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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.commands.jsfhtml;
import java.util.List;
import org.eclipse.jface.viewers.ISelection;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.eclipse.jst.jsf.core.internal.tld.IJSFConstants;
import org.eclipse.jst.jsf.core.internal.tld.ITLDConstants;
import org.eclipse.jst.pagedesigner.commands.DesignerCommand;
import org.eclipse.jst.pagedesigner.jsf.core.dom.JSFDOMUtil;
import org.eclipse.jst.pagedesigner.utils.DOMUtil;
import org.eclipse.jst.pagedesigner.utils.JSPUtil;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
/**
* @author mengbo
* @version 1.5
*/
public class PanelGridInsertRowCommand extends DesignerCommand
{
private int _rowIndex;
private Element _panelGridEle;
/**
* consturctor
* @param viewer
* @param panelGrid
* @param rowIndex
*/
public PanelGridInsertRowCommand(IHTMLGraphicalViewer viewer, Element panelGrid, int rowIndex)
{
super(CommandResources.getString("PanelGridInsertRowCommand.Label.InsertRow"), viewer); //$NON-NLS-1$
this._panelGridEle = panelGrid;
this._rowIndex = rowIndex;
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#canExecute()
*/
public boolean canExecute()
{
if (this._rowIndex < 0)
{
return false;
}
boolean hasHeaderRow = (JSFDOMUtil.findFacet(_panelGridEle, "header") != null); //$NON-NLS-1$
//forbid insert row before header
if (hasHeaderRow && _rowIndex == 0)
{
return false;
}
int offIndex = this._rowIndex;
if (hasHeaderRow)
{
offIndex--;
}
int columns = DOMUtil.getIntAttributeIgnoreCase(_panelGridEle, IJSFConstants.ATTR_COLUMNS, 1);
if (columns < 1)
{
columns = 1;
}
List children = JSFDOMUtil.getUIComponentChildren(_panelGridEle);
int numRows = (children.size() + columns - 1) / columns;
// //if the last element row is not full,then forbid insert row after the row
// if ((children.size() % columns != 0) && (offIndex == numRows))
// {
// return false;
// }
//forbid insert row after the footer row
if (offIndex > numRows)
{
return false;
}
return super.canExecute();
}
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#doExecute()
*/
protected void doExecute()
{
boolean hasHeaderRow = (JSFDOMUtil.findFacet(_panelGridEle, "header") != null); //$NON-NLS-1$
int columns = DOMUtil.getIntAttributeIgnoreCase(_panelGridEle, IJSFConstants.ATTR_COLUMNS, 1);
if (columns < 1)
{
columns = 1;
}
List children = JSFDOMUtil.getUIComponentChildren(_panelGridEle);
int numRows = (children.size() + columns - 1) / columns;
int insertRow = _rowIndex;
if (hasHeaderRow)
{
if (insertRow == 0)
{
return;
}
insertRow--;
}
//if (insertRow < numRows || ((insertRow == numRows) && (children.size() % columns == 0)))
{
int insertPoint = insertRow * columns;
Node node = null;
if (insertPoint < children.size())
{
node = (Node) children.get(insertPoint);
}
int adds = 0;
//if insert after the last ui row
if (insertRow >= numRows)
{
adds = columns * (numRows + 1) - children.size();
}
else
{
adds = columns;
}
for (int i = 0; i < adds; i++)
{
Node child = createDefaultNode();
_panelGridEle.insertBefore(child, node);
}
formatNode(_panelGridEle);
}
}
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#getAfterCommandDesignerSelection()
*/
protected ISelection getAfterCommandDesignerSelection()
{
return toDesignSelection(this._panelGridEle);
}
private Node createDefaultNode()
{
String prefix = JSPUtil.getOrCreatePrefix(getModel(), ITLDConstants.URI_JSF_HTML, "h"); //$NON-NLS-1$
Element child = _panelGridEle.getOwnerDocument().createElement(IJSFConstants.TAG_OUTPUTTEXT);
child.setPrefix(prefix);
return child;
}
}
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