/*! ******************************************************************************
*
* 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.
*
******************************************************************************/
package org.pentaho.di.ui.core.dialog;
import java.util.ArrayList;
import java.util.List;
import com.google.common.annotations.VisibleForTesting;
import org.eclipse.swt.SWT;
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.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.exception.KettleValueException;
import org.pentaho.di.core.logging.LogChannel;
import org.pentaho.di.core.logging.LogChannelInterface;
import org.pentaho.di.core.row.RowDataUtil;
import org.pentaho.di.core.row.RowMeta;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.core.row.value.ValueMetaFactory;
import org.pentaho.di.core.variables.Variables;
import org.pentaho.di.i18n.BaseMessages;
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.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.trans.step.BaseStepDialog;
/**
* Allows the user to edit a list of rows in a TableView.
*
* @author Matt
* @since 19-03-2014
*/
public class EditRowsDialog {
private static Class<?> PKG = EditRowsDialog.class; // for i18n purposes, needed by Translator2!!
public static final int MAX_BINARY_STRING_PREVIEW_SIZE = 1000000;
private Label wlMessage;
private TableView wFields;
private FormData fdlFields, fdFields;
private Button wOK;
private Button wCancel;
private Shell shell;
private List<Object[]> rowBuffer;
private PropsUI props;
private String title, message;
private Rectangle bounds;
private int hscroll, vscroll;
private int hmax, vmax;
private RowMetaInterface rowMeta;
private LogChannelInterface log;
protected int lineNr;
private int style = SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN;
private Shell parentShell;
private List<Object[]> outputList;
private RowMetaInterface stringRowMeta;
public EditRowsDialog( Shell parent, int style,
String title, String message, RowMetaInterface rowMeta, List<Object[]> rowBuffer ) {
this.title = title;
this.message = message;
this.rowBuffer = rowBuffer;
this.rowMeta = rowMeta;
this.parentShell = parent;
this.style = ( style != SWT.None ) ? style : this.style;
props = PropsUI.getInstance();
bounds = null;
hscroll = -1;
vscroll = -1;
title = null;
message = null;
this.log = LogChannel.GENERAL;
}
public void setTitleMessage( String title, String message ) {
this.title = title;
this.message = message;
}
public List<Object[]> open() {
shell = new Shell( parentShell, style );
props.setLook( shell );
shell.setImage( GUIResource.getInstance().getImageSpoon() );
FormLayout formLayout = new FormLayout();
formLayout.marginWidth = Const.FORM_MARGIN;
formLayout.marginHeight = Const.FORM_MARGIN;
shell.setLayout( formLayout );
shell.setText( title );
wOK = new Button( shell, SWT.PUSH );
wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );
wOK.addListener( SWT.Selection, new Listener() {
public void handleEvent( Event e ) {
ok();
}
} );
wCancel = new Button( shell, SWT.PUSH );
wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );
wCancel.addListener( SWT.Selection, new Listener() {
public void handleEvent( Event e ) {
cancel();
}
} );
// Position the buttons...
//
BaseStepDialog.positionBottomButtons( shell, new Button[] { wOK, wCancel, }, Const.MARGIN, null );
if ( addFields() ) {
return null;
}
// 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 );
shell.open();
while ( !shell.isDisposed() ) {
if ( !shell.getDisplay().readAndDispatch() ) {
shell.getDisplay().sleep();
}
}
return outputList;
}
private boolean addFields() {
// int middle = props.getMiddlePct();
int margin = Const.MARGIN;
if ( wlMessage == null ) {
wlMessage = new Label( shell, SWT.LEFT );
wlMessage.setText( message );
props.setLook( wlMessage );
fdlFields = new FormData();
fdlFields.left = new FormAttachment( 0, 0 );
fdlFields.right = new FormAttachment( 100, 0 );
fdlFields.top = new FormAttachment( 0, margin );
wlMessage.setLayoutData( fdlFields );
} else {
wFields.dispose();
}
// Mmm, if we don't get any row metadata: show a dialog box.
if ( rowMeta == null || rowMeta.size() == 0 ) {
ShowMessageDialog dialog = new ShowMessageDialog( shell, SWT.OK | SWT.ICON_WARNING,
BaseMessages.getString( PKG, "EditRowsDialog.NoRowMeta.Text" ),
BaseMessages.getString( PKG, "EditRowsDialog.NoRowMeta.Message" ) );
dialog.open();
shell.dispose();
return true;
}
// ColumnInfo[] colinf = new ColumnInfo[rowMeta==null ? 0 : rowMeta.size()];
ColumnInfo[] colinf = new ColumnInfo[rowMeta.size()];
for ( int i = 0; i < rowMeta.size(); i++ ) {
ValueMetaInterface v = rowMeta.getValueMeta( i );
colinf[i] = new ColumnInfo( v.getName(), ColumnInfo.COLUMN_TYPE_TEXT, v.isNumeric() );
colinf[i].setToolTip( v.toStringMeta() );
colinf[i].setValueMeta( v );
}
wFields = new TableView(
new Variables(),
shell,
SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI,
colinf,
rowBuffer.size(),
null,
props );
wFields.setShowingBlueNullValues( true );
fdFields = new FormData();
fdFields.left = new FormAttachment( 0, 0 );
fdFields.top = new FormAttachment( wlMessage, margin );
fdFields.right = new FormAttachment( 100, 0 );
fdFields.bottom = new FormAttachment( 100, -50 );
wFields.setLayoutData( fdFields );
shell.layout( true, true );
return false;
}
public void dispose() {
props.setScreen( new WindowProperty( shell ) );
bounds = shell.getBounds();
hscroll = wFields.getHorizontalBar().getSelection();
vscroll = wFields.getVerticalBar().getSelection();
shell.dispose();
}
/**
* Copy information from the meta-data input to the dialog fields.
