/* * 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 . * * 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 the Venice Web Community System. * * The Initial Developer of the Original Code is Eric J. Bowersox , * for Silverwrist Design Studios. Portions created by Eric J. Bowersox are * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios. All Rights Reserved. * * Contributor(s): */ package com.silverwrist.venice.servlets.format; import java.util.*; import java.io.Writer; import java.io.IOException; import javax.servlet.ServletRequest; import com.silverwrist.util.StringUtil; import com.silverwrist.venice.ValidationException; public class ContentDialog implements Cloneable, ContentRender, ColorSelectors { /*-------------------------------------------------------------------------------- * Attributes *-------------------------------------------------------------------------------- */ private String title; // dialog title private String subtitle; // dialog subtitle private String formname; // name of the built-in form private String action; // action applet private String error_message = null; // error message private String instructions = null; // instructions private Hashtable hidden_fields; // list of all hidden fields & values private Hashtable command_buttons; // command buttons by name private Vector command_order; // command buttons in order (left to right) private Hashtable form_fields; // form fields by name private Vector form_order; // form fields in order (top to bottom) /*-------------------------------------------------------------------------------- * Constructors *-------------------------------------------------------------------------------- */ public ContentDialog(String title, String subtitle, String formname, String action) { this.title = title; this.subtitle = subtitle; this.formname = formname; this.action = action; hidden_fields = new Hashtable(); command_buttons = new Hashtable(); command_order = new Vector(); form_fields = new Hashtable(); form_order = new Vector(); } // end constructor protected ContentDialog(ContentDialog other) { this.title = other.title; this.subtitle = other.subtitle; this.formname = other.formname; this.action = other.action; this.instructions = other.instructions; this.hidden_fields = (Hashtable)(other.hidden_fields.clone()); command_buttons = new Hashtable(); command_order = new Vector(); form_fields = new Hashtable(); form_order = new Vector(); Enumeration enum = other.command_order.elements(); while (enum.hasMoreElements()) { // share the command buttons with the new dialog CDCommandButton button = (CDCommandButton)(enum.nextElement()); addCommandButton(button); } // end while enum = other.form_order.elements(); while (enum.hasMoreElements()) { // clone the form fields and put them in the new dialog CDFormField field = (CDFormField)(enum.nextElement()); addFormField(field.duplicate()); } // end while } // end constructor /*-------------------------------------------------------------------------------- * Internal functions *-------------------------------------------------------------------------------- */ private boolean anyRequired() { boolean rc = false; Enumeration enum = form_order.elements(); while (!rc && enum.hasMoreElements()) { // look for the first field that's marked "required" CDFormField fld = (CDFormField)(enum.nextElement()); rc = fld.isRequired(); } // end while return rc; } // end anyRequired /*-------------------------------------------------------------------------------- * Overrideable operations *-------------------------------------------------------------------------------- */ protected void validateWholeForm() throws ValidationException { // do nothing at this level } // end validateWholeForm /*-------------------------------------------------------------------------------- * Implementations from interface VeniceContent *-------------------------------------------------------------------------------- */ public String getPageTitle(RenderData rdat) { return title; } // end getPageTitle /*-------------------------------------------------------------------------------- * Implementations from interface ContentRender *-------------------------------------------------------------------------------- */ public void renderHere(Writer out, RenderData rdat) throws IOException { Enumeration enum; // Output the content header rdat.writeContentHeader(out,title,subtitle); if (error_message!=null) { // print the error message out.write("" + "
\n" + rdat.getStdFontTag(CONTENT_ERROR,3) + ""); out.write(StringUtil.encodeHTML(error_message)); out.write("\n
\n"); } // end if // Output the start of the form out.write("
" + rdat.getStdFontTag(CONTENT_FOREGROUND,2) + "\n"); enum = hidden_fields.keys(); while (enum.hasMoreElements()) { // output all the hidden fields String name = (String)(enum.nextElement()); String value = (String)(hidden_fields.get(name)); out.write("\n"); } // end while if (instructions!=null) out.write(StringUtil.encodeHTML(instructions)); if (anyRequired()) { // print the "required fields" instruction if (instructions!=null) out.write("

"); out.write("Required fields are marked with a " + rdat.getRequiredBullet() + ".
