| /******************************************************************************* |
| * Copyright (c) 2004, 2005 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.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() |
| */ |
| public String getLabel() { |
| return fConfigurationElement.getAttribute(ATTR_MEM_RENDERING_TYPE_NAME); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.ui.memory.IMemoryRenderingType#getId() |
| */ |
| public String getId() { |
| return fConfigurationElement.getAttribute(ATTR_MEM_RENDERING_TYPE_ID); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.ui.memory.IMemoryRenderingType#createRendering() |
| */ |
| 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); |
| } |
| } |
| } |