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/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* 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:
* Gerry Kessler/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.taglibprocessing.attributevalues;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IWorkspaceContextResolver;
import org.eclipse.jst.jsf.core.jsfappconfig.JSFAppConfigManager;
import org.eclipse.jst.jsf.facesconfig.FacesConfigPlugin;
import org.eclipse.jst.jsf.facesconfig.emf.DisplayNameType;
import org.eclipse.jst.jsf.facesconfig.emf.NavigationCaseType;
import org.eclipse.jst.jsf.facesconfig.emf.NavigationRuleType;
import org.eclipse.jst.jsf.metadataprocessors.features.IPossibleValues;
import org.eclipse.jst.jsf.metadataprocessors.features.IValidationMessage;
import org.eclipse.jst.jsf.metadataprocessors.features.PossibleValue;
import org.eclipse.jst.jsf.metadataprocessors.features.ValidationMessage;
import org.eclipse.osgi.util.NLS;
import org.osgi.framework.Bundle;
/**
* Meta-data processing type representing an "action" attribute
*
* <p><b>Provisional API - subject to change</b></p>
* @author Gerry Kessler - Oracle
*/
public class ActionType extends MethodBindingType implements IPossibleValues{
/**
* Image to use if metadata defined image cannot be created
*/
protected static final ImageDescriptor MISSING_IMAGE = ImageDescriptor.getMissingImageDescriptor();
private static final String IMAGE_NAME = "/icons/full/obj16/NavigationCaseType.gif"; //$NON-NLS-1$
private ImageDescriptor imageDescriptor;
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.taglibprocessing.attributevalues.MethodBindingType#isValidValue(java.lang.String)
*/
public boolean isValidValue(String value){
if (value != null && value.length() > 0)
return true;
// what other coercion rules apply???
IValidationMessage msg = new ValidationMessage(Messages.ActionType_invalid_value);
getValidationMessages().add(msg);
return false;
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.metadataprocessors.features.IPossibleValues#getPossibleValues()
*/
public List getPossibleValues() {
// TODO getNavigationRules for this page from JSFAppMgr
List ret = new ArrayList();
IWorkspaceContextResolver wr = IStructuredDocumentContextResolverFactory.INSTANCE.getWorkspaceContextResolver(getStructuredDocumentContext());
if (wr != null){
IFile jsp = (IFile)wr.getResource();
List rules = JSFAppConfigManager.getInstance(wr.getProject()).getNavigationRulesForPage(jsp);
for(Iterator it=rules.iterator();it.hasNext();){
NavigationRuleType rule = (NavigationRuleType)it.next();
if (rule != null)
ret.addAll(createProposals(rule));
}
}
return ret;
}
private List createProposals(NavigationRuleType rule) {
List ret = new ArrayList();
List cases = rule.getNavigationCase();
for(Iterator it=cases.iterator();it.hasNext();){
NavigationCaseType navCase = (NavigationCaseType)it.next();
PossibleValue pv = createProposal(rule, navCase);
if (pv != null)
ret.add(pv);
}
return ret;
}
private PossibleValue createProposal(NavigationRuleType rule, NavigationCaseType navCase) {
PossibleValue pv = null;
String value = null;
String ruleDisp = null;
String navDisplay = null;
String navAction = null;
String toViewId = null;
if (navCase.getFromOutcome() != null)
value = navCase.getFromOutcome().getTextContent();
if (navCase.getToViewId()!= null)
toViewId = navCase.getToViewId().getTextContent();
if (rule.getFromViewId() != null)
ruleDisp = rule.getFromViewId().getTextContent();
if (navCase.getDisplayName() != null
&& navCase.getDisplayName().size() > 0) {
navDisplay = ((DisplayNameType) navCase
.getDisplayName().get(0)).getTextContent();
}
if (navCase.getFromAction() != null) {
navAction= navCase.getFromAction().getTextContent();
}
if (navDisplay == null || navDisplay.trim().equals("")) //$NON-NLS-1$
navDisplay = NLS.bind(Messages.ActionType_navcase_display, new String[]{value, toViewId});
if (value != null){
pv = new PossibleValue(value, navDisplay);
pv.setIcon(getNavCaseImageDescriptor());
pv.setAdditionalInformation("from-outcome: "+value //$NON-NLS-1$
+ "<br>to-view-id: " + toViewId //$NON-NLS-1$
+ "<br>from-view-id: " + ruleDisp //$NON-NLS-1$
+ "<br>from-action: " + (navAction == null ? "null" : navAction)); //$NON-NLS-1$ //$NON-NLS-2$
}
return pv;
}
private ImageDescriptor getNavCaseImageDescriptor() {
ImageDescriptor ret = super.getImage();
if (ret != null && ret != MISSING_IMAGE)
return ret;
if (imageDescriptor == null){
imageDescriptor = getImageDesc(IMAGE_NAME);
}
return imageDescriptor;
}
private ImageDescriptor getImageDesc(String img)
{
Bundle bundle = FacesConfigPlugin.getPlugin().getBundle();
URL url = FileLocator.find(bundle, new Path(img), null);
ImageDescriptor desc = ImageDescriptor.createFromURL(url);
if (desc == MISSING_IMAGE){
return null;
}
return desc;
}
}
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