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package fr.improve.struts.taglib.layout.collection;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import org.apache.struts.taglib.html.Constants;
import org.apache.struts.util.RequestUtils;
import fr.improve.struts.taglib.layout.collection.header.MultiLevelHeader;
import fr.improve.struts.taglib.layout.el.Expression;
import fr.improve.struts.taglib.layout.event.StaticCodeIncludeLayoutEvent;
import fr.improve.struts.taglib.layout.event.StaticCodeIncludeListener;
import fr.improve.struts.taglib.layout.sort.SortUtil;
import fr.improve.struts.taglib.layout.util.HTMLUtils;
import fr.improve.struts.taglib.layout.util.IFilterableHeaderRenderer;
import fr.improve.struts.taglib.layout.util.IFooterRenderer;
import fr.improve.struts.taglib.layout.util.IMathCollectionRenderer;
import fr.improve.struts.taglib.layout.util.IMultiLevelHeaderRenderer;
import fr.improve.struts.taglib.layout.util.ISelectionCellRenderer;
import fr.improve.struts.taglib.layout.util.LayoutUtils;
/**
* This class is responsible for displaying the collection.<br />
* Actually, the rendering is done by another class implementing the
* CollectionInterface. This class just computes differents parameters (headers
* and items).
*
* @author: Jean-Noel Ribette
**/
public class CollectionTag extends BaseCollectionTag implements StaticCodeIncludeListener
{
/**
* Math class
*/
static Class mathClass;
static
{
try
{
mathClass = RequestUtils.applicationClass("org.apache.commons.math.stat.StatUtils");
}
catch (ClassNotFoundException e)
{
// Math class is not available.
}
}
/**
* String of the static code to generate.
*/
private String staticCode = "";
/**
* Map of the numbers for operation
*/
protected Map numbers = new HashMap();
/*
* (non-Javadoc)
*
* @see fr.improve.struts.taglib.layout.BodyLayoutTagSupport#reset()
*/
protected void reset()
{
numbers.clear();
super.reset();
}
/**
* Store in a List the value of the cells for selected column in a map
*
* @author Damien Viel
* @version 1.0
* @throws JspException
*
*/
protected void storeMathData(double in_value) throws JspException
{
if (!isFirst())
{
int lc_ligne = getIndex();
int lc_col = getColumn();
Object bean = getBean();
String property = ((ItemContext) headers.get(lc_col)).getProperty();
String mathOp = ((ItemContext) headers.get(lc_col)).getMathOperation();
if (mathOp != null)
{
String key = String.valueOf(lc_col);
if (!numbers.containsKey(key))
{
double[] lc_list = new double[size]; // ???
numbers.put(key, lc_list);
}
double[] lc_list = (double[]) numbers.get(key);
lc_list[index - 1] = in_value;
}
}
}
/**
*
* @author Damien Viel
* @param in_operation
* @param in_data
* @return
* @throws JspException
*/
protected String doMathOperation(String in_operation, double[] in_data, String in_mathPattern) throws JspException
{
if (in_data != null && in_operation != null && in_operation.length() > 0)
{
double total = computeMathResult(in_operation, in_data);
if (in_mathPattern != null)
{
NumberFormat lc_format = new DecimalFormat(in_mathPattern);
return lc_format.format(total);
}
return String.valueOf(total);
}
return null;
}
/**
*
* @author JNRibette
* @param in_operation
* @param in_data
* @return
* @throws JspException
*/
protected double computeMathResult(String in_operation, double[] in_data) throws JspException
{
if (mathClass == null)
{
throw new IllegalStateException("Math operation is not available, please put commons-math.jar in the classpath");
}
Method m;
try
{
m = mathClass.getMethod(in_operation, new Class[] { double[].class });
}
catch (NoSuchMethodException e)
{
throw new IllegalArgumentException("Math operation " + in_operation + " is not supported");
}
Double result = null;
try
{
result = (Double) m.invoke(null, new Object[] { in_data });
}
catch (InvocationTargetException e)
{
// TODO log
throw new JspException("Math operation " + in_operation + " failed : " + e.getMessage());
}
catch (IllegalAccessException e)
{
// TODO log
throw new JspException("Math operation " + in_operation + " failed : " + e.getMessage());
}
return result.doubleValue();
// return new
// BigDecimal(result.doubleValue()).setScale(3,BigDecimal.ROUND_HALF_UP).doubleValue();
}
/**
* add an item.
