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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.ui.internal.views;
import java.util.Dictionary;
import java.util.Hashtable;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.help.search.ISearchEngine;
import org.eclipse.help.search.ISearchScope;
import org.eclipse.help.ui.IEngineDescriptor;
import org.eclipse.help.ui.RootScopePage;
import org.eclipse.help.ui.internal.IHelpUIConstants;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
/**
* Descriptor for a federated search engine participant.
*/
public class EngineDescriptor implements IEngineDescriptor {
public static final String P_MASTER = "__enabled__"; //$NON-NLS-1$
private ISearchEngine engine;
private IConfigurationElement config;
private EngineDescriptorManager manager;
private EngineTypeDescriptor etdesc;
private Hashtable<String, Object> parameters;
//private boolean removable;
//private boolean enabled;
private String id;
private String label;
private String desc;
private boolean userDefined;
/**
*
*/
public EngineDescriptor(IConfigurationElement config) {
this.config = config;
}
public EngineDescriptor(EngineDescriptorManager manager) {
this.manager = manager;
}
public void setEngineType(EngineTypeDescriptor etdesc) {
this.etdesc = etdesc;
}
public void setEngineDescriptorManager(EngineDescriptorManager manager) {
this.manager = manager;
}
public IConfigurationElement getConfig() {
return config;
}
@Override
public String getLabel() {
if (label != null)
return label;
String clabel = null;
if (config != null)
clabel = config.getAttribute(IHelpUIConstants.ATT_LABEL);
if (clabel == null)
clabel = etdesc.getLabel();
return clabel;
}
@Override
public String getId() {
if (id != null)
return id;
return config.getAttribute(IHelpUIConstants.ATT_ID);
}
@Override
public String getEngineTypeId() {
if (etdesc != null)
return etdesc.getId();
return config.getAttribute(IHelpUIConstants.ATT_ENGINE_TYPE_ID);
}
public boolean isEnabled() {
if (userDefined)
return true;
String aenabled = config.getAttribute(IHelpUIConstants.ATT_ENABLED);
if (aenabled != null)
return aenabled.equals("true"); //$NON-NLS-1$
return false;
}
public Image getIconImage() {
return etdesc.getIconImage();
}
@Override
public String getDescription() {
if (desc != null)
return desc;
String cdesc = null;
if (config != null) {
IConfigurationElement[] children = config
.getChildren(IHelpUIConstants.TAG_DESC);
if (children.length == 1)
cdesc = children[0].getValue();
}
if (cdesc == null)
return etdesc.getDescription();
return cdesc;
}
public IConfigurationElement[] getPages() {
return etdesc.getPages();
}
public ImageDescriptor getImageDescriptor() {
return etdesc.getImageDescriptor();
}
public RootScopePage createRootPage(String scopeSetName) {
RootScopePage page = etdesc.createRootPage(scopeSetName);
if (page != null) {
//Dictionary parameters = getParameters();
page.init(this, scopeSetName);
}
return page;
}
@Override
public Dictionary<String, Object> getParameters() {
if (parameters != null)
return parameters;
parameters = new Hashtable<>();
parameters.put(P_MASTER, isEnabled() ? Boolean.TRUE : Boolean.FALSE);
if (config != null) {
IConfigurationElement[] params = config.getChildren("param"); //$NON-NLS-1$
for (int i = 0; i < params.length; i++) {
IConfigurationElement param = params[i];
String name = param.getAttribute(IHelpUIConstants.ATT_NAME);
String value = param.getAttribute(IHelpUIConstants.ATT_VALUE);
if (name != null && value != null)
parameters.put(name, value);
}
}
return parameters;
}
public ISearchEngine getEngine() {
if (engine == null) {
engine = etdesc.createEngine();
}
return engine;
}
public ISearchScope createSearchScope(IPreferenceStore store) {
return etdesc.createSearchScope(store, getId(), getParameters());
}
void setId(String id) {
this.id = id;
}
@Override
public void setLabel(String label) {
if (isUserDefined()) {
this.label = label;
if (manager!=null)
manager.notifyPropertyChange(this);
}
}
@Override
public void setDescription(String desc) {
if (isUserDefined()) {
this.desc = desc;
if (manager!=null)
manager.notifyPropertyChange(this);
}
}
@Override
public boolean isUserDefined() {
return userDefined;
}
public void setUserDefined(boolean userDefined) {
this.userDefined = userDefined;
}
}
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