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/* ------------------------------------ JavaOnTracks Thibaut Colar tcolar-jot AT colar DOT net Artistic Licence 2.0 http://www.javaontracks.net ------------------------------------ */ package net.jot.web.forms; import java.util.Arrays; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Vector; import net.jot.logger.JOTLogger; import net.jot.web.JOTFlowRequest; import net.jot.web.forms.ui.JOTFormCaptchaField; import net.jot.web.forms.ui.JOTFormCategory; import net.jot.web.forms.ui.JOTFormField; import net.jot.web.forms.ui.JOTFormPasswordField; import net.jot.web.forms.ui.JOTFormSelectField; import net.jot.web.forms.ui.JOTFormSubmitButton; import net.jot.web.forms.ui.JOTFormTextField; import net.jot.web.forms.ui.JOTFormTextareaField; import net.jot.web.view.JOTFormParser; /** * This is a generic object you can implement/subclass to have a simple HTML form generated from data. * You can subclass it as-is or reimplement/copy methods to modify the generated Html * Or implement one of the subclasses such as JOTDBForm * You will want to add the needed css classes to your css file. * see bellow getCss() * @author thibautc * */ public abstract class JOTGeneratedForm extends JOTForm implements JOTGeneratedFormInterface { public static final String HAD_SUCCESS = "_GeneratedForm_success"; Vector items = new Vector(); String title = "Form"; String action = ""; Hashtable lastResults = null; /** @param request */ public abstract void layoutForm(JOTFlowRequest request); /** * Ovveride this to change the look. if you don't like the default. */ public String getHtml(JOTFlowRequest request) throws Exception { String html = getFormBowells(request); // process it like a regular form would. try { html = JOTFormParser.doElements(getAll(), html, null, null); } catch (Exception e) { JOTLogger.logException(JOTLogger.ERROR_LEVEL, this, "error parsing generated form.", e); } html = getJavascript() + getCss() + "<form jotclass=\"" + getClass().getName() + "\" action=\"" + action + "\" method=\"post\" accept-charset=\"UTF-8\">" + html; html += "</table></form>"; return html; } /** * Ovveride this if you want custom javascript */ protected String getJavascript() { return "\n<script type='text/javascript'>\n" + "function gen_form_toggle(objName){\n" + " var obj=document.getElementById(objName);\n" + " obj.style.display=(obj.style.display!='block')? 'block' : 'none';}\n" + "</script>\n"; } /** * Ovveride this to change the form CSS * It's probably best to have this css into your template and have this return an empty string. * This here are just default that would work independently of the template. */ protected String getCss() { return "<!-- add those style definitions to your css (example):\n\n " + ".gen_form_content_td{text-align:center}" + ".gen_form_title{text-align:center;background-color: rgb(18, 52, 86);font-family: \"Times New Roman\",\"Times\",serif;font-weight: bold;font-size: 140%}\n" + ".gen_form_section{text-align:center;background-color: rgb(68, 102, 136);font-family: \"Times New Roman\",\"Times\",serif;font-weight: bold;font-size: 120%}\n" + ".gen_form_content{overflow-x: hidden;overflow-y: hidden;background-color: rgb(52, 81, 120);font-size: 100%;padding-left-value: 0.1em;padding-right-value: 0.1em;padding-top: 0.1em;padding-bottom: 0.5em;border-left-style: solid;border-bottom-style: solid;border-right-style: solid;border-top-style: solid;border-bottom-color: black;border-right-color: black;color: rgb(244, 240, 216)}\n" + ".gen_form_item{padding-bottom:1em;}\n" + ".gen_form_error{background-color:#ffdddd;border-color:#ff0000;color:#ff0000}\n" + ".gen_form_success{background-color:#ddffdd;border-color:#00ff00;color:#005500}\n" + "input.gen_form_edit[type=\"text\"], input.gen_form_edit[type=\"password\"], select.gen_form_edit{font-size: 100%;border-top-width: 1px;border-right-width: 1px;border-bottom-width: 