/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* 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.
*
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package org.pentaho.di.ui.trans.dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
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.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.pentaho.di.core.Const;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.TransHopMeta;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.ui.core.PropsUI;
import org.pentaho.di.ui.core.gui.GUIResource;
import org.pentaho.di.ui.core.gui.WindowProperty;
import org.pentaho.di.ui.trans.step.BaseStepDialog;
public class TransHopDialog extends Dialog {
private static Class<?> PKG = TransDialog.class; // for i18n purposes, needed by Translator2!!
private Label wlFrom;
private CCombo wFrom;
private FormData fdlFrom, fdFrom;
private Label wlTo;
private Button wFlip;
private CCombo wTo;
private FormData fdlTo, fdFlip, fdTo;
private Label wlEnabled;
private Button wEnabled;
private FormData fdlEnabled, fdEnabled;
private Button wOK, wCancel;
private FormData fdOK, fdCancel;
private Listener lsOK, lsCancel, lsFlip;
private TransHopMeta input;
private Shell shell;
private TransMeta transMeta;
private PropsUI props;
private ModifyListener lsMod;
private boolean changed;
public TransHopDialog( Shell parent, int style, TransHopMeta transHopMeta, TransMeta tr ) {
super( parent, style );
this.props = PropsUI.getInstance();
input = transHopMeta;
transMeta = tr;
}
public Object open() {
Shell parent = getParent();
Display display = parent.getDisplay();
shell = new Shell( parent, SWT.DIALOG_TRIM | SWT.RESIZE );
props.setLook( shell );
shell.setImage( GUIResource.getInstance().getImageHop() );
lsMod = new ModifyListener() {
public void modifyText( ModifyEvent e ) {
input.setChanged();
}
};
changed = input.hasChanged();
FormLayout formLayout = new FormLayout();
formLayout.marginWidth = Const.FORM_MARGIN;
formLayout.marginHeight = Const.FORM_MARGIN;
shell.setLayout( formLayout );
shell.setText( BaseMessages.getString( PKG, "TransHopDialog.Shell.Label" ) );
int middle = props.getMiddlePct();
int margin = Const.MARGIN;
int width = 0;
// From step line
wlFrom = new Label( shell, SWT.RIGHT );
wlFrom.setText( BaseMessages.getString( PKG, "TransHopDialog.FromStep.Label" ) );
props.setLook( wlFrom );
fdlFrom = new FormData();
fdlFrom.left = new FormAttachment( 0, 0 );
fdlFrom.right = new FormAttachment( middle, -margin );
fdlFrom.top = new FormAttachment( 0, margin );
wlFrom.setLayoutData( fdlFrom );
wFrom = new CCombo( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
wFrom.setText( BaseMessages.getString( PKG, "TransHopDialog.FromStepDropdownList.Label" ) );
props.setLook( wFrom );
for ( int i = 0; i < transMeta.nrSteps(); i++ ) {
StepMeta stepMeta = transMeta.getStep( i );
wFrom.add( stepMeta.getName() );
}
wFrom.addModifyListener( lsMod );
fdFrom = new FormData();
fdFrom.left = new FormAttachment( middle, 0 );
fdFrom.top = new FormAttachment( 0, margin );
fdFrom.right = new FormAttachment( 100, 0 );
wFrom.setLayoutData( fdFrom );
// To line
wlTo = new Label( shell, SWT.RIGHT );
wlTo.setText( BaseMessages.getString( PKG, "TransHopDialog.TargetStep.Label" ) );
props.setLook( wlTo );
fdlTo = new FormData();
fdlTo.left = new FormAttachment( 0, 0 );
fdlTo.right = new FormAttachment( middle, -margin );
fdlTo.top = new FormAttachment( wFrom, margin );
wlTo.setLayoutData( fdlTo );
wTo = new CCombo( shell, SWT.BORDER | SWT.READ_ONLY );
wTo.setText( BaseMessages.getString( PKG, "TransHopDialog.TargetStepDropdownList.Label" ) );
props.setLook( wTo );
for ( int i = 0; i < transMeta.nrSteps(); i++ ) {
StepMeta stepMeta = transMeta.getStep( i );
wTo.add( stepMeta.getName() );
}
wTo.addModifyListener( lsMod );
fdTo = new FormData();
fdTo.left = new FormAttachment( middle, 0 );
fdTo.top = new FormAttachment( wFrom, margin );
fdTo.right = new FormAttachment( 100, 0 );
wTo.setLayoutData( fdTo );
// Enabled?
