eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/CdmViewerChooser.java

   1 // $Id$
   2 /**
   3  * Copyright (C) 2015 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 package eu.etaxonomy.taxeditor.view;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14
  15 import org.eclipse.core.runtime.CoreException;
  16 import org.eclipse.core.runtime.IConfigurationElement;
  17 import org.eclipse.core.runtime.IExtensionRegistry;
  18 import org.eclipse.core.runtime.InvalidRegistryObjectException;
  19 import org.eclipse.core.runtime.Platform;
  20 import org.eclipse.jface.dialogs.PopupDialog;
  21 import org.eclipse.jface.viewers.ArrayContentProvider;
  22 import org.eclipse.jface.viewers.ILabelProvider;
  23 import org.eclipse.jface.viewers.ILabelProviderListener;
  24 import org.eclipse.jface.viewers.ISelection;
  25 import org.eclipse.jface.viewers.ISelectionChangedListener;
  26 import org.eclipse.jface.viewers.IStructuredSelection;
  27 import org.eclipse.jface.viewers.SelectionChangedEvent;
  28 import org.eclipse.jface.viewers.TableViewer;
  29 import org.eclipse.swt.SWT;
  30 import org.eclipse.swt.graphics.Image;
  31 import org.eclipse.swt.widgets.Composite;
  32 import org.eclipse.swt.widgets.Control;
  33 import org.eclipse.swt.widgets.Shell;
  34 import org.eclipse.swt.widgets.Table;
  35
  36 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  37
  38 /**
  39  * This class provides the possibility to choose from a list of possible viewers
  40  * which can be opened for a given input in a popup dialog.
  41  *
  42  * @author pplitzner
  43  * @date Feb 23, 2015
  44  *
  45  */
  46 public class CdmViewerChooser extends PopupDialog implements ISelectionChangedListener, ILabelProvider{
  47
  48     private Object input;
  49     private Collection<IConfigurationElement> partConfigurationElements;
  50
  51     public CdmViewerChooser(Shell parentShell) {
  52         this(parentShell, SWT.RESIZE | SWT.ON_TOP, true, false, false, false, false, "Open in ...",
  53                 "Clicking will open the selected viewer");
  54     }
  55
  56     public CdmViewerChooser(Shell parent, int shellStyle, boolean takeFocusOnOpen, boolean persistSize,
  57             boolean persistLocation, boolean showDialogMenu, boolean showPersistActions, String titleText,
  58             String infoText) {
  59         super(parent, shellStyle, takeFocusOnOpen, persistSize, persistLocation, showDialogMenu, showPersistActions,
  60                 titleText, infoText);
  61     }
  62
  63     /**
  64      * Opens a popup dialog with all possible viewers for the given input.
  65      * @param input the input for which the viewers are listed
  66      */
  67     public void chooseViewer(Object input){
  68         this.input = input;
  69         partConfigurationElements = new ArrayList<>();
  70
  71         IExtensionRegistry reg = Platform.getExtensionRegistry();
  72         IConfigurationElement[] extensions = reg
  73                 .getConfigurationElementsFor("eu.etaxonomy.taxeditor.store.cdmViewer");
  74         for (IConfigurationElement e : extensions) {
  75             for (IConfigurationElement inputConfigurationElement : e.getChildren("input")) {
  76                 String inputClass = inputConfigurationElement.getAttribute("class");
  77                 if(inputClass.equals(input.getClass().toString())){
  78                     System.out.println("input class: " + inputClass);
  79                     for (IConfigurationElement partConfigurationElement : inputConfigurationElement.getChildren("part")) {
  80                         partConfigurationElements.add(partConfigurationElement);
  81                     }
  82                 }
  83             }
  84         }
  85         this.open();
  86     }
  87
  88     /* (non-Javadoc)
  89      * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
  90      */
  91     @Override
  92     protected Control createDialogArea(Composite parent) {
  93         TableViewer viewer = new TableViewer(new Table(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION));
  94         viewer.setContentProvider(new ArrayContentProvider());
  95         viewer.setLabelProvider(this);
  96         viewer.addSelectionChangedListener(this);
  97         viewer.setInput(partConfigurationElements);
  98         return parent;
  99     }
 100
 101     /* (non-Javadoc)
 102      * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
 103      */
 104     @Override
 105     public void selectionChanged(SelectionChangedEvent event) {
 106         ISelection selection = event.getSelection();
 107         if(selection instanceof IStructuredSelection){
 108             Object firstElement = ((IStructuredSelection) selection).getFirstElement();
 109             if(firstElement instanceof IConfigurationElement){
 110                 IConfigurationElement configElement = (IConfigurationElement)firstElement;
 111                 String viewerClass = configElement.getAttribute("class");
 112                 try {
 113                     //get the grand parent (this is the cdmViewer)
 114                     Object o = ((IConfigurationElement)((IConfigurationElement)configElement.getParent()).getParent()).createExecutableExtension("class");
 115                     if(o instanceof ICdmViewer){
 116                         ((ICdmViewer) o).show(input, viewerClass);
 117                     this.close();
 118                     }
 119                 } catch (InvalidRegistryObjectException e) {
 120                     MessagingUtils.error(CdmViewerChooser.class, "Could not load cdmViewer extension", e);
 121                 } catch (CoreException e) {
 122                     MessagingUtils.error(CdmViewerChooser.class, "Could not load cdmViewer extension", e);
 123                 }
 124             }
 125         }
 126     }
 127
 128     /* (non-Javadoc)
 129      * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 130      */
 131     @Override
 132     public String getText(Object element) {
 133         String text = null;
 134         if(element instanceof IConfigurationElement){
 135             IConfigurationElement configElement = (IConfigurationElement)element;
 136             text = configElement.getAttribute("name");
 137             if(text==null){
 138                 text = configElement.getAttribute("class");
 139             }
 140         }
 141         return text;
 142     }
 143
 144     /* (non-Javadoc)
 145      * @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
 146      */
 147     @Override
 148     public void addListener(ILabelProviderListener listener) {
 149         // TODO Auto-generated method stub
 150
 151     }
 152
 153     /* (non-Javadoc)
 154      * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
 155      */
 156     @Override
 157     public void dispose() {
 158         // TODO Auto-generated method stub
 159
 160     }
 161
 162     /* (non-Javadoc)
 163      * @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
 164      */
 165     @Override
 166     public boolean isLabelProperty(Object element, String property) {
 167         // TODO Auto-generated method stub
 168         return false;
 169     }
 170
 171     /* (non-Javadoc)
 172      * @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
 173      */
 174     @Override
 175     public void removeListener(ILabelProviderListener listener) {
 176         // TODO Auto-generated method stub
 177
 178     }
 179
 180     /* (non-Javadoc)
 181      * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
 182      */
 183     @Override
 184     public Image getImage(Object element) {
 185         // TODO Auto-generated method stub
 186         return null;
 187     }
 188
 189 }