*/
protected void addItem(StringBuffer in_buffer, String in_item, String in_url, String in_target, String in_onclick) throws JspException
{
// Display the table cell.
if (in_url == null)
{
renderItem(in_buffer, in_item);
}
else
{
StringBuffer lc_buffer = new StringBuffer();
String lc_item = in_item;
if (sortType == SORT_JAVASCRIPT)
{
if (lc_item.startsWith("<!--"))
{
// if we are sorting the collection on the client, make sure
// the resulting item still begin with the comment
// which may be used to sort the items.
int lc_index = lc_item.indexOf("-->");
lc_buffer.append(lc_item.substring(0, lc_index + 3));
lc_item = lc_item.substring(lc_index + 3);
}
else
{
// same concern, in case there is no preliminar comment.
lc_buffer.append("<!-- ");
lc_buffer.append(in_item);
lc_buffer.append("-->");
}
}
lc_buffer.append("<a href=\"");
lc_buffer.append(((HttpServletResponse) pageContext.getResponse()).encodeURL(in_url));
if (in_onclick != null)
{
lc_buffer.append("\" onclick=\"");
lc_buffer.append(Expression.evaluate(in_onclick, pageContext));
}
if (in_target != null)
{
lc_buffer.append("\" target=\"");
lc_buffer.append(in_target);
}
String lc_styleClass = styleClass;
if (tempStyleClass != null)
lc_styleClass = tempStyleClass;
if (lc_styleClass != null)
{
lc_buffer.append("\" class=\"");
lc_buffer.append(lc_styleClass);
}
lc_buffer.append("\">");
lc_buffer.append(lc_item);
lc_buffer.append("</a>");
renderItem(in_buffer, lc_buffer.toString());
}
}
protected void renderBlankCollection(StringBuffer in_buffer) throws JspException
{
panel.doPrintEmptyCollection(in_buffer, LayoutUtils.getLabel(pageContext, getBundle(), emptyKey, null, false));
}
// render the end of the table
protected void renderEnd(StringBuffer buffer) throws JspException
{
renderMathData(buffer);
renderFooter(buffer);
panel.doEndPanel(buffer);
renderStaticCode(buffer);
}
/**
* Render the result for the specified math operation
*
* @param in_buffer
* @throws JspException
*/
protected void renderMathData(StringBuffer in_buffer) throws JspException
{
if (!(panel instanceof IMathCollectionRenderer))
{
return;
}
IMathCollectionRenderer lc_renderer = (IMathCollectionRenderer) panel;
// did we start generated footer ?
boolean started = false;
// number of null consecutive footer.
int consecutiveNull = 0;
String uniqueParam = mathOperationId;
int lc_nbOfSpan = 0;
for (int i = 0; i < headers.size(); i++)
{
ItemContext lc_header = (ItemContext) headers.get(i);
String lc_operation = lc_header.getMathOperation();
String lc_mathStyleClass = tempStyleClass != null ? tempStyleClass : styleClass;
String lc_mathPattern = lc_header.getMathPattern();
double[] data = (double[]) numbers.get(String.valueOf(i));
String lc_data = doMathOperation(lc_operation, data, lc_mathPattern);
// Unique identifier for the result cell
String resultId = CollectionInputTag.MATH_ID_PREFIX + "t" + uniqueParam + "r" + i;
// If there is no math operation to do
if (lc_operation == null)
{
consecutiveNull++;
}
else
{
if (!started)
{
// Start rendering result !
