Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2006 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.team.internal.ui.synchronize.actions; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Arrays; import java.util.Iterator; import java.util.List; import org.eclipse.core.runtime.*; import org.eclipse.jface.action.Action; import org.eclipse.jface.dialogs.*; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.widgets.Display; import org.eclipse.team.core.TeamException; import org.eclipse.team.internal.ui.TeamUIMessages; import org.eclipse.team.internal.ui.Utils; import org.eclipse.team.ui.TeamUI; import org.eclipse.team.ui.synchronize.*; import org.eclipse.ui.*; import org.eclipse.ui.dialogs.ListSelectionDialog; import org.eclipse.ui.model.WorkbenchPartLabelProvider; /** * Action to remove the given participant from the synchronize manager. * @since 3.0 */ public class RemoveSynchronizeParticipantAction extends Action { private final ISynchronizeView view; private boolean removeAll; public RemoveSynchronizeParticipantAction(ISynchronizeView view, boolean removeAll) { this.view = view; this.removeAll = removeAll; if (removeAll) { Utils.initAction(this, "action.removeAllPage."); //$NON-NLS-1$ } else { Utils.initAction(this, "action.removePage."); //$NON-NLS-1$ } } public void run() { try { PlatformUI.getWorkbench().getProgressService().busyCursorWhile(new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { if (removeAll) { removeAll(); } else { removeCurrent(); } } }); } catch (InvocationTargetException e) { Utils.handle(e); } catch (InterruptedException e) { // Cancelled. Just ignore } } private void removeCurrent() { final ISynchronizeParticipant participant = view.getParticipant(); if (participant != null) { final List dirtyModels = getDirtyModels(new ISynchronizeParticipant[] { participant }); if (participant.isPinned() || !dirtyModels.isEmpty()) { final boolean[] keepGoing = new boolean[] { false }; Display.getDefault().syncExec(new Runnable() { public void run() { if (!dirtyModels.isEmpty()) { keepGoing[0] = promptToSave(dirtyModels); } else { keepGoing[0] = MessageDialog.openQuestion(view.getSite().getShell(), TeamUIMessages.RemoveSynchronizeParticipantAction_0, TeamUIMessages.RemoveSynchronizeParticipantAction_1); } } }); if (!keepGoing[0]) { return; } } TeamUI.getSynchronizeManager() .removeSynchronizeParticipants(new ISynchronizeParticipant[] { participant }); } } private void removeAll() { ISynchronizeManager manager = TeamUI.getSynchronizeManager(); ISynchronizeParticipantReference[] refs = manager.getSynchronizeParticipants(); ArrayList removals = new ArrayList(); for (int i = 0; i < refs.length; i++) { ISynchronizeParticipantReference reference = refs[i]; ISynchronizeParticipant p; try { p = reference.getParticipant(); if (!p.isPinned()) removals.add(p); } catch (TeamException e) { // keep going } } ISynchronizeParticipant[] toRemove = (ISynchronizeParticipant[]) removals .toArray(new ISynchronizeParticipant[removals.size()]); final List dirtyModels = getDirtyModels(toRemove); if (!dirtyModels.isEmpty()) { final boolean[] keepGoing = new boolean[] { false }; Display.getDefault().syncExec(new Runnable() { public void run() { if (!dirtyModels.isEmpty()) { keepGoing[0] = promptToSave(dirtyModels); } } }); if (!keepGoing[0]) { return; } } manager.removeSynchronizeParticipants(toRemove); } private boolean promptToSave(List dirtyModels) { if (dirtyModels.size() == 1) { Saveable model = (Saveable) dirtyModels.get(0); String message = NLS.bind(TeamUIMessages.RemoveSynchronizeParticipantAction_2, model.getName()); // Show a dialog. String[] buttons = new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL }; MessageDialog d = new MessageDialog(view.getSite().getShell(), TeamUIMessages.RemoveSynchronizeParticipantAction_3, null, message, MessageDialog.QUESTION, buttons, 0); int choice = d.open(); // Branch on the user choice. // The choice id is based on the order of button labels // above. switch (choice) { case 0: // yes break; case 1: // no return true; default: case 2: // cancel return false; } } else { ListSelectionDialog dlg = new ListSelectionDialog(view.getSite().getShell(), dirtyModels, new ArrayContentProvider(), new WorkbenchPartLabelProvider(), TeamUIMessages.RemoveSynchronizeParticipantAction_4); dlg.setInitialSelections(dirtyModels.toArray()); dlg.setTitle(TeamUIMessages.RemoveSynchronizeParticipantAction_5); int result = dlg.open(); //Just return false to prevent the operation continuing if (result == IDialogConstants.CANCEL_ID) return false; dirtyModels = Arrays.asList(dlg.getResult()); } // If the editor list is empty return. if (dirtyModels.isEmpty()) return true; // Create save block. final List finalModels = dirtyModels; IRunnableWithProgress progressOp = new IRunnableWithProgress() { public void run(IProgressMonitor monitor) { monitor.beginTask(null, finalModels.size()); for (Iterator i = finalModels.iterator(); i.hasNext();) { Saveable model = (Saveable) i.next(); if (model.isDirty()) { try { model.doSave(new SubProgressMonitor(monitor, 1)); } catch (CoreException e) { ErrorDialog.openError(view.getSite().getShell(), null, e.getMessage(), e.getStatus()); } } if (monitor.isCanceled()) break; } monitor.done(); } }; try { PlatformUI.getWorkbench().getProgressService().run(true, true, progressOp); } catch (InvocationTargetException e) { Utils.handleError(view.getSite().getShell(), e, null, null); return false; } catch (InterruptedException e) { // Ignore } // TODO: How do we handle a cancel during save? return true; } private List getDirtyModels(ISynchronizeParticipant[] participants) { List result = new ArrayList(); for (int i = 0; i < participants.length; i++) { ISynchronizeParticipant participant = participants[i]; if (participant instanceof ModelSynchronizeParticipant) { ModelSynchronizeParticipant msp = (ModelSynchronizeParticipant) participant; Saveable s = msp.getActiveSaveable(); if (s != null && s.isDirty()) result.add(s); } } return result; } }