/** Called when the user cancels the dialog. */
private void cancel() {
// The "stepname" variable will be the return value for the open() method.
// Setting to null to indicate that dialog was cancelled.
stepname = null;
// Restoring original "changed" flag on the met aobject
meta.setChanged(changed);
// close the SWT dialog window
dispose();
}
/** Called when the user confirms the dialog */
private void ok() {
// The "stepname" variable will be the return value for the open() method.
// Setting to step name from the dialog control
stepname = wStepname.getText();
// Setting the settings to the meta object
meta.setConsecutiveDelimsAsOne(wRemoveBlanks.getSelection());
int nrfields = wGroup.nrNonEmpty();
meta.allocate(nrfields);
for (int i = 0; i < nrfields; i++) {
TableItem item = wGroup.getNonEmpty(i);
meta.getSourceFields()[i] = item.getText(1);
meta.getSourceDelims()[i] = item.getText(2);
meta.getOutputFields()[i] = item.getText(3);
meta.getOutputDelims()[i] = item.getText(4);
}
// close the SWT dialog window
dispose();
}
/**
* This helper method puts the step configuration stored in the meta object and puts it into the
* dialog controls.
*/
private void populateDialog() {
wRemoveBlanks.setSelection(meta.isConsecutiveDelimsAsOne());
if (meta.getSourceFields() != null) {
for (int i = 0; i < meta.getSourceFields().length; i++) {
TableItem item = wGroup.table.getItem(i);
if (meta.getSourceFields()[i] != null) {
item.setText(1, meta.getSourceFields()[i]);
}
if (meta.getSourceDelims()[i] != null) {
item.setText(2, meta.getSourceDelims()[i]);
}
if (meta.getOutputFields()[i] != null) {
item.setText(3, meta.getOutputFields()[i]);
}
if (meta.getOutputDelims()[i] != null) {
item.setText(4, meta.getOutputDelims()[i]);
}
}
}
wGroup.setRowNums();
wGroup.optWidth(true);
wStepname.selectAll();
wStepname.setFocus();
}
/**
* This method is called by Spoon when the user opens the settings dialog of the step. It should
* open the dialog and return only once the dialog has been closed by the user.
*
* <p>If the user confirms the dialog, the meta object (passed in the constructor) must be updated
* to reflect the new step settings. The changed flag of the meta object must reflect whether the
* step configuration was changed by the dialog.
*
* <p>If the user cancels the dialog, the meta object must not be updated, and its changed flag
* must remain unaltered.
*
* <p>The open() method must return the name of the step after the user has confirmed the dialog,
* or null if the user cancelled the dialog.
*/
public String open() {
// store some convenient SWT variables
Shell parent = getParent();
Display display = parent.getDisplay();
// 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 BaseStepDialog
changed = meta.hasChanged();
// The ModifyListener used on all controls. It will update the meta object to
// indicate that changes are being made.
ModifyListener lsMod =
new ModifyListener() {
public void modifyText(ModifyEvent 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, "UniqueListStep.Shell.Title"));
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);
// Treat Consecutive Delimiters as One
//
wlRemoveBlanks = new Label(shell, SWT.RIGHT);
wlRemoveBlanks.setText("Treat Consecutive Delims as One");
wlRemoveBlanks.setToolTipText(
"Multiple delimiters in a row will be condensed. Essentially removes blank spaces");
props.setLook(wlRemoveBlanks);
fdlRemoveBlanks = new FormData();
fdlRemoveBlanks.left = new FormAttachment(0, 0);
fdlRemoveBlanks.top = new FormAttachment(wStepname, margin);
fdlRemoveBlanks.right = new FormAttachment(middle, -margin);
wlRemoveBlanks.setLayoutData(fdlRemoveBlanks);
wRemoveBlanks = new Button(shell, SWT.CHECK);
wRemoveBlanks.setToolTipText(
"Multiple delimiters in a row will be condensed. Essentially removes blank spaces");
props.setLook(wRemoveBlanks);
wRemoveBlanks.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
meta.setChanged();
}
});
fdRemoveBlanks = new FormData();
fdRemoveBlanks.left = new FormAttachment(middle, 0);
fdRemoveBlanks.top = new FormAttachment(wStepname, margin);
fdRemoveBlanks.right = new FormAttachment(100, 0);
wRemoveBlanks.setLayoutData(fdRemoveBlanks);
// OK 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("Get");
wCancel = new Button(shell, SWT.PUSH);
wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));
setButtonPositions(new Button[] {wOK, wGet, wCancel}, margin, null);
wlGroup = new Label(shell, SWT.NONE);
wlGroup.setText("Fields");
props.setLook(wlGroup);
fdlGroup = new FormData();
fdlGroup.left = new FormAttachment(0, 0);
fdlGroup.top = new FormAttachment(wlRemoveBlanks, margin);
wlGroup.setLayoutData(fdlGroup);
// Fields
colinf =
new ColumnInfo[] {
new ColumnInfo("Field Name", ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {""}, false),
new ColumnInfo("Current Delimiter", ColumnInfo.COLUMN_TYPE_TEXT, false),
new ColumnInfo("Output Field Name (Optional)", ColumnInfo.COLUMN_TYPE_TEXT, false),
new ColumnInfo("Output Delimiter (Optional)", ColumnInfo.COLUMN_TYPE_TEXT, false)
};
int nrRows = (meta.getSourceFields() != null ? meta.getSourceFields().length : 1);
wGroup =
new TableView(
transMeta,
shell,
SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL,
colinf,
nrRows,
lsMod,
props);
fdGroup = new FormData();
fdGroup.left = new FormAttachment(0, 0);
fdGroup.top = new FormAttachment(wlGroup, margin);
fdGroup.right = new FormAttachment(100, 0);
fdGroup.bottom = new FormAttachment(wGet, -margin);
wGroup.setLayoutData(fdGroup);
final Runnable runnable =
new Runnable() {
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(), i);
}
setComboBoxes();
} catch (KettleException e) {
logError(BaseMessages.getString(PKG, "System.Dialog.GetFieldsFailed.Message"));
}
}
}
};
new Thread(runnable).start();
// Add listeners for cancel and OK
lsCancel =
new Listener() {
public void handleEvent(Event e) {
cancel();
}
};
lsOK =
new Listener() {
public void handleEvent(Event e) {
ok();
}
};
lsGet =
new Listener() {
public void handleEvent(Event event) {
get();
}
};
wCancel.addListener(SWT.Selection, lsCancel);
wOK.addListener(SWT.Selection, lsOK);
wGet.addListener(SWT.Selection, lsGet);
// default listener (for hitting "enter")
lsDef =
new SelectionAdapter() {
public void widgetDefaultSelected(SelectionEvent e) {
ok();
}
};
wStepname.addSelectionListener(lsDef);
// Detect X or ALT-F4 or something that kills this window and cancel the dialog properly
shell.addShellListener(
new ShellAdapter() {
public void shellClosed(ShellEvent e) {
cancel();
}
});
// Set/Restore the dialog size based on last position on screen
// The setSize() method is inherited from BaseStepDialog
setSize();
// 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
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
// at this point the dialog has closed, so either ok() or cancel() have been executed
// The "stepname" variable is inherited from BaseStepDialog
return stepname;
}