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Scripting steps for Pentaho kettle.
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/*
* Ruby for pentaho kettle
* Copyright (C) 2017 Twineworks GmbH
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.twineworks.kettle.ruby.step;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
import org.pentaho.di.i18n.BaseMessages;
import java.util.List;
public class RubyStepRenameDialog extends Dialog {
private static Class PKG = RubyStepMeta.class; // for i18n purposes
Shell shell;
Text text;
String newName;
List namesTaken;
boolean nameOk;
public RubyStepRenameDialog(Shell parent) {
super(parent);
}
public RubyStepRenameDialog(Shell parent, int style) {
super(parent, style);
}
private void cancel() {
newName = null;
shell.dispose();
}
private void ok() {
newName = text.getText();
shell.dispose();
}
public String open(String preset, List takenNames) {
namesTaken = takenNames;
Shell parent = getParent();
shell = new Shell(parent, SWT.TITLE | SWT.BORDER | SWT.APPLICATION_MODAL);
shell.setText(BaseMessages.getString(PKG, "RubyStepDialog.RenameScript", preset));
shell.setLayout(new GridLayout(2, true));
text = new Text(shell, SWT.SINGLE | SWT.BORDER);
GridData d = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
d.horizontalSpan = 2;
text.setLayoutData(d);
final Button buttonOK = new Button(shell, SWT.PUSH);
buttonOK.setText(BaseMessages.getString(PKG, "System.Button.OK"));
buttonOK.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
Button buttonCancel = new Button(shell, SWT.PUSH);
buttonCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));
text.addListener(SWT.Modify, new Listener() {
public void handleEvent(Event event) {
nameOk = !namesTaken.contains(text.getText());
buttonOK.setEnabled(nameOk);
}
});
SelectionAdapter lsDef = new SelectionAdapter() {
public void widgetDefaultSelected(SelectionEvent e) {
if (nameOk) {
ok();
}
}
};
text.addSelectionListener(lsDef);
buttonOK.addSelectionListener(lsDef);
buttonCancel.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
cancel();
}
});
buttonOK.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
if (nameOk) {
ok();
}
}
});
shell.addListener(SWT.Traverse, new Listener() {
public void handleEvent(Event event) {
if (event.detail == SWT.TRAVERSE_ESCAPE) {
cancel();
}
}
});
// initially the name is fine
nameOk = true;
text.setText(preset);
shell.setDefaultButton(buttonOK);
Point size = shell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
if (size.x < 220) {
size.x = 220;
}
shell.pack();
shell.layout();
Point cursorPos = shell.getDisplay().getCursorLocation();
cursorPos.x -= text.getLocation().x;
cursorPos.y -= text.getLocation().y;
shell.setLocation(cursorPos);
shell.open();
Display display = parent.getDisplay();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
return newName;
}
}