Example usage for org.eclipse.jface.viewers IStructuredSelection getFirstElement

List of usage examples for org.eclipse.jface.viewers IStructuredSelection getFirstElement

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Introduction

In this page you can find the example usage for org.eclipse.jface.viewers IStructuredSelection getFirstElement.

Prototype

public Object getFirstElement();

Source Link

Document

Returns the first element in this selection, or null if the selection is empty.

Usage

From source file:coloredide.astview.ASTView.java

License:Open Source License

public void createPartControl(Composite parent) {
    fSash = new SashForm(parent, SWT.VERTICAL | SWT.SMOOTH);
    fViewer = new TreeViewer(fSash, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    fDrillDownAdapter = new DrillDownAdapter(fViewer);
    fViewer.setContentProvider(new ASTViewContentProvider());
    fASTLabelProvider = new ASTViewLabelProvider(this);
    fViewer.setLabelProvider(fASTLabelProvider);
    fViewer.addSelectionChangedListener(fSuperListener);
    fViewer.addDoubleClickListener(fSuperListener);
    fViewer.addFilter(fNonRelevantFilter);

    ViewForm trayForm = new ViewForm(fSash, SWT.NONE);
    Label label = new Label(trayForm, SWT.NONE);
    label.setText(" Comparison Tray (* = selection in the upper tree):"); //$NON-NLS-1$
    trayForm.setTopLeft(label);/*from  www.  jav  a2s .  c o m*/

    fTray = new TreeViewer(trayForm, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    trayForm.setContent(fTray.getTree());

    fTrayRoots = new ArrayList();
    fTray.setContentProvider(new TrayContentProvider());
    final TrayLabelProvider trayLabelProvider = new TrayLabelProvider();
    fTray.setLabelProvider(trayLabelProvider);
    fTray.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
    fTrayUpdater = new ISelectionChangedListener() {
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection viewerSelection = (IStructuredSelection) fViewer.getSelection();
            if (viewerSelection.size() == 1) {
                if (DynamicAttributeProperty.unwrapAttribute(viewerSelection.getFirstElement()) != null) {
                    trayLabelProvider.setViewerElement(viewerSelection.getFirstElement());
                    return;
                }
            }
            trayLabelProvider.setViewerElement(null);
        }
    };
    fTray.addPostSelectionChangedListener(fTrayUpdater);
    fViewer.addPostSelectionChangedListener(fTrayUpdater);
    fTray.addDoubleClickListener(new IDoubleClickListener() {
        public void doubleClick(DoubleClickEvent event) {
            performTrayDoubleClick();
        }
    });
    fTray.addSelectionChangedListener(new ISelectionChangedListener() {
        public void selectionChanged(SelectionChangedEvent event) {
            IStructuredSelection selection = (IStructuredSelection) event.getSelection();
            boolean deleteEnabled = false;
            if (selection.size() == 1 && selection.getFirstElement() instanceof Binding)
                deleteEnabled = fTray.getTree().isFocusControl();
            fDeleteAction.setEnabled(deleteEnabled);
        }
    });
    fTray.getTree().addFocusListener(new FocusAdapter() {
        public void focusGained(FocusEvent e) {
            IStructuredSelection selection = (IStructuredSelection) fTray.getSelection();
            boolean deleteEnabled = false;
            if (selection.size() == 1 && selection.getFirstElement() instanceof Binding)
                deleteEnabled = true;
            fDeleteAction.setEnabled(deleteEnabled);
        }

        public void focusLost(FocusEvent e) {
            fDeleteAction.setEnabled(false);
        }
    });

    makeActions();
    hookContextMenu();
    hookTrayContextMenu();
    contributeToActionBars();
    getSite().setSelectionProvider(new ASTViewSelectionProvider());

    try {
        IEditorPart part = EditorUtility.getActiveEditor();
        if (part instanceof ITextEditor) {
            setInput((ITextEditor) part);
        }
    } catch (CoreException e) {
        // ignore
    }
    if (fColoredJavaSourceFile == null) {
        clearView();
    } else {
        setASTUptoDate(fColoredJavaSourceFile != null);
    }
}

