Examples with BaseTransformDialog org.apache.hop.ui.pipeline.transform.BaseTransformDialog used on opensource projects

Example 1 with BaseTransformDialog

use of org.apache.hop.ui.pipeline.transform.BaseTransformDialog in project hop by apache.

the class MongoDbOutputDialog method open.

@Override
public String open() {
    Shell parent = getParent();
    shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MIN | SWT.MAX);
    props.setLook(shell);
    setShellImage(shell, currentMeta);
    // used to listen to a text field (wTransformName)
    ModifyListener lsMod = e -> currentMeta.setChanged();
    changed = currentMeta.hasChanged();
    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;
    shell.setLayout(formLayout);
    shell.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Shell.Title"));
    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;
    // Buttons inherited from BaseTransformDialog
    wOk = new Button(shell, SWT.PUSH);
    // 
    wOk.setText(BaseMessages.getString(PKG, "System.Button.OK"));
    wOk.addListener(SWT.Selection, e -> ok());
    wCancel = new Button(shell, SWT.PUSH);
    // 
    wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));
    wCancel.addListener(SWT.Selection, e -> cancel());
    setButtonPositions(new Button[] { wOk, wCancel }, margin, null);
    // TransformName line
    wlTransformName = new Label(shell, SWT.RIGHT);
    wlTransformName.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.TransformName.Label"));
    props.setLook(wlTransformName);
    FormData fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.right = new FormAttachment(middle, -margin);
    fd.top = new FormAttachment(0, margin);
    wlTransformName.setLayoutData(fd);
    wTransformName = new Text(shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    wTransformName.setText(transformName);
    props.setLook(wTransformName);
    wTransformName.addModifyListener(lsMod);
    // format the text field
    fd = new FormData();
    fd.left = new FormAttachment(middle, 0);
    fd.top = new FormAttachment(0, margin);
    fd.right = new FormAttachment(100, 0);
    wTransformName.setLayoutData(fd);
    /**
     * various UI bits and pieces for the dialog
     */
    // The tabs of the dialog
    CTabFolder wTabFolder = new CTabFolder(shell, SWT.BORDER);
    props.setLook(wTabFolder, Props.WIDGET_STYLE_TAB);
    // --- start of the options tab
    CTabItem wOutputOptionsTab = new CTabItem(wTabFolder, SWT.NONE);
    wOutputOptionsTab.setText("Output options");
    Composite wOutputComp = new Composite(wTabFolder, SWT.NONE);
    props.setLook(wOutputComp);
    FormLayout outputLayout = new FormLayout();
    outputLayout.marginWidth = 3;
    outputLayout.marginHeight = 3;
    wOutputComp.setLayout(outputLayout);
    // The connection to use...
    // 
    wConnection = new MetaSelectionLine<>(variables, metadataProvider, MongoDbConnection.class, wOutputComp, SWT.NONE, BaseMessages.getString(PKG, "MongoDbOutputDialog.ConnectionName.Label"), BaseMessages.getString(PKG, "MongoDbOutputDialog.ConnectionName.Tooltip"));
    FormData fdConnection = new FormData();
    fdConnection.left = new FormAttachment(0, 0);
    fdConnection.right = new FormAttachment(100, 0);
    fdConnection.top = new FormAttachment(0, 0);
    wConnection.setLayoutData(fdConnection);
    Control lastControl = wConnection;
    try {
        wConnection.fillItems();
    } catch (HopException e) {
        new ErrorDialog(shell, "Error", "Error loading list of MongoDB connection names", e);
    }
    // collection line
    Label collectionLab = new Label(wOutputComp, SWT.RIGHT);
    collectionLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Collection.Label"));
    collectionLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Collection.TipText"));
    props.setLook(collectionLab);
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, margin);
    fd.right = new FormAttachment(middle, -margin);
    collectionLab.setLayoutData(fd);
    Button wbGetCollections = new Button(wOutputComp, SWT.PUSH | SWT.CENTER);
    props.setLook(wbGetCollections);
    wbGetCollections.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.GetCollections.Button"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(collectionLab, 0, SWT.CENTER);
    wbGetCollections.setLayoutData(fd);
    wbGetCollections.addListener(SWT.Selection, e -> getCollectionNames(false));
    wCollectionField = new CCombo(wOutputComp, SWT.BORDER);
    props.setLook(wCollectionField);
    wCollectionField.addModifyListener(e -> {
        currentMeta.setChanged();
        wCollectionField.setToolTipText(variables.resolve(wCollectionField.getText()));
    });
    fd = new FormData();
