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/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http:// www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.jsf.ui.elementedit.util;
import java.util.List;
import org.eclipse.jst.jsf.core.internal.tld.IJSFConstants;
import org.eclipse.jst.pagedesigner.jsf.core.dom.JSFDOMUtil;
import org.w3c.dom.Element;
import org.eclipse.jst.pagedesigner.utils.DOMUtil;
/**
* @author mengbo
* @version 1.5
*/
public class PanelGridUtil
{
private static final int INVALID_POSITION = -10;
private Element _panelGrid = null;
/**
* @param panelGrid
*/
public PanelGridUtil(Element panelGrid)
{
this._panelGrid = panelGrid;
}
/**
* @param domIndex
* @return the row index in the panel of the relative dom index
*/
public int convertRowIndexFromDomToView(int domIndex)
{
boolean hasHeaderRow = (JSFDOMUtil.findFacet(this._panelGrid, "header") != null); //$NON-NLS-1$
boolean hasFooterRow = (JSFDOMUtil.findFacet(this._panelGrid, "footer") != null); //$NON-NLS-1$
if (!hasFooterRow)
{
return domIndex;
}
if (domIndex == 0)
{
return domIndex;
}
if (hasHeaderRow)
{
if (domIndex > 1)
{
return domIndex - 1;
}
}
else
{
if (domIndex > 0)
{
return domIndex - 1;
}
}
//must be footer
int uiRows = getUIRowCount();
return domIndex + uiRows;
}
/**
* @param cell
* @return the dom row index of cell in the panel
*/
public int getDomRowIndex(Element cell)
{
boolean hasHeaderRow = (JSFDOMUtil.findFacet(this._panelGrid, "header") != null); //$NON-NLS-1$
boolean hasFooterRow = (JSFDOMUtil.findFacet(this._panelGrid, "footer") != null); //$NON-NLS-1$
//if cell is header or footer
boolean isFacet = JSFDOMUtil.isFacet(cell);
Element parent = (Element) cell.getParentNode();
boolean isParentFacet = JSFDOMUtil.isFacet(parent);
if (isParentFacet)
{
cell = parent;
}
if (isFacet || isParentFacet)
{
String attrName = cell.getAttribute("name"); //$NON-NLS-1$
if ("header".equalsIgnoreCase(attrName)) //$NON-NLS-1$
{
return 0;
}
else if ("footer".equalsIgnoreCase(attrName)) //$NON-NLS-1$
{
if (hasHeaderRow)
{
return 1;
}
return 0;
}
}
int columns = DOMUtil.getIntAttributeIgnoreCase(this._panelGrid, IJSFConstants.ATTR_COLUMNS, 1);
if (columns < 1)
{
columns = 1;
}
int pos = getPosition(cell);
int rowIndex = pos / columns;
if (hasHeaderRow)
{
rowIndex++;
}
if (hasFooterRow)
{
rowIndex++;
}
return rowIndex;
}
/**
* @param cell
* @return the column index of cell in the panel
*/
public int getDomColumnIndex(Element cell)
{
int columns = DOMUtil.getIntAttributeIgnoreCase(this._panelGrid, IJSFConstants.ATTR_COLUMNS, 1);
if (columns < 1)
{
columns = 1;
}
int pos = getPosition(cell);
//if position is at header or footer,then insert column action should be disabled
if (pos == INVALID_POSITION)
{
return pos;
}
int columnIndex = pos % columns;
return columnIndex;
}
/**
* @return the row count in the panel
*/
public int getUIRowCount()
{
int columns = DOMUtil.getIntAttributeIgnoreCase(this._panelGrid, IJSFConstants.ATTR_COLUMNS, 1);
if (columns < 1)
{
columns = 1;
}
List children = JSFDOMUtil.getUIComponentChildren(this._panelGrid);
int numRows = (children.size() + columns - 1) / columns;
return numRows;
}
private int getPosition(Element cell)
{
List children = JSFDOMUtil.getUIComponentChildren(this._panelGrid);
int size = children.size();
int i = 0;
for (i = 0; i < size; i++)
{
if (cell == children.get(i))
{
break;
}
}
if (i == size)
{
return INVALID_POSITION;
}
return i;
}
}
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