From source file:coloredide.astview.ASTView.java

License:Open Source License

protected void handleSelectionChanged(ISelection selection) {
    fExpandAction.setEnabled(!selection.isEmpty());
    fCollapseAction.setEnabled(!selection.isEmpty());
    fCopyAction.setEnabled(!selection.isEmpty());

    boolean addEnabled = false;
    IStructuredSelection structuredSelection = (IStructuredSelection) selection;
    if (structuredSelection.size() == 1 && fViewer.getTree().isFocusControl()) {
        Object first = structuredSelection.getFirstElement();
        Object unwrapped = DynamicAttributeProperty.unwrapAttribute(first);
        addEnabled = unwrapped != null;/*from w  w  w . j ava2s.  c  o m*/
    }
    fAddToTrayAction.setEnabled(addEnabled);
}

From source file:coloredide.astview.ASTView.java

License:Open Source License

protected void performTrayDoubleClick() {
    IStructuredSelection selection = (IStructuredSelection) fTray.getSelection();
    if (selection.size() != 1)
        return;//w ww  .j av  a2s.c o m
    Object obj = selection.getFirstElement();
    if (obj instanceof ExceptionAttribute) {
        RuntimeException exception = ((ExceptionAttribute) obj).getException();
        if (exception != null) {
            String label = ((ExceptionAttribute) obj).getLabel();
            showAndLogError("An error occurred while calculating an AST View Label:\n" + label, exception); //$NON-NLS-1$
            return;
        }
    }
    if (obj instanceof Binding) {
        Binding binding = (Binding) obj;
        fViewer.setSelection(new StructuredSelection(binding), true);
    }
}

From source file:coloredide.astview.ASTView.java

License:Open Source License

protected void performDelete() {
    IStructuredSelection selection = (IStructuredSelection) fTray.getSelection();
    if (selection.size() != 1)
        return;/*from   www.j av  a 2  s.c  o m*/
    Object obj = selection.getFirstElement();
    if (obj instanceof Binding) {
        int index = fTrayRoots.indexOf(obj);
        if (index != -1) {
            fTrayRoots.remove(index);
            fTray.setInput(fTrayRoots);
            int newSize = fTrayRoots.size();
            if (newSize == 0)
                return;
            else if (index == newSize)
                setTraySelection(new StructuredSelection(fTrayRoots.get(newSize - 1)));
            else
                setTraySelection(new StructuredSelection(fTrayRoots.get(index)));
        }
    }
}

From source file:com.agynamix.platform.frontend.action.RemoveSelectedClipboardEntry.java

License:Open Source License

public void selectionChanged(SelectionChangedEvent event) {
    //    System.out.println("Source: "+event.getSource());
    //    System.out.println("Selection Class "+event.getSelection().getClass());
    //    System.out.println(event.getSelectionProvider().getClass().getName());
    if (event.getSelection() instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) event.getSelection();
        Object first = ss.getFirstElement();
        if (first != null) {
            //        System.out.println("First Element Class: "+first.getClass().getName());
            if (first instanceof IClipboardItem) {
                setEnabled(true);/*from w  w w. j  av a 2  s . c  o  m*/
            }
        } else {
            //        System.out.println("First Element EMPTY");
            setEnabled(false);
        }
    }
}

From source file:com.agynamix.simidude.frontend.gui.ClipboardTableDragSource.java

License:Open Source License

protected IClipboardItem getSelectedItem() {
    ISelection s = tableViewer.getSelection();
    if (s instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) s;
        Object item = ss.getFirstElement();
        if (item instanceof IClipboardItem) {
            return (IClipboardItem) item;
        }//from   w  w  w .  java  2s  .  co  m
    }
    return null;
}

From source file:com.aliyun.odps.eclipse.launch.shortcut.udf.UDFLaunchShortcuts1.java

License:Apache License

public IResource getLaunchableResource(ISelection selection) {
    if (selection instanceof IStructuredSelection) {
        IStructuredSelection ss = (IStructuredSelection) selection;
        if (ss.size() == 1) {
            Object element = ss.getFirstElement();
            if (element instanceof IAdaptable) {
                return getLaunchableResource((IAdaptable) element);
            }//  w w  w . j a  v  a2  s.  co  m
        }
    }
    return null;
}

From source file:com.amalto.workbench.actions.XSDAddComplexTypeElementAction.java