    fd.left = new FormAttachment(middle, 0);
    fd.top = new FormAttachment(collectionLab, 0, SWT.CENTER);
    fd.right = new FormAttachment(wbGetCollections, -margin);
    wCollectionField.setLayoutData(fd);
    lastControl = wbGetCollections;
    // batch insert line
    Label batchLab = new Label(wOutputComp, SWT.RIGHT);
    batchLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.BatchInsertSize.Label"));
    props.setLook(batchLab);
    batchLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.BatchInsertSize.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, margin);
    fd.right = new FormAttachment(middle, -margin);
    batchLab.setLayoutData(fd);
    wBatchInsertSizeField = new TextVar(variables, wOutputComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wBatchInsertSizeField);
    wBatchInsertSizeField.addModifyListener(lsMod);
    // set the tool tip to the contents with any env variables expanded
    wBatchInsertSizeField.addModifyListener(e -> wBatchInsertSizeField.setToolTipText(variables.resolve(wBatchInsertSizeField.getText())));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(batchLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wBatchInsertSizeField.setLayoutData(fd);
    lastControl = wBatchInsertSizeField;
    // truncate line
    Label truncateLab = new Label(wOutputComp, SWT.RIGHT);
    truncateLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Truncate.Label"));
    props.setLook(truncateLab);
    truncateLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Truncate.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, 2 * margin);
    fd.right = new FormAttachment(middle, -margin);
    truncateLab.setLayoutData(fd);
    wbTruncate = new Button(wOutputComp, SWT.CHECK);
    props.setLook(wbTruncate);
    wbTruncate.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Truncate.TipText"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(truncateLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wbTruncate.setLayoutData(fd);
    wbTruncate.addListener(SWT.Selection, e -> currentMeta.setChanged());
    lastControl = truncateLab;
    // update line
    Label updateLab = new Label(wOutputComp, SWT.RIGHT);
    updateLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Update.Label"));
    props.setLook(updateLab);
    updateLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Update.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, 2 * margin);
    fd.right = new FormAttachment(middle, -margin);
    updateLab.setLayoutData(fd);
    wbUpdate = new Button(wOutputComp, SWT.CHECK);
    props.setLook(wbUpdate);
    wbUpdate.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Update.TipText"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(updateLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wbUpdate.setLayoutData(fd);
    lastControl = updateLab;
    // multi update can only be used when the update document
    // contains modifier operations:
    // http://docs.mongodb.org/manual/reference/method/db.collection.update/#multi-parameter
    wbUpdate.addListener(SWT.Selection, e -> {
        currentMeta.setChanged();
        wbUpsert.setEnabled(wbUpdate.getSelection());
        wbModifierUpdate.setEnabled(wbUpdate.getSelection());
        wbMulti.setEnabled(wbUpdate.getSelection());
        if (!wbUpdate.getSelection()) {
            wbModifierUpdate.setSelection(false);
            wbMulti.setSelection(false);
            wbUpsert.setSelection(false);
        }
        wbMulti.setEnabled(wbModifierUpdate.getSelection());
        if (!wbMulti.getEnabled()) {
            wbMulti.setSelection(false);
        }
    });
    // upsert line
    Label upsertLab = new Label(wOutputComp, SWT.RIGHT);
    upsertLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Upsert.Label"));
    props.setLook(upsertLab);
    upsertLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Upsert.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, 2 * margin);
    fd.right = new FormAttachment(middle, -margin);
    upsertLab.setLayoutData(fd);
    wbUpsert = new Button(wOutputComp, SWT.CHECK);
    props.setLook(wbUpsert);
    wbUpsert.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Upsert.TipText"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(upsertLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wbUpsert.setLayoutData(fd);
    lastControl = upsertLab;
    // multi line
    Label multiLab = new Label(wOutputComp, SWT.RIGHT);
    multiLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Multi.Label"));
    props.setLook(multiLab);
    multiLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Multi.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, 2 * margin);
    fd.right = new FormAttachment(middle, -margin);
