Examples of org.eclipse.ui.IEditorPart

org.eclipse.ui.IEditorPart
An editor is a visual component within a workbench page. It is typically used to edit or browse a document or input object. The input is identified using an IEditorInput. Modifications made in an editor part follow an open-save-close lifecycle model (in contrast to a view part, where modifications are saved to the workbench immediately).
An editor is document or input-centric. Each editor has an input, and only one editor can exist for each editor input within a page. This policy has been designed to simplify part management.
An editor should be used in place of a view whenever more than one instance of a document type can exist.
This interface may be implemented directly. For convenience, a base implementation is defined in EditorPart.

An editor part is added to the workbench in two stages:
1. An editor extension is contributed to the workbench registry. This extension defines the extension id, extension class, and the file extensions which are supported by the editor.
2. An editor part based upon the extension is created and added to the workbench when the user opens a file with one of the supported file extensions (or some other suitable form of editor input).
All editor parts implement the IAdaptable interface; extensions are managed by the platform's adapter manager.
@see org.eclipse.ui.IWorkbenchPage#openEditor(IEditorInput,String) @see org.eclipse.ui.part.EditorPart


public class ExpandCollapseAllHandler extends AbstractHandler {


    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final IEditorPart activeEditor = HandlerUtil.getActiveEditor(event);
        if (!(activeEditor instanceof ErlangEditor)) {
            return null;
        }
        final ErlangEditor editor = (ErlangEditor) activeEditor;
        final boolean collapse = event.getParameter(

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    public void run() {


        if (isEnabled()) {
            try {
                if (selectedElement2 != null) {
                    final IEditorPart part = EditorUtility.openInEditor(selectedElement,
                            true);
                    EditorUtility.revealInEditor(part, selectedElement);
                }
                if (selectedElement != null) {
                    if (selectedElement instanceof IErlExternal) {
                        final StructuredViewer structuredViewer = site
                                .getStructuredViewer();
                        if (structuredViewer instanceof AbstractTreeViewer) {
                            final AbstractTreeViewer treeViewer = (AbstractTreeViewer) structuredViewer;
                            final boolean expanded = treeViewer
                                    .getExpandedState(selectedElement);
                            treeViewer.setExpandedState(selectedElement, !expanded);
                        }
                    } else {
                        final IEditorPart part = EditorUtility.openInEditor(
                                selectedElement, true);
                        EditorUtility.revealInEditor(part, selectedElement);
                    }
                } else if (!selectedClosedProjects.isEmpty()) {
                    openResourceAction.selectionChanged((IStructuredSelection) provider

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        } else if (obj.getClass().equals(FunctionStats.class)) {


            final FunctionStats fs = (FunctionStats) obj;


            final String moduleName = ((StatsTreeObject) fs.getParent()).getLabel();
            final IEditorPart p = openInEditor(moduleName + ".erl");


            if (p == null || !(p instanceof ErlangEditor)) {
                return;
            }

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                .getStore(fileToOpen.toURI());
        final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
                .getActivePage();


        try {
            final IEditorPart p = IDE.openEditorOnFileStore(page, fileStore);


            log.info(p.getClass());


            return p;


        } catch (final PartInitException e) {
            ErlLogger.error(e);

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        final IWorkbenchWindow window = getSite().getWorkbenchWindow();
        final IWorkbenchPage page = window.getActivePage();
        if (page == null) {
            return false;
        }
        final IEditorPart activeEditor = page.getActiveEditor();
        return activeEditor != null && activeEditor.equals(this);
    }

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            final boolean activate) throws PartInitException {
        final IEditorInput input = getEditorInput(inputElement);
        if (input == null) {
            return null;
        }
        final IEditorPart editorPart = openInEditor(input,
                getEditorID(input, inputElement), activate);


        if (editorPart != null && inputElement instanceof IErlElement) {
            revealInEditor(editorPart, (IErlElement) inputElement);
            return editorPart;

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    private static IEditorPart openInEditor(final IFile file, final boolean activate)
            throws PartInitException {
        if (file != null) {
            final IWorkbenchPage p = ErlideUIPlugin.getActivePage();
            if (p != null) {
                final IEditorPart editorPart = IDE.openEditor(p, file, activate);
                return editorPart;
            }
        }
        return null;
    }

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    private static IEditorPart openInEditor(final IEditorInput input,
            final String editorID, final boolean activate) throws PartInitException {
        if (input != null) {
            final IWorkbenchPage p = ErlideUIPlugin.getActivePage();
            if (p != null) {
                final IEditorPart editorPart = p.openEditor(input, editorID, activate);
                return editorPart;
            }
        }
        return null;
    }

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    /**
     * Opens the editor on the given element and subsequently selects it.
     */
    public static void openElementInEditor(final Object element, final boolean activate)
            throws PartInitException {
        final IEditorPart part = EditorUtility.openInEditor(element, activate);
        if (element instanceof IErlElement) {
            EditorUtility.revealInEditor(part, (IErlElement) element);
        }
    }

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     * return null
     */
    public static IErlElement getActiveEditorErlangInput() {
        final IWorkbenchPage page = ErlideUIPlugin.getActivePage();
        if (page != null) {
            final IEditorPart part = page.getActiveEditor();
            if (part != null) {
                final IEditorInput editorInput = part.getEditorInput();
                if (editorInput != null) {
                    return (IErlElement) editorInput.getAdapter(IErlElement.class);
                    // return JavaUI.getEditorInputJavaElement(editorInput);
                }
            }

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