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/*******************************************************************************
* Copyright (c) 2006, 2008 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.pde.internal.ui.editor.contentassist;
import java.io.PrintWriter;
import java.net.URL;
import org.eclipse.pde.core.plugin.IPluginExtensionPoint;
import org.eclipse.pde.internal.core.ischema.ISchema;
import org.eclipse.pde.internal.core.ischema.ISchemaObject;
import org.eclipse.pde.internal.core.schema.SchemaAnnotationHandler;
import org.eclipse.pde.internal.core.schema.SchemaRegistry;
import org.eclipse.pde.internal.core.util.SchemaUtil;
import org.eclipse.pde.internal.core.util.XMLComponentRegistry;
public class VirtualSchemaObject implements ISchemaObject {
private String fName;
private Object fDescription;
private int fType;
public VirtualSchemaObject(String name, Object description, int type) {
fName = name;
fDescription = description;
fType = type;
}
public String getDescription() {
if (fDescription instanceof String) {
return (String) fDescription;
} else if (fDescription instanceof IPluginExtensionPoint) {
// Making the description an Object was necessary to defer
// the retrieval of the schema description String to
// only when it is need - instead of ahead of time.
// Retrieval of the String involves reparsing the schema from
// file which is has a huge performance cost during content
// assist sessions.
return getSchemaDescription((IPluginExtensionPoint) fDescription);
}
return null;
}
public String getName() {
return fName;
}
public ISchemaObject getParent() {
return null;
}
public ISchema getSchema() {
return null;
}
public void setParent(ISchemaObject parent) {
}
@SuppressWarnings("rawtypes")
public Object getAdapter(Class adapter) {
return null;
}
public void write(String indent, PrintWriter writer) {
}
public int getVType() {
return fType;
}
public void setVType(int type) {
fType = type;
}
private String getSchemaDescription(IPluginExtensionPoint point) {
String description = null;
if (point != null) {
description = XMLComponentRegistry.Instance().getDescription(point.getFullId(), XMLComponentRegistry.F_SCHEMA_COMPONENT);
if (description == null) {
URL url = SchemaRegistry.getSchemaURL(point);
if (url != null) {
SchemaAnnotationHandler handler = new SchemaAnnotationHandler();
SchemaUtil.parseURL(url, handler);
description = handler.getDescription();
XMLComponentRegistry.Instance().putDescription(point.getFullId(), description, XMLComponentRegistry.F_SCHEMA_COMPONENT);
}
}
}
return description;
}
}
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