    multiLab.setLayoutData(fd);
    wbMulti = new Button(wOutputComp, SWT.CHECK);
    props.setLook(wbMulti);
    wbMulti.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Multi.TipText"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(multiLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wbMulti.setLayoutData(fd);
    wbMulti.addListener(SWT.Selection, e -> currentMeta.setChanged());
    lastControl = multiLab;
    // modifier update
    Label modifierLab = new Label(wOutputComp, SWT.RIGHT);
    modifierLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Modifier.Label"));
    props.setLook(modifierLab);
    modifierLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Modifier.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(lastControl, 2 * margin);
    fd.right = new FormAttachment(middle, -margin);
    modifierLab.setLayoutData(fd);
    wbModifierUpdate = new Button(wOutputComp, SWT.CHECK);
    props.setLook(wbModifierUpdate);
    wbModifierUpdate.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.Modifier.TipText"));
    fd = new FormData();
    fd.right = new FormAttachment(100, 0);
    fd.top = new FormAttachment(modifierLab, 0, SWT.CENTER);
    fd.left = new FormAttachment(middle, 0);
    wbModifierUpdate.setLayoutData(fd);
    wbModifierUpdate.addListener(SWT.Selection, e -> {
        currentMeta.setChanged();
        wbMulti.setEnabled(wbModifierUpdate.getSelection());
        if (!wbModifierUpdate.getSelection()) {
            wbMulti.setSelection(false);
        }
    });
    lastControl = modifierLab;
    // retries stuff
    Label retriesLab = new Label(wOutputComp, SWT.RIGHT);
    props.setLook(retriesLab);
    retriesLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.WriteRetries.Label"));
    retriesLab.setToolTipText(BaseMessages.getString(PKG, "MongoDbOutputDialog.WriteRetries.TipText"));
    fd = new FormData();
    fd.left = new FormAttachment(0, -margin);
    fd.top = new FormAttachment(lastControl, margin);
    fd.right = new FormAttachment(middle, -margin);
    retriesLab.setLayoutData(fd);
    wWriteRetries = new TextVar(variables, wOutputComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wWriteRetries);
    fd = new FormData();
    fd.left = new FormAttachment(middle, 0);
    fd.top = new FormAttachment(retriesLab, 0, SWT.CENTER);
    fd.right = new FormAttachment(100, 0);
    wWriteRetries.setLayoutData(fd);
    wWriteRetries.addModifyListener(e -> wWriteRetries.setToolTipText(variables.resolve(wWriteRetries.getText())));
    Label retriesDelayLab = new Label(wOutputComp, SWT.RIGHT);
    props.setLook(retriesDelayLab);
    retriesDelayLab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.WriteRetriesDelay.Label"));
    fd = new FormData();
    fd.left = new FormAttachment(0, -margin);
    fd.top = new FormAttachment(wWriteRetries, margin);
    fd.right = new FormAttachment(middle, -margin);
    retriesDelayLab.setLayoutData(fd);
    wWriteRetryDelay = new TextVar(variables, wOutputComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wWriteRetryDelay);
    fd = new FormData();
    fd.left = new FormAttachment(middle, 0);
    fd.top = new FormAttachment(wWriteRetries, margin);
    fd.right = new FormAttachment(100, 0);
    wWriteRetryDelay.setLayoutData(fd);
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(0, 0);
    fd.right = new FormAttachment(100, 0);
    fd.bottom = new FormAttachment(100, 0);
    wOutputComp.setLayoutData(fd);
    wOutputComp.layout();
    wOutputOptionsTab.setControl(wOutputComp);
    // --- start of the fields tab
    CTabItem wMongoFieldsTab = new CTabItem(wTabFolder, SWT.NONE);
    wMongoFieldsTab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.FieldsTab.TabTitle"));
    Composite wFieldsComp = new Composite(wTabFolder, SWT.NONE);
    props.setLook(wFieldsComp);
    FormLayout filterLayout = new FormLayout();
    filterLayout.marginWidth = 3;
    filterLayout.marginHeight = 3;
    wFieldsComp.setLayout(filterLayout);
    final ColumnInfo[] colInf = new ColumnInfo[] { new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.Incoming"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.Path"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.UseIncomingName"), ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] { "Y", "N" }), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.NullValues"), ColumnInfo.COLUMN_TYPE_CCOMBO, BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.NullValues.Insert"), BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.NullValues.Ignore")), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.JSON"), ColumnInfo.COLUMN_TYPE_CCOMBO, "Y", "N"), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.UpdateMatchField"), ColumnInfo.COLUMN_TYPE_CCOMBO, "Y", "N"), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.ModifierUpdateOperation"), ColumnInfo.COLUMN_TYPE_CCOMBO, "N/A", "$set", "$inc", "$push"), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Fields.ModifierApplyPolicy"), ColumnInfo.COLUMN_TYPE_CCOMBO, "Insert&Update", "Insert", "Update") };
