Examples of org.eclipse.ui.IEditorInput

org.eclipse.ui.IEditorInput
IEditorInput is a light weight descriptor of editor input, like a file name but more abstract. It is not a model. It is a description of the model source for an IEditorPart.
Clients implementing this editor input interface should override Object.equals(Object) to answer true for two inputs that are the same. The IWorbenchPage.openEditor APIs are dependent on this to find an editor with the same input.

Clients should extend this interface to declare new types of editor inputs.

An editor input is passed to an editor via the IEditorPart.init method. Due to the wide range of valid editor inputs, it is not possible to define generic methods for getting and setting bytes.

Editor input must implement the IAdaptable interface; extensions are managed by the platform's adapter manager.

Please note that it is important that the editor input be light weight. Within the workbench, the navigation history tends to hold on to editor inputs as a means of reconstructing the editor at a later time. The navigation history can hold on to quite a few inputs (i.e., the default is fifty). The actual data model should probably not be held in the input.
@see org.eclipse.ui.IEditorPart @see org.eclipse.ui.IWorkbenchPage#openEditor(IEditorInput,String) @see org.eclipse.ui.IWorkbenchPage#openEditor(IEditorInput,String,boolean)

   * @return
   */
  public IEditorPart getEmptyEditor(EditorDescriptor descr) {
        ErrorEditorPart part = new ErrorEditorPart();
        
        IEditorInput input;
        try {
            input = getEditorInput();
        } catch (PartInitException e1) {
            input = new NullEditorInput();
        }

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      }
      
      private void updateNavigationHistory(IWorkbenchPartReference partRef, boolean partClosed) {
                if (partRef != null && partRef.getPart(false) instanceof IEditorPart) {
                    IEditorPart editor = (IEditorPart) partRef.getPart(false);
                    IEditorInput input = editor.getEditorInput();
                    String id = editor.getSite().getId();
                    Iterator e = editors.iterator();
                    NavigationHistoryEditorInfo info = null;
                    NavigationHistoryEditorInfo currentInfo = null;
                    NavigationHistoryEntry current = getEntry(activeEntry);
                    if (current != null) {
            currentInfo = current.editorInfo;
          }
                    while (e.hasNext()) {
                        info = (NavigationHistoryEditorInfo) e.next();
                        if (id.equals(info.editorID)
                                && input.equals(info.editorInput)) {
                            if (partClosed && info != currentInfo) {
                info.handlePartClosed();
              }
                            break;
                        }

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    }


    public NavigationHistoryEntry createEntry(IWorkbenchPage page,
            IEditorPart part, INavigationLocation location) {
        String editorID = part.getSite().getId();
        IEditorInput editorInput = part.getEditorInput();
        NavigationHistoryEditorInfo info = null;
        for (Iterator iter = editors.iterator(); iter.hasNext();) {
            info = (NavigationHistoryEditorInfo) iter.next();
            if (editorID.equals(info.editorID)
                    && editorInput.equals(info.editorInput)) {
                info.refCount++;
                break;
            } else {
                info = null;
            }

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    public void switchToTemplateOrJavaFile() {


        IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
        IEditorPart editor = activePage.getActiveEditor();
        if (editor != null) {
            IEditorInput input = editor.getEditorInput();
            if (input != null) {
                IFile currentFile = (input instanceof IFileEditorInput) ? ((IFileEditorInput) input).getFile() : null;
                switchToTemplateOrJavaFile(currentFile);
            }
        }

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    ICompilationUnit cu = null;
    try {
      IEditorPart editor = AbstractCrystalPlugin.getDefault()
          .getWorkbench().getActiveWorkbenchWindow().getActivePage()
          .getActiveEditor();
      IEditorInput input = editor.getEditorInput();
      if (input instanceof IPathEditorInput) {
        IPath path = ((IPathEditorInput) input).getPath();
        IFile f = ResourcesPlugin.getWorkspace().getRoot().getFileForLocation(path);
        cu = JavaCore.createCompilationUnitFrom(f);
      }

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            // Handle cross window drops by opening a new editor
            if (pane instanceof EditorPane) {
              if (pane.getWorkbenchWindow() != stack.getWorkbenchWindow()) {
                EditorPane editor = (EditorPane) pane;
                try {
            IEditorInput input = editor.getEditorReference().getEditorInput();
            
            // Close the old editor and capture the actual closed state incase of a 'cancel'
            boolean editorClosed = editor.getPage().closeEditor(editor.getEditorReference(), true);
            
            // Only open open the new editor if the old one closed

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        IStructuredSelection structuredSelection = (IStructuredSelection) selection;
        Object selectedObject = structuredSelection.getFirstElement();
        return getProjectFromResource(selectedObject);
      } else if (selection instanceof ITextSelection) {
        IEditorPart activeEditor = DesignerPlugin.getActiveEditor();
        IEditorInput editorInput = activeEditor.getEditorInput();
        if (editorInput instanceof IFileEditorInput) {
          IFileEditorInput fileEditorInput = (IFileEditorInput) editorInput;
          return getProjectFromResource(fileEditorInput.getFile());
        }
      }

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                }
            }
            IEditorPart part = page.getActiveEditor();
            if (part != null)
            {
                IEditorInput input = part.getEditorInput();
                return (IJavaElement) input.getAdapter(IJavaElement.class);
            }
        }
        return null;
    }

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  }


  @Override
  protected PageRec doCreatePage(IWorkbenchPart part) {
    EditorPart source = (EditorPart) part;
    IEditorInput editorInput = source.getEditorInput();
    if (editorInput instanceof FileEditorInput) {
      FileEditorInput fileInput = (FileEditorInput) editorInput;
      IResource r = fileInput.getFile();


      TestViewPage testPage = new TestViewPage(r);

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                null);


        icu2.createPackageDeclaration(pkg.getElementName(), null);


        IFile input = (IFile) icu2.getResource();
        final IEditorInput editorInput = new FileEditorInput(input);
        final IEditorDescriptor desc = PlatformUI.getWorkbench()
            .getEditorRegistry().getDefaultEditor(input.getName());


        PlatformUI.getWorkbench().getDisplay()
            .asyncExec(new Runnable() {

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