\n"); } // end if else if (instructions!=null) out.write("
\n"); out.write("\n"); if (form_order.size()>0) { // render the form elements now enum = form_order.elements(); while (enum.hasMoreElements()) { // render all the fields in order CDFormField fld = (CDFormField)(enum.nextElement()); fld.renderHere(out,rdat); } // end while } // end if out.write("
\n"); if (command_order.size()>0) { // render the command buttons at the bottom boolean is_first = true; out.write("

"); enum = command_order.elements(); while (enum.hasMoreElements()) { // render each of the command buttons in the list CDCommandButton button = (CDCommandButton)(enum.nextElement()); if (is_first) is_first = false; else out.write("  "); button.renderHere(out,rdat); } // end while out.write("
\n"); } // end if out.write("
\n"); } // end renderHere /*-------------------------------------------------------------------------------- * Operations usable only from derived classes *-------------------------------------------------------------------------------- */ protected CDFormField modifyField(String name) { return (CDFormField)(form_fields.get(name)); } // end modifyField /*-------------------------------------------------------------------------------- * External operations *-------------------------------------------------------------------------------- */ public void setTitle(String title) { this.title = title; } // end setTitle public void setSubtitle(String subtitle) { this.subtitle = subtitle; } // end setSubtitle public void setErrorMessage(String message) { this.error_message = message; } // end setErrorMessage public void setInstructions(String instructions) { this.instructions = StringUtil.encodeHTML(instructions); } // end setInstructions public void setHiddenField(String name, String value) { if (value!=null) hidden_fields.put(name,value); } // end setHiddenField public void removeHiddenField(String name) { hidden_fields.remove(name); } // end removeHiddenField public void addCommandButton(CDCommandButton button, int position) { command_buttons.put(button.getName(),button); if (position<0) command_order.addElement(button); else command_order.insertElementAt(button,position); } // end addCommandButton public void addCommandButton(CDCommandButton button) { addCommandButton(button,-1); } // end addCommandButton public void addFormField(CDFormField field, int position) { String name = field.getName(); if (name!=null) form_fields.put(name,field); if (position<0) form_order.addElement(field); else form_order.insertElementAt(field,position); } // end addFormField public void addFormField(CDFormField field) { addFormField(field,-1); } // end addFormField public boolean isButtonClicked(ServletRequest request, String name) { CDCommandButton button = (CDCommandButton)(command_buttons.get(name)); if (button!=null) return button.isClicked(request); // now look in all form fields for the embedded button Enumeration enum = form_order.elements(); while (enum.hasMoreElements()) { // zap the state of the fields CDFormField fld = (CDFormField)(enum.nextElement()); button = fld.findButton(name); if (button!=null) return button.isClicked(request); } // end while return false; } // end isButtonClicked public void loadValues(ServletRequest request) { // Look for the values of the hidden fields first. Enumeration enum = hidden_fields.keys(); Hashtable updates = new Hashtable(); while (enum.hasMoreElements()) { // get updates to the hidden field values String name = (String)(enum.nextElement()); String value = request.getParameter(name); if (value!=null) updates.put(name,value); } // end while hidden_fields.putAll(updates); // make all the updates be recognized // Now look for the values of the form fields. enum = form_order.elements(); while (enum.hasMoreElements()) { // look for the first field that's marked "required" CDFormField fld = (CDFormField)(enum.nextElement()); String name = fld.getName(); if (name!=null) // load the parameter value fld.setValue(request.getParameter(name)); } // end while } // end loadValues public void clearAllFields() { Enumeration enum = form_order.elements(); while (enum.hasMoreElements()) { // zap the state of the fields CDFormField fld = (CDFormField)(enum.nextElement()); fld.setValue(null); } // end while } // end clearAllFields public String getFieldValue(String fieldname) { String value = (String)(hidden_fields.get(fieldname)); if (value!=null) return value; CDFormField fld = (CDFormField)(form_fields.get(fieldname)); if (fld!=null) return fld.getValue(); else return null; } // end getFieldValue public void setFieldValue(String fieldname, String value) { CDFormField fld = (CDFormField)(form_fields.get(fieldname)); if (fld!=null) fld.setValue(value); else if (value!=null) setHiddenField(fieldname,value); } // end setFieldValue public boolean isFieldEnabled(String fieldname) { CDFormField fld = (CDFormField)(form_fields.get(fieldname)); if (fld!=null) return fld.isEnabled(); else return false; } // end isFieldEnabled public void setFieldEnabled(String fieldname, boolean flag) { CDFormField fld = (CDFormField)(form_fields.get(fieldname)); if (fld!=null) fld.setEnabled(flag); } // end setFieldEnabled public void validate() throws ValidationException { // validate each field in isolation Enumeration enum = form_order.elements(); while (enum.hasMoreElements()) { // look for the first field that's marked "required" CDFormField fld = (CDFormField)(enum.nextElement()); fld.validate(); } // end while // now validate the form as a whole validateWholeForm(); } // end validate public Object clone() { return new ContentDialog(this); } // end clone } // end class Dialog