wlEnabled = new Label( shell, SWT.RIGHT );
wlEnabled.setText( BaseMessages.getString( PKG, "TransHopDialog.EnableHop.Label" ) );
props.setLook( wlEnabled );
fdlEnabled = new FormData();
fdlEnabled.left = new FormAttachment( 0, 0 );
fdlEnabled.right = new FormAttachment( middle, -margin );
fdlEnabled.top = new FormAttachment( wlTo, margin * 5 );
wlEnabled.setLayoutData( fdlEnabled );
wEnabled = new Button( shell, SWT.CHECK );
props.setLook( wEnabled );
fdEnabled = new FormData();
fdEnabled.left = new FormAttachment( middle, 0 );
fdEnabled.top = new FormAttachment( wlTo, margin * 5 );
wEnabled.setLayoutData( fdEnabled );
wEnabled.addSelectionListener( new SelectionAdapter() {
public void widgetSelected( SelectionEvent e ) {
input.setEnabled( !input.isEnabled() );
input.setChanged();
}
} );
wFlip = new Button( shell, SWT.PUSH );
wFlip.setText( BaseMessages.getString( PKG, "TransHopDialog.FromTo.Button" ) );
fdFlip = new FormData();
fdFlip.right = new FormAttachment( 100, 0 );
fdFlip.top = new FormAttachment( wlTo, 20 );
wFlip.setLayoutData( fdFlip );
// Some buttons
wOK = new Button( shell, SWT.PUSH );
wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );
wOK.pack( true );
Rectangle rOK = wOK.getBounds();
wCancel = new Button( shell, SWT.PUSH );
wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );
wCancel.pack( true );
Rectangle rCancel = wCancel.getBounds();
width = ( rOK.width > rCancel.width ? rOK.width : rCancel.width );
width += margin;
fdOK = new FormData();
fdOK.top = new FormAttachment( wFlip, margin * 5 );
fdOK.left = new FormAttachment( 50, -width );
fdOK.right = new FormAttachment( 50, -( margin / 2 ) );
// fdOK.bottom = new FormAttachment(100, 0);
wOK.setLayoutData( fdOK );
fdCancel = new FormData();
fdCancel.top = new FormAttachment( wFlip, margin * 5 );
fdCancel.left = new FormAttachment( 50, margin / 2 );
fdCancel.right = new FormAttachment( 50, width );
// fdCancel.bottom = new FormAttachment(100, 0);
wCancel.setLayoutData( fdCancel );
// Add listeners
lsCancel = new Listener() {
public void handleEvent( Event e ) {
cancel();
}
};
lsOK = new Listener() {
public void handleEvent( Event e ) {
ok();
}
};
lsFlip = new Listener() {
public void handleEvent( Event e ) {
flip();
}
};
wOK.addListener( SWT.Selection, lsOK );
wCancel.addListener( SWT.Selection, lsCancel );
wFlip.addListener( SWT.Selection, lsFlip );
// Detect [X] or ALT-F4 or something that kills this window...
shell.addShellListener( new ShellAdapter() {
public void shellClosed( ShellEvent e ) {
cancel();
}
} );
getData();
BaseStepDialog.setSize( shell );
input.setChanged( changed );
shell.open();
while ( !shell.isDisposed() ) {
if ( !display.readAndDispatch() ) {
display.sleep();
}
}
return input;
}
public void dispose() {
props.setScreen( new WindowProperty( shell ) );
shell.dispose();
}
/**
* Copy information from the meta-data input to the dialog fields.
*/
public void getData() {
if ( input.getFromStep() != null ) {
wFrom.setText( input.getFromStep().getName() );
}
if ( input.getToStep() != null ) {
wTo.setText( input.getToStep().getName() );
}
wEnabled.setSelection( input.isEnabled() );
}
private void cancel() {
input.setChanged( changed );
input = null;
dispose();
}
private void ok() {
StepMeta fromBackup = input.getFromStep();
StepMeta toBackup = input.getToStep();
input.setFromStep( transMeta.findStep( wFrom.getText() ) );
input.setToStep( transMeta.findStep( wTo.getText() ) );
if ( transMeta.hasLoop( input.getFromStep() ) ) {
input.setFromStep( fromBackup );
input.setToStep( toBackup );
MessageBox mb = new MessageBox( shell, SWT.OK | SWT.ICON_ERROR );
mb.setMessage( BaseMessages.getString( PKG, "TransHopDialog.LoopsNotAllowed.DialogMessage" ) );
mb.setText( BaseMessages.getString( PKG, "TransHopDialog.LoopsNotAllowed.DialogTitle" ) );
mb.open();
} else {
if ( input.getFromStep() == null ) {
MessageBox mb = new MessageBox( shell, SWT.YES | SWT.ICON_WARNING );
mb.setMessage( BaseMessages.getString( PKG, "TransHopDialog.StepDoesNotExist.DialogMessage", wFrom
.getText() ) );
mb.setText( BaseMessages.getString( PKG, "TransHopDialog.StepDoesNotExist.DialogTitle" ) );
mb.open();
} else {
if ( input.getToStep() == null ) {
MessageBox mb = new MessageBox( shell, SWT.YES | SWT.ICON_WARNING );
mb.setMessage( BaseMessages.getString( PKG, "TransHopDialog.StepDoesNotExist.DialogMessage", wTo
.getText() ) );
mb.setText( BaseMessages.getString( PKG, "TransHopDialog.StepDoesNotExist.DialogTitle" ) );
mb.open();
} else {
if ( input.getFromStep().equals( input.getToStep() ) ) {
MessageBox mb = new MessageBox( shell, SWT.YES | SWT.ICON_WARNING );
mb.setMessage( BaseMessages.getString( PKG, "TransHopDialog.CannotGoToSameStep.DialogMessage" ) );
mb.setText( BaseMessages.getString( PKG, "TransHopDialog.CannotGoToSameStep.DialogTitle" ) );
mb.open();
} else {
dispose();
}
}
}
}
}
private void flip() {
String dummy;
dummy = wFrom.getText();
wFrom.setText( wTo.getText() );
wTo.setText( dummy );
input.setChanged();
}
}