/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 org.apache.click.extras.cayenne;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.click.Context;
import org.apache.click.control.Field;
import org.apache.click.control.FieldSet;
import org.apache.click.element.CssImport;
import org.apache.click.util.ClickUtils;
import org.apache.click.util.HtmlStringBuffer;
/**
* Provides Cayenne data aware tabbed Form control: <form method='POST'>.
* <p/>
* This control provides tab capabilities to the standard CayenneForm.
* For more information and examples please see:
* <ul>
* <li>{@link CayenneForm}</li>
* <li>{@link org.apache.click.extras.control.TabbedForm}</li>
* </ul>
*
* <a name="resources"></a>
* <h3>CSS and JavaScript resources</h3>
*
* In addition to <a href="../../../../../../click-api/org/apache/click/control/Form.html#resources">Form's resources</a>,
* the TabbedCayenneForm control makes use of the following resources (which Click
* automatically deploys to the application directory, <tt>/click</tt>):
*
* <ul>
* <li><tt>click/extras-control.css</tt></li>
* </ul>
*
* To import these TabbedCayenneForm files simply reference the variables
* <span class="blue">$headElements</span> and
* <span class="blue">$jsElements</span> in the page template.
*/
public class TabbedCayenneForm extends CayenneForm {
private static final long serialVersionUID = 1L;
// Instance Variables -----------------------------------------------------
/**
* The form HTML background color. The default background color is
* "#EFEFEF".
*/
protected String backgroundColor = "#EFEFEF";
/**
* The tab number to display (indexed from 1). The default tab number is 1.
*/
protected int displayTab = 1;
/** The tab sheet height HTML attribute value. */
protected String tabHeight = "";
/** The list of FieldSet tab sheets. */
protected List tabSheets = new ArrayList();
/** The tab sheet width HTML attribute value. */
protected String tabWidth = "";
/**
* The path of the tabbed form Velocity template to render. The
* default template path is
* <tt>"/org/apache/click/extras/control/TabbedForm.htm"</tt>.
*/
protected String template = "/org/apache/click/extras/control/TabbedForm.htm";
// Constructors -----------------------------------------------------------
/**
* Create a Tabbed Cayenne Form with the given form name and
* <tt>DataObject</tt> class.
*
* @param name the form name
* @param dataClass the <tt>DataObject</tt> class
*/
public TabbedCayenneForm(String name, Class dataClass) {
super(name, dataClass);
setErrorsStyle("");
setButtonStyle("");
}
/**
* Create a Tabbed Cayenne Form with the given <tt>DataObject</tt> class.
*
* @param dataClass the <tt>DataObject</tt> class
*/
public TabbedCayenneForm(Class dataClass) {
super(dataClass);
setErrorsStyle("");
setButtonStyle("");
}
/**
* Create a Tabbed Cayenne Form with no name or dataObjectClass.
* <p/>
* <b>Important Note</b> the form's name and dataObjectClass must be defined
* before it is valid.
*/
public TabbedCayenneForm() {
setErrorsStyle("");
setButtonStyle("");
}
// Properities ------------------------------------------------------------
/**
* Add the given FieldSet tab sheet to the form.
*
* @param tabSheet the FieldSet tab sheet to add
*/
public void addTabSheet(FieldSet tabSheet) {
if (tabSheet == null) {
throw new IllegalArgumentException("Null tabSeet parameter");
}
tabSheet.setShowBorder(false);
getTabSheets().add(tabSheet);
add(tabSheet);
}
/**
* Return the form HTML background color.
*
* @return the form HTML background color
*/
public String getBackgroundColor() {
return backgroundColor;
}
/**
* Set the form HTML background color.
*
* @param value the form HTML background color
*/
public void setBackgroundColor(String value) {
this.backgroundColor = value;
}
/**
* Return the number of the tab sheet to display (indexed from 1).
*
* @return the number of the tab sheet to display
*/
public int getDisplayTab() {
return displayTab;
}
/**
* Return the TabbedCayenneForm HTML HEAD elements for the following resource:
*
* <ul>
* <li><tt>click/extras-control.css</tt></li>
* </ul>
*
* Additionally all the {@link org.apache.click.control.Form#getHeadElements()
* Form import statements} are also returned.
*
* @see org.apache.click.Control#getHeadElements()
*
* @return the control list of HEAD elements to be included in the page
*/
@Override
public List getHeadElements() {
if (headElements == null) {
headElements = super.getHeadElements();
Context context = getContext();
String versionIndicator = ClickUtils.getResourceVersionIndicator(context);
headElements.add(new CssImport("/click/extras-control.css", versionIndicator));
}
return headElements;
}
/**
* Set the number of the tab sheet to display (indexed from 1).
*
* @param value the number of the tab sheet to display
*/
public void setDisplayTab(int value) {
this.displayTab = value;
}
/**
* Return the tab sheet height HTML attribute value.
*
* @return the tab sheet height attribute value
*/
public String getTabHeight() {
return tabHeight;
}
/**
* Set the tab sheet height HTML attribute value.
*
* @param value the tab sheet height attribute value
*/
public void setTabHeight(String value) {
this.tabHeight = value;
}
/**
* Return list FieldSet tab sheets.
*
* @return list FieldSet tab sheets
*/
public List getTabSheets() {
return tabSheets;
}
/**
* Return the tab sheet number for the given field name, indexed from 1.
* If the field is not found this method will return 1.
*
* @param fieldName the name of the form field
* @return the tab sheet number for the given field (indexed from 1)
*/
public int getTabSheetNumber(String fieldName) {
for (int i = 0; i < getTabSheets().size(); i++) {
FieldSet fieldSet = (FieldSet) getTabSheets().get(i);
if (fieldSet.getFields().containsKey(fieldName)) {
return i + 1;
}
}
return 1;
}
/**
* Return the tab sheet width HTML attribute value.
*
* @return the tab sheet width attribute value
*/
public String getTabWidth() {
return tabWidth;
}
/**
* Set the tab sheet width HTML attribute value.
*
* @param value the tab sheet width attribute value
*/
public void setTabWidth(String value) {
this.tabWidth = value;
}
/**
* Return the path of the Velocity template to render.
*
* @return the path of the Velocity template to render
*/
public String getTemplate() {
return template;
}
/**
* Set the path of the Velocity template to render.
*
* @param template the path of the Velocity template to render
*/
public void setTemplate(String template) {
this.template = template;
}
// Public Methods ---------------------------------------------------------
/**
* Process the Form request. In addition to the normal Form
* <tt>onProcess()</tt> processing, if the Form is invalid this method
* will display the tab sheet with the first field error.
*
* @return true to continue Page event processing or false otherwise
*/
@Override
public boolean onProcess() {
boolean result = super.onProcess();
if (!isValid()) {
List errorFields = getErrorFields();
if (!errorFields.isEmpty()) {
Field field = (Field) errorFields.get(0);
int sheetNumber = getTabSheetNumber(field.getName());
setDisplayTab(sheetNumber);
}
}
return result;
}
/**
* Render the HTML representation of the form.
* <p/>
* The form will be rendered using the classpath template:
*
* <pre class="codeConfig">
* /org/apache/click/extras/control/TabbedForm.htm </pre>
*
* If the form contains errors after processing, these errors will be
* rendered.
*
* @see #toString()
*
* @param buffer the specified buffer to render the control's output to
*/
@Override
public void render(HtmlStringBuffer buffer) {
applyMetaData();
Map model = new HashMap();
model.put("form", this);
buffer.append(getContext().renderTemplate(getTemplate(), model));
}
}