| /******************************************************************************* |
| * Copyright (c) 2006, 2007 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.views.memory.renderings; |
| |
| import java.math.BigInteger; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.Job; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.model.IMemoryBlock; |
| import org.eclipse.debug.core.model.IMemoryBlockExtension; |
| import org.eclipse.debug.core.model.MemoryByte; |
| import org.eclipse.debug.internal.ui.DebugUIMessages; |
| import org.eclipse.debug.internal.ui.DebugUIPlugin; |
| import org.eclipse.debug.internal.ui.memory.provisional.AbstractAsyncTableRendering; |
| import org.eclipse.debug.internal.ui.views.memory.MemoryViewUtil; |
| import org.eclipse.debug.ui.memory.MemoryRenderingElement; |
| import org.eclipse.jface.viewers.ICellModifier; |
| import org.eclipse.swt.widgets.TableItem; |
| |
| /** |
| * @since 3.1 |
| * |
| */ |
| // TODO: if we want "true" flexible hierarchy, also need to allow clients |
| // to plug cell modifier in case the element is not MemorySegment |
| public class AsyncTableRenderingCellModifier implements ICellModifier { |
| |
| private AbstractAsyncTableRendering fRendering; |
| private boolean fMBSupportsValueModification = false; |
| |
| private ICellModifier fCustomModifier; |
| |
| public AsyncTableRenderingCellModifier(AbstractAsyncTableRendering rendering, ICellModifier customModifier) { |
| fRendering = rendering; |
| fCustomModifier = customModifier; |
| |
| Job job = new Job("AsyncTableRenderingCellModifier"){ //$NON-NLS-1$ |
| |
| protected IStatus run(IProgressMonitor monitor) { |
| fMBSupportsValueModification = fRendering.getMemoryBlock().supportsValueModification(); |
| return Status.OK_STATUS; |
| }}; |
| job.setSystem(true); |
| job.schedule(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, |
| * java.lang.String) |
| */ |
| public boolean canModify(Object element, String property) { |
| boolean canModify = true; |
| try { |
| if (!(element instanceof MemorySegment)) |
| return false; |
| |
| if (!isValueModificationSupported()) { |
| return false; |
| } |
| |
| MemorySegment line = (MemorySegment) element; |
| if (TableRenderingLine.P_ADDRESS.equals(property)) { |
| return false; |
| } |
| |
| // property is stored as number of addressable unit away from the |
| // line address |
| // to calculate offset to the memory line array, offset = |
| // numberofAddressableUnit * addressableSize |
| int addressableSize = getAddressableSize(); |
| |
| int offset = Integer.valueOf(property, 16).intValue() * addressableSize; |
| |
| MemoryByte[] bytes = line.getBytes(offset, fRendering.getBytesPerColumn()); |
| |
| if (fCustomModifier != null) |
| { |
| BigInteger address = line.getAddress().add(BigInteger.valueOf(offset)); |
| MemoryRenderingElement mElement = new MemoryRenderingElement(fRendering, address, bytes); |
| return fCustomModifier.canModify(mElement, null); |
| } |
| |
| for (int i = 0; i < bytes.length; i++) { |
| if (!bytes[i].isWritable()) { |
| canModify = false; |
| } |
| } |
| return canModify; |
| } catch (NumberFormatException e) { |
| canModify = false; |
| return canModify; |
| } |
| } |
| |
| /** |
| * @return |
| */ |
| private int getAddressableSize() { |
| int addressableSize = fRendering.getAddressableSize(); |
| if (addressableSize < 1) |
| addressableSize = 1; |
| return addressableSize; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, |
| * java.lang.String) |
| */ |
| public Object getValue(Object element, String property) { |
| |
| // give back the value of the column |
| |
| if (!(element instanceof MemorySegment)) |
| return null; |
| |
| MemorySegment line = (MemorySegment) element; |
| try { |
| if (TableRenderingLine.P_ADDRESS.equals(property)) |
| return line.getAddress(); |
| |
| int offsetToLineBuffer = Integer.valueOf(property, 16).intValue() * getAddressableSize(); |
| MemoryByte[] memory = line.getBytes(offsetToLineBuffer, fRendering.getBytesPerColumn()); |
| |
| int offsetFromLineAddress = Integer.valueOf(property, 16).intValue(); |
| BigInteger address = line.getAddress().add(BigInteger.valueOf(offsetFromLineAddress)); |
| |
| if (fCustomModifier != null) |
| { |
| MemoryRenderingElement mElement = new MemoryRenderingElement(fRendering, address, memory); |
| return fCustomModifier.getValue(mElement, null); |
| } |
| |
| // ask the rendering for a string representation of the bytes |
