/*******************************************************************************
* 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.actions.link;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.window.Window;
import org.eclipse.jst.jsf.common.ui.internal.dialogs.CommonWizardDialog;
import org.eclipse.jst.pagedesigner.PDPlugin;
import org.eclipse.jst.pagedesigner.parts.TextEditPart;
import org.eclipse.jst.pagedesigner.viewer.DesignPosition;
import org.eclipse.jst.pagedesigner.viewer.DesignRange;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @author mengbo
* @version 1.5
*/
public class MakeLinkAction extends Action {
private final static String MAKE_LINK = PDPlugin
.getResourceString("ActionGroup.Submenu.Link"); //$NON-NLS-1$
private final static String WIZARD_PAGE_TITLE = PDPlugin
.getResourceString("MakeLinkAction.Wizard.PageTitle"); //$NON-NLS-1$
private EditPart _editPart;
private DesignRange _range;
private String _linkType;
/**
* @param range
*/
public MakeLinkAction(DesignRange range) {
super(MAKE_LINK);
_range = range;
_editPart = convertToEditPart(_range);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.action.Action#run()
*/
public void run() {
Map<String, ILinkCreator> map = calAvailableLinkCreator();
if (map.size() > 1) {
CreateLinkWizard wizard = new CreateLinkWizard(_editPart, _range,
map);
wizard.setPageTitle(WIZARD_PAGE_TITLE);
CommonWizardDialog wizardDialog = new CommonWizardDialog(
getShell(), wizard);
wizardDialog.create();
if (wizardDialog.open() == Window.OK) {
_linkType = wizard.getChosenLinkType();
}
}
// else must be html link
else if (map.size() == 1) {
Set<Map.Entry<String, ILinkCreator>> set = map.entrySet();
Iterator<Map.Entry<String,ILinkCreator>> itr = set.iterator();
while (itr.hasNext()) {
ILinkCreator creator = itr.next().getValue();
_linkType = creator.getLinkIdentifier();
}
}
if (_linkType != null) {
Request request = new LinkRequest(_linkType, _range);
Command cmd = _editPart.getCommand(request);
if (cmd != null && cmd.canExecute()) {
cmd.execute();
}
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.action.IAction#isEnabled()
*/
public boolean isEnabled() {
if (_editPart == null) {
return false;
}
return super.isEnabled();
}
private EditPart convertToEditPart(DesignRange range) {
DesignPosition startPosition = range.getStartPosition();
EditPart startPart = startPosition.getContainerPart();
DesignPosition endPosition = range.getEndPosition();
EditPart endPart = endPosition.getContainerPart();
if (startPosition == endPosition) {
return null;
}
if (startPart instanceof TextEditPart
&& endPart instanceof TextEditPart) {
if ((startPart == endPart)) {
return startPart;
}
} else if (!(startPart instanceof TextEditPart)
&& !(endPart instanceof TextEditPart)) {
Node[] startNodeOptions = null;
startNodeOptions = getSideNodes(startPosition);
Node[] endNodeOptions = null;
endNodeOptions = getSideNodes(endPosition);
Node selectedNode = null;
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 2; j++) {
if (startNodeOptions[i] == endNodeOptions[j]) {
selectedNode = startNodeOptions[i];
break;
}
}
if (selectedNode != null) {
break;
}
}
if (selectedNode != null) {
EditPart part = (EditPart) ((INodeNotifier) selectedNode)
.getAdapterFor(EditPart.class);
return part;
}
} else {
if (startPart instanceof TextEditPart) {
Node[] endNodeOptions = null;
endNodeOptions = getSideNodes(endPosition);
if (startPart.getModel() == endNodeOptions[0]
|| startPart.getModel() == endNodeOptions[1]) {
return startPart;
}
}
if (endPart instanceof TextEditPart) {
Node[] startNodeOptions = null;
startNodeOptions = getSideNodes(startPosition);
if (endPart.getModel() == startNodeOptions[0]
|| endPart.getModel() == startNodeOptions[1]) {
return endPart;
}
}
}
return null;
}
private Node[] getSideNodes(DesignPosition pos) {
Node[] nodes = new Node[2];
EditPart part = pos.getContainerPart();
Node node = (Node) part.getModel();
NodeList list = node.getChildNodes();
if (list.getLength() == pos.getOffset()) {
nodes[0] = list.item(pos.getOffset() - 1);
nodes[1] = list.item(pos.getOffset() - 1);
} else if (pos.getOffset() == 0) {
nodes[0] = list.item(0);
nodes[1] = list.item(0);
} else if (pos.getOffset() > 0 && pos.getOffset() < list.getLength()) {
nodes[0] = list.item(pos.getOffset() - 1);
nodes[1] = list.item(pos.getOffset());
}
return nodes;
}
private Shell getShell() {
if (_editPart != null) {
IHTMLGraphicalViewer viewer = (IHTMLGraphicalViewer) _editPart
.getViewer();
return viewer.getControl().getShell();
}
return null;
}
private Map<String, ILinkCreator> calAvailableLinkCreator() {
Map<String, ILinkCreator> map = new HashMap<String, ILinkCreator>();
List<ILinkCreator> linkCreators = ExtensionReader.getAllLinkHandlers();
for (ILinkCreator linkCreator : linkCreators) {
String identifier = linkCreator.getLinkIdentifier();
boolean canExecute = linkCreator.canExecute(_range);
if (canExecute) {
map.put(identifier, linkCreator);
}
}
return map;
}
}