    // get fields but
    Button wbGetFields = new Button(wFieldsComp, SWT.PUSH | SWT.CENTER);
    props.setLook(wbGetFields);
    wbGetFields.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.GetFieldsBut"));
    fd = new FormData();
    fd.bottom = new FormAttachment(100, -margin * 2);
    fd.left = new FormAttachment(0, margin);
    wbGetFields.setLayoutData(fd);
    wbGetFields.addListener(SWT.Selection, e -> getFields());
    Button wbPreviewDocStruct = new Button(wFieldsComp, SWT.PUSH | SWT.CENTER);
    props.setLook(wbPreviewDocStruct);
    wbPreviewDocStruct.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.PreviewDocStructBut"));
    fd = new FormData();
    fd.bottom = new FormAttachment(100, -margin * 2);
    fd.left = new FormAttachment(wbGetFields, margin);
    wbPreviewDocStruct.setLayoutData(fd);
    wbPreviewDocStruct.addListener(SWT.Selection, e -> previewDocStruct());
    wMongoFields = new TableView(variables, wFieldsComp, SWT.FULL_SELECTION | SWT.MULTI, colInf, 1, lsMod, props);
    fd = new FormData();
    fd.top = new FormAttachment(0, margin * 2);
    fd.bottom = new FormAttachment(wbGetFields, -margin * 2);
    fd.left = new FormAttachment(0, 0);
    fd.right = new FormAttachment(100, 0);
    wMongoFields.setLayoutData(fd);
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(0, 0);
    fd.right = new FormAttachment(100, 0);
    fd.bottom = new FormAttachment(100, 0);
    wFieldsComp.setLayoutData(fd);
    wFieldsComp.layout();
    wMongoFieldsTab.setControl(wFieldsComp);
    // indexes tab ------------------
    CTabItem wMongoIndexesTab = new CTabItem(wTabFolder, SWT.NONE);
    wMongoIndexesTab.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.IndexesTab.TabTitle"));
    Composite wIndexesComp = new Composite(wTabFolder, SWT.NONE);
    props.setLook(wIndexesComp);
    FormLayout indexesLayout = new FormLayout();
    indexesLayout.marginWidth = 3;
    indexesLayout.marginHeight = 3;
    wIndexesComp.setLayout(indexesLayout);
    final ColumnInfo[] colInf2 = new ColumnInfo[] { new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Indexes.IndexFields"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Indexes.IndexOpp"), ColumnInfo.COLUMN_TYPE_CCOMBO, false), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Indexes.Unique"), ColumnInfo.COLUMN_TYPE_CCOMBO, false), new ColumnInfo(BaseMessages.getString(PKG, "MongoDbOutputDialog.Indexes.Sparse"), ColumnInfo.COLUMN_TYPE_CCOMBO, false) };
    colInf2[1].setComboValues(new String[] { "Create", "Drop" });
    colInf2[1].setReadOnly(true);
    // 
    colInf2[2].setComboValues(new String[] { "Y", "N" });
    colInf2[2].setReadOnly(true);
    // 
    colInf2[3].setComboValues(new String[] { "Y", "N" });
    colInf2[3].setReadOnly(true);
    // get indexes but
    Button wbShowIndexes = new Button(wIndexesComp, SWT.PUSH | SWT.CENTER);
    props.setLook(wbShowIndexes);
    // 
    wbShowIndexes.setText(BaseMessages.getString(PKG, "MongoDbOutputDialog.ShowIndexesBut"));
    fd = new FormData();
    fd.bottom = new FormAttachment(100, -margin * 2);
    fd.left = new FormAttachment(0, margin);
    wbShowIndexes.setLayoutData(fd);
    wbShowIndexes.addListener(SWT.Selection, e -> showIndexInfo());
    wMongoIndexes = new TableView(variables, wIndexesComp, SWT.FULL_SELECTION | SWT.MULTI, colInf2, 1, lsMod, props);
    fd = new FormData();
    fd.top = new FormAttachment(0, margin * 2);
    fd.bottom = new FormAttachment(wbShowIndexes, -margin * 2);
    fd.left = new FormAttachment(0, 0);
    fd.right = new FormAttachment(100, 0);
    wMongoIndexes.setLayoutData(fd);
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(0, 0);
    fd.right = new FormAttachment(100, 0);
    fd.bottom = new FormAttachment(100, 0);
    wIndexesComp.setLayoutData(fd);
    wIndexesComp.layout();
    wMongoIndexesTab.setControl(wIndexesComp);
    fd = new FormData();
    fd.left = new FormAttachment(0, 0);
    fd.top = new FormAttachment(wTransformName, margin);
    fd.right = new FormAttachment(100, 0);
    fd.bottom = new FormAttachment(wOk, -2 * margin);
    wTabFolder.setLayoutData(fd);
    wTabFolder.setSelection(0);
    getData();
    BaseDialog.defaultShellHandling(shell, c -> ok(), c -> cancel());
    return transformName;
}

Example 2 with BaseTransformDialog

use of org.apache.hop.ui.pipeline.transform.BaseTransformDialog in project hop by apache.

