bundles/org.simantics.graphfile/src/org/simantics/graphfile/hack/GraphFileEditorInput.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.graphfile.hack;
  13
  14 import java.net.URI;
  15
  16 import org.eclipse.core.resources.IFile;
  17 import org.eclipse.core.resources.IStorage;
  18 import org.eclipse.core.runtime.IPath;
  19 import org.eclipse.core.runtime.PlatformObject;
  20 import org.eclipse.core.runtime.content.IContentType;
  21 import org.eclipse.jface.resource.ImageDescriptor;
  22 import org.eclipse.ui.IFileEditorInput;
  23 import org.eclipse.ui.IMemento;
  24 import org.eclipse.ui.IPathEditorInput;
  25 import org.eclipse.ui.IPersistableElement;
  26 import org.eclipse.ui.IURIEditorInput;
  27 import org.eclipse.ui.PlatformUI;
  28 import org.eclipse.ui.ide.IDE;
  29 import org.eclipse.ui.model.IWorkbenchAdapter;
  30
  31
  32 /**
  33  * Editor input for files stored in the graph.
  34  *
  35  * Note: this class is required, since FileEditorInput is not able to load/save GraphFile references.
  36  * Contents of this class are mostly copy-pasted from FileEditorInput.
  37  *
  38  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  39  *
  40  */
  41 public class GraphFileEditorInput  extends PlatformObject implements IFileEditorInput, IPathEditorInput, IURIEditorInput,
  42  IPersistableElement {
  43 private GraphFile file;
  44
  45
  46         /**
  47          * Creates an editor input based of the given file resource.
  48          *
  49          * @param file the file resource
  50          */
  51         public GraphFileEditorInput(GraphFile file) {
  52                 if (file == null)
  53                         throw new IllegalArgumentException();
  54                 this.file = file;
  55
  56         }
  57
  58         /* (non-Javadoc)
  59          * Method declared on Object.
  60          */
  61         public int hashCode() {
  62                 return file.hashCode();
  63         }
  64
  65         /* (non-Javadoc)
  66          * Method declared on Object.
  67          *
  68          * The <code>FileEditorInput</code> implementation of this <code>Object</code>
  69          * method bases the equality of two <code>FileEditorInput</code> objects on the
  70          * equality of their underlying <code>IFile</code> resources.
  71          */
  72         public boolean equals(Object obj) {
  73                 if (this == obj) {
  74                         return true;
  75                 }
  76                 if (!(obj instanceof IFileEditorInput)) {
  77                         return false;
  78                 }
  79                 IFileEditorInput other = (IFileEditorInput) obj;
  80                 return file.equals(other.getFile());
  81         }
  82
  83         /* (non-Javadoc)
  84          * Method declared on IEditorInput.
  85          */
  86         public boolean exists() {
  87                 return file.exists();
  88         }
  89
  90         /* (non-Javadoc)
  91          * Method declared on IPersistableElement.
  92          */
  93         public String getFactoryId() {
  94                 return GraphFileEditorInputFactory.getFactoryId();
  95         }
  96
  97         /* (non-Javadoc)
  98          * Method declared on IFileEditorInput.
  99          */
 100         public IFile getFile() {
 101                 return file;
 102         }
 103
 104         /* (non-Javadoc)
 105          * Method declared on IEditorInput.
 106          */
 107         public ImageDescriptor getImageDescriptor() {
 108                 IContentType contentType = IDE.getContentType(file);
 109                 return PlatformUI.getWorkbench().getEditorRegistry()
 110                                 .getImageDescriptor(file.getName(), contentType);
 111         }
 112
 113         /* (non-Javadoc)
 114          * Method declared on IEditorInput.
 115          */
 116         public String getName() {
 117                 return file.getName();
 118         }
 119
 120         /* (non-Javadoc)
 121          * Method declared on IEditorInput.
 122          */
 123         public IPersistableElement getPersistable() {
 124                 return this;
 125         }
 126
 127         /* (non-Javadoc)
 128          * Method declared on IStorageEditorInput.
 129          */
 130         public IStorage getStorage() {
 131                 return file;
 132         }
 133
 134         /* (non-Javadoc)
 135          * Method declared on IEditorInput.
 136          */
 137         public String getToolTipText() {
 138                 return file.getFullPath().makeRelative().toString();
 139         }
 140
 141         /* (non-Javadoc)
 142          * Method declared on IPersistableElement.
 143          */
 144         public void saveState(IMemento memento) {
 145                 GraphFileEditorInputFactory.saveState(memento, this);
 146         }
 147
 148
 149
 150         /* (non-Javadoc)
 151          * @see org.eclipse.ui.IURIEditorInput#getURI()
 152          */
 153         public URI getURI() {
 154                 return file.getLocationURI();
 155         }
 156
 157
 158         /* (non-Javadoc)
 159          * @see org.eclipse.ui.IPathEditorInput#getPath()
 160          */
 161         public IPath getPath() {
 162                 IPath location = file.getLocation();
 163                 if (location != null)
 164                         return location;
 165
 166                 throw new IllegalArgumentException();
 167         }
 168
 169
 170         /* (non-Javadoc)
 171          * @see java.lang.Object#toString()
 172          */
 173         public String toString() {
 174                 return getClass().getName() + "(" + getFile().getFullPath() + ")"; //$NON-NLS-1$ //$NON-NLS-2$
 175         }
 176
 177         /*
 178          * Allows for the return of an {@link IWorkbenchAdapter} adapter.
 179          *
 180          * @since 3.5
 181          *
 182          * @see org.eclipse.core.runtime.PlatformObject#getAdapter(java.lang.Class)
 183          */
 184         @SuppressWarnings("rawtypes")
 185         public Object getAdapter(Class adapter) {
 186                 if (IWorkbenchAdapter.class.equals(adapter)) {
 187                         return new IWorkbenchAdapter() {
 188
 189                                 public Object[] getChildren(Object o) {
 190                                         return new Object[0];
 191                                 }
 192
 193                                 public ImageDescriptor getImageDescriptor(Object object) {
 194                                         return GraphFileEditorInput.this.getImageDescriptor();
 195                                 }
 196
 197                                 public String getLabel(Object o) {
 198                                         return GraphFileEditorInput.this.getName();
 199                                 }
 200
 201                                 public Object getParent(Object o) {
 202                                         return GraphFileEditorInput.this.getFile().getParent();
 203                                 }
 204                         };
 205                 }
 206
 207                 return super.getAdapter(adapter);
 208         }
 209 }