eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/openurl/OpenUrlReferencePage.java

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