License:Open Source License

private boolean init() {
    IStructuredSelection selection = (IStructuredSelection) page.getTreeViewer().getSelection();

    if (selection.getFirstElement() instanceof XSDParticle) {
        selParticle = (XSDParticle) selection.getFirstElement();

        if (!(selParticle.getContainer() instanceof XSDModelGroup)) {
            return false;
        }/*www  . ja v  a  2 s .  c  o  m*/

        modelGroup = (XSDModelGroup) selParticle.getContainer();
    } else {
        if (selection.getFirstElement() instanceof XSDComplexTypeDefinition) {
            XSDComplexTypeDefinition ctd = (XSDComplexTypeDefinition) selection.getFirstElement();
            if (!(ctd.getContent() instanceof XSDParticle)) {
                return false;
            }
            if (!(((XSDParticle) ctd.getContent()).getTerm() instanceof XSDModelGroup)) {
                return false;
            }
            ;
            modelGroup = (XSDModelGroup) ((XSDParticle) ctd.getContent()).getTerm();
        } else if (selection.getFirstElement() instanceof XSDParticle) {
            modelGroup = (XSDModelGroup) ((XSDParticle) selection.getFirstElement()).getTerm();
        } else if (selection.getFirstElement() instanceof XSDModelGroup) {
            modelGroup = (XSDModelGroup) selection.getFirstElement();
        } else {
            log.info(Messages.bind(Messages._UnkownSection, selection.getFirstElement().getClass().getName(),
                    selection.getFirstElement().toString()));
            return false;
        }
    }

    return true;
}

From source file:com.amalto.workbench.actions.XSDAnnotationLookupFieldsAction.java

License:Open Source License

public IStatus doAction() {
    try {//  w  w w  .  j  a v a2s.c om
        IStructuredSelection selection = (TreeSelection) page.getTreeViewer().getSelection();
        XSDComponent xSDCom = null;
        if (selection.getFirstElement() instanceof Element) {
            TreePath tPath = ((TreeSelection) selection).getPaths()[0];
            for (int i = 0; i < tPath.getSegmentCount(); i++) {
                if (tPath.getSegment(i) instanceof XSDAnnotation)
                    xSDCom = (XSDAnnotation) (tPath.getSegment(i));
            }
        } else
            xSDCom = (XSDComponent) selection.getFirstElement();
        XSDAnnotationsStructure struc = new XSDAnnotationsStructure(xSDCom);
        struc.setXSDSchema(schema);
        // IStructuredSelection selection = (IStructuredSelection) page
        // .getTreeViewer().getSelection();
        // XSDAnnotationsStructure struc = new XSDAnnotationsStructure(
        // (XSDComponent) selection.getFirstElement());
        if (struc.getAnnotation() == null) {
            throw new RuntimeException(Messages.bind(Messages.XSDAnnotationLookupFieldsAction_ExceptionInfo,
                    xSDCom.getClass().getName()));
        }

        dlg = new AnnotationOrderedListsDialog(new ArrayList(struc.getLookupFields().values()),
                new SelectionListener() {

                    public void widgetDefaultSelected(SelectionEvent e) {
                    }

                    public void widgetSelected(SelectionEvent e) {
                        dlg.close();
                    }
                }, page.getSite().getShell(), Messages.XSDAnnotationLookupFieldsAction_SetLookupFields,
                Messages.XSDAnnotationLookupFieldsAction_LookupFields, page,
                AnnotationOrderedListsDialog.AnnotationLookupField_ActionType, null);

        dlg.setBlockOnOpen(true);
        int ret = dlg.open();
        if (ret == Window.CANCEL) {
            return Status.CANCEL_STATUS;
        }

        struc.setAccessRole(dlg.getXPaths(), false,
                (IStructuredContentProvider) page.getTreeViewer().getContentProvider(), "X_Lookup_Field");//$NON-NLS-1$

        if (struc.hasChanged()) {
            page.refresh();
            page.getTreeViewer().expandToLevel(xSDCom, 2);
            page.markDirty();
        }