*/
private void getData() {
shell.getDisplay().asyncExec( new Runnable() {
public void run() {
lineNr = 0;
for ( int i = 0; i < rowBuffer.size(); i++ ) {
TableItem item = wFields.table.getItem( i );
Object[] row = rowBuffer.get( i );
getDataForRow( item, row );
}
wFields.optWidth( true, 200 );
}
} );
}
protected int getDataForRow( TableItem item, Object[] row ) {
int nrErrors = 0;
// Display the correct line item...
//
String strNr;
lineNr++;
try {
strNr = wFields.getNumberColumn().getValueMeta().getString( new Long( lineNr ) );
} catch ( Exception e ) {
strNr = Integer.toString( lineNr );
}
item.setText( 0, strNr );
for ( int c = 0; c < rowMeta.size(); c++ ) {
ValueMetaInterface v = rowMeta.getValueMeta( c );
String show;
try {
show = v.getString( row[c] );
if ( v.isBinary() && show != null && show.length() > MAX_BINARY_STRING_PREVIEW_SIZE ) {
// We want to limit the size of the strings during preview to keep all SWT widgets happy.
//
show = show.substring( 0, MAX_BINARY_STRING_PREVIEW_SIZE );
}
} catch ( KettleValueException e ) {
nrErrors++;
if ( nrErrors < 25 ) {
log.logError( Const.getStackTracker( e ) );
}
show = null;
} catch ( ArrayIndexOutOfBoundsException e ) {
nrErrors++;
if ( nrErrors < 25 ) {
log.logError( Const.getStackTracker( e ) );
}
show = null;
}
if ( show != null ) {
item.setText( c + 1, show );
item.setForeground( c + 1, GUIResource.getInstance().getColorBlack() );
} else {
// Set null value
item.setText( c + 1, "<null>" );
item.setForeground( c + 1, GUIResource.getInstance().getColorBlue() );
}
}
return nrErrors;
}
@VisibleForTesting
Object[] getRowForData( TableItem item, int rowNr ) throws KettleException {
try {
Object[] row = RowDataUtil.allocateRowData( rowMeta.size() );
for ( int i = 0; i < rowMeta.size(); i++ ) {
ValueMetaInterface valueMeta = rowMeta.getValueMeta( i );
ValueMetaInterface stringValueMeta = stringRowMeta.getValueMeta( i );
int colnr = i + 1;
if ( isDisplayingNullValue( item, colnr ) ) {
row[i] = null; // <null> value
} else {
String string = item.getText( colnr );
if ( stringValueMeta.isNull( string ) ) {
string = null;
}
row[i] = valueMeta.convertDataFromString( string, stringValueMeta,
null, null, ValueMetaInterface.TRIM_TYPE_NONE );
}
}
return row;
} catch ( KettleException e ) {
throw new KettleException( BaseMessages.getString( PKG, "EditRowsDialog.Error.ErrorGettingRowForData",
Integer.toString( rowNr ) ), e );
}
}
@VisibleForTesting
boolean isDisplayingNullValue( TableItem item, int column ) throws KettleException {
return GUIResource.getInstance().getColorBlue().equals( item.getForeground( column ) );
}
private void ok() {
try {
stringRowMeta = new RowMeta();
for ( ValueMetaInterface valueMeta : rowMeta.getValueMetaList() ) {
ValueMetaInterface stringValueMeta = ValueMetaFactory.cloneValueMeta( valueMeta,
ValueMetaInterface.TYPE_STRING );
stringRowMeta.addValueMeta( stringValueMeta );
}
List<Object[]> list = new ArrayList<Object[]>();
// Now read all the rows in the dialog, including the empty rows...
//
for ( int i = 0; i < wFields.getItemCount(); i++ ) {
TableItem item = wFields.getTable().getItem( i );
Object[] row = getRowForData( item, i + 1 );
list.add( row );
}
outputList = list;
dispose();
} catch ( Exception e ) {
new ErrorDialog( shell, "Error", BaseMessages.getString( PKG, "EditRowsDialog.ErrorConvertingData" ), e );
}
}
private void cancel() {
outputList = null;
dispose();
}
public Rectangle getBounds() {
return bounds;
}
public void setBounds( Rectangle b ) {
bounds = b;
}
public int getHScroll() {
return hscroll;
}
public void setHScroll( int s ) {
hscroll = s;
}
public int getVScroll() {
return vscroll;
}
public void setVScroll( int s ) {
vscroll = s;
}
public int getHMax() {
return hmax;
}
public void setHMax( int m ) {
hmax = m;
}
public int getVMax() {
return vmax;
}
public void setVMax( int m ) {
vmax = m;
}
@VisibleForTesting
void setRowMeta( RowMetaInterface rowMeta ) {
this.rowMeta = rowMeta;
}
@VisibleForTesting
void setStringRowMeta( RowMetaInterface stringRowMeta ) {
this.stringRowMeta = stringRowMeta;
}
}