/*******************************************************************************
* Copyright (c) 2007, 2010 Spring IDE Developers
* 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:
* Spring IDE Developers - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.webflow.ui.graph.dialogs;
import ognl.Ognl;
import ognl.OgnlException;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.viewers.DecoratingLabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.dialogs.ElementListSelectionDialog;
import org.springframework.ide.eclipse.webflow.core.internal.model.WebflowModelXmlUtils;
import org.springframework.ide.eclipse.webflow.core.model.ICloneableModelElement;
import org.springframework.ide.eclipse.webflow.core.model.IDecisionState;
import org.springframework.ide.eclipse.webflow.core.model.IIf;
import org.springframework.ide.eclipse.webflow.core.model.IState;
import org.springframework.ide.eclipse.webflow.core.model.IWebflowModelElement;
import org.springframework.ide.eclipse.webflow.ui.graph.model.WebflowModelLabelDecorator;
import org.springframework.ide.eclipse.webflow.ui.graph.model.WebflowModelLabelProvider;
/**
* @author Christian Dupuis
*/
public class IfPropertiesDialog extends TitleAreaDialog {
/**
*
*/
private static final String EXPRESSION_PREFIX = "${";
/**
*
*/
private static final String EXPRESSION_SUFFIX = "}";
/**
*
*/
private Button browseElseButton;
/**
*
*/
private Button browseThenButton;
/**
*
*/
private SelectionListener buttonListener = new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleButtonPressed((Button) e.widget);
}
};
/**
*
*/
private IIf cloneIf;
/**
*
*/
private Text elseText;
/**
*
*/
private boolean isNew = false;
/**
*
*/
private int LABEL_WIDTH = 70;
/**
*
*/
private Button ognlButton;
/**
*
*/
private Button okButton;
/**
*
*/
private Text onText;
/**
*
*/
private IDecisionState parent;
/**
*
*/
private IIf theIf;
/**
*
*/
private Text thenText;
/**
*
*
* @param parentShell
* @param state
* @param newMode
* @param parent
*/
public IfPropertiesDialog(Shell parentShell, IDecisionState parent,
IIf state, boolean newMode) {
super(parentShell);
this.theIf = state;
this.parent = parent;
this.cloneIf = (IIf) ((ICloneableModelElement<IIf>) this.theIf)
.cloneModelElement();
this.isNew = newMode;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
*/
protected void buttonPressed(int buttonId) {
if (buttonId == IDialogConstants.OK_ID) {
this.cloneIf.setTest(trimString(getTest()));
if (isNew) {
if (this.thenText != null && this.thenText.getText() != null
&& !"".equals(this.thenText.getText())) {
// this.theIf.setThenTransition(new IfTransition(
// (ITransitionableTo) WebFlowCoreUtils.getStateById(
// parent, this.thenText.getText()),
// this.theIf, true));
}
if (this.elseText != null && this.elseText.getText() != null
&& !"".equals(this.elseText.getText())) {
// this.theIf.setElseTransition(new IfTransition(
// (ITransitionableTo) WebFlowCoreUtils.getStateById(
// parent, this.elseText.getText()),
// this.theIf, false));
}
}
((ICloneableModelElement<IIf>) this.theIf)
.applyCloneValues(this.cloneIf);
}
super.buttonPressed(buttonId);
}
/* (non-Javadoc)
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
*/
protected void configureShell(Shell shell) {
super.configureShell(shell);
shell.setText(getShellTitle());
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
*/
protected void createButtonsForButtonBar(Composite parent) {
// create OK and Cancel buttons by default
okButton = createButton(parent, IDialogConstants.OK_ID,
IDialogConstants.OK_LABEL, true);
createButton(parent, IDialogConstants.CANCEL_ID,
IDialogConstants.CANCEL_LABEL, false);
// do this here because setting the text will set enablement on the
// ok button
onText.setFocus();
if (this.theIf != null && this.theIf.getTest() != null) {
okButton.setEnabled(true);
}
else {
okButton.setEnabled(false);
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.TitleAreaDialog#createContents(org.eclipse.swt.widgets.Composite)
