org.apache.tapestry.engine.NullWriter
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java.lang.Object
public class NullWriter
A IMarkupWriterthat does absolutely nothing; this is used during the rewind
phase of the request cycle when output is discarded anyway.
| Constructor Summary | |
|---|---|
NullWriter()
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| Method Summary | |
|---|---|
void |
appendAttribute(String name,
boolean value)
Appends a boolean attribute into the currently open tag. |
void |
appendAttribute(String name,
int value)
Appends an integer attribute to the current attribute with a matching name key, if one exists. |
void |
appendAttribute(String name,
String value)
Appends an attribute into the most recently opened tag. |
void |
appendAttributeRaw(String name,
String value)
Similar to IMarkupWriter.attribute(String, String) but no escaping of invalid elements is done for
the value. |
void |
attribute(String value)
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void |
attribute(String name,
boolean value)
Writes a boolean attribute into the currently open tag. |
void |
attribute(String name,
int value)
Writes an integer attribute into the currently open tag. |
void |
attribute(String name,
String value)
Writes an attribute into the most recently opened tag. |
void |
attributeRaw(String name,
String value)
Similar to IMarkupWriter.attribute(String, String)but no escaping of invalid elements is done for
the value. |
void |
begin(String name)
Closes any existing tag then starts a new element. |
void |
beginEmpty(String name)
Starts an element that will not later be matched with an end() call. |
boolean |
checkError()
Always returns false. |
void |
clearAttributes()
Removes all current attributes on the open tag, if any. |
void |
close()
Closes this IMarkupWriter. |
void |
closeTag()
Closes the most recently opened element by writing the '>' that ends it. |
void |
comment(String value)
Writes an XML/HTML comment. |
void |
end()
Ends the element most recently started by IMarkupWriter.begin(String). |
void |
end(String name)
Ends the most recently started element with the given name. |
void |
flush()
Forwards flush() to this IMarkupWriter's
PrintWriter. |
Attribute |
getAttribute(String name)
Gets the attribute matching name from the current open
tag, if it exists. |
String |
getBuffer()
Returns any makrup so far accumulated by the nested markup writer. |
String |
getContentType()
Returns the type of content generated by this response writer, as a MIME type. |
NestedMarkupWriter |
getNestedWriter()
Returns this: since a NullWriter doesn't actually do anything, one is as good
as another!. |
static IMarkupWriter |
getSharedInstance()
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boolean |
hasAttribute(String name)
Checks if the current tag has an attribute keyed off of name. |
void |
print(char value)
Prints a single character, or its equivalent entity. |
void |
print(char[] data,
int offset,
int length)
Version of IMarkupWriter.print(char[], int, int, boolean) that assumes filter is
enabled. |
void |
print(char[] data,
int offset,
int length,
boolean raw)
The primary print() method, used by most other methods. |
void |
print(int value)
Prints an integer. |
void |
print(String value)
As with IMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String. |
void |
print(String value,
boolean raw)
As with IMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String. |
void |
println()
Closes the open tag (if any), then prints a line seperator to the output stream. |
void |
printRaw(char[] buffer,
int offset,
int length)
Version of IMarkupWriter.print(char[], int, int, boolean)that assumes filter is enabled. |
void |
printRaw(String value)
As with IMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String. |
Attribute |
removeAttribute(String name)
Removes the attribute specified with a matching name if
one exists. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public NullWriter()
| Method Detail |
|---|
public static IMarkupWriter getSharedInstance()
public String getBuffer()
NestedMarkupWriterIMarkupWriter.printRaw(String),
with this content, on its parent markup writer.
Getting the buffer will close the writer.
getBuffer in interface NestedMarkupWriter
public void printRaw(char[] buffer,
int offset,
int length)
IMarkupWriterIMarkupWriter.print(char[], int, int, boolean)that assumes filter is enabled.
printRaw in interface IMarkupWriterpublic void printRaw(String value)
IMarkupWriterIMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String. Assumes filtering is disabled.
printRaw in interface IMarkupWriterpublic void println()
IMarkupWriter
println in interface IMarkupWriter
public void print(char[] data,
int offset,
int length)
IMarkupWriterIMarkupWriter.print(char[], int, int, boolean) that assumes filter is
enabled.
print in interface IMarkupWriterpublic void print(char value)
IMarkupWriterCloses any open tag.
