JobEntryDelayDialog.java

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 * Pentaho Data Integration
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 * Copyright (C) 2002-2016 by Pentaho : http://www.pentaho.com
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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
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package org.pentaho.di.ui.job.entries.delay;

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.MessageBox;
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.job.JobMeta;
import org.pentaho.di.job.entries.delay.JobEntryDelay;
import org.pentaho.di.job.entry.JobEntryDialogInterface;
import org.pentaho.di.job.entry.JobEntryInterface;
import org.pentaho.di.repository.Repository;
import org.pentaho.di.ui.core.gui.WindowProperty;
import org.pentaho.di.ui.core.widget.LabelTextVar;
import org.pentaho.di.ui.job.dialog.JobDialog;
import org.pentaho.di.ui.job.entry.JobEntryDialog;
import org.pentaho.di.ui.trans.step.BaseStepDialog;

/**
 * This dialog allows you to edit the delay job entry settings.
 *
 * @author Samatar Hassan
 * @since 21-02-2007
 */
public class JobEntryDelayDialog extends JobEntryDialog implements JobEntryDialogInterface {
  private static Class<?> PKG = JobEntryDelay.class; // for i18n purposes, needed by Translator2!!

  private Label wlName;
  private Text wName;
  private FormData fdlName, fdName;

  private CCombo wScaleTime;
  private FormData fdScaleTime;

  private LabelTextVar wMaximumTimeout;
  private FormData fdMaximumTimeout;

  private Button wOK, wCancel;
  private Listener lsOK, lsCancel;

  private JobEntryDelay jobEntry;
  private Shell shell;

  private SelectionAdapter lsDef;

  private boolean changed;

  public JobEntryDelayDialog( Shell parent, JobEntryInterface jobEntryInt, Repository rep, JobMeta jobMeta ) {
    super( parent, jobEntryInt, rep, jobMeta );
    jobEntry = (JobEntryDelay) jobEntryInt;
    if ( this.jobEntry.getName() == null ) {
      this.jobEntry.setName( BaseMessages.getString( PKG, "JobEntryDelay.Title" ) );
    }
  }

  public JobEntryInterface open() {
    Shell parent = getParent();
    Display display = parent.getDisplay();

    shell = new Shell( parent, props.getJobsDialogStyle() );
    props.setLook( shell );
    JobDialog.setShellImage( shell, jobEntry );

    ModifyListener lsMod = new ModifyListener() {
      public void modifyText( ModifyEvent e ) {
        jobEntry.setChanged();
      }
    };
    changed = jobEntry.hasChanged();

    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;

    shell.setLayout( formLayout );
    shell.setText( BaseMessages.getString( PKG, "JobEntryDelay.Title" ) );

    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;

    // Name line
    wlName = new Label( shell, SWT.RIGHT );
    wlName.setText( BaseMessages.getString( PKG, "JobEntryDelay.Name.Label" ) );
    props.setLook( wlName );
    fdlName = new FormData();
    fdlName.left = new FormAttachment( 0, -margin );
    fdlName.right = new FormAttachment( middle, 0 );
    fdlName.top = new FormAttachment( 0, margin );
    wlName.setLayoutData( fdlName );
    wName = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wName );
    wName.addModifyListener( lsMod );
    fdName = new FormData();
    fdName.left = new FormAttachment( middle, margin );
    fdName.top = new FormAttachment( 0, margin );
    fdName.right = new FormAttachment( 100, 0 );
    wName.setLayoutData( fdName );

    // MaximumTimeout line
    wMaximumTimeout =
      new LabelTextVar(
        jobMeta, shell, BaseMessages.getString( PKG, "JobEntryDelay.MaximumTimeout.Label" ), BaseMessages
          .getString( PKG, "JobEntryDelay.MaximumTimeout.Tooltip" ) );
    props.setLook( wMaximumTimeout );
    wMaximumTimeout.addModifyListener( lsMod );
    fdMaximumTimeout = new FormData();
    fdMaximumTimeout.left = new FormAttachment( 0, -margin );
    fdMaximumTimeout.top = new FormAttachment( wName, margin );
    fdMaximumTimeout.right = new FormAttachment( 100, 0 );
    wMaximumTimeout.setLayoutData( fdMaximumTimeout );

    // Whenever something changes, set the tooltip to the expanded version:
    wMaximumTimeout.addModifyListener( new ModifyListener() {
      public void modifyText( ModifyEvent e ) {
        wMaximumTimeout.setToolTipText( jobMeta.environmentSubstitute( wMaximumTimeout.getText() ) );
      }
    } );

    // Scale time

    wScaleTime = new CCombo( shell, SWT.SINGLE | SWT.READ_ONLY | SWT.BORDER );
    wScaleTime.add( BaseMessages.getString( PKG, "JobEntryDelay.SScaleTime.Label" ) );
    wScaleTime.add( BaseMessages.getString( PKG, "JobEntryDelay.MnScaleTime.Label" ) );
    wScaleTime.add( BaseMessages.getString( PKG, "JobEntryDelay.HrScaleTime.Label" ) );
    wScaleTime.select( 0 ); // +1: starts at -1

    props.setLook( wScaleTime );
    fdScaleTime = new FormData();
    fdScaleTime.left = new FormAttachment( middle, 0 );
    fdScaleTime.top = new FormAttachment( wMaximumTimeout, margin );
    fdScaleTime.right = new FormAttachment( 100, 0 );
    wScaleTime.setLayoutData( fdScaleTime );

    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" ) );

    BaseStepDialog.positionBottomButtons( shell, new Button[] { wOK, wCancel }, margin, wScaleTime );

    // 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();
      }
    };

    wName.addSelectionListener( lsDef );
    wMaximumTimeout.addSelectionListener( lsDef );

    // 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 ( !display.readAndDispatch() ) {
        display.sleep();
      }
    }
    return jobEntry;
  }

  public void dispose() {
    WindowProperty winprop = new WindowProperty( shell );
    props.setScreen( winprop );
    shell.dispose();
  }

  /**
   * Copy information from the meta-data input to the dialog fields.
   */
  public void getData() {
    if ( jobEntry.getName() != null ) {
      wName.setText( jobEntry.getName() );
    }
    if ( jobEntry.getMaximumTimeout() != null ) {
      wMaximumTimeout.setText( jobEntry.getMaximumTimeout() );
    }

    wScaleTime.select( jobEntry.scaleTime );

    wName.selectAll();
    wName.setFocus();
  }

  private void cancel() {
    jobEntry.setChanged( changed );
    jobEntry = null;
    dispose();
  }

  private void ok() {
    if ( Utils.isEmpty( wName.getText() ) ) {
      MessageBox mb = new MessageBox( shell, SWT.OK | SWT.ICON_ERROR );
      mb.setText( BaseMessages.getString( PKG, "System.StepJobEntryNameMissing.Title" ) );
      mb.setMessage( BaseMessages.getString( PKG, "System.JobEntryNameMissing.Msg" ) );
      mb.open();
      return;
    }
    jobEntry.setName( wName.getText() );
    jobEntry.setMaximumTimeout( wMaximumTimeout.getText() );
    jobEntry.scaleTime = wScaleTime.getSelectionIndex();
    dispose();
  }

  public boolean evaluates() {
    return true;
  }

  public boolean isUnconditional() {
    return false;
  }
}