the class StreamSchemaDialog method open.

/**
 * The constructor should simply invoke super() and save the incoming meta object to a local
 * variable, so it can conveniently read and write settings from/to it.
 *
 * <p>or null if the user cancelled the dialog.
 */
@Override
public String open() {
    // store some convenient SWT variables
    Shell parent = getParent();
    // SWT code for preparing the dialog
    shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MIN | SWT.MAX);
    props.setLook(shell);
    setShellImage(shell, meta);
    // Save the value of the changed flag on the meta object. If the user cancels
    // the dialog, it will be restored to this saved value.
    // The "changed" variable is inherited from BaseTransformDialog
    changed = meta.hasChanged();
    // The ModifyListener used on all controls. It will update the meta object to
    // indicate that changes are being made.
    ModifyListener lsMod = e -> meta.setChanged();
    // ------------------------------------------------------- //
    // SWT code for building the actual settings dialog        //
    // ------------------------------------------------------- //
    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;
    shell.setLayout(formLayout);
    shell.setText(BaseMessages.getString(PKG, "StreamSchemaTransform.Shell.Title"));
    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;
    // TransformName line
    Label wlTransformName = new Label(shell, SWT.RIGHT);
    wlTransformName.setText(BaseMessages.getString(PKG, "System.Label.TransformName"));
    props.setLook(wlTransformName);
    fdlTransformName = new FormData();
    fdlTransformName.left = new FormAttachment(0, 0);
    fdlTransformName.right = new FormAttachment(middle, -margin);
    fdlTransformName.top = new FormAttachment(0, margin);
    wlTransformName.setLayoutData(fdlTransformName);
    wTransformName = new Text(shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    wTransformName.setText(transformName);
    props.setLook(wTransformName);
    wTransformName.addModifyListener(lsMod);
    fdTransformName = new FormData();
    fdTransformName.left = new FormAttachment(middle, 0);
    fdTransformName.top = new FormAttachment(0, margin);
    fdTransformName.right = new FormAttachment(100, 0);
    wTransformName.setLayoutData(fdTransformName);
    // OK, get and cancel buttons
    wOk = new Button(shell, SWT.PUSH);
    wOk.setText(BaseMessages.getString(PKG, "System.Button.OK"));
    wGet = new Button(shell, SWT.PUSH);
    wGet.setText(BaseMessages.getString(PKG, "StreamSchema.getPreviousTransforms.Label"));
    wCancel = new Button(shell, SWT.PUSH);
    wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));
    setButtonPositions(new Button[] { wOk, wGet, wCancel }, margin, null);
    // Table with fields for inputting transform names
    Label wlTransforms = new Label(shell, SWT.NONE);
    wlTransforms.setText(BaseMessages.getString(PKG, "StreamSchemaTransformDialog.Transforms.Label"));
    props.setLook(wlTransforms);
    FormData fdlTransforms = new FormData();
    fdlTransforms.left = new FormAttachment(0, 0);
    fdlTransforms.top = new FormAttachment(wTransformName, margin);
    wlTransforms.setLayoutData(fdlTransforms);
    final int FieldsCols = 1;
    final int FieldsRows = meta.getNumberOfTransforms();
    previousTransforms = pipelineMeta.getPrevTransformNames(transformName);
    ColumnInfo[] colinf = new ColumnInfo[FieldsCols];
    colinf[0] = new ColumnInfo(BaseMessages.getString(PKG, "StreamSchemaTransformDialog.TransformName.Column"), ColumnInfo.COLUMN_TYPE_CCOMBO, previousTransforms, false);
    wTransforms = new TableView(variables, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI, colinf, FieldsRows, lsMod, props);
    FormData fdTransforms = new FormData();
    fdTransforms.left = new FormAttachment(0, 0);
    fdTransforms.top = new FormAttachment(wlTransforms, margin);
    fdTransforms.right = new FormAttachment(100, 0);
    fdTransforms.bottom = new FormAttachment(wOk, -2 * margin);
    wTransforms.setLayoutData(fdTransforms);
    // Add listeners for cancel and OK
    wCancel.addListener(SWT.Selection, e -> cancel());
    wOk.addListener(SWT.Selection, e -> ok());
    wGet.addListener(SWT.Selection, e -> get());
    // populate the dialog with the values from the meta object
    populateDialog();
    // restore the changed flag to original value, as the modify listeners fire during dialog
    // population
    meta.setChanged(changed);
    // open dialog and enter event loop
    BaseDialog.defaultShellHandling(shell, c -> ok(), c -> cancel());
    // The "TransformName" variable is inherited from BaseTransformDialog
    return transformName;
}