CopyTableWizardPage1.java

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 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2013 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
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package org.pentaho.di.ui.spoon.wizards;

import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.List;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.ui.core.PropsUI;

/**
 *
 * On page one we select the source and target databases...
 *
 * @author Matt
 * @since 29-mar-05
 */
public class CopyTableWizardPage1 extends WizardPage {
  private static Class<?> PKG = CopyTableWizard.class; // for i18n purposes, needed by Translator2!!

  private List wSourceDB, wTargetDB;
  private FormData fdSourceDB, fdTargetDB;

  private PropsUI props;
  private java.util.List<DatabaseMeta> databases;

  /** @deprecated */
  @Deprecated
  public CopyTableWizardPage1( String arg, PropsUI props, java.util.List<DatabaseMeta> databases ) {
    this( arg, databases );
  }

  public CopyTableWizardPage1( String arg, java.util.List<DatabaseMeta> databases ) {
    super( arg );
    this.props = PropsUI.getInstance();
    this.databases = databases;

    setTitle( BaseMessages.getString( PKG, "CopyTableWizardPage1.Dialog.Title" ) );
    setDescription( BaseMessages.getString( PKG, "CopyTableWizardPage1.Dialog.Description" ) );

    setPageComplete( false );
  }

  public void createControl( Composite parent ) {
    int margin = Const.MARGIN;

    // create the composite to hold the widgets
    Composite composite = new Composite( parent, SWT.NONE );
    props.setLook( composite );

    FormLayout compLayout = new FormLayout();
    compLayout.marginHeight = Const.FORM_MARGIN;
    compLayout.marginWidth = Const.FORM_MARGIN;
    composite.setLayout( compLayout );

    wSourceDB = new List( composite, SWT.SINGLE | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL );
    props.setLook( wSourceDB );
    for ( int i = 0; i < databases.size(); i++ ) {
      DatabaseMeta dbInfo = databases.get( i );
      wSourceDB.add( dbInfo.getName() );
    }
    fdSourceDB = new FormData();
    fdSourceDB.top = new FormAttachment( 0, 0 );
    fdSourceDB.left = new FormAttachment( 0, 0 );
    fdSourceDB.bottom = new FormAttachment( 100, 0 );
    fdSourceDB.right = new FormAttachment( 50, 0 );
    wSourceDB.setLayoutData( fdSourceDB );
    wSourceDB.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        setPageComplete( false );
      }
    } );

    wTargetDB = new List( composite, SWT.SINGLE | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL );
    props.setLook( wTargetDB );
    for ( int i = 0; i < databases.size(); i++ ) {
      DatabaseMeta dbInfo = databases.get( i );
      wTargetDB.add( dbInfo.getName() );
    }
    fdTargetDB = new FormData();
    fdTargetDB.top = new FormAttachment( 0, 0 );
    fdTargetDB.left = new FormAttachment( 50, margin );
    fdTargetDB.bottom = new FormAttachment( 100, 0 );
    fdTargetDB.right = new FormAttachment( 100, 0 );
    wTargetDB.setLayoutData( fdTargetDB );
    wTargetDB.addSelectionListener( new SelectionAdapter() {
      public void widgetSelected( SelectionEvent e ) {
        setPageComplete( false );
      }
    } );

    // set the composite as the control for this page
    setControl( composite );
  }

  public boolean canFlipToNextPage() {
    DatabaseMeta source = getSourceDatabase();
    DatabaseMeta target = getTargetDatabase();

    if ( source == null && target == null ) {
      setErrorMessage( BaseMessages.getString( PKG, "CopyTableWizardPage1.SourceAndTargetIsNull.DialogMessage" ) );
      return false;
    } else if ( source == null && target != null ) {
      setErrorMessage( BaseMessages.getString( PKG, "CopyTableWizardPage1.SourceIsNull.DialogMessage" ) );
      return false;
    } else if ( source != null && target == null ) {
      setErrorMessage( BaseMessages.getString( PKG, "CopyTableWizardPage1.TargetIsNull.DialogMessage" ) );
      return false;
    } else if ( source != null && target != null && source.equals( target ) ) {
      setErrorMessage( BaseMessages.getString( PKG, "CopyTableWizardPage1.SourceAndTargetIsSame.DialogMessage" ) );
      return false;
    } else {
      setErrorMessage( null );
      setMessage( BaseMessages.getString( PKG, "CopyTableWizardPage1.GoOnNext.DialogMessage" ) );
      return true;
    }
  }

  public DatabaseMeta getSourceDatabase() {
    if ( wSourceDB.getSelection().length == 1 ) {
      String sourceDbName = wSourceDB.getSelection()[0];
      return DatabaseMeta.findDatabase( databases, sourceDbName );
    }
    return null;
  }

  public DatabaseMeta getTargetDatabase() {
    if ( wTargetDB.getSelection().length == 1 ) {
      String targetDbName = wTargetDB.getSelection()[0];
      return DatabaseMeta.findDatabase( databases, targetDbName );
    }
    return null;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.eclipse.jface.wizard.WizardPage#getNextPage()
   */
  public IWizardPage getNextPage() {
    CopyTableWizardPage2 page2 = (CopyTableWizardPage2) super.getNextPage();
    if ( page2.getInputData() ) {
      page2.getData();
      return page2;
    }
    return this;
  }
}