/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.model.ui.wizards.standard;
import java.beans.PropertyChangeEvent;
import java.util.Properties;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.wizard.IWizard;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.widgets.Composite;
import org.jboss.tools.common.meta.action.XAttributeData;
import org.jboss.tools.common.meta.action.impl.SpecialWizardSupport;
import org.jboss.tools.common.meta.action.impl.WizardDataValidator;
import org.jboss.tools.common.model.XModelException;
import org.jboss.tools.common.model.ui.ModelUIPlugin;
import org.jboss.tools.common.model.ui.attribute.XAttributeSupport;
public class DefaultStandardStep extends WizardPage implements java.beans.PropertyChangeListener {
protected DefaultStandardWizard wizard;
protected SpecialWizardSupport support;
protected int id;
protected XAttributeSupport attributes = new XAttributeSupport();
boolean isDataChanged = false;
protected Composite stepControl = null;
protected WizardDataValidator validator;
protected boolean isNextEnabled = true;
boolean loading = false;
public DefaultStandardStep(SpecialWizardSupport support, int id) {
super(""); //$NON-NLS-1$
this.support = support;
this.id = id;
validator = support.getValidator(id);
attributes.removePropertyChangeListener(this);
attributes.init(support.getTarget(), support.getEntityData()[id]);
attributes.addPropertyChangeListener(this);
}
public void dispose() {
super.dispose();
if (attributes!=null) attributes.dispose();
attributes = null;
}
public void setWizard(IWizard wizard) {
super.setWizard(wizard);
if(wizard instanceof DefaultStandardWizard) {
this.wizard = (DefaultStandardWizard)wizard;
}
}
public void createControl(Composite parent) {
attributes.removePropertyChangeListener(this);
attributes.init(support.getTarget(), support.getEntityData()[id]);
attributes.addPropertyChangeListener(this);
stepControl = attributes.createControl(parent);
loading = true;
try {
attributes.load();
} finally {
loading = false;
}
setControl(stepControl);
}
public void setVisible(boolean visible) {
super.setVisible(visible);
if(visible) {
if(support.getStepId() > id) {
try {
support.action(SpecialWizardSupport.BACK);
} catch (XModelException e) {
ModelUIPlugin.getPluginLog().logError(e);
}
}
setTitle(support.getSubtitle());
loading = true;
try {
attributes.load();
} finally {
loading = false;
}
validateAll();
String focusAttr = support.getFocusAttribute(id);
if(focusAttr != null && attributes.getFieldEditorByName(focusAttr) != null) {
attributes.getFieldEditorByName(focusAttr).setFocus();
}
}
}
private void validateAll() {
attributes.store();
validate();
updateFieldEnablement();
}
public void propertyChange(PropertyChangeEvent arg0) {
if(loading) return;
isDataChanged = true;
validateAll();
}
public void validate() {
validator = support.getValidator(id);
if(validator == null) return;
wizard.dataChanged(validator, attributes.getValues());
setPageComplete(computePageComplete());
}
private boolean computePageComplete() {
String[] actions = support.getActionNames(id);
boolean b = true;
for(int i = 0; i < actions.length && b; i++) {
if(actions[i].equals(SpecialWizardSupport.NEXT) && !support.isActionEnabled(SpecialWizardSupport.NEXT)) b = false;
else if(actions[i].equals(SpecialWizardSupport.FINISH) && !support.isActionEnabled(SpecialWizardSupport.FINISH)) b = false;
}
return b;
}
public boolean isDataChanged() {
return isDataChanged;
}
public void updateFieldEnablement() {
if(stepControl == null || stepControl.isDisposed()) return;
Properties p = attributes.getValues();
XAttributeData[] ad = support.getEntityData()[id].getAttributeData();
for (int i = 0; i < ad.length; i++) {
String n = ad[i].getAttribute().getName();
boolean b = support.isFieldEditorEnabled(id, n, p);
FieldEditor f = attributes.getFieldEditorByName(n);
if(f != null) f.setEnabled(b, stepControl);
}
}
public boolean canFlipToNextPage() {
if(!hasNextButton()) return false;
return isPageComplete() &&
support.isActionEnabled(SpecialWizardSupport.NEXT)
&& isNextEnabled;
}
private boolean hasNextButton() {
String[] actions = support.getActionNames(id);
for (int i = 0; i < actions.length; i++) {
if(actions[i].equals(SpecialWizardSupport.NEXT)) return true;
}
return false;
}
public void save() {
if(attributes != null) attributes.store();
}
public void load() {
if(attributes != null) attributes.load();
}
}