*/
protected Control createContents(Composite parent) {
Control contents = super.createContents(parent);
setTitle(getTitle());
setMessage(getMessage());
return contents;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
protected Control createDialogArea(Composite parent) {
Composite parentComposite = (Composite) super.createDialogArea(parent);
Composite composite = new Composite(parentComposite, SWT.NULL);
GridLayout layout = new GridLayout();
layout.numColumns = 1;
composite.setLayout(layout);
composite.setLayoutData(new GridData(GridData.FILL_BOTH));
Composite nameGroup = new Composite(composite, SWT.NULL);
nameGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
GridLayout layout1 = new GridLayout();
layout1.numColumns = 2;
layout1.marginWidth = 5;
nameGroup.setLayout(layout1);
Label onLabel = new Label(nameGroup, SWT.NONE);
onLabel.setText("Test");
onText = new Text(nameGroup, SWT.SINGLE | SWT.BORDER);
if (this.theIf != null && this.theIf.getTest() != null) {
this.onText.setText(this.theIf.getTest());
}
onText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
onText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
validateInput();
}
});
new Label(nameGroup, SWT.NONE);
ognlButton = new Button(nameGroup, SWT.CHECK);
ognlButton.setText("Parse OGNL transition criteria");
ognlButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
validateInput();
}
});
if (this.isNew) {
// Group for attribute mapper settings.
Group groupActionType = new Group(composite, SWT.NULL);
GridLayout layoutAttMap = new GridLayout();
layoutAttMap.marginWidth = 3;
layoutAttMap.marginHeight = 3;
groupActionType.setLayout(layoutAttMap);
groupActionType.setText(" Transition Tragets ");
groupActionType
.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
Composite methodComposite = new Composite(groupActionType, SWT.NONE);
methodComposite
.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
GridLayout layout3 = new GridLayout();
layout3.marginHeight = 3;
layout3.marginWidth = 5;
layout3.numColumns = 3;
methodComposite.setLayout(layout3);
Label thenLabel = new Label(methodComposite, SWT.NONE);
GridData gridData = new GridData(
GridData.HORIZONTAL_ALIGN_BEGINNING);
gridData.widthHint = LABEL_WIDTH;
thenLabel.setLayoutData(gridData);
thenLabel.setText("Then");
thenText = new Text(methodComposite, SWT.SINGLE | SWT.BORDER);
thenText.setEditable(false);
if (this.theIf != null && this.theIf.getThenTransition() != null
&& this.theIf.getThenTransition().getToState() != null) {
thenText.setText(this.theIf.getThenTransition().getToState()
.getId());
}
thenText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
thenText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
validateInput();
}
});
browseThenButton = new Button(methodComposite, SWT.PUSH);
browseThenButton.setText("...");
browseThenButton.setLayoutData(new GridData(
GridData.HORIZONTAL_ALIGN_END));
browseThenButton.addSelectionListener(buttonListener);
// Label field.
Label elseLabel = new Label(methodComposite, SWT.NONE);
gridData = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
gridData.widthHint = LABEL_WIDTH;
elseLabel.setLayoutData(gridData);
// Add the text box for action classname.
elseText = new Text(methodComposite, SWT.SINGLE | SWT.BORDER);
if (this.theIf != null && this.theIf.getElseTransition() != null
&& this.theIf.getElseTransition().getToState() != null) {
elseText.setText(this.theIf.getElseTransition().getToState()
.getId());
}
elseText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
elseText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
validateInput();
}
});
browseElseButton = new Button(methodComposite, SWT.PUSH);
browseElseButton.setText("...");
browseElseButton.setLayoutData(new GridData(
GridData.HORIZONTAL_ALIGN_END));
browseElseButton.addSelectionListener(buttonListener);
}
applyDialogFont(parentComposite);
return parentComposite;
}
/**
* Cut the expression from given criteria string and return it.
