/*******************************************************************************
* Copyright (c) 2005, 2009 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.ltk.internal.ui.refactoring.history;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialogWithToggle;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ltk.core.refactoring.RefactoringDescriptorProxy;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.internal.core.refactoring.history.IRefactoringDescriptorDeleteQuery;
import org.eclipse.ltk.internal.ui.refactoring.BasicElementLabels;
import org.eclipse.ltk.internal.ui.refactoring.Messages;
import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIMessages;
import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIPlugin;
/**
* Default implementation of a refactoring descriptor delete query.
*
* @since 3.3
*/
public final class RefactoringDescriptorDeleteQuery implements IRefactoringDescriptorDeleteQuery {
/** Preference key for the warn delete preference */
private static final String PREFERENCE_DO_NOT_WARN_DELETE= RefactoringUIPlugin.getPluginId() + ".do.not.warn.delete.descriptor"; //$NON-NLS-1$;
/** The number of descriptors to delete */
private final int fCount;
/** The project to use */
private final IProject fProject;
/** The return code */
private int fReturnCode= -1;
/** The shell to use */
private final Shell fShell;
/** Has the user already been warned once? */
private boolean fWarned= false;
/**
* Creates a new refactoring descriptor delete query.
*
* @param shell
* the shell to use
* @param project
* the project to use, or <code>null</code>
* @param count
* the number of descriptors to delete
*/
public RefactoringDescriptorDeleteQuery(final Shell shell, final IProject project, final int count) {
Assert.isNotNull(shell);
Assert.isTrue(count >= 0);
fShell= shell;
fProject= project;
fCount= count;
}
/**
* {@inheritDoc}
*/
public boolean hasDeletions() {
return fReturnCode == IDialogConstants.YES_ID;
}
/**
* {@inheritDoc}
*/
public RefactoringStatus proceed(final RefactoringDescriptorProxy proxy) {
final IPreferenceStore store= RefactoringUIPlugin.getDefault().getPreferenceStore();
if (!fWarned) {
if (!store.getBoolean(PREFERENCE_DO_NOT_WARN_DELETE)) {
fShell.getDisplay().syncExec(new Runnable() {
public final void run() {
if (!fShell.isDisposed()) {
final String count= new Integer(fCount).toString();
String message= null;
if (fProject != null) {
if (fCount == 1) {
message= Messages.format(RefactoringUIMessages.RefactoringPropertyPage_confirm_delete_pattern_singular, BasicElementLabels.getResourceName(fProject));
} else {
message= Messages.format(RefactoringUIMessages.RefactoringPropertyPage_confirm_delete_pattern_plural, new String[] { count,
BasicElementLabels.getResourceName(fProject) });
}
}
else {
if (fCount == 1) {
message= RefactoringUIMessages.RefactoringDescriptorDeleteQuery_confirm_deletion_singular;
} else {
message= Messages.format(RefactoringUIMessages.RefactoringDescriptorDeleteQuery_confirm_deletion_plural, count);
}
}
final MessageDialogWithToggle dialog= MessageDialogWithToggle.openYesNoQuestion(fShell, RefactoringUIMessages.RefactoringPropertyPage_confirm_delete_caption, message, RefactoringUIMessages.RefactoringHistoryWizard_do_not_show_message, store.getBoolean(PREFERENCE_DO_NOT_WARN_DELETE), null, null);
store.setValue(PREFERENCE_DO_NOT_WARN_DELETE, dialog.getToggleState());
fReturnCode= dialog.getReturnCode();
}
}
});
} else
fReturnCode= IDialogConstants.YES_ID;
}
fWarned= true;
if (fReturnCode == IDialogConstants.YES_ID)
return new RefactoringStatus();
return RefactoringStatus.createErrorStatus(IDialogConstants.NO_LABEL);
}
}