/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.eclipse.menu;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.drools.eclipse.wizard.decisiontable.NewDTFileWizard;
import org.drools.eclipse.wizard.dsl.NewDSLFileWizard;
import org.drools.eclipse.wizard.project.NewDroolsProjectWizard;
import org.drools.eclipse.wizard.rule.NewRulePackageWizard;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowPulldownDelegate;
/**
* Menu driver for launching wizards etc from the top level toolbar.
*
* More can be added to this as needed.
*/
public class RuleHelperActionDelegate
implements
IWorkbenchWindowPulldownDelegate {
private IWorkbench workbench;
private Menu menu;
/** Return a menu which launches the various wizards */
public Menu getMenu(Control parent) {
setMenu( new Menu( parent ) );
final Shell shell = parent.getShell();
addProjectWizard( menu,
shell );
addRuleWizard( menu,
shell );
addDSLWizard( menu,
shell );
addDTWizard( menu,
shell );
return menu;
}
private void setMenu(Menu menu) {
if (this.menu != null) {
this.menu.dispose();
}
this.menu = menu;
}
private void addDTWizard(Menu menu,
final Shell shell) {
MenuItem dsl = new MenuItem( menu,
SWT.NONE );
dsl.setText( "New Decision Table" );
dsl.addSelectionListener( new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
NewDTFileWizard wizard = new NewDTFileWizard();
launchWizard( shell, wizard );
}
public void widgetDefaultSelected(SelectionEvent e) {}
});
}
private void addProjectWizard(Menu menu, final Shell shell) {
MenuItem rule = new MenuItem(menu, SWT.NONE);
rule.setText("New Drools Project");
rule.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
NewDroolsProjectWizard wizard = new NewDroolsProjectWizard();
launchWizard(shell, wizard);
}
public void widgetDefaultSelected(SelectionEvent e) {
}
});
}
private void addRuleWizard(Menu menu,
final Shell shell) {
MenuItem rule = new MenuItem( menu,
SWT.NONE );
rule.setText( "New Rule" );
rule.addSelectionListener( new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
NewRulePackageWizard wizard = new NewRulePackageWizard();
launchWizard( shell,
wizard );
}
public void widgetDefaultSelected(SelectionEvent e) {}
});
}
private void addDSLWizard(Menu menu,
final Shell shell) {
MenuItem dsl = new MenuItem( menu,
SWT.NONE );
dsl.setText( "New Domain Specific Language" );
dsl.addSelectionListener( new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
NewDSLFileWizard wizard = new NewDSLFileWizard();
launchWizard( shell, wizard );
}
public void widgetDefaultSelected(SelectionEvent e) {}
});
}
private void launchWizard(Shell shell,
INewWizard wizard) {
wizard.init( workbench,
new DummySelection() );
WizardDialog dialog = new WizardDialog( shell,
wizard );
dialog.open();
}
public void dispose() {
}
public void init(IWorkbenchWindow window) {
workbench = window.getWorkbench();
}
public void run(IAction action) {
}
public void selectionChanged(IAction action,
ISelection selection) {
}
/** Stub structured selection listener, as is required to launch the wizard */
static class DummySelection implements IStructuredSelection {
public Object getFirstElement() {
return null;
}
public Iterator<?> iterator() {
return (new ArrayList<Object>()).iterator();
}
public int size() {
return 0;
}
public Object[] toArray() {
return null;
}
public List<?> toList() {
return null;
}
public boolean isEmpty() {
return true;
}
}
}