| /******************************************************************************* |
| * Copyright (c) 2000, 2012 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.jdt.internal.debug.ui.actions; |
| |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.jdt.internal.debug.ui.launcher.IClasspathViewer; |
| import org.eclipse.jdt.launching.IRuntimeClasspathEntry; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.actions.SelectionListenerAction; |
| |
| /** |
| * Action used with a runtime classpath viewer. |
| */ |
| public abstract class RuntimeClasspathAction extends SelectionListenerAction { |
| |
| public static final int DEFAULT= 0; |
| public static final int ADD= 1; |
| public static final int REMOVE= 2; |
| public static final int MOVE= 3; |
| |
| private IClasspathViewer fViewer; |
| private Button fButton; |
| private Shell fShell; |
| |
| public RuntimeClasspathAction(String label, IClasspathViewer viewer) { |
| super(label); |
| setViewer(viewer); |
| } |
| |
| /** |
| * Sets the viewer on which this action operates. |
| * |
| * @param viewer the viewer on which this action operates |
| */ |
| public void setViewer(IClasspathViewer viewer) { |
| if (fViewer != null) { |
| fViewer.removeSelectionChangedListener(this); |
| } |
| fViewer = viewer; |
| if (fViewer != null) { |
| fViewer.addSelectionChangedListener(this); |
| update(); |
| } |
| } |
| |
| /** |
| * Returns the viewer on which this action operates. |
| * |
| * @return the viewer on which this action operates |
| */ |
| protected IClasspathViewer getViewer() { |
| return fViewer; |
| } |
| |
| /** |
| * Returns the selected items in the list, in the order they are |
| * displayed. |
| * |
| * @return targets for an action |
| */ |
| protected List<IRuntimeClasspathEntry> getOrderedSelection() { |
| List<IRuntimeClasspathEntry> targets = new ArrayList<IRuntimeClasspathEntry>(); |
| List<?> selection = ((IStructuredSelection)getViewer().getSelection()).toList(); |
| IRuntimeClasspathEntry[] entries = getViewer().getEntries(); |
| for (int i = 0; i < entries.length; i++) { |
| IRuntimeClasspathEntry target = entries[i]; |
| if (selection.contains(target)) { |
| targets.add(target); |
| } |
| } |
| return targets; |
| } |
| |
| /** |
| * Returns a list (copy) of the entries in the viewer |
| * @return the complete listing of all of the entries in the viewer |
| */ |
| protected List<IRuntimeClasspathEntry> getEntriesAsList() { |
| IRuntimeClasspathEntry[] entries = getViewer().getEntries(); |
| List<IRuntimeClasspathEntry> list = new ArrayList<IRuntimeClasspathEntry>(entries.length); |
| for (int i = 0; i < entries.length; i++) { |
| list.add(entries[i]); |
| } |
| return list; |
| } |
| |
| /** |
| * Updates the entries to the entries in the given list |
| * @param list the list of {@link IRuntimeClasspathEntry}s to set |
| */ |
| protected void setEntries(List<IRuntimeClasspathEntry> list) { |
| getViewer().setEntries(list.toArray(new IRuntimeClasspathEntry[list.size()])); |
| // update all selection listeners |
| getViewer().setSelection(getViewer().getSelection()); |
| } |
| |
| /** |
| * Returns whether the item at the given index in the list |
| * (visually) is selected. |
| * @param selection the current selection from the viewer |
| * @param index the index to ask about |
| * @return <code>true</code> if the given index is in the selection, <code>false</code> otherwise |
| */ |
| protected boolean isIndexSelected(IStructuredSelection selection, int index) { |
| if (selection.isEmpty()) { |
| return false; |
| } |
| Iterator<?> entries = selection.iterator(); |
| List<IRuntimeClasspathEntry> list = getEntriesAsList(); |
| while (entries.hasNext()) { |
| Object next = entries.next(); |
| if (list.indexOf(next) == index) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Sets the {@link Button} that invokes this action |
| * @param button the new {@link Button} to set as the backing widget for this action |
| */ |
| public void setButton(Button button) { |
| fButton = button; |
| button.addSelectionListener(new SelectionAdapter() { |
| @Override |
| public void widgetSelected(SelectionEvent evt) { |
| run(); |
| } |
| }); |
| fButton.setEnabled(false); |
| } |
| /** |
| * @see IAction#setEnabled(boolean) |
| */ |
| @Override |
| public void setEnabled(boolean enabled) { |
| super.setEnabled(enabled); |
| if (fButton != null) { |
| fButton.setEnabled(enabled); |
| } |
| } |
| |
| /** |
| * Updates the enabled state. |
| */ |
| protected void update() { |
| selectionChanged((IStructuredSelection)getViewer().getSelection()); |
| } |
| |
| /** |
| * Returns the shell used to realize this action's dialog (if any). |
| * @return the current {@link Shell} |
| */ |
| protected Shell getShell() { |
| if (fShell == null) { |
| fShell= getViewer().getShell(); |
| } |
| return fShell; |
| } |
| |
| /** |
| * Sets the shell used to realize this action's dialog (if any). |
| * @param shell the current shell |
| */ |
| public void setShell(Shell shell) { |
| fShell= shell; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.actions.SelectionListenerAction#updateSelection(org.eclipse.jface.viewers.IStructuredSelection) |
| */ |
| @Override |
| protected boolean updateSelection(IStructuredSelection selection) { |
| return getViewer().updateSelection(getActionType(), selection); |
| } |
| |
| |
| protected int getActionType() { |
| return DEFAULT; |
| } |
| } |