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

Introduction

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

Prototype

public boolean isEmpty();

Source Link

Document

Returns whether this selection is empty.

Usage

From source file:com.google.dart.tools.ui.callhierarchy.RefreshElementAction.java

License:Open Source License

@Override
public void run() {
    IStructuredSelection selection = (IStructuredSelection) getSelection();
    if (selection.isEmpty()) {
        viewer.getPart().refresh();//from   w ww .ja v a2 s.c o  m
        return;
    }
    List<MethodWrapper> toExpand = new ArrayList<MethodWrapper>();
    for (Iterator<?> iter = selection.iterator(); iter.hasNext();) {
        MethodWrapper element = (MethodWrapper) iter.next();
        boolean isExpanded = viewer.getExpandedState(element);
        element.removeFromCache();
        if (isExpanded) {
            viewer.setExpandedState(element, false);
            toExpand.add(element);
        }
        viewer.refresh(element);
    }
    for (Iterator<MethodWrapper> iter = toExpand.iterator(); iter.hasNext();) {
        MethodWrapper elem = iter.next();
        viewer.setExpandedState(elem, true);
    }
}

From source file:com.google.dart.tools.ui.callhierarchy.RemoveFromViewAction.java

License:Open Source License

/**
 * Checks whether this action can be added for the selected element in the call hierarchy.
 * /*www . j a  v  a  2 s  . c  o  m*/
 * @return <code> true</code> if the action can be added, <code>false</code> otherwise
 */
protected boolean canActionBeAdded() {
    IStructuredSelection selection = (IStructuredSelection) getSelection();
    if (selection.isEmpty()) {
        return false;
    }

    Iterator<?> iter = selection.iterator();
    while (iter.hasNext()) {
        Object element = iter.next();
        if (!(element instanceof MethodWrapper)) {
            return false;
        }
    }

    TreeItem[] items = callHierarchyViewer.getTree().getSelection();
    for (int k = 0; k < items.length; k++) {
        if (!checkForChildren(items[k])) {
            return false;
        }
    }
    return true;
}

From source file:com.google.dart.tools.ui.internal.actions.SelectionConverter.java

License:Open Source License

/**
 * Converts the given structured selection into an array of Java elements. An empty array is
 * returned if one of the elements stored in the structured selection is not of type
 * <code>DartElement</code>//  w  ww. j a  v a  2  s.  co m
 */
public static DartElement[] getElements(IStructuredSelection selection) {
    if (!selection.isEmpty()) {
        DartElement[] result = new DartElement[selection.size()];
        int i = 0;
        for (Iterator<?> iter = selection.iterator(); iter.hasNext(); i++) {
            Object element = iter.next();
            if (!(element instanceof DartElement)) {
                return EMPTY_RESULT;
            }
            result[i] = (DartElement) element;
        }
        return result;
    }
    return EMPTY_RESULT;
}

From source file:com.google.dart.tools.ui.internal.filesview.FilesView.java

License:Open Source License

protected void fillContextMenu(IMenuManager manager) {
    IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();

    // New File/ New Folder 

    if (allElementsAreResources(selection)) {
        manager.add(createFileAction);/*w ww . j a va 2  s.  c o  m*/

    }
    if (selection.size() == 1 && selection.getFirstElement() instanceof IContainer) {
        manager.add(createFolderAction);
    }

    manager.add(createApplicationAction);

    // OPEN GROUP

    if (manager.getItems().length > 0) {
        manager.add(new Separator());
    }

    manager.add(OpenFolderHandler.createCommandAction(getSite().getWorkbenchWindow()));

    // Close folder action (aka Remove from Editor)
    if (!selection.isEmpty() && allElementsAreResources(selection)) {
        // Remove, iff non-empty selection, all elements are IResources
        if (allElementsAreProjects(selection)) {
            manager.add(hideContainerAction);
        }
    }

    // EDIT GROUP

    if (!selection.isEmpty() && allElementsAreResources(selection)) {

        manager.add(new Separator());

        manager.add(copyAction);

        // Copy File Path iff single element and is an IResource

        if (selection.size() == 1) {
            manager.add(copyFilePathAction);
        }

        manager.add(pasteAction);

        if (selection.size() == 1 && selection.getFirstElement() instanceof IFile) {
            manager.add(openAsTextAction);
        }

        manager.add(new Separator());
        manager.add(refreshAction);
    }

    // REFACTOR GROUP

    // Refactor iff all elements are IResources

    if (!selection.isEmpty() && allElementsAreResources(selection)) {
        manager.add(new Separator());
        if (selection.size() == 1) {
            manager.add(renameAction);
            manager.add(moveAction);
        }
        manager.add(cleanUpAction);
        manager.add(new Separator());
        ignoreResourceAction.updateLabel();
        manager.add(ignoreResourceAction);
        if (enableBuilderAction.shouldBeEnabled()) {
            enableBuilderAction.updateLabel();
            manager.add(enableBuilderAction);
        }
        manager.add(new Separator());
        manager.add(deleteAction);
        manager.add(new Separator());
    }
}

