Examples with Expression org.eclipse.core.expressions.Expression used on opensource projects

Example 16 with Expression

use of org.eclipse.core.expressions.Expression in project hale by halestudio.

the class ActionUIWizardPage method acceptWizard.

/**
 * @see ViewerWizardSelectionPage#acceptWizard(IWizardNode)
 */
@Override
protected String acceptWizard(IWizardNode wizardNode) {
    if (wizardNode instanceof ActionUIWizardNode) {
        ActionUI actionUI = ((ActionUIWizardNode) wizardNode).getActionUI();
        Expression enabledWhen = actionUI.getEnabledWhen();
        if (enabledWhen == null) {
            return null;
        }
        IEvaluationService ies = PlatformUI.getWorkbench().getService(IEvaluationService.class);
        try {
            EvaluationResult evalResult = enabledWhen.evaluate(ies.getCurrentState());
            if (evalResult == EvaluationResult.FALSE) {
                // disabled
                return actionUI.getDisabledReason();
            }
            // enabled
            return null;
        } catch (CoreException e) {
            String message = "Could not evaluate enabledWhen expression";
            log.error(message, e);
            return message;
        }
    }
    return super.acceptWizard(wizardNode);
}

Example 17 with Expression

use of org.eclipse.core.expressions.Expression in project dbeaver by serge-rider.

the class DebugUIInternals method createShortcutActions.

public static Map<IAction, String> createShortcutActions(Object[] selected, String mode, int accelerator) {
    Map<IAction, String> result = new LinkedHashMap<IAction, String>();
    if (selected == null) {
        return result;
    }
    List<Object> selection = Arrays.asList(selected);
    IEvaluationContext context = DebugUIPlugin.createEvaluationContext(selection);
    context.setAllowPluginActivation(true);
    // $NON-NLS-1$
    context.addVariable("selection", selection);
    List<LaunchShortcutExtension> allShortCuts = DebugUIPlugin.getDefault().getLaunchConfigurationManager().getLaunchShortcuts();
    List<LaunchShortcutExtension> filteredShortCuts = new ArrayList<LaunchShortcutExtension>();
    Iterator<LaunchShortcutExtension> iter = allShortCuts.iterator();
    while (iter.hasNext()) {
        LaunchShortcutExtension ext = iter.next();
        if (WorkbenchActivityHelper.filterItem(ext)) {
            continue;
        }
        try {
            Expression expr = ext.getContextualLaunchEnablementExpression();
            if (ext.evalEnablementExpression(context, expr)) {
                filteredShortCuts.add(ext);
            }
        } catch (CoreException e) {
            IStatus status = new Status(IStatus.ERROR, DebugUIPlugin.getUniqueIdentifier(), // $NON-NLS-1$
            "Launch shortcut '" + ext.getId() + "' enablement expression caused exception. Shortcut was removed.", // $NON-NLS-1$
            e);
            DebugUIPlugin.log(status);
            iter.remove();
        }
    }
    for (LaunchShortcutExtension ext : filteredShortCuts) {
        for (String supported : ext.getModes()) {
            if (supported.equals(mode)) {
                LaunchShortcutAction action = new LaunchShortcutAction(supported, ext);
                // $NON-NLS-1$
                action.setActionDefinitionId(ext.getId() + "." + supported);
                String helpContextId = ext.getHelpContextId();
                if (helpContextId != null) {
                    PlatformUI.getWorkbench().getHelpSystem().setHelp(action, helpContextId);
                }
                StringBuffer label = new StringBuffer();
                if (accelerator >= 0 && accelerator < 10) {
                    // add the numerical accelerator
                    label.append('&');
                    label.append(accelerator);
                    label.append(' ');
                }
                String contextLabel = ext.getContextLabel(supported);
                // replace default action label with context label if
                // specified.
                label.append((contextLabel != null) ? contextLabel : action.getText());
                action.setText(label.toString());
                String category = ext.getCategory();
                result.put(action, category);
                accelerator++;
            }
        }
    }
    return result;
}