    } catch (Exception e) {
        log.error(e.getMessage(), e);
        MessageDialog.openError(page.getSite().getShell(), Messages._Error,
                Messages.bind(Messages.XSDAnnotationLookupFieldsAction_ErrorMsg, e.getLocalizedMessage()));
        return Status.CANCEL_STATUS;
    }
    return Status.OK_STATUS;
}

From source file:com.amalto.workbench.actions.XSDChangeBaseTypeAction.java

License:Open Source License

@Override
public IStatus doAction() {
    try {//from   w ww  .  j  a  va 2s . c o  m
        IStructuredSelection selection = (IStructuredSelection) page.getTreeViewer().getSelection();
        XSDSimpleTypeDefinition typedef = (XSDSimpleTypeDefinition) selection.getFirstElement();

        // Cannot change the simple type definition of built in type
        // if (schema.getSchemaForSchemaNamespace().equals(typedef.getTargetNamespace())) return
        // Status.CANCEL_STATUS;

        // build list of custom types and built in types
        ArrayList customTypes = new ArrayList();
        for (Object element : schema.getTypeDefinitions()) {
            XSDTypeDefinition type = (XSDTypeDefinition) element;
            if (type instanceof XSDSimpleTypeDefinition) {
                if (type.getTargetNamespace() != null
                        && !type.getTargetNamespace().equals(XSDConstants.SCHEMA_FOR_SCHEMA_URI_2001)
                        || type.getTargetNamespace() == null) {
                    customTypes.add(type.getName());
                }
            }
        }
        List builtInTypes = XSDUtil.getBuiltInTypes();
        // can't change builtin's base type
        if (builtInTypes.contains(typedef.getName())) {
            return Status.CANCEL_STATUS;
        }
        dialog = new SimpleTypeInputDialog(this, page.getSite().getShell(), schema,
                Messages.XSDChangeBaseTypeAction_DialogTitle, customTypes, builtInTypes,
                typedef.getBaseTypeDefinition().getName());

        dialog.setBlockOnOpen(true);
        int ret = dialog.open();
        if (ret == Window.CANCEL) {
            return Status.CANCEL_STATUS;
        }

        // backup current Base Type
        XSDTypeDefinition current = typedef.getBaseTypeDefinition();

        // set new one
        if (builtIn) {
            typedef.setBaseTypeDefinition(
                    schema.resolveSimpleTypeDefinition(schema.getSchemaForSchemaNamespace(), typeName));
        } else {
            // check if simple type definition already exists
            XSDSimpleTypeDefinition std = schema.resolveSimpleTypeDefinition(typeName);
            if (!schema.getTypeDefinitions().contains(std)) {
                std.setBaseTypeDefinition(
                        schema.resolveSimpleTypeDefinition(schema.getSchemaForSchemaNamespace(), "string"));//$NON-NLS-1$
                schema.getContents().add(std);
            }
            typedef.setBaseTypeDefinition(std);
        }

        // remove current facets
        typedef.getFacetContents().removeAll(typedef.getFacetContents());

        typedef.updateElement();

        if (builtIn) {
            EList<XSDConstrainingFacet> constrainFacts = typedef.getBaseTypeDefinition().getFacetContents();
            for (XSDConstrainingFacet fact : constrainFacts) {
                if (fact instanceof XSDPatternFacet) {
                    XSDPatternFacet newFact = XSDSchemaBuildingTools.getXSDFactory().createXSDPatternFacet();
                    newFact.setLexicalValue(((XSDPatternFacet) fact).getLexicalValue());
                    typedef.getFacetContents().add(newFact);
                }
            }
            typedef.updateElement();
        }

        // remove current if no more in use
        // if ( (current.getName()!=null) && //anonymous type
        // (!schema.getSchemaForSchemaNamespace().equals(current.getTargetNamespace()))
        // ){
        // List eut =Util.findElementsUsingType(schema, current.getTargetNamespace(), current.getName());
        // if (eut.size()==0)
        // schema.getContents().remove(current);
        // }

        page.refresh();
        page.markDirty();

    } catch (Exception e) {
        log.error(e.getMessage(), e);
        MessageDialog.openError(page.getSite().getShell(), Messages._Error,
                Messages.bind(Messages.XSDChangeBaseTypeAction_ErrorMsg1, e.getLocalizedMessage()));
        return Status.CANCEL_STATUS;
    }
    return Status.OK_STATUS;
}