taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/forms/openurl/OpenUrlReferencePage.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.forms.openurl;
  12
  13 import java.net.URI;
  14 import java.util.List;
  15
  16 import org.eclipse.jface.operation.IRunnableWithProgress;
  17 import org.eclipse.jface.wizard.WizardPage;
  18 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.events.SelectionEvent;
  20 import org.eclipse.swt.events.SelectionListener;
  21 import org.eclipse.swt.layout.GridData;
  22 import org.eclipse.swt.layout.GridLayout;
  23 import org.eclipse.swt.widgets.Button;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.swt.widgets.Label;
  26 import org.eclipse.ui.forms.widgets.ScrolledForm;
  27
  28 import eu.etaxonomy.cdm.ext.openurl.OpenUrlReference;
  29 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  30 import eu.etaxonomy.taxeditor.forms.CdmFormFactory;
  31 import eu.etaxonomy.taxeditor.forms.ImageElement;
  32 import eu.etaxonomy.taxeditor.forms.RootElement;
  33
  34 /**
  35  * @author n.hoffmann
  36  * @created Jan 31, 2011
  37  * @version 1.0
  38  */
  39 public class OpenUrlReferencePage extends WizardPage implements SelectionListener {
  40
  41         public static final String NAME = "OpenUrlReferencePage";
  42
  43         private static final int NEXT = 1;
  44         private static final int PREVIOUS = -1;
  45
  46         private ImageElement imageElement;
  47         private RootElement rootElement;
  48         private ScrolledForm scrolledForm;
  49         private Button button_next;
  50         private Button button_previous;
  51
  52         private OpenUrlReference reference;
  53
  54         private Composite container;
  55
  56         private Label label_pageNumber;
  57
  58         /**
  59          * @param pageName
  60          */
  61         protected OpenUrlReferencePage() {
  62                 super(NAME);
  63         }
  64
  65         /* (non-Javadoc)
  66          * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
  67          */
  68         @Override
  69         public void createControl(Composite parent) {
  70                 container = getWizard().getFormFactory().createComposite(parent, SWT.NULL);
  71
  72                 container.setLayout(new GridLayout());
  73                 container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  74
  75                 scrolledForm = getWizard().getFormFactory().createScrolledForm(container);
  76                 scrolledForm.getBody().setLayout(CdmFormFactory.LAYOUT(3, false));
  77                 scrolledForm.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, true));
  78
  79                 Composite buttonContainer = getWizard().getFormFactory().createComposite(container);
  80                 buttonContainer.setLayout(new GridLayout(3, true));
  81                 buttonContainer.setLayoutData(new GridData(SWT.FILL, SWT.BOTTOM, true, false));
  82
  83                 button_previous = getWizard().getFormFactory().createButton(buttonContainer, "Previous", SWT.PUSH);
  84                 button_previous.addSelectionListener(this);
  85                 button_previous.setLayoutData(new GridData(SWT.LEFT, SWT.BOTTOM, true, false));
  86
  87                 label_pageNumber = getWizard().getFormFactory().createLabel(buttonContainer, "              ");
  88
  89                 button_next = getWizard().getFormFactory().createButton(buttonContainer, "Next", SWT.PUSH);
  90                 button_next.addSelectionListener(this);
  91                 button_next.setLayoutData(new GridData(SWT.RIGHT, SWT.BOTTOM, true, false));
  92
  93                 scrolledForm.getBody().setLayoutData(CdmFormFactory.FILL());
  94
  95                 rootElement = new RootElement(getWizard().getFormFactory(), scrolledForm.getBody());
  96
  97                 imageElement = getWizard().getFormFactory().createImageElement(rootElement, null, SWT.BORDER);
  98
  99                 setControl(container);
 100         }
 101
 102         public OpenUrlSelectorWizard getWizard(){
 103                 return (OpenUrlSelectorWizard) super.getWizard();
 104         }
 105
 106         /**
 107          * @param jpegImage
 108          */
 109         public void displayImage() {
 110                 URI imageUri = getWizard().getOpenUrlReferenceImageUri();
 111                 imageElement.setImageUri(imageUri);
 112
 113                 IRunnableWithProgress runnable = imageElement.getLoadImageRunnable(new Runnable(){
 114                         /* (non-Javadoc)
 115                          * @see java.lang.Runnable#run()
 116                          */
 117                         @Override
 118                         public void run() {
 119                                 container.layout();
 120
 121                                 configurePageBar();
 122                         }
 123                 });
 124
 125                 try {
 126                         getWizard().getContainer().run(true, false, runnable);
 127                 } catch (Exception e) {
 128                         EditorUtil.errorDialog("Could not load image", getClass(), e.getMessage()  + ": " + imageUri , e);
 129                 }
 130         }
 131
 132         /**
 133          *
 134          */
 135         private void configurePageBar() {
 136                 setTitle(getWizard().getOpenUrlReference().getTitleCache());
 137                 String pageNumber = getWizard().getOpenUrlReference().getPages();
 138                 label_pageNumber.setText(pageNumber);
 139                 button_previous.setEnabled(canPage(PREVIOUS));
 140                 button_next.setEnabled(canPage(NEXT));
 141         }
 142
 143         /* (non-Javadoc)
 144          * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
 145          */
 146         @Override
 147         public void widgetSelected(SelectionEvent e) {
 148                 if(e.getSource() == button_next){
 149                         pageResult(NEXT);
 150                 }else{
 151                         pageResult(PREVIOUS);
 152                 }
 153         }
 154
 155         private void pageResult(int direction){
 156                 try {
 157                         List<OpenUrlReference> referenceList = getWizard().getOpenUrlServiceWrapper().doPage(getWizard().getOpenUrlReference(), direction);
 158                         OpenUrlReference openUrlReference = referenceList.iterator().next();
 159                         getWizard().setOpenUrlReference(openUrlReference);
 160                         displayImage();
 161                         setErrorMessage(null);
 162                 } catch (IllegalArgumentException e) {
 163                         setErrorMessage(String.format("Could not page: %s", e.getLocalizedMessage()));
 164                 } catch (Exception e) {
 165                         EditorUtil.error(getClass(), e);
 166                 }
 167         }
 168
 169         private boolean canPage(int direction){
 170                 try{
 171                         getWizard().getOpenUrlServiceWrapper().doPage(getWizard().getOpenUrlReference(), direction);
 172                 }catch (IllegalArgumentException e) {
 173                         return false;
 174                 }
 175                 return true;
 176         }
 177
 178         /* (non-Javadoc)
 179          * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
 180          */
 181         @Override
 182         public void widgetDefaultSelected(SelectionEvent e) {}
 183 }