lc_renderer.startMathData(in_buffer);
started = true;
}
// Generate an empty td with colspan = number of consecutive
// null.
if (consecutiveNull > 0)
{
lc_renderer.renderMathData(in_buffer, " ", consecutiveNull, null, lc_mathStyleClass);
lc_nbOfSpan = lc_nbOfSpan + consecutiveNull;
}
// Generate the result cell.
lc_renderer.renderMathData(in_buffer, lc_data, 1, resultId, lc_mathStyleClass);
consecutiveNull = 0;
lc_nbOfSpan = lc_nbOfSpan + 1;
}
}
if (started)
{
if (headers.size() - lc_nbOfSpan > 0)
{
lc_renderer.renderMathData(in_buffer, " ", headers.size() - lc_nbOfSpan, null, styleClass);
}
// There were result, close.
lc_renderer.endMathData(in_buffer);
}
}
/**
* Render the footer of the collection.
*/
protected void renderFooter(StringBuffer in_buffer) throws JspException
{
// Get IFooterRenderer
if (!(panel instanceof IFooterRenderer))
{
return;
}
IFooterRenderer lc_renderer = (IFooterRenderer) panel;
// did we start generated footer ?
boolean started = false;
// number of null consecutive footer.
int consecutiveNull = 0;
for (int i = 0; i < headers.size(); i++)
{
ItemContext lc_header = (ItemContext) headers.get(i);
String lc_footer = lc_header.getFooter();
if (lc_footer == null)
{
consecutiveNull++;
}
else
{
if (!started)
{
// Start rendering footer !
lc_renderer.startFooter(in_buffer);
started = true;
}
// Generate an empty td with colspan = number of consecutive
// null.
if (consecutiveNull > 0)
{
lc_renderer.printFooterElement(in_buffer, " ", consecutiveNull);
}
// Generate the footer.
Object[] lc_args = new Object[5];
lc_args[0] = Expression.evaluate(lc_header.getFooterArg0(), pageContext);
lc_args[1] = Expression.evaluate(lc_header.getFooterArg1(), pageContext);
String lc_label = LayoutUtils.getLabel(pageContext, getBundle(), lc_footer, lc_args, false);
lc_renderer.printFooterElement(in_buffer, lc_label, 1);
consecutiveNull = 0;
}
}
if (started)
{
// There were footer, close.
lc_renderer.endFooter(in_buffer);
}
}
/**
* Print a column title to the buffer. (mono level header)
*/
protected void renderHeader(StringBuffer buffer, ItemContext in_header) throws JspException
{
// Compute the title.
String lc_key = in_header.getTitle();
String lc_arg0 = Expression.evaluate(in_header.getArg0(), pageContext);
String lc_arg1 = Expression.evaluate(in_header.getArg1(), pageContext);
Object[] lc_args = new Object[2];
lc_args[0] = lc_arg0;
lc_args[1] = lc_arg1;
String lc_title = LayoutUtils.getLabel(pageContext, getBundle(), lc_key, lc_args, false);
// Compute the sort url.
String lc_sortUrl = computeSortUrl(in_header.getSortProperty());
in_header.setSortUrl(lc_sortUrl);
// Print the title.
if (panel instanceof IFilterableHeaderRenderer)
{
StringBuffer titleBuffer = new StringBuffer();
((IFilterableHeaderRenderer) panel).renderInnerFilterableHeader(titleBuffer, in_header);
lc_title = titleBuffer.toString();
}
panel.doPrintHeader(buffer, lc_title, in_header.getWidth(), lc_sortUrl);
}
protected String computeSortUrl(String sortProperty) throws JspException
{
String lc_sortUrl = null;
if (sortProperty != null)
{
StringBuffer lc_tempBuffer = new StringBuffer();
switch (sortType)
{
case SORT_LAYOUT:
String url = SortUtil.getURLForCollection(pageContext, sortProperty);
lc_tempBuffer.append(url);
break;
case SORT_CUSTOM:
// use user custom sort action.
if (!sortAction.toLowerCase().startsWith("javascript:"))
{
// No js code : go to the server to sort.