1px;border-left-width: 1px;border-top-style: solid;border-right-style: solid;border-bottom-style: solid;border-left-style: solid;border-top-color: #8cacbb;border-right-color: #8cacbb;border-bottom-color: #8cacbb;border-left-color: #8cacbb;min-height: 22px;color: black;vertical-align: middle;display: inline;background-color: #dee7ec;}\n" + "input.gen_form_edit[type=\"text\"], input.gen_form_edit[type=\"password\"]{height: 18px;max-height: 22px;}\n" + "input.gen_form_button{font-weight:bold;color: #c8d4bc;background-color: #123456;border-top-width: 1px;border-right-width: 1px;border-bottom-width: 1px;border-left-width: 1px;border-top-style: solid;border-right-style: solid;border-bottom-style: solid;border-left-style: solid;border-top-color: black;border-right-color: black;border-bottom-color: black;border-left-color: black;vertical-align: middle;text-decoration: none;font-size: 100%;cursor: pointer;height: 22px;max-height: 22px;min-height: 22px;display: inline;}\n" + ".gen_form_help{position:absolute;z-layer:99;border-width:2px;border-style:solid;background-color:#fafbc6;display:none;color:#000000;max-width:400px;min-width:100px;min-height:50px;padding: 5px;}\n" + ".gen_form_help_link{text-decoration: none;border-bottom-style: none;color: #77cccc;}\n" + ".gen_form_help_link:hover{cursor: help;text-decoration: none;border-bottom-style: none;color: #99ffff;}\n" + "-->"; } /** * Ovveride this to change the look of the description (a.k.a form field help CSS popup) * @param field * @param spanCpt * @return */ protected String getDescription(JOTFormField field, int spanCpt) { String desc = ""; if (field.getHelp() != null) { String spanId = "_help_span_" + spanCpt; desc += "<a class='gen_form_help_link' href='#' onClick=\"gen_form_toggle('" + spanId + "');\">" + field.getDescription() + "</a>"; desc += "<br><div id='" + spanId + "' class='gen_form_help'>" + field.getHelp() + "</div>"; } else { desc = field.getDescription(); } return desc; } /** * Generates HTMl for the inside of the form, ovveride for cutom html */ protected String getFormBowells(JOTFlowRequest request) throws Exception { String html = "<table class='gen_form_content'><tr><td colspan='2' style='text-align:center' class='gen_form_title'>" + title + "</td></tr>\n"; // success if (hasValidated()) { html += "<tr><td colspan='2' class='gen_form_success'>Saved Successfully!</td><tr>\n"; } // errors if (getErrors() != null && getErrors().size() > 0) { html += "<tr><td colspan='2' class='gen_form_error'>\n"; Iterator errors = getErrors().values().iterator(); while (errors.hasNext()) { html += "- " + (String) errors.next() + "<br>"; } html += "</td><tr>\n"; } int spanCpt = 0; for (int i = 0; i != items.size(); i++) { Object o = items.get(i); if (o instanceof JOTFormCategory) { String title = ((JOTFormCategory) o).getTitle(); html += "<tr><td colspan='2' class='gen_form_section'>" + title + "</td><tr>\n"; } else if (o instanceof JOTFormSubmitButton) { String title = ((JOTFormSubmitButton) o).getTitle(); html += "<tr><td colspan='2' class='gen_form_content_td'><input type='submit' class='gen_form_button' value='" + title + "'></td></tr>\n"; } else { JOTFormField field = (JOTFormField) o; String value = get(field.getName()).getValue(); if (value == null) { value = field.getDefaultValue(); } String description = getDescription(field, spanCpt); spanCpt++; // must be a field String head = "<tr><td class='gen_form_content_td' style='text-align:left'>" + description + "</td><td>\n"; String tail = "\n</td></tr>\n"; switch (field.getType()) { case JOTFormConst.INPUT_TEXT: int size = ((JOTFormTextField) o).getSize(); html += head + "<input name=\"" + field.getName() + "\" type=\"text\" class=\"gen_form_edit\" size=\"" + size + "\" value=\"" + value + "\">" + tail; break; case JOTFormConst.INPUT_CAPTCHA: int size2 = ((JOTFormCaptchaField) o).getSize(); html += head + "<img src='" + ((JOTFormCaptchaField) o).getCaptchcaUrl() + "' ALT='Too many attempts.'