/*
* Copyright 2005 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.flow.ruleflow.view.property.workitem;
import java.util.HashMap;
import java.util.Map;
import org.drools.eclipse.flow.common.view.property.EditBeanDialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TableEditor;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
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.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.jbpm.workflow.core.node.WorkItemNode;
/**
* Dialog for editing work item result mappings.
*/
public class WorkItemResultMappingDialog extends EditBeanDialog<Map<String, String>> implements FocusListener, MouseListener {
private Table table;
private Button removeButton;
private Text text;
private TableEditor editor;
private int selectedColumn = -1;
public WorkItemResultMappingDialog(Shell parentShell, WorkItemNode workItemNode) {
super(parentShell, "Result Mapping");
setValue(workItemNode.getOutMappings());
}
protected Map<String, String> updateValue(Map<String, String> value) {
Map<String, String> mapping = new HashMap<String, String>();
for (TableItem item: table.getItems()) {
mapping.put(item.getText(1), item.getText(0));
}
return mapping;
}
protected Point getInitialSize() {
return new Point(450, 300);
}
public Control createDialogArea(Composite parent) {
Composite composite = (Composite) super.createDialogArea(parent);
GridLayout layout = new GridLayout();
layout.numColumns = 2;
composite.setLayout(layout);
table = new Table(composite, SWT.SINGLE);
GridData gd = new GridData();
gd.verticalSpan = 3;
gd.grabExcessHorizontalSpace = true;
gd.grabExcessVerticalSpace = true;
gd.verticalAlignment = GridData.FILL;
gd.horizontalAlignment = GridData.FILL;
table.setLayoutData(gd);
table.addSelectionListener(new SelectionListener() {
public void widgetDefaultSelected(SelectionEvent e) {
removeButton.setEnabled(table.getSelectionIndex() != -1);
}
public void widgetSelected(SelectionEvent e) {
removeButton.setEnabled(table.getSelectionIndex() != -1);
}
});
table.addMouseListener(this);
table.setHeaderVisible(true);
table.setLinesVisible(true);
TableColumn variableNameColumn = new TableColumn(table, SWT.LEFT);
variableNameColumn.setText("Variable");
variableNameColumn.setWidth(150);
TableColumn parameterNameColumn = new TableColumn(table, SWT.LEFT);
parameterNameColumn.setText("Result Parameter");
parameterNameColumn.setWidth(225);
editor = new TableEditor(table);
text = new Text(table, SWT.NORMAL);
text.setVisible(false);
text.setText("");
editor.minimumWidth = text.getSize().x;
editor.horizontalAlignment = SWT.LEFT;
editor.grabHorizontal = true;
Button addButton = new Button(composite, SWT.PUSH);
addButton.setText("Add");
addButton.setFont(JFaceResources.getDialogFont());
addButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
addButtonPressed();
}
});
gd = new GridData();
gd.horizontalAlignment = SWT.FILL;
addButton.setLayoutData(gd);
removeButton = new Button(composite, SWT.PUSH);
removeButton.setText("Remove");
removeButton.setFont(JFaceResources.getDialogFont());
removeButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
removeButtonPressed();
}
});
gd = new GridData();
removeButton.setLayoutData(gd);
removeButton.setEnabled(false);
updateTable();
return composite;
}
private void updateTable() {
Map<String, String> mapping = (Map<String, String>) getValue();
for (Map.Entry<String, String> entry: mapping.entrySet()) {
TableItem item = new TableItem(table, SWT.NONE);
item.setText(new String[] { entry.getValue(), entry.getKey()} );
}
}
private void addButtonPressed() {
TableItem item = new TableItem(table, SWT.NONE);
item.setText(0, "variable");
item.setText(1, "result parameter");
table.setSelection(item);
}
private void removeButtonPressed() {
int i = table.getSelectionIndex();
if (i == -1) {
return;
}
table.remove(i);
removeButton.setEnabled(table.getItemCount() == 0);
}
private void doEdit() {
if (text.isVisible()) {
endEdit();
}
if (table.getSelectionIndex() == -1 || selectedColumn == -1) return;
TableItem selection = table.getItem(table.getSelectionIndex());
String value = selection.getText(selectedColumn);
text.setText(value == null ? "" : value);
editor.setEditor(text, selection, selectedColumn);
text.setVisible(true);
text.selectAll();
text.setFocus();
text.addFocusListener(this);
}
private void endEdit() {
text.setVisible(false);
text.setText("");
text.removeFocusListener(this);
}
public void focusGained(FocusEvent e) {
}
public void focusLost(FocusEvent e) {
if (e.widget == text) {
applyValue();
endEdit();
}
}
public void mouseDoubleClick(MouseEvent e) {
}
public void mouseDown(MouseEvent e) {
selectedColumn = getSelectedColumn(e.x, e.y);
if (selectedColumn == -1) return;
doEdit();
}
public void mouseUp(MouseEvent e) {
}
private int getSelectedColumn(int x, int y) {
int columnToEdit = -1;
int columns = table.getColumnCount();
if (table.getSelection().length == 0) {
return -1;
}
for (int i = 0; i < columns; i++) {
Rectangle bounds = table.getSelection()[0].getBounds(i);
if (bounds.contains(x, y)) {
columnToEdit = i;
break;
}
}
return columnToEdit;
}
private void applyValue() {
int i = table.getSelectionIndex();
if (i == -1) {
return;
}
TableItem item = table.getItem(i);
item.setText(selectedColumn, text.getText());
}
}