/* ================================================================
* Cewolf : Chart enabling Web Objects Framework
* ================================================================
*
* Project Info: http://cewolf.sourceforge.net
* Project Lead: Guido Laures (guido@laures.de);
*
* (C) Copyright 2002, by Guido Laures
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package de.laures.cewolf.taglib.html;
import java.io.IOException;
import java.io.Serializable;
import java.io.Writer;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import de.laures.cewolf.taglib.tags.CewolfBodyTag;
/**
* Abstract base class which holds attribbutes common for all HTML 4.0 tags.
* @author Guido Laures
*/
public abstract class AbstractHTMLBaseTag extends CewolfBodyTag {
protected static final int UNDEFINED_INT = -1;
protected static final float UNDEFINED_FLOAT = -1.0f;
protected static final String UNDEFINED_STR = null;
/** Holds value of property ID. */
// protected String id = UNDEFINED_STR;
/** Holds value of property clazz. */
protected String clazz = UNDEFINED_STR;
/** Holds value of property style. */
protected String style = UNDEFINED_STR;
/** Holds value of property title. */
protected String title = UNDEFINED_STR;
/** Holds value of property lang. */
protected String lang = UNDEFINED_STR;
/** Holds value of property dir. */
protected String dir = UNDEFINED_STR;
/** Holds value of property onclick. */
protected String onclick = UNDEFINED_STR;
/** Holds value of property ondblclick. */
protected String ondblclick = UNDEFINED_STR;
/** Holds value of property onmousedown. */
protected String onmousedown = UNDEFINED_STR;
/** Holds value of property onmouseup. */
protected String onmouseup = UNDEFINED_STR;
/** Holds value of property onmouseover. */
protected String onmouseover = UNDEFINED_STR;
/** Holds value of property onmousemove. */
protected String onmousemove = UNDEFINED_STR;
/** Holds value of property onmouseout. */
protected String onmouseout = UNDEFINED_STR;
/** Holds value of property onkeypress. */
protected String onkeypress = UNDEFINED_STR;
/** Holds value of property onkeydown. */
protected String onkeydown = UNDEFINED_STR;
/** Holds value of property onkeyup. */
protected String onkeyup = UNDEFINED_STR;
public AbstractHTMLBaseTag(){
setId(UNDEFINED_STR);
}
protected abstract String getTagName();
protected abstract boolean hasBody();
protected abstract boolean isWellFormed();
protected void reset(){
this.clazz = UNDEFINED_STR;
this.dir = UNDEFINED_STR;
this.id = UNDEFINED_STR;
this.lang = UNDEFINED_STR;
this.onclick = UNDEFINED_STR;
this.ondblclick = UNDEFINED_STR;
this.onkeydown = UNDEFINED_STR;
this.onkeypress = UNDEFINED_STR;
this.onkeyup = UNDEFINED_STR;
this.onmousedown = UNDEFINED_STR;
this.onmousemove = UNDEFINED_STR;
this.onmouseout = UNDEFINED_STR;
this.onmouseover = UNDEFINED_STR;
this.onmouseup = UNDEFINED_STR;
this.style = UNDEFINED_STR;
this.title = UNDEFINED_STR;
}
public int doStartTag() throws JspException {
JspWriter writer = pageContext.getOut();
try {
writer.write("<" + getTagName().toLowerCase());
writeAttributes(writer);
if (hasBody()) {
writer.write(">");
return EVAL_PAGE;
} else {
return SKIP_BODY;
}
} catch (IOException ioe){
super.pageContext.getServletContext().log("", ioe);
throw new JspException(ioe.getMessage());
}
}
public int doEndTag() throws JspException {
JspWriter writer = pageContext.getOut();
try {
if (hasBody()) {
writer.write("</" + getTagName().toLowerCase() + ">");
} else {
if (isWellFormed()) {
writer.write(" /");
}
writer.write(">");
}
return doAfterEndTag(EVAL_PAGE);
} catch (IOException ioe) {
super.pageContext.getServletContext().log("", ioe);
throw new JspException(ioe.getMessage());
}
}
public void writeAttributes (Writer wr){
try {
appendAttributeDeclaration(wr, getId(), "id");
appendAttributeDeclaration(wr, this.clazz, "class");
appendAttributeDeclaration(wr, this.style, "style");
