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/*******************************************************************************
* Copyright (c) 2004, 2005 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.memory;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.debug.ui.memory.IMemoryRendering;
import org.eclipse.debug.ui.memory.IMemoryRenderingType;
import org.eclipse.debug.ui.memory.IMemoryRenderingTypeDelegate;
/**
* A contributed memory rendering type.
*
* @since 3.1
*/
class MemoryRenderingType implements IMemoryRenderingType {
private IConfigurationElement fConfigurationElement;
private IMemoryRenderingTypeDelegate fDelegate;
// attributes for a memoryRenderingType
static final String ATTR_MEM_RENDERING_TYPE_NAME = "name"; //$NON-NLS-1$
static final String ATTR_MEM_RENDERING_TYPE_ID = "id"; //$NON-NLS-1$
static final String ATTR_MEM_RENDERING_TYPE_DELEGATE = "class"; //$NON-NLS-1$
/**
* Constructs a rendering type from a contribution.
*/
MemoryRenderingType(IConfigurationElement element) {
fConfigurationElement = element;
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.memory.IMemoryRenderingType#getLabel()
*/
@Override
public String getLabel() {
return fConfigurationElement.getAttribute(ATTR_MEM_RENDERING_TYPE_NAME);
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.memory.IMemoryRenderingType#getId()
*/
@Override
public String getId() {
return fConfigurationElement.getAttribute(ATTR_MEM_RENDERING_TYPE_ID);
}
/* (non-Javadoc)
* @see org.eclipse.debug.ui.memory.IMemoryRenderingType#createRendering()
*/
@Override
public IMemoryRendering createRendering() throws CoreException {
if (fDelegate == null) {
fDelegate = (IMemoryRenderingTypeDelegate) fConfigurationElement.createExecutableExtension(ATTR_MEM_RENDERING_TYPE_DELEGATE);
}
return fDelegate.createRendering(getId());
}
/**
* Validates this contribution.
*
* @exception CoreException if invalid
*/
void validate() throws CoreException {
verifyPresent(ATTR_MEM_RENDERING_TYPE_ID);
verifyPresent(ATTR_MEM_RENDERING_TYPE_NAME);
verifyPresent(ATTR_MEM_RENDERING_TYPE_DELEGATE);
}
private void verifyPresent(String attrName) throws CoreException {
if (fConfigurationElement.getAttribute(attrName) == null) {
Status status = new Status(IStatus.ERROR, DebugUIPlugin.getUniqueIdentifier(), IDebugUIConstants.INTERNAL_ERROR,
"<memoryRenderingType> element missing required attribute: " + attrName, null); //$NON-NLS-1$
throw new CoreException(status);
}
}
}
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