><br/>"; html += "Enter Code:<input name=\"" + field.getName() + "\" type=\"text\" class=\"gen_form_edit\" size=\"" + size2 + "\" value=\"" + value + "\">" + tail; break; case JOTFormConst.TEXTAREA: int cols = ((JOTFormTextareaField) o).getCols(); int rows = ((JOTFormTextareaField) o).getRows(); html += head + "<textarea name=\"" + field.getName() + "\" cols=\"" + cols + "\" class=\"gen_form_edit\" rows=\"" + rows + "\" >" + value + "</textarea>" + tail; break; case JOTFormConst.INPUT_CHECKBOX: String checked = field.getDefaultValue().equals("true") ? "CHECKED" : ""; html += head + "<input name=\"" + field.getName() + "\" type=\"checkbox\" class=\"gen_form_edit\" " + checked + ">" + tail; break; case JOTFormConst.INPUT_HIDDEN: html += head + "<input name=\"" + field.getName() + "\" type=\"hidden\" value=\"" + value + "\">" + tail; break; case JOTFormConst.INPUT_PASSWORD: int psize = ((JOTFormPasswordField) o).getSize(); html += head + "<input name=\"" + field.getName() + "\" type=\"password\" size=\"" + psize + "\" class=\"gen_form_edit\" value=\"" + value + "\">" + tail; break; case JOTFormConst.INPUT_RADIO: html += head + "<input name=\"" + field.getName() + "\" type=\"radio\" class=\"gen_form_edit\" " + field.getDefaultValue() + ">" + tail; break; case JOTFormConst.SELECT: JOTFormSelectField select = (JOTFormSelectField) o; html += head + "<select name=\"" + field.getName() + "\" class=\"gen_form_edit\" size=\"" + select.getSize() + "\"" + (select.getAllowMultiples() ? " MULTIPLE" : "") + ">"; String[] possibles = select.getPossibleValues(); String[] descriptions = select.getPossibleDescriptions(); String[] selected = value.split(","); List selectedList = Arrays.asList(selected); for (int j = 0; j != select.getPossibleValues().length; j++) { String val = possibles[j]; String desc = descriptions[j]; String selectString = selectedList.contains(val) ? JOTFormConst.VALUE_SELECTED : JOTFormConst.VALUE_UNSELECTED; html += "<option value=\"" + val + "\" " + selectString + ">" + desc + "\n"; } html += "</select>" + tail; break; } } } return html; } /** Adds a form field @param field */ public void addFormField(JOTFormField field) { items.add(field); defineField(field.getName(), field.getType()); if (field.getType() == JOTFormConst.SELECT) { JOTFormSelectField select = (JOTFormSelectField) field; JOTFormElement el = get(field.getName()); String[] options = select.getPossibleValues(); if (options != null) { for (int i = 0; i != options.length; i++) { el.set(options[i], new JOTFormElement(JOTFormConst.SELECT_OPTION)); } } } } /** Adds a form category (form section sperator with title) @param cat */ public void addCategory(JOTFormCategory cat) { items.add(cat); } /** The form submit button @param button */ public void addSubmitButton(JOTFormSubmitButton button) { items.add(button); } /** Mai title for the form, that appears at the top of the form @param title */ public void setFormTitle(String title) { this.title = title; } public void init(JOTFlowRequest request) throws Exception { items = new Vector(); refreshData(request); } public void refreshData(JOTFlowRequest request) throws Exception { items = new Vector(); layoutForm(request); } public String getFormAction() { return action; } /** Sets where the form should go to "action" Ex: setFormAction("submitform.do"); @param action */ public void setFormAction(String action) { this.action = action; } /** Implement this to validate the form Return a hashtable of errors, or null/empty hashtable if no errors @return @throws java.lang.Exception */ public abstract Hashtable validateForm(JOTFlowRequest request) throws Exception; public final Hashtable validate(JOTFlowRequest request) throws Exception { return validateForm(request); } /** Returns all the items (fields,categories,buttons etc..) composing this form. @return */ public Vector getItems() { return items; } }