Examples with HelperFunctionsService eu.esdihumboldt.cst.functions.groovy.helper.HelperFunctionsService used on opensource projects

Example 1 with HelperFunctionsService

use of eu.esdihumboldt.cst.functions.groovy.helper.HelperFunctionsService in project hale by halestudio.

the class PageFunctions method createContents.

/**
 * @see org.eclipse.jface.dialogs.DialogTray#createContents(org.eclipse.swt.widgets.Composite)
 */
@Override
protected Control createContents(Composite parent) {
    Composite comp = new Composite(parent, SWT.NONE);
    GridLayoutFactory.fillDefaults().numColumns(1).applyTo(comp);
    Label label = new Label(comp, SWT.NONE);
    label.setText("Functions Overview");
    label.setFont(JFaceResources.getHeaderFont());
    // tree viwever
    PatternFilter patternFilter = new TreePathPatternFilter();
    patternFilter.setIncludeLeadingWildcard(true);
    final FilteredTree filteredTree = new TreePathFilteredTree(comp, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER, patternFilter, true);
    TreeViewer tree = filteredTree.getViewer();
    tree.setUseHashlookup(true);
    HelperFunctionLabelProvider labelProvider = new HelperFunctionLabelProvider();
    tree.setLabelProvider(labelProvider);
    IContentProvider contentProvider;
    HelperFunctionsService functions = HaleUI.getServiceProvider().getService(HelperFunctionsService.class);
    contentProvider = new TreePathProviderAdapter(new HelperFunctionContentProvider(functions));
    tree.setContentProvider(contentProvider);
    GridDataFactory.fillDefaults().grab(true, true).hint(280, 400).applyTo(filteredTree);
    tree.setComparator(new HelperFunctionComparator());
    tree.setInput(Category.ROOT);
    // Examples
    Label example = new Label(comp, SWT.NONE);
    example.setText("Function documentation");
    try {
        browser = new Browser(comp, SWT.WRAP | SWT.BORDER);
        browser.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(300, 250).create());
    } catch (Throwable e) {
        if (BROWSER_ERROR_REPORTED.compareAndSet(false, true)) {
            log.error("Could not create embedded browser, using text field as fall-back", e);
        }
        textField = new Text(comp, SWT.BORDER | SWT.WRAP | SWT.V_SCROLL);
        textField.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(300, 250).create());
    }
    tree.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            String eg = null;
            HelperFunctionSpecification hfs = null;
            if (!event.getSelection().isEmpty()) {
                TreeSelection treesel = (TreeSelection) event.getSelection();
                TreePath[] paths = treesel.getPaths();
                if (paths != null) {
                    TreePath path = paths[0];
                    for (int i = 0; i < path.getSegmentCount(); i++) {
                        if (path.getSegment(i) instanceof Category) {
                            eg = "Select a function to see its documentation.";
                            if (browser != null) {
                                browser.setText(eg);
                            } else if (textField != null) {
                                textField.setText(eg);
                            }
                        } else if (path.getSegment(i) instanceof HelperFunctionOrCategory) {
                            HelperFunctionOrCategory hfoc = ((HelperFunctionOrCategory) path.getSegment(i));
                            try {
                                hfs = (HelperFunctionSpecification) hfoc.asFunction().getSpec(hfoc.getName());
                            } catch (Exception e) {
                                log.error("There is a problem in retrieving the specification for a helper function.", e);
                            }
                            // displaying the specification
                            if (browser != null) {
                                eg = getFunctionSpecHTML(hfs);
                                browser.setText(eg);
                            } else if (textField != null) {
                                eg = getFunctionSpecText(hfs);
                                textField.setText(eg);
                            }
                        }
                    }
                }
            }
        }
    });
    return comp;
}