Map params = new HashMap();
params.put(sortParam, sortProperty);
String currentProperty = (String) LayoutUtils.getBeanFromPageContext(pageContext, sortParam);
int nextOrder = SortUtil.computeNextSortOrder(computeSortOrder(), currentProperty, sortProperty);
params.put(sortOrder, String.valueOf(nextOrder));
String computedUrl = LayoutUtils.computeURL(pageContext, null, null, null, sortAction, null, params, null, false, null);
lc_tempBuffer.append(computedUrl);
}
else
{
// Js code : need to put the right parameters at their
// place.
String javascriptSortParamName = "sortParam";
if (sortParam != null && sortParam.trim().length() > 0)
{
javascriptSortParamName = sortParam;
}
pageContext.setAttribute(javascriptSortParamName, sortProperty);
lc_tempBuffer.append(Expression.evaluate(sortAction, pageContext));
pageContext.removeAttribute(javascriptSortParamName);
}
break;
case SORT_JAVASCRIPT:
// sorting on the client browser with javascript.
lc_tempBuffer.append("javascript:arraySort(");
lc_tempBuffer.append(sortParam);
lc_tempBuffer.append(",");
/*
* Patch to get the correct column index when using Multi-level headers
* @author OButterlin
*/
// lc_tempBuffer.append(column);
lc_tempBuffer.append(getColumnIndexForProperty(sortProperty));
lc_tempBuffer.append(",");
lc_tempBuffer.append(size);
lc_tempBuffer.append(",");
lc_tempBuffer.append(nbOfColumns);
lc_tempBuffer.append(")");
break;
}
lc_sortUrl = lc_tempBuffer.toString();
}
return lc_sortUrl;
}
/**
* Retrieve column index for property name
* @author OButterlin
*/
private int getColumnIndexForProperty(String name)
{
int idx = 0;
Iterator it = headers.iterator();
while (it.hasNext())
{
BaseCollectionTag.Header header = (BaseCollectionTag.Header)it.next();
if (header.getProperty() != null && header.getProperty().equals(name)) return idx;
idx++;
}
return idx;
}
public String computePageURL(Map params)
{
switch (sortType)
{
case SORT_LAYOUT:
case SORT_NO:
case SORT_JAVASCRIPT:
return SortUtil.getURLForPager(pageContext, params);
case SORT_CUSTOM:
String currentSortProperty = SortUtil.getCurrentSortProperty((HttpServletRequest) pageContext.getRequest());
short currentSortOrder = SortUtil.getCurrentSortOrder((HttpServletRequest) pageContext.getRequest());
params.put(sortParam, currentSortProperty);
params.put(sortOrder, new Short(currentSortOrder));
String url = LayoutUtils.computeURL(pageContext, null, null, null, sortAction, null, params, null, false, null);
return url;
default:
throw new IllegalStateException("Unknown sort type " + sortType);
}
}
private MultiLevelHeader currentHeader;
/**
* Print a column title to the buffer. (multi level header)
*/
protected void renderMultiLevelHeaders(StringBuffer in_buffer, List in_multiLevelHeaders, int in_level) throws JspException
{
if (in_multiLevelHeaders != null)
{
columnInLine = in_multiLevelHeaders.size();
List lc_nestedLevels = null;
Iterator lc_it = in_multiLevelHeaders.iterator();
IMultiLevelHeaderRenderer lc_panel = (IMultiLevelHeaderRenderer) panel;
column = 0;
// Did we start a header row ?