print in interface IMarkupWriterpublic void print(int value)
IMarkupWriterCloses any open tag.
print in interface IMarkupWriterpublic void print(String value)
IMarkupWriterIMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String. Assumes filtering is enabled.
print in interface IMarkupWriterpublic NestedMarkupWriter getNestedWriter()
this: since a NullWriter doesn't actually do anything, one is as good
as another!.
getNestedWriter in interface IMarkupWriterpublic String getContentType()
IMarkupWriter
getContentType in interface IMarkupWriterpublic void flush()
IMarkupWriterflush() to this IMarkupWriter's
PrintWriter.
flush in interface IMarkupWriterpublic void end()
IMarkupWriterIMarkupWriter.begin(String). The name of the tag is
popped off of the active element stack and used to form an HTML close tag.
end in interface IMarkupWriterpublic void end(String name)
IMarkupWriter
end in interface IMarkupWriterpublic void comment(String value)
IMarkupWriter<!-- and -->, and provides a blank line after the
close of the comment.
Most characters are valid inside a comment, so no check of the contents is made
(much like IMarkupWriter.printRaw(String).
comment in interface IMarkupWriterpublic void closeTag()
IMarkupWriterattribute() methods may not be used until a new element is opened
with IMarkupWriter.begin(String)or or IMarkupWriter.beginEmpty(String).
closeTag in interface IMarkupWriterpublic void close()
IMarkupWriterIMarkupWriter. Close tags are written for any active elements.
The PrintWriter is then sent close(). A nested writer will
commit its buffer to its containing writer.
close in interface IMarkupWriterpublic boolean checkError()
checkError in interface IMarkupWriterpublic void beginEmpty(String name)
IMarkupWriterend() call. This is
useful for elements that do not need closing tags.
beginEmpty in interface IMarkupWriterpublic void begin(String name)
IMarkupWriter
begin in interface IMarkupWriter
public void attribute(String name,
int value)
IMarkupWriter
attribute in interface IMarkupWriter
public void attribute(String name,
String value)
IMarkupWriterIMarkupWriter.begin(String)and before any other kind of writing (which closes the tag).
The value may be null.
attribute in interface IMarkupWriter
public void attribute(String name,
boolean value)
IMarkupWriter
attribute in interface IMarkupWriter
public void attributeRaw(String name,
String value)
IMarkupWriterIMarkupWriter.attribute(String, String)but no escaping of invalid elements is done for
the value.
attributeRaw in interface IMarkupWriterpublic void attribute(String value)
public void appendAttribute(String name,
boolean value)
IMarkupWriter
appendAttribute in interface IMarkupWriter
public void appendAttribute(String name,
int value)
IMarkupWritername key, if one exists.
appendAttribute in interface IMarkupWriter
public void appendAttribute(String name,
String value)
IMarkupWriterIMarkupWriter.begin(String) and before any other kind of writing (which closes the tag).
The value may be null.
appendAttribute in interface IMarkupWriter
public void appendAttributeRaw(String name,
String value)
IMarkupWriterIMarkupWriter.attribute(String, String) but no escaping of invalid elements is done for
the value.
appendAttributeRaw in interface IMarkupWriterpublic Attribute getAttribute(String name)
IMarkupWritername from the current open
tag, if it exists.
getAttribute in interface IMarkupWritername - The attribute to get the value of by name.
public boolean hasAttribute(String name)
IMarkupWritername.
hasAttribute in interface IMarkupWritername - The name of the attribute to check for existance of.
public Attribute removeAttribute(String name)
IMarkupWritername if
one exists.
removeAttribute in interface IMarkupWritername - The attribute to remove.
public void clearAttributes()
IMarkupWriter
clearAttributes in interface IMarkupWriter
public void print(char[] data,
int offset,
int length,
boolean raw)
IMarkupWriterprint() method, used by most other methods.
Prints the character array, first closing any open tag. Problematic characters ('<', '>' and '&') are converted to appropriate entities.
Does nothing if data is null.
Closes any open tag.
print in interface IMarkupWriterdata - contains the characters to print, or null to not print anythingoffset - offset into the array to start printing fromlength - number of characters to printraw - if true, filtering is disabled
public void print(String value,
boolean raw)
IMarkupWriterIMarkupWriter.print(char[], int, int, boolean), but the data to print is defined by the
String.
print in interface IMarkupWriter
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