| /******************************************************************************* |
| * Copyright (c) 2005, 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 |
| * Wind River Systems - adapted to use in DSF |
| * Patrick Chuong (Texas Instruments) |
| *******************************************************************************/ |
| package org.eclipse.cdt.dsf.ui.viewmodel; |
| |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDeltaVisitor; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta; |
| |
| /** |
| * This delta class mostly just duplicates the ModelDelta implementation, but |
| * it allows clients to modify the flags after the original object is |
| * constructed. |
| * |
| * @see IModelDelta#getNodes() |
| * |
| * @since 1.0 |
| */ |
| public class VMDelta extends ModelDelta { |
| |
| private VMDelta fParent; |
| private Object fElement; |
| private int fFlags; |
| private VMDelta[] fNodes = EMPTY_NODES; |
| private Object fReplacement; |
| private int fIndex; |
| private static final VMDelta[] EMPTY_NODES = new VMDelta[0]; |
| private int fChildCount = -1; |
| |
| /** |
| * Constructs a new delta for the given element. |
| * |
| * @param vmcElement model element |
| * @param flags change flags |
| */ |
| public VMDelta(Object element, int flags) { |
| super(element, flags); |
| fElement = element; |
| fFlags = flags; |
| } |
| |
| /** |
| * Constructs a new delta for the given element to be replaced |
| * with the specified replacement element. |
| * |
| * @param vmcElement model element |
| * @param replacement replacement element |
| * @param flags change flags |
| */ |
| public VMDelta(Object element, Object replacement, int flags) { |
| super(element, replacement, flags); |
| fElement = element; |
| fReplacement = replacement; |
| fFlags = flags; |
| } |
| |
| /** |
| * Constructs a new delta for the given element to be inserted at |
| * the specified index. |
| * |
| * @param vmcElement model element |
| * @param index insertion position |
| * @param flags change flags |
| */ |
| public VMDelta(Object element, int index, int flags) { |
| super(element, index, flags); |
| fElement = element; |
| fIndex = index; |
| fFlags = flags; |
| } |
| |
| /** |
| * Constructs a new delta for the given element at the specified index |
| * relative to its parent with the given number of children. |
| * |
| * @param element model element |
| * @param index insertion position |
| * @param flags change flags |
| * @param childCount number of children this node has |
| */ |
| public VMDelta(Object element, int index, int flags, int childCount) { |
| super(element, index, flags, childCount); |
| fElement = element; |
| fIndex = index; |
| fFlags = flags; |
| fChildCount = childCount; |
| } |
| |
| /** |
| * Returns the non-VMC element if one is set, otherwise returns the VMC |
| * element of this delta node. |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getElement() |
| */ |
| @Override |
| public Object getElement() { |
| return fElement; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getFlags() |
| */ |
| @Override |
| public int getFlags() { |
| return fFlags; |
| } |
| |
| /** |
| * Sets this delta's flags. |
| * |
| * @param flags |
| */ |
| @Override |
| public void setFlags(int flags) { |
| fFlags = flags; |
| } |
| |
| @Override |
| public void setChildCount(int count) { |
| fChildCount = count; |
| } |
| |
| /** |
| * Adds a child node to this delta with the given element and change flags, |
| * and returns the child delta. |
| * |
| * @param element child element to add |
| * @param flags change flags for child |
| * @return newly created child delta |
| */ |
| @Override |
| public VMDelta addNode(Object element, int flags) { |
| VMDelta node = new VMDelta(element, flags); |
| node.setParent(this); |
| addDelta(node); |
| return node; |
| } |
| |
| /** |
| * Adds a child node to this delta to replace the given element with the |
| * specified replacement element and change flags, and returns the |
| * newly created child delta. |
| * |
| * @param element child element to add to this delta |
| * @param replacement replacement element for the child element |
| * @param flags change flags |
| * @return newly created child delta |
| */ |
| @Override |
| public VMDelta addNode(Object element, Object replacement, int flags) { |
| VMDelta node = new VMDelta(element, replacement, flags); |
| node.setParent(this); |
| addDelta(node); |
| return node; |
| } |
| |
| /** |
| * Adds a child delta to this delta to insert the specified element at |
| * the given index, and returns the newly created child delta. |
| * |
| * @param element child element in insert |
| * @param index index of insertion |
| * @param flags change flags |
| * @return newly created child delta |
| */ |
| @Override |
| public VMDelta addNode(Object element, int index, int flags) { |
| VMDelta node = new VMDelta(element, index, flags); |
| node.setParent(this); |
| addDelta(node); |
| return node; |
| } |
| |
| /** |
| * Adds a child delta to this delta at the specified index with the |
