/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2016 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.steps.append;
import java.util.List;
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.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.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.util.Utils;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDialogInterface;
import org.pentaho.di.trans.step.errorhandling.StreamInterface;
import org.pentaho.di.trans.steps.append.Append;
import org.pentaho.di.trans.steps.append.AppendMeta;
import org.pentaho.di.ui.trans.step.BaseStepDialog;
/**
* Dialog for the append step.
*
* @author Sven Boden
*/
public class AppendDialog extends BaseStepDialog implements StepDialogInterface {
private static Class<?> PKG = Append.class; // for i18n purposes, needed by Translator2!!
private Label wlHeadHop;
private CCombo wHeadHop;
private FormData fdlHeadHop, fdHeadHop;
private Label wlTailHop;
private CCombo wTailHop;
private FormData fdlTailHop, fdTailHop;
private AppendMeta input;
public AppendDialog( Shell parent, Object in, TransMeta tr, String sname ) {
super( parent, (BaseStepMeta) in, tr, sname );
input = (AppendMeta) in;
}
public String open() {
Shell parent = getParent();
Display display = parent.getDisplay();
shell = new Shell( parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MIN | SWT.MAX );
props.setLook( shell );
setShellImage( shell, input );
ModifyListener lsMod = new ModifyListener() {
public void modifyText( ModifyEvent e ) {
input.setChanged();
}
};
backupChanged = input.hasChanged();
FormLayout formLayout = new FormLayout();
formLayout.marginWidth = Const.FORM_MARGIN;
formLayout.marginHeight = Const.FORM_MARGIN;
shell.setLayout( formLayout );
shell.setText( BaseMessages.getString( PKG, "AppendDialog.Shell.Label" ) );
int middle = props.getMiddlePct();
int margin = Const.MARGIN;
// Stepname line
wlStepname = new Label( shell, SWT.RIGHT );
wlStepname.setText( BaseMessages.getString( PKG, "AppendDialog.Stepname.Label" ) );
props.setLook( wlStepname );
fdlStepname = new FormData();
fdlStepname.left = new FormAttachment( 0, 0 );
fdlStepname.right = new FormAttachment( middle, -margin );
fdlStepname.top = new FormAttachment( 0, margin );
wlStepname.setLayoutData( fdlStepname );
wStepname = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
wStepname.setText( stepname );
props.setLook( wStepname );
wStepname.addModifyListener( lsMod );
fdStepname = new FormData();
fdStepname.left = new FormAttachment( middle, 0 );
fdStepname.top = new FormAttachment( 0, margin );
fdStepname.right = new FormAttachment( 100, 0 );
wStepname.setLayoutData( fdStepname );
// Get the previous steps...
String[] previousSteps = transMeta.getPrevStepNames( stepname );
wlHeadHop = new Label( shell, SWT.RIGHT );
wlHeadHop.setText( BaseMessages.getString( PKG, "AppendDialog.HeadHop.Label" ) );
props.setLook( wlHeadHop );
fdlHeadHop = new FormData();
fdlHeadHop.left = new FormAttachment( 0, 0 );
fdlHeadHop.right = new FormAttachment( middle, -margin );
fdlHeadHop.top = new FormAttachment( wStepname, margin );
wlHeadHop.setLayoutData( fdlHeadHop );
wHeadHop = new CCombo( shell, SWT.BORDER );
props.setLook( wHeadHop );
if ( previousSteps != null ) {
wHeadHop.setItems( previousSteps );
}
wHeadHop.addModifyListener( lsMod );
fdHeadHop = new FormData();
fdHeadHop.left = new FormAttachment( middle, 0 );
fdHeadHop.top = new FormAttachment( wStepname, margin );
fdHeadHop.right = new FormAttachment( 100, 0 );
wHeadHop.setLayoutData( fdHeadHop );
wlTailHop = new Label( shell, SWT.RIGHT );
wlTailHop.setText( BaseMessages.getString( PKG, "AppendDialog.TailHop.Label" ) );
props.setLook( wlTailHop );
fdlTailHop = new FormData();
fdlTailHop.left = new FormAttachment( 0, 0 );
fdlTailHop.right = new FormAttachment( middle, -margin );
fdlTailHop.top = new FormAttachment( wHeadHop, margin );
wlTailHop.setLayoutData( fdlTailHop );
wTailHop = new CCombo( shell, SWT.BORDER );
props.setLook( wTailHop );
if ( previousSteps != null ) {
wTailHop.setItems( previousSteps );
}
wTailHop.addModifyListener( lsMod );
fdTailHop = new FormData();
fdTailHop.top = new FormAttachment( wHeadHop, margin );
fdTailHop.left = new FormAttachment( middle, 0 );
fdTailHop.right = new FormAttachment( 100, 0 );
wTailHop.setLayoutData( fdTailHop );
// Some buttons
wOK = new Button( shell, SWT.PUSH );
wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );
wCancel = new Button( shell, SWT.PUSH );
wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );
setButtonPositions( new Button[] { wOK, wCancel }, margin, wTailHop );
// Add listeners
lsCancel = new Listener() {
public void handleEvent( Event e ) {
cancel();
}
};
lsOK = new Listener() {
public void handleEvent( Event e ) {
ok();
}
};
wCancel.addListener( SWT.Selection, lsCancel );
wOK.addListener( SWT.Selection, lsOK );
lsDef = new SelectionAdapter() {
public void widgetDefaultSelected( SelectionEvent e ) {
ok();
}
};
wStepname.addSelectionListener( lsDef );
// Detect X or ALT-F4 or something that kills this window...
shell.addShellListener( new ShellAdapter() {
public void shellClosed( ShellEvent e ) {
cancel();
}
} );
// Set the shell size, based upon previous time...
setSize();
getData();
input.setChanged( backupChanged );
shell.open();
while ( !shell.isDisposed() ) {
if ( !display.readAndDispatch() ) {
display.sleep();
}
}
return stepname;
}
/**
* Copy information from the meta-data input to the dialog fields.
*/
public void getData() {
List<StreamInterface> infoStreams = input.getStepIOMeta().getInfoStreams();
StreamInterface headStream = infoStreams.get( 0 );
StreamInterface tailStream = infoStreams.get( 1 );
wHeadHop.setText( Const.NVL( headStream.getStepname(), "" ) );
wTailHop.setText( Const.NVL( tailStream.getStepname(), "" ) );
wStepname.selectAll();
wStepname.setFocus();
}
private void cancel() {
stepname = null;
input.setChanged( backupChanged );
dispose();
}
private void ok() {
if ( Utils.isEmpty( wStepname.getText() ) ) {
return;
}
List<StreamInterface> infoStreams = input.getStepIOMeta().getInfoStreams();
StreamInterface headStream = infoStreams.get( 0 );
StreamInterface tailStream = infoStreams.get( 1 );
headStream.setStepMeta( transMeta.findStep( wHeadHop.getText() ) );
tailStream.setStepMeta( transMeta.findStep( wTailHop.getText() ) );
stepname = wStepname.getText(); // return value
dispose();
}
}