appendAttributeDeclaration(wr, this.onclick, "onclick");
appendAttributeDeclaration(wr, this.ondblclick, "ondblclick");
appendAttributeDeclaration(wr, this.onkeydown, "onkeydown");
appendAttributeDeclaration(wr, this.onkeypress, "onkeypress");
appendAttributeDeclaration(wr, this.onkeyup, "onkeyup");
appendAttributeDeclaration(wr, this.onmousedown, "onmousedown");
appendAttributeDeclaration(wr, this.onmousemove, "onmousemove");
appendAttributeDeclaration(wr, this.onmouseout, "onmouseout");
appendAttributeDeclaration(wr, this.onmouseover, "onmouseover");
appendAttributeDeclaration(wr, this.onmouseup, "onmouseup");
appendAttributeDeclaration(wr, this.title, "title");
appendAttributeDeclaration(wr, this.lang, "lang");
appendAttributeDeclaration(wr, this.dir, "dir");
} catch (IOException ioex) {
ioex.printStackTrace();
}
}
protected void appendAttributeDeclaration (Writer wr, String attr, String name) throws IOException {
// if (attr != UNDEFINED_STR) {
if (attr != null) {
wr.write(" " + name.toLowerCase() + "=\"" + attr + "\"");
}
}
protected void appendAttributeDeclaration (Writer wr, int attr, String name) throws IOException {
// does not call the according method for Strings to avoid additional String instantiation
if (attr != UNDEFINED_INT){
wr.write(" " + name.toLowerCase() + "=\"" + attr + "\"");
}
}
protected void appendAttributeDeclaration (Writer wr, float attr, String name) throws IOException {
// does not call the according method for Strings to avoid additional String instantiation
if (attr != UNDEFINED_FLOAT){
wr.write(" " + name.toLowerCase() + "=\"" + attr + "\"");
}
}
/** Setter for property clazz.
* @param clazz New value of property clazz.
*/
public void setClass(String clazz) {
this.clazz = clazz;
}
/** Setter for property style.
* @param style New value of property style.
*/
public void setStyle(String style) {
this.style = style;
}
/** Setter for property title.
* @param title New value of property title.
*/
public void setHtmltitle(String title) {
this.title = title;
}
/** Setter for property lang.
* @param lang New value of property lang.
*/
public void setLang(String lang) {
this.lang = lang;
}
/** Setter for property dir.
* @param dir New value of property dir.
*/
public void setDir(String dir) {
this.dir = dir;
}
/** Setter for property onclick.
* @param onclick New value of property onclick.
*/
public void setOnclick(String onclick) {
this.onclick = onclick;
}
/** Setter for property ondblclick.
* @param ondblclick New value of property ondblclick.
*/
public void setOndblclick(String ondblclick) {
this.ondblclick = ondblclick;
}
/** Setter for property onmousedown.
* @param onmousedown New value of property onmousedown.
*/
public void setOnmousedown(String onmousedown) {
this.onmousedown = onmousedown;
}
/** Setter for property onmouseup.
* @param onmouseup New value of property onmouseup.
*/
public void setOnmouseup(String onmouseup) {
this.onmouseup = onmouseup;
}
/** Setter for property onmouseover.
* @param onmouseover New value of property onmouseover.
*/
public void setOnmouseover(String onmouseover) {
this.onmouseover = onmouseover;
}
/** Setter for property onmousemove.
* @param onmousemove New value of property onmousemove.
*/
public void setOnmousemove(String onmousemove) {
this.onmousemove = onmousemove;
}
/** Setter for property onmouseout.
* @param onmouseout New value of property onmouseout.
*/
public void setOnmouseout(String onmouseout) {
this.onmouseout = onmouseout;
}
/** Setter for property onkeypress.
* @param onkeypress New value of property onkeypress.
*/
public void setOnkeypress(String onkeypress) {
this.onkeypress = onkeypress;
}
/** Setter for property onkeydown.
* @param onkeydown New value of property onkeydown.
*/
public void setOnkeydown(String onkeydown) {
this.onkeydown = onkeydown;
}
/** Setter for property onkeyup.
* @param onkeyup New value of property onkeyup.
*/
public void setOnkeyup(String onkeyup) {
this.onkeyup = onkeyup;
}
}