boolean lc_started = false;
while (lc_it.hasNext())
{
MultiLevelHeader lc_header = (MultiLevelHeader) lc_it.next();
List lc_headerChildren = lc_header.getChildHeaders();
int lc_rowSpan = lc_headerChildren != null ? 1 : in_level + 1 - lc_header.getLevel();
Object[] lc_args = new Object[2];
lc_args[0] = Expression.evaluate(lc_header.getArg0(), pageContext);
lc_args[1] = Expression.evaluate(lc_header.getArg1(), pageContext);
String lc_title = LayoutUtils.getLabel(pageContext, getBundle(), lc_header.getTitle(), lc_args, false);
String lc_sortUrl = computeSortUrl(lc_header.getSortProperty());
lc_header.setSortUrl(lc_sortUrl);
String lc_styleClass = lc_header.getStyleClass() == null ? getStyleClass() : lc_header.getStyleClass();
String lc_tooltip = LayoutUtils.getLabel(pageContext, getBundle(), lc_header.getTooltip(), null, false);
currentHeader = lc_header;
if (lc_title != null)
{
// Title is not null, render it.
if (!lc_started)
{
// First time we render a title, start a title row.
lc_panel.startMultiLevelHeaderRow(in_buffer);
// render the header selection cell
if (lc_panel instanceof ISelectionCellRenderer)
{
if (lc_header.isMaxLevel())
{ // TODO A revoir ? (Gil)
if (((selectName != null) || (selectProperty != null)) && !selectHidden)
{
// column++;
// columnInLine++;
Map defaultAttributes = getDefaultAttributesForSelectionCell();
((ISelectionCellRenderer) lc_panel).renderSelectionCell(in_buffer, defaultAttributes, -in_level);
}
}
}
lc_started = true;
}
// Render the title.
if (panel instanceof IFilterableHeaderRenderer)
{
StringBuffer titleBuffer = new StringBuffer();
((IFilterableHeaderRenderer) panel).renderInnerFilterableHeader(titleBuffer, lc_header);
lc_title = titleBuffer.toString();
}
lc_panel.renderMultiLevelHeader(in_buffer, lc_title, lc_sortUrl, lc_styleClass, lc_header.getColSpan(), lc_rowSpan, lc_header.getWidth());
}
currentHeader = null;
if (lc_headerChildren != null)
{
if (lc_nestedLevels == null)
{
lc_nestedLevels = new ArrayList();
}
lc_nestedLevels.addAll(lc_headerChildren);
}
column++;
}
if (lc_started)
{
lc_panel.endMultiLevelHeaderRow(in_buffer);
}
renderMultiLevelHeaders(in_buffer, lc_nestedLevels, in_level - 1);
}
}
public MultiLevelHeader getCurrentHeader()
{
return currentHeader;
}
protected void renderItem(StringBuffer buffer, String in_item) throws JspException
{
String lc_item = in_item;
// if the line of the table are selectable and this is the first column,
// add a checkbox or a radio button.
if (needSelect && !selectHidden)
{
StringBuffer lc_tempBuffer = new StringBuffer();
if (sortType == SORT_JAVASCRIPT && lc_item.startsWith("<!--"))
{
// if we are sorting the collection on the client, make sure the
// resulting item still begin with the comment
// which may be used to sort the items.
