/**
* Licensed under the Common Development and Distribution License,
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.sun.com/cddl/
*
* 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 com.sun.facelets.compiler;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import javax.el.ELException;
import com.sun.facelets.FaceletException;
import com.sun.facelets.FaceletHandler;
import com.sun.facelets.el.ELText;
import com.sun.facelets.tag.CompositeFaceletHandler;
import com.sun.facelets.tag.Tag;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.TagException;
/**
*
* @author Jacob Hookom
* @version $Id: TextUnit.java,v 1.11 2007/09/24 06:33:29 rlubke Exp $
*/
final class TextUnit extends CompilationUnit {
private final StringBuffer buffer;
private final StringBuffer textBuffer;
private final List instructionBuffer;
private final Stack tags;
private final List children;
private boolean startTagOpen;
private final String alias;
private final String id;
public TextUnit(String alias, String id) {
this.alias = alias;
this.id = id;
this.buffer = new StringBuffer();
this.textBuffer = new StringBuffer();
this.instructionBuffer = new ArrayList();
this.tags = new Stack();
this.children = new ArrayList();
this.startTagOpen = false;
}
public FaceletHandler createFaceletHandler() {
this.flushBufferToConfig(true);
if (this.children.size() == 0) {
return LEAF;
}
FaceletHandler[] h = new FaceletHandler[this.children.size()];
Object obj;
for (int i = 0; i < h.length; i++) {
obj = this.children.get(i);
if (obj instanceof FaceletHandler) {
h[i] = (FaceletHandler) obj;
} else {
h[i] = ((CompilationUnit) obj).createFaceletHandler();
}
}
if (h.length == 1) {
return h[0];
}
return new CompositeFaceletHandler(h);
}
private void addInstruction(Instruction instruction) {
this.flushTextBuffer(false);
this.instructionBuffer.add(instruction);
}
private void flushTextBuffer(boolean child) {
if (this.textBuffer.length() > 0) {
String s = this.textBuffer.toString();
if (child) {
s = trimRight(s);
}
if (s.length() > 0) {
ELText txt = ELText.parse(s);
if (txt != null) {
if (txt.isLiteral()) {
this.instructionBuffer.add(new LiteralTextInstruction(
txt.toString()));
} else {
this.instructionBuffer.add(new TextInstruction(
this.alias, txt));
}
}
}
}
this.textBuffer.setLength(0);
}
public void write(String text) {
this.finishStartTag();
this.textBuffer.append(text);
this.buffer.append(text);
}
public void writeInstruction(String text) {
this.finishStartTag();
ELText el = ELText.parse(text);
if (el.isLiteral()) {
this.addInstruction(new LiteralXMLInstruction(text));
} else {
this.addInstruction(new XMLInstruction(el));
}
this.buffer.append(text);
}
public void writeComment(String text) {
this.finishStartTag();
ELText el = ELText.parse(text);
if (el.isLiteral()) {
this.addInstruction(new LiteralCommentInstruction(text));
} else {
this.addInstruction(new CommentInstruction(el));
}
this.buffer.append("<!--" + text + "-->");
}
public void startTag(Tag tag) {
// finish any previously written tags
this.finishStartTag();
// push this tag onto the stack
this.tags.push(tag);
// write it out
this.buffer.append('<');
this.buffer.append(tag.getQName());
this.addInstruction(new StartElementInstruction(tag.getQName()));
TagAttribute[] attrs = tag.getAttributes().getAll();
if (attrs.length > 0) {
for (int i = 0; i < attrs.length; i++) {
String qname = attrs[i].getQName();
String value = attrs[i].getValue();
this.buffer.append(' ').append(qname).append("=\"").append(
value).append("\"");
ELText txt = ELText.parse(value);
if (txt != null) {
if (txt.isLiteral()) {
this.addInstruction(new LiteralAttributeInstruction(
qname, txt.toString()));
} else {
this.addInstruction(new AttributeInstruction(
this.alias, qname, txt));
}
}
}
}
// notify that we have an open tag
this.startTagOpen = true;
}
private void finishStartTag() {
if (this.tags.size() > 0 && this.startTagOpen) {
this.buffer.append(">");
this.startTagOpen = false;
}
}
public void endTag() {
Tag tag = (Tag) this.tags.pop();
this.addInstruction(new EndElementInstruction(tag.getQName()));
if (this.startTagOpen) {
this.buffer.append("/>");
this.startTagOpen = false;
} else {
this.buffer.append("</").append(tag.getQName()).append('>');
}
}
public void addChild(CompilationUnit unit) {
// if we are adding some other kind of unit
// then we need to capture our buffer into a UITextHandler
this.finishStartTag();
this.flushBufferToConfig(true);
this.children.add(unit);
}
protected void flushBufferToConfig(boolean child) {
// NEW IMPLEMENTATION
if (true) {
this.flushTextBuffer(child);
int size = this.instructionBuffer.size();
if (size > 0) {
try {
String s = this.buffer.toString();
if (child)
s = trimRight(s);
ELText txt = ELText.parse(s);
if (txt != null) {
Instruction[] instructions = (Instruction[]) this.instructionBuffer
.toArray(new Instruction[size]);
this.children.add(new UIInstructionHandler(this.alias,
this.id,
instructions,
txt));
this.instructionBuffer.clear();
}
} catch (ELException e) {
if (this.tags.size() > 0) {
throw new TagException((Tag) this.tags.peek(), e
.getMessage());
} else {
throw new ELException(this.alias + ": "
+ e.getMessage(), e.getCause());
}
}
}
// KEEP THESE SEPARATE SO LOGIC DOESN'T GET FUBARED
} else if (this.buffer.length() > 0) {
String s = this.buffer.toString();
if (s.trim().length() > 0) {
if (child) {
s = trimRight(s);
}
if (s.length() > 0) {
try {
ELText txt = ELText.parse(s);
if (txt != null) {
if (txt.isLiteral()) {
this.children.add(new UILiteralTextHandler(txt
.toString()));
} else {
this.children.add(new UITextHandler(this.alias,
txt));
}
}
} catch (ELException e) {
if (this.tags.size() > 0) {
throw new TagException((Tag) this.tags.peek(), e
.getMessage());
} else {
throw new ELException(this.alias + ": "
+ e.getMessage(), e.getCause());
}
}
}
}
}
// ALWAYS CLEAR FOR BOTH IMPL
this.buffer.setLength(0);
}
public boolean isClosed() {
return this.tags.empty();
}
private final static String trimRight(String s) {
int i = s.length() - 1;
while (i >= 0 && Character.isWhitespace(s.charAt(i))) {
i--;
}
if (i == s.length() - 1) {
return s;
} else {
return s.substring(0, i + 1);
}
}
public String toString() {
return "TextUnit[" + this.children.size() + "]";
}
}