| /******************************************************************************* |
| * Copyright (c) 2005, 2010 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 Rvier Systems - added support for columns (bug 235646) |
| *******************************************************************************/ |
| |
| package org.eclipse.debug.internal.ui.viewers.update; |
| |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IExpressionManager; |
| import org.eclipse.debug.core.model.IExpression; |
| import org.eclipse.debug.internal.core.IExpressionsListener2; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta; |
| import org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| |
| /** |
| * Model proxy that fires model delta updates for the ExpressionManager. |
| * |
| * @see org.eclipse.debug.internal.core.ExpressionManager |
| */ |
| public class ExpressionManagerModelProxy extends AbstractModelProxy implements IExpressionsListener2, IPropertyChangeListener { |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.update.EventHandlerModelProxy#init(org.eclipse.debug.internal.ui.viewers.IPresentationContext) |
| */ |
| public void init(IPresentationContext context) { |
| super.init(context); |
| getExpressionManager().addExpressionListener(this); |
| context.addPropertyChangeListener(this); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy#installed(org.eclipse.jface.viewers.Viewer) |
| */ |
| public void installed(Viewer viewer) { |
| updateExpressions(getExpressionManager().getExpressions(), IModelDelta.INSTALL); |
| } |
| |
| /** |
| * @return the default expression manager from the debug plugin |
| */ |
| protected IExpressionManager getExpressionManager() { |
| return DebugPlugin.getDefault().getExpressionManager(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.update.EventHandlerModelProxy#dispose() |
| */ |
| public synchronized void dispose() { |
| getPresentationContext().removePropertyChangeListener(this); |
| super.dispose(); |
| getExpressionManager().removeExpressionListener(this); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.core.IExpressionsListener2#expressionsMoved(org.eclipse.debug.core.model.IExpression[], int) |
| */ |
| public void expressionsMoved(IExpression[] expressions, int index){ |
| ModelDelta delta = new ModelDelta(getExpressionManager(), IModelDelta.NO_CHANGE); |
| int count = getElementsCount(); |
| for (int i = 0; i < expressions.length; i++) { |
| IExpression expression = expressions[i]; |
| delta.addNode(expression, IModelDelta.REMOVED); |
| } |
| for (int i = 0; i < expressions.length; i++) { |
| IExpression expression = expressions[i]; |
| delta.addNode(expression, index+i, IModelDelta.ADDED, count); |
| } |
| fireModelChanged(delta); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.core.IExpressionsListener2#expressionsInserted(org.eclipse.debug.core.model.IExpression[], int) |
| */ |
| public void expressionsInserted(IExpression[] expressions, int index){ |
| int count = getElementsCount(); |
| ModelDelta delta = new ModelDelta(getExpressionManager(), IModelDelta.NO_CHANGE); |
| for (int i = 0; i < expressions.length; i++) { |
| IExpression expression = expressions[i]; |
| delta.addNode(expression, index+i, IModelDelta.ADDED | IModelDelta.INSTALL, count); |
| } |
| fireModelChanged(delta); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.IExpressionsListener#expressionsAdded(org.eclipse.debug.core.model.IExpression[]) |
| */ |
| public void expressionsAdded(IExpression[] expressions) { |
| int index = getExpressionManager().getExpressions().length - expressions.length; |
| int count = getElementsCount(); |
| ModelDelta delta = new ModelDelta(getExpressionManager(), IModelDelta.NO_CHANGE); |
| for (int i = 0; i < expressions.length; i++) { |
| IExpression expression = expressions[i]; |
| delta.addNode(expression, index+i, IModelDelta.ADDED | IModelDelta.INSTALL, count); |
| } |
| fireModelChanged(delta); |
| updateExpressions(expressions, IModelDelta.ADDED | IModelDelta.INSTALL); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.IExpressionsListener#expressionsRemoved(org.eclipse.debug.core.model.IExpression[]) |
| */ |
| public void expressionsRemoved(IExpression[] expressions) { |
| updateExpressions(expressions, IModelDelta.REMOVED | IModelDelta.UNINSTALL); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.IExpressionsListener#expressionsChanged(org.eclipse.debug.core.model.IExpression[]) |
| */ |
| public void expressionsChanged(IExpression[] expressions) { |
| updateExpressions(expressions, IModelDelta.CONTENT | IModelDelta.STATE); |
| } |
| |
| private void updateExpressions(IExpression[] expressions, int flags) { |
| ModelDelta delta = new ModelDelta(getExpressionManager(), IModelDelta.NO_CHANGE); |
| for (int i = 0; i < expressions.length; i++) { |
| IExpression expression = expressions[i]; |
| delta.addNode(expression, flags); |
| } |
| fireModelChanged(delta); |
| } |
| |
| private int getElementsCount() { |
| // Account for the "Add new expression" element only if columns are |
| // displayed. |
| return getExpressionManager().getExpressions().length + |
| (getPresentationContext().getColumns() != null ? 1 : 0); |
| } |
| |
| public void propertyChange(PropertyChangeEvent event) { |
| // If columns are turned on/off, refresh the view to account for the |
| // "Add new expression" element. |
| if (IPresentationContext.PROPERTY_COLUMNS.equals(event.getProperty())) { |
| fireModelChanged(new ModelDelta(getExpressionManager(), IModelDelta.CONTENT)); |
| } |
| } |
| |
| |
| } |