| * given number of children, and returns the newly created child delta. |
| * |
| * @param element child element in insert |
| * @param index index of the element relative to parent |
| * @param flags change flags |
| * @param numChildren the number of children the element has |
| * @return newly created child delta |
| */ |
| @Override |
| public VMDelta addNode(Object element, int index, int flags, int numChildren) { |
| VMDelta node = new VMDelta(element, index, flags, numChildren); |
| node.setParent(this); |
| addDelta(node); |
| return node; |
| } |
| |
| /** |
| * Returns the child delta for the given element, or <code>null</code> if none. |
| * |
| * @param element child element |
| * @return corresponding delta node, or <code>null</code> |
| * |
| * @since 1.1 |
| */ |
| @Override |
| public VMDelta getChildDelta(Object element) { |
| if (fNodes != null) { |
| for (int i = 0; i < fNodes.length; i++) { |
| VMDelta delta = fNodes[i]; |
| if (element.equals(delta.getElement())) { |
| return delta; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Sets the parent delta of this delta |
| * |
| * @param node parent delta |
| */ |
| void setParent(VMDelta node) { |
| fParent = node; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getParent() |
| */ |
| @Override |
| public VMDelta getParentDelta() { |
| return fParent; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getReplacementElement() |
| */ |
| @Override |
| public Object getReplacementElement() { |
| return fReplacement; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getIndex() |
| */ |
| @Override |
| public int getIndex() { |
| return fIndex; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.IModelDelta#getNodes() |
| */ |
| @Override |
| public VMDelta[] getChildDeltas() { |
| return fNodes; |
| } |
| |
| private void addDelta(VMDelta delta) { |
| if (fNodes.length == 0) { |
| fNodes = new VMDelta[]{delta}; |
| } else { |
| VMDelta[] nodes = new VMDelta[fNodes.length + 1]; |
| System.arraycopy(fNodes, 0, nodes, 0, fNodes.length); |
| nodes[fNodes.length] = delta; |
| fNodes = nodes; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder buf = new StringBuilder(); |
| buf.append("Model Delta Start\n"); //$NON-NLS-1$ |
| appendDetail(buf, this, 0); |
| buf.append("Model Delta End\n"); //$NON-NLS-1$ |
| return buf.toString(); |
| } |
| |
| private void appendDetail(StringBuilder buf, VMDelta delta, int depth) { |
| String indent = ""; // $NON-NLS-1$ |
| for (int i = 0; i < depth; i++) { |
| indent += '\t'; |
| } |
| buf.append(indent).append("\tElement: "); //$NON-NLS-1$ |
| buf.append(delta.getElement()); |
| buf.append('\n'); |
| buf.append(indent).append("\t\tFlags: "); //$NON-NLS-1$ |
| int flags = delta.getFlags(); |
| if (flags == 0) { |
| buf.append("NO_CHANGE"); //$NON-NLS-1$ |
| } else { |
| if ((flags & IModelDelta.ADDED) > 0) { |
| buf.append("ADDED | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.CONTENT) > 0) { |
| buf.append("CONTENT | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.EXPAND) > 0) { |
| buf.append("EXPAND | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.COLLAPSE) > 0) { |
| buf.append("COLLAPSE | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.INSERTED) > 0) { |
| buf.append("INSERTED | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.REMOVED) > 0) { |
| buf.append("REMOVED | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.REPLACED) > 0) { |
| buf.append("REPLACED | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.SELECT) > 0) { |
| buf.append("SELECT | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.STATE) > 0) { |
| buf.append("STATE | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.INSTALL) > 0) { |
| buf.append("INSTALL | "); //$NON-NLS-1$ |
| } |
| if ((flags & IModelDelta.UNINSTALL) > 0) { |
| buf.append("UNINSTALL | "); //$NON-NLS-1$ |
| } |
| } |
| buf.append('\n'); |
| buf.append(indent).append("\t\tIndex: "); //$NON-NLS-1$ |
| buf.append(delta.fIndex); |
| buf.append(" Child Count: "); //$NON-NLS-1$ |
| buf.append(delta.fChildCount); |
| buf.append('\n'); |
| IModelDelta[] nodes = delta.getChildDeltas(); |
| for (int i = 0; i < nodes.length; i++) { |
| appendDetail(buf, (VMDelta)nodes[i], depth+1); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.provisional.IModelDelta#getChildCount() |
| */ |
| @Override |
| public int getChildCount() { |
| return fChildCount; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.provisional.IModelDelta#accept(org.eclipse.debug.internal.ui.viewers.provisional.IModelDeltaVisitor) |
| */ |
| @Override |
| public void accept(IModelDeltaVisitor visitor) { |
| doAccept(visitor, 0); |
| } |
| |
| @Override |
| protected void doAccept(IModelDeltaVisitor visitor, int depth) { |
| if (visitor.visit(this, depth)) { |
| ModelDelta[] childDeltas = getChildDeltas(); |
| for (int i = 0; i < childDeltas.length; i++) { |
| ((VMDelta)childDeltas[i]).doAccept(visitor, depth+1); |
| } |
| } |
| } |
| |
| @Override |
| public void setIndex(final int index) { |
| fIndex = index; |
| } |
| } |