
Writes an endtag to the outputstream. |
protected boolean |
writeMarkupAttributes(java.util.Properties markup)
Writes the markup attributes of the specified MarkupAttributes
object to the OutputStream . |
protected void |
writeStart(java.lang.String tag)
Writes a starttag to the outputstream. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final byte NEWLINE
public static final byte TAB
public static final byte LT
public static final byte SPACE
public static final byte EQUALS
public static final byte QUOTE
public static final byte GT
public static final byte FORWARD
protected Rectangle pageSize
protected Document document
protected OutputStreamCounter os
protected boolean open
protected boolean pause
protected boolean closeStream
Constructor Detail |
---|
protected DocWriter()
protected DocWriter(Document document, java.io.OutputStream os)
DocWriter
.
document
- The Document
that has to be writtenos
- The OutputStream
the writer has to write to.Method Detail |
---|
public boolean add(Element element) throws DocumentException
Element
was added to the Document
.
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class.
add
in interface ElementListener
element
- A high level object to add
false
DocumentException
- when a document isn't open yet, or has been closed
public void open()
Document
was opened.
open
in interface DocListener
public boolean setPageSize(Rectangle pageSize)
setPageSize
in interface DocListener
pageSize
- the new pagesize
boolean
public boolean setMargins(float marginLeft, float marginRight, float marginTop, float marginBottom)
This does nothing. Has to be overridden if needed.
setMargins
in interface DocListener
marginLeft
- the margin on the leftmarginRight
- the margin on the rightmarginTop
- the margin on the topmarginBottom
- the margin on the bottom
false
public boolean newPage()
This does nothing. Has to be overridden if needed.
newPage
in interface DocListener
true
if the page was added, false
if not.public void setHeader(HeaderFooter header)
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
headers.
setHeader
in interface DocListener
header
- the new header
public void resetHeader()
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
headers.
resetHeader
in interface DocListener
public void setFooter(HeaderFooter footer)
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
footers.
setFooter
in interface DocListener
footer
- the new footer
public void resetFooter()
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
footers.
resetFooter
in interface DocListener
public void resetPageCount()
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
pagenumbers.
resetPageCount
in interface DocListener
public void setPageCount(int pageN)
This method should be overridden in the specific
DocWriter
classes
derived from this abstract class if they actually support the use of
pagenumbers.
setPageCount
in interface DocListener
pageN
- the new page number
public void close()
Document
was closed and that no other
Elements
will be added.
close
in interface DocListener
public static final byte[] getISOBytes(java.lang.String text)
String
into a Byte
array
according to the ISO-8859-1 codepage.
text
- the text to be converted
public void pause()
public boolean isPaused()
true
if writing temporarily has to be paused, false
otherwise.public void resume()
public void flush()
BufferedOutputStream
.
protected void write(java.lang.String string) throws java.io.IOException
String
to the OutputStream
.
string
- the String
to write
java.io.IOException
protected void addTabs(int indent) throws java.io.IOException
indent
- the number of tabs to add
java.io.IOException
protected void write(java.lang.String key, java.lang.String value) throws java.io.IOException
key
- the name of an attributevalue
- the value of an attribute
java.io.IOException
protected void writeStart(java.lang.String tag) throws java.io.IOException
tag
- the name of the tag
java.io.IOException
protected void writeEnd(java.lang.String tag) throws java.io.IOException
tag
- the name of the tag
java.io.IOException
protected void writeEnd() throws java.io.IOException
java.io.IOException
protected boolean writeMarkupAttributes(java.util.Properties markup) throws java.io.IOException
MarkupAttributes
object to the OutputStream
.
markup
- a Properties
collection to write.
java.io.IOException
public boolean isCloseStream()
public void setCloseStream(boolean closeStream)
closeStream
- true if the stream is closed on document closepublic boolean setMarginMirroring(boolean MarginMirroring)
DocListener
setMarginMirroring
in interface DocListener
DocListener.setMarginMirroring(boolean)
public boolean setMarginMirroringTopBottom(boolean MarginMirroring)
DocListener
setMarginMirroringTopBottom
in interface DocListener
DocListener.setMarginMirroring(boolean)
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