int lc_index = lc_item.indexOf("-->");
lc_tempBuffer.append(lc_item.substring(0, lc_index + 3));
lc_item = lc_item.substring(lc_index + 3);
}
if (panel instanceof ISelectionCellRenderer)
{
Map defaultAttributes = getDefaultAttributesForSelectionCell();
((ISelectionCellRenderer) panel).renderSelectionCell(buffer, defaultAttributes, index);
}
else
{
renderSelection(lc_tempBuffer);
}
needSelect = false;
lc_tempBuffer.append(lc_item);
lc_item = lc_tempBuffer.toString();
}
String[] lc_styleClasses = new String[1 + tempStyles.size()];
lc_styleClasses[0] = tempStyleClass != null ? tempStyleClass : styleClass;
for (int i = 0; i < tempStyles.size(); i++)
{
lc_styleClasses[i + 1] = (String) tempStyles.get(i);
}
panel.doPrintItem(buffer, lc_item, lc_styleClasses, sortType == SORT_JAVASCRIPT ? "t" + sortParam + "l" + index + "c" + column : null);
}
private Map getDefaultAttributesForSelectionCell() throws JspException
{
Map result = new HashMap();
// "type" attribute
if ("checkbox".equalsIgnoreCase(selectType))
{
result.put("type", "checkbox");
}
else
{
result.put("type", "radio");
}
// "name" attribute
StringBuffer buffer = new StringBuffer();
if (selectName != null)
{
buffer.append(selectName);
}
else
{
buffer.append(selectProperty);
}
if ("checkbox".equalsIgnoreCase(selectType))
{
if (selectId != null)
{
buffer.append("(");
buffer.append(LayoutUtils.getProperty(bean, selectId));
buffer.append(")");
}
else
{
buffer.append("[");
buffer.append(index - 1);
buffer.append("]");
if (selectIndex != null)
{
buffer.append(".");
buffer.append(selectIndex);
}
}
}
result.put("name", buffer.toString());
// "onClick" attribute
if (onClick != null)
{
result.put("onclick", onClick);
}
// "value" attribute"
// buffer.setLength(0);
// buffer.append("\" value=\"");
Object lc_value = bean == null ? "" : LayoutUtils.getProperty(bean, selectProperty);
// buffer.append(lc_value);
// buffer.append("\"");
result.put("value", lc_value);
// "checked" attribute.
if (bean != null && isCurrentBeanSelected())
{
result.put("checked", "checked");
}
return result;
}
protected void renderSelection(StringBuffer lc_tempBuffer) throws JspException
{
lc_tempBuffer.append("<input ");
Map defaultAttributes = getDefaultAttributesForSelectionCell();
lc_tempBuffer.append(HTMLUtils.convertAttributesToHtml(defaultAttributes));
lc_tempBuffer.append(">");
}
protected void renderStart(StringBuffer out_buffer) throws JspException
{
// Display the title
Object[] lc_args = new Object[5];
Object lc_arg0 = null;
if (arg0Name != null)
{
lc_arg0 = LayoutUtils.getBeanFromPageContext(pageContext, arg0Name, null);
}
lc_args[0] = lc_arg0;
panel.doPrintTitle(out_buffer, LayoutUtils.getLabel(pageContext, getBundle(), title, lc_args, false));
panel.doStartPanel(out_buffer, align, width);
}
/**
* Returns true if the bean at the current index is selected. Results only
* valid when called once iteration is under way.
*
* @return boolean
* @throws JspException
* @author LeeFreyberg
*/
public boolean isCurrentBeanSelected() throws JspException
{
if (selectName != null)
{
Object lc_selectedValue = null;
if ("checkbox".equalsIgnoreCase(selectType))
{
if (selectId == null)
{
lc_selectedValue = LayoutUtils.getBeanFromPageContext(pageContext, Constants.BEAN_KEY, selectName + "[" + (index - 1) + "]");
}
else
{
lc_selectedValue = LayoutUtils.getBeanFromPageContext(pageContext, Constants.BEAN_KEY, selectName + "(" + LayoutUtils.getProperty(bean, selectId) + ")");
}
}
else
{
lc_selectedValue = LayoutUtils.getBeanFromPageContext(pageContext, Constants.BEAN_KEY, selectName);
}
if (lc_selectedValue != null && lc_selectedValue.equals(LayoutUtils.getProperty(bean, selectProperty)))
{
return true;
}
}
return false;
}
public Object processStaticCodeIncludeEvent(StaticCodeIncludeLayoutEvent in_event) throws JspException
{
String lc_codeToPrint = (String) in_event.sendToParent(this);
staticCode += lc_codeToPrint;
return "";
}
protected void renderStaticCode(StringBuffer out_buffer)
{
if (staticCode.length() > 0)
{
out_buffer.append(staticCode);
staticCode = "";
}
}
} |
[Struts-layout 1.3] Tri Date n'importe comment sur layout:collection
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Envoyé par jadey
c'était moi qui m'adressait à toi OButterlin
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