Examples with LibFormulaEditor org.pentaho.libformula.ui.editor.LibFormulaEditor used on opensource projects

Example 1 with LibFormulaEditor

use of org.pentaho.libformula.ui.editor.LibFormulaEditor in project pentaho-kettle by pentaho.

the class FormulaDialog method open.

@Override
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, currentMeta);
    ModifyListener lsMod = new ModifyListener() {

        @Override
        public void modifyText(ModifyEvent 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, "FormulaDialog.DialogTitle"));
    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;
    // Stepname line
    wlStepname = new Label(shell, SWT.RIGHT);
    wlStepname.setText(BaseMessages.getString(PKG, "System.Label.StepName"));
    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);
    wlFields = new Label(shell, SWT.NONE);
    wlFields.setText(BaseMessages.getString(PKG, "FormulaDialog.Fields.Label"));
    props.setLook(wlFields);
    fdlFields = new FormData();
    fdlFields.left = new FormAttachment(0, 0);
    fdlFields.top = new FormAttachment(wStepname, margin);
    wlFields.setLayoutData(fdlFields);
    final int FieldsRows = currentMeta.getFormula() != null ? currentMeta.getFormula().length : 1;
    colinf = new ColumnInfo[] { new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.NewField.Column"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.Formula.Column"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.ValueType.Column"), ColumnInfo.COLUMN_TYPE_CCOMBO, ValueMetaFactory.getValueMetaNames()), new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.Length.Column"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.Precision.Column"), ColumnInfo.COLUMN_TYPE_TEXT, false), new ColumnInfo(BaseMessages.getString(PKG, "FormulaDialog.Replace.Column"), ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {}) };
    wFields = new TableView(transMeta, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI, colinf, FieldsRows, lsMod, props);
    fdFields = new FormData();
    fdFields.left = new FormAttachment(0, 0);
    fdFields.top = new FormAttachment(wlFields, margin);
    fdFields.right = new FormAttachment(100, 0);
    fdFields.bottom = new FormAttachment(100, -50);
    wFields.setLayoutData(fdFields);
    // 
    // Search the fields in the background
    // 
    final Runnable runnable = new Runnable() {

        @Override
        public void run() {
            StepMeta stepMeta = transMeta.findStep(stepname);
            if (stepMeta != null) {
                try {
                    RowMetaInterface row = transMeta.getPrevStepFields(stepMeta);
                    // Remember these fields...
                    for (int i = 0; i < row.size(); i++) {
                        inputFields.put(row.getValueMeta(i).getName(), new Integer(i));
                    }
                    setComboBoxes();
                } catch (KettleException e) {
                    logError(BaseMessages.getString(PKG, "FormulaDialog.Log.UnableToFindInput"));
                }
            }
        }
    };
    new Thread(runnable).start();
    colinf[1].setSelectionAdapter(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            if (fieldNames == null) {
                return;
            }
            TableView tv = (TableView) e.widget;
            TableItem item = tv.table.getItem(e.y);
            String formula = item.getText(e.x);
            try {
                if (!shell.isDisposed()) {
                    LibFormulaEditor libFormulaEditor = new LibFormulaEditor(shell, SWT.APPLICATION_MODAL | SWT.SHEET, Const.NVL(formula, ""), fieldNames);
                    formula = libFormulaEditor.open();
                    if (formula != null && !tv.isDisposed()) {
                        tv.setText(formula, e.x, e.y);
                    }
                }
            } catch (Exception ex) {
                new ErrorDialog(shell, "Error", "There was an unexpected error in the formula editor", ex);
            }
        }
    });
    wFields.addModifyListener(new ModifyListener() {

        @Override
        public void modifyText(ModifyEvent arg0) {
            // Now set the combo's
            shell.getDisplay().asyncExec(new Runnable() {

                @Override
                public void run() {
                    setComboBoxes();
                }
            });
        }
    });
    // 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, null);
    // Add listeners
    lsCancel = new Listener() {

        @Override
        public void handleEvent(Event e) {
            cancel();
        }
    };
    lsOK = new Listener() {

        @Override
        public void handleEvent(Event e) {
            ok();
        }
    };
    wCancel.addListener(SWT.Selection, lsCancel);
    wOK.addListener(SWT.Selection, lsOK);
    lsDef = new SelectionAdapter() {

        @Override
        public void widgetDefaultSelected(SelectionEvent e) {
            ok();
        }
    };
    wStepname.addSelectionListener(lsDef);
    // Detect X or ALT-F4 or something that kills this window...
    shell.addShellListener(new ShellAdapter() {

        @Override
        public void shellClosed(ShellEvent e) {
            cancel();
        }
    });
    // Set the shell size, based upon previous time...
    setSize();
    getData();
    currentMeta.setChanged(changed);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {
            display.sleep();
        }
    }
    return stepname;
}