eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/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.ui.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.store.StoreUtil;
  30 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  31 import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
  32 import eu.etaxonomy.taxeditor.ui.element.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 Composite container;
  53
  54         private Label label_pageNumber;
  55
  56         /**
  57          * @param pageName
  58          */
  59         protected OpenUrlReferencePage() {
  60                 super(NAME);
  61         }
  62
  63         /* (non-Javadoc)
  64          * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
  65          */
  66         @Override
  67         public void createControl(Composite parent) {
  68                 container = getWizard().getFormFactory().createComposite(parent, SWT.NULL);
  69
  70                 container.setLayout(new GridLayout());
  71                 container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  72
  73                 scrolledForm = getWizard().getFormFactory().createScrolledForm(container);
  74                 scrolledForm.getBody().setLayout(LayoutConstants.LAYOUT(3, false));
  75                 scrolledForm.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, true));
  76
  77                 Composite buttonContainer = getWizard().getFormFactory().createComposite(container);
  78                 buttonContainer.setLayout(new GridLayout(3, true));
  79                 buttonContainer.setLayoutData(new GridData(SWT.FILL, SWT.BOTTOM, true, false));
  80
  81                 button_previous = getWizard().getFormFactory().createButton(buttonContainer, "Previous", SWT.PUSH);
  82                 button_previous.addSelectionListener(this);
  83                 button_previous.setLayoutData(new GridData(SWT.LEFT, SWT.BOTTOM, true, false));
  84
  85                 label_pageNumber = getWizard().getFormFactory().createLabel(buttonContainer, "              ");
  86                 label_pageNumber.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, false));
  87
  88                 button_next = getWizard().getFormFactory().createButton(buttonContainer, "Next", SWT.PUSH);
  89                 button_next.addSelectionListener(this);
  90                 button_next.setLayoutData(new GridData(SWT.RIGHT, SWT.BOTTOM, true, false));
  91
  92                 scrolledForm.getBody().setLayoutData(LayoutConstants.FILL());
  93
  94                 rootElement = new RootElement(getWizard().getFormFactory(), scrolledForm.getBody());
  95
  96                 imageElement = getWizard().getFormFactory().createImageElement(rootElement, null, SWT.BORDER);
  97
  98                 setControl(container);
  99         }
 100
 101         public OpenUrlSelectorWizard getWizard(){
 102                 return (OpenUrlSelectorWizard) super.getWizard();
 103         }
 104
 105         /**
 106          * @param jpegImage
 107          */
 108         public void displayImage() {
 109                 URI imageUri = getWizard().getOpenUrlReferenceImageUri();
 110                 try {
 111                         imageElement.initImageUri(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                         getWizard().getContainer().run(true, false, runnable);
 126                 } catch (Exception e) {
 127                         StoreUtil.errorDialog("Could not load image", getClass(), e.getMessage()  + ": " + imageUri , e);
 128                 }
 129         }
 130
 131         /**
 132          *
 133          */
 134         private void configurePageBar() {
 135                 setTitle(getWizard().getOpenUrlReference().getTitleCache());
 136                 String pageNumber = getWizard().getOpenUrlReference().getPages();
 137                 label_pageNumber.setText(pageNumber);
 138                 button_previous.setEnabled(canPage(PREVIOUS));
 139                 button_next.setEnabled(canPage(NEXT));
 140         }
 141
 142         /* (non-Javadoc)
 143          * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
 144          */
 145         @Override
 146         public void widgetSelected(SelectionEvent e) {
 147                 if(e.getSource() == button_next){
 148                         pageResult(NEXT);
 149                 }else{
 150                         pageResult(PREVIOUS);
 151                 }
 152         }
 153
 154         private void pageResult(int direction){
 155                 try {
 156                         List<OpenUrlReference> referenceList = getWizard().getOpenUrlServiceWrapper().doPage(getWizard().getOpenUrlReference(), direction);
 157                         OpenUrlReference openUrlReference = referenceList.iterator().next();
 158                         getWizard().setOpenUrlReference(openUrlReference);
 159                         displayImage();
 160                         setErrorMessage(null);
 161                 } catch (IllegalArgumentException e) {
 162                         setErrorMessage(String.format("Could not page: %s", e.getLocalizedMessage()));
 163                 } catch (Exception e) {
 164                         StoreUtil.error(getClass(), e);
 165                 }
 166         }
 167
 168         private boolean canPage(int direction){
 169                 try{
 170                         getWizard().getOpenUrlServiceWrapper().doPage(getWizard().getOpenUrlReference(), direction);
 171                 }catch (IllegalArgumentException e) {
 172                         return false;
 173                 }
 174                 return true;
 175         }
 176
 177         /* (non-Javadoc)
 178          * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
 179          */
 180         @Override
 181         public void widgetDefaultSelected(SelectionEvent e) {}
 182 }