*
* @param encodedCriteria
*
* @return
*/
private String cutExpression(String encodedCriteria) {
return encodedCriteria.substring(EXPRESSION_PREFIX.length(),
encodedCriteria.length() - EXPRESSION_SUFFIX.length());
}
/**
*
*
* @return
*/
public String getMessage() {
return "Enter the details for the if criteria";
}
/**
*
*
* @return
*/
public IWebflowModelElement getModelElementParent() {
return this.parent;
}
/**
*
*
* @return
*/
protected String getShellTitle() {
return "If";
}
/**
*
*
* @return
*/
public String getTest() {
return this.onText.getText();
}
/**
*
*
* @return
*/
protected String getTitle() {
return "If properties";
}
/**
*
*
* @param button
*/
private void handleButtonPressed(Button button) {
if (button.equals(browseThenButton)) {
ElementListSelectionDialog dialog = new ElementListSelectionDialog(
getShell(), new DecoratingLabelProvider(
new WebflowModelLabelProvider(),
new WebflowModelLabelDecorator()));
dialog.setBlockOnOpen(true);
dialog.setElements(WebflowModelXmlUtils.getStates(parent, false)
.toArray());
dialog.setEmptySelectionMessage("Enter a valid state id");
dialog.setTitle("State reference");
dialog.setMessage("Please select a state reference");
dialog.setMultipleSelection(false);
if (Dialog.OK == dialog.open()) {
this.thenText.setText(((IState) dialog.getFirstResult())
.getId());
}
}
else {
ElementListSelectionDialog dialog = new ElementListSelectionDialog(
getShell(), new DecoratingLabelProvider(
new WebflowModelLabelProvider(),
new WebflowModelLabelDecorator()));
dialog.setBlockOnOpen(true);
dialog.setElements(WebflowModelXmlUtils.getStates(parent, false)
.toArray());
dialog.setEmptySelectionMessage("Enter a valid state id");
dialog.setTitle("State reference");
dialog.setMessage("Please select a state reference");
dialog.setMultipleSelection(false);
if (Dialog.OK == dialog.open()) {
this.elseText.setText(((IState) dialog.getFirstResult())
.getId());
}
}
this.validateInput();
}
/**
*
*/
protected void handleTableSelectionChanged() {
// TODO Auto-generated method stub
}
/**
*
*
* @param error
*/
protected void showError(String error) {
super.setErrorMessage(error);
}
/**
*
*
* @param string
*
* @return
*/
public String trimString(String string) {
if (string != null && string == "") {
string = null;
}
return string;
}
/**
*
*/
protected void validateInput() {
String id = this.onText.getText();
boolean error = false;
String errorMessage = null;
if (id == null || "".equals(id)) {
errorMessage = "A valid test criteria is required. ";
error = true;
}
if (this.ognlButton.getSelection()) {
if (!id.startsWith(EXPRESSION_PREFIX)
|| !id.endsWith(EXPRESSION_SUFFIX)) {
errorMessage = "A valid OGNL expression needs to start with '${' and ends with '}'. ";
error = true;
}
else {
try {
Ognl.parseExpression(this.cutExpression(id));
}
catch (OgnlException e) {
errorMessage = "Malformed OGNL expression. ";
error = true;
}
}
}
if (isNew) {
String thenTxt = this.thenText.getText();
//String elseTxt = this.elseText.getText();
if (thenTxt == null || "".equals(thenTxt)) {
errorMessage = "A valid then transition target is required. ";
error = true;
}
}
if (error) {
getButton(OK).setEnabled(false);
setErrorMessage(errorMessage);
}
else {
getButton(OK).setEnabled(true);
setErrorMessage(null);
}
}
}