| return fRendering.getString(fRendering.getRenderingId(), address, memory); |
| |
| } catch (NumberFormatException e) { |
| return "00"; //$NON-NLS-1$ |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, |
| * java.lang.String, java.lang.Object) |
| */ |
| public void modify(Object element, final String property, final Object value) { |
| |
| MemorySegment segment = null; |
| if (element instanceof TableItem) { |
| Object data = ((TableItem)element).getData(); |
| if (data != null && data instanceof MemorySegment) |
| segment = (MemorySegment)data; |
| |
| } else if (element instanceof MemorySegment){ |
| segment = (MemorySegment) element; |
| } |
| |
| if (segment == null) |
| return; |
| |
| final MemorySegment line = segment; |
| |
| Job job = new Job("Set Values"){ //$NON-NLS-1$ |
| |
| protected IStatus run(IProgressMonitor monitor) { |
| try { |
| // calculate offset to update |
| final IMemoryBlock memoryBlk = fRendering.getMemoryBlock(); |
| |
| // number of addressable units from the line's start address |
| int offsetFromLineAddress = Integer.valueOf(property, 16).intValue(); |
| |
| // this offset is number of addressable unit from memory block's base address |
| final BigInteger offsetFromMBBase = getOffset(memoryBlk, line.getAddress(), offsetFromLineAddress); |
| |
| // property is number of addressable unit from line address |
| // to calculate proper offset in the memoryViewLine's array |
| // offset = numberOfAddressableUnit * addressableSize |
| int offsetToLineBuffer = Integer.valueOf(property, 16).intValue() * getAddressableSize(); |
| |
| MemoryByte[] oldArray = line.getBytes(offsetToLineBuffer, fRendering.getBytesPerColumn()); |
| |
| // address is line address + addressable unit into the line |
| BigInteger address = line.getAddress(); |
| address = address.add(BigInteger.valueOf(offsetFromLineAddress)); |
| |
| if (fCustomModifier != null) { |
| MemoryRenderingElement mElement = new MemoryRenderingElement(fRendering, address, oldArray); |
| fCustomModifier.modify(mElement, null, value); |
| return Status.OK_STATUS; |
| } |
| |
| if (!(value instanceof String)) |
| { |
| DebugUIPlugin.logErrorMessage("Cell modifier cannot handle non-string values."); //$NON-NLS-1$ |
| return Status.OK_STATUS; |
| } |
| |
| byte[] bytes = null; |
| String oldValue = (String) getValue(line, property); |
| if (!oldValue.equals(value)) { |
| bytes = fRendering.getBytes(fRendering.getRenderingId(), address, oldArray, (String) value); |
| |
| if (bytes == null) |
| return Status.OK_STATUS; |
| |
| if (bytes.length == 0) |
| return Status.OK_STATUS; |
| |
| if (bytes.length <= oldArray.length) { |
| boolean changed = false; |
| // check that the bytes returned has actually changed |
| for (int i = 0; i < bytes.length; i++) { |
| if (bytes[i] != oldArray[i].getValue()) { |
| changed = true; |
| break; |
| } |
| } |
| if (!changed) |
| return Status.OK_STATUS; |
| } |
| } else { |
| // return if value has not changed |
| return Status.OK_STATUS; |
| } |
| |
| final byte[] newByteValues = bytes; |
| |
| if (memoryBlk instanceof IMemoryBlockExtension) |
| ((IMemoryBlockExtension) memoryBlk).setValue(offsetFromMBBase, newByteValues); |
| else |
| memoryBlk.setValue(offsetFromMBBase.longValue(), newByteValues); |
| } catch (DebugException e) { |
| MemoryViewUtil.openError(DebugUIMessages.MemoryViewCellModifier_failure_title, DebugUIMessages.MemoryViewCellModifier_failed, e); |
| } catch (NumberFormatException e) { |
| MemoryViewUtil.openError(DebugUIMessages.MemoryViewCellModifier_failure_title, DebugUIMessages.MemoryViewCellModifier_failed + "\n" + DebugUIMessages.MemoryViewCellModifier_data_is_invalid, null); //$NON-NLS-1$ |
| } |
| return Status.OK_STATUS; |
| }}; |
| |
| job.setSystem(true); |
| job.schedule(); |
| } |
| |
| private BigInteger getOffset(IMemoryBlock memory, BigInteger lineAddress, int lineOffset) throws DebugException { |
| |
| BigInteger memoryAddr; |
| |
| if (memory instanceof IMemoryBlockExtension) { |
| memoryAddr = ((IMemoryBlockExtension) memory).getBigBaseAddress(); |
| } else { |
| memoryAddr = BigInteger.valueOf(memory.getStartAddress()); |
| } |
| |
| if (memoryAddr == null) |
| memoryAddr = new BigInteger("0"); //$NON-NLS-1$ |
| |
| return lineAddress.subtract(memoryAddr).add(BigInteger.valueOf(lineOffset)); |
| } |
| |
| private boolean isValueModificationSupported() |
| { |
| return fMBSupportsValueModification; |
| } |
| |
| } |
