| package org.eclipse.dltk.debug.ui.handlers; |
| |
| import java.util.Map; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.model.IDebugTarget; |
| import org.eclipse.dltk.debug.core.model.IScriptDebugTarget; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.commands.ICommandService; |
| import org.eclipse.ui.commands.IElementUpdater; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| import org.eclipse.ui.menus.UIElement; |
| |
| /** |
| * Abstract handler implementation that can be used to toggle the display of |
| * debugging variables. |
| */ |
| abstract class AbstractToggleVariableHandler extends AbstractHandler |
| implements IElementUpdater { |
| |
| /* |
| * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core. |
| * commands.ExecutionEvent) |
| */ |
| public final Object execute(ExecutionEvent event) |
| throws ExecutionException { |
| toggleVariableDisplay(); |
| updateDebugTargets(); |
| |
| // refresh the ui elements |
| IWorkbenchWindow window = HandlerUtil |
| .getActiveWorkbenchWindowChecked(event); |
| ICommandService service = window.getService(ICommandService.class); |
| service.refreshElements(event.getCommand().getId(), null); |
| |
| return null; |
| } |
| |
| /* |
| * @see |
| * org.eclipse.ui.commands.IElementUpdater#updateElement(org.eclipse.ui. |
| * menus.UIElement, java.util.Map) |
| */ |
| public void updateElement(UIElement element, Map parameters) { |
| element.setChecked(isVariableDisplayEnabled()); |
| } |
| |
| /** |
| * Returns the debug model id for the given script language |
| */ |
| protected abstract String getModelId(); |
| |
| /** |
| * Returns the preference store to store the variable display settings |
| * under. |
| */ |
| protected abstract IPreferenceStore getPreferenceStore(); |
| |
| /** |
| * Returns the preference key used to store the variable display setting. |
| */ |
| protected abstract String getVariableDisplayPreferenceKey(); |
| |
| /** |
| * Toggle the variable display value the subclass is responsible for |
| * handling. |
| * |
| * @param target |
| * script debug target |
| * @param enabled |
| * <code>true</code> if the variable should be displayed, |
| * <code>false</code> otherwise. |
| */ |
| protected abstract void toggleVariableDisplay(IScriptDebugTarget target, |
| boolean enabled); |
| |
| private boolean isVariableDisplayEnabled() { |
| return getPreferenceStore() |
| .getBoolean(getVariableDisplayPreferenceKey()); |
| } |
| |
| private boolean matchesModelId(IScriptDebugTarget target) { |
| return getModelId().equals(target.getModelIdentifier()); |
| } |
| |
| private void toggleVariableDisplay() { |
| IPreferenceStore store = getPreferenceStore(); |
| String key = getVariableDisplayPreferenceKey(); |
| |
| boolean value = store.getBoolean(key); |
| store.setValue(key, !value); |
| } |
| |
| private void updateDebugTargets() { |
| IDebugTarget[] targets = DebugPlugin.getDefault().getLaunchManager() |
| .getDebugTargets(); |
| |
| for (int i = 0; i < targets.length; i++) { |
| if (!(targets[i] instanceof IScriptDebugTarget)) { |
| continue; |
| } |
| |
| IScriptDebugTarget target = (IScriptDebugTarget) targets[i]; |
| if (target.isTerminated() || !matchesModelId(target)) { |
| continue; |
| } |
| |
| toggleVariableDisplay(target, isVariableDisplayEnabled()); |
| } |
| } |
| } |