From source file:com.google.dart.tools.ui.internal.text.functions.DartElementProvider.java

License:Open Source License

@Override
public Object getInformation2(ITextViewer textViewer, IRegion subject) {
    if (fEditor == null) {
        return null;
    }//from   w  w w. jav a  2 s  .  co m

    try {
        if (fUseCodeResolve) {
            IStructuredSelection sel = SelectionConverter.getStructuredSelection(fEditor);
            if (!sel.isEmpty()) {
                return sel.getFirstElement();
            }
        }
        DartElement element = SelectionConverter.getElementAtOffset(fEditor);
        if (element != null) {
            return element;
        }

        return EditorUtility.getEditorInputDartElement(fEditor, false);
    } catch (DartModelException e) {
        return null;
    }
}

From source file:com.google.devtools.depan.platform.eclipse.ui.widgets.Selections.java

License:Apache License

/**
 * Use when type-coercion occurs late in the process flow.
 *//*from   w  ww  .  j av  a2 s .  c o m*/
public static Object getFirstObject(ISelection selection) {
    if (!(selection instanceof IStructuredSelection)) {
        return null;
    }
    IStructuredSelection choices = ((IStructuredSelection) selection);
    if (choices.isEmpty()) {
        return null;
    }
    return choices.getFirstElement();
}

From source file:com.googlecode.osde.internal.ui.wizards.export.WizardOpenSocialApplicationExportPage.java

License:Apache License

private void validate() {
    IStructuredSelection selection = (IStructuredSelection) projectList.getSelection();
    if (selection.isEmpty()) {
        setErrorMessage(null);//from www .  j a v  a2 s. c  om
        setMessage("Target project is not selected.");
        setPageComplete(false);
        return;
    } else {
        project = (IProject) selection.getFirstElement();
    }
    url = urlText.getText();
    if (StringUtils.isEmpty(url)) {
        setErrorMessage(null);
        setMessage("URL is empty.");
        setPageComplete(false);
        return;
    }
    output = outputText.getText();
    if (StringUtils.isEmpty(output)) {
        setErrorMessage(null);
        setMessage("Output is empty.");
        setPageComplete(false);
        return;
    }
    setErrorMessage(null);
    setMessage(null);
    setPageComplete(true);
}

From source file:com.hangum.tadpole.commons.admin.core.editors.useranddb.UserListComposite.java

License:Open Source License

/**
 * modify user//from w  ww .ja va  2s  . co m
 */
private void modifyUser() {
    IStructuredSelection ss = (IStructuredSelection) userListViewer.getSelection();
    if (!ss.isEmpty()) {
        UserDAO userDao = (UserDAO) ss.getFirstElement();

        ModifyUserDialog dialog = new ModifyUserDialog(getShell(), userDao);
        if (Dialog.OK == dialog.open()) {
            initUI();
        }

    }
}

From source file:com.hangum.tadpole.commons.admin.core.editors.useranddb.UserListComposite.java

License:Open Source License

/**
 * login history/*from   w  w  w  .j  a v  a2 s.c  o m*/
 */
private void loginHistory() {
    IStructuredSelection ss = (IStructuredSelection) userListViewer.getSelection();
    if (!ss.isEmpty()) {
        UserDAO userDao = (UserDAO) ss.getFirstElement();

        UserLoginHistoryDialog dialog = new UserLoginHistoryDialog(
                PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), userDao);
        dialog.open();
    }
}

From source file:com.hangum.tadpole.commons.admin.core.editors.useranddb.UserListComposite.java

License:Open Source License

/**
 * /*from  ww w  . java2 s  . c o  m*/
 */
private void dbList() {
    IStructuredSelection ss = (IStructuredSelection) userListViewer.getSelection();
    if (!ss.isEmpty()) {
        UserDAO userDAO = ((UserDAO) ss.getFirstElement());

        try {
            DBMgntEditorInput userMe = new DBMgntEditorInput(PublicTadpoleDefine.USER_ROLE_TYPE.SYSTEM_ADMIN,
                    userDAO);
            PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().openEditor(userMe,
                    DBMgmtEditor.ID);
        } catch (PartInitException e) {
            logger.error("Database Management editor", e); //$NON-NLS-1$

            Status errStatus = new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e); //$NON-NLS-1$
            ExceptionDetailsErrorDialog.openError(null, Messages.get().Error, "", errStatus); //$NON-NLS-1$ //$NON-NLS-2$
        }
    }
}