| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.intellij.openapi.actionSystem; |
| |
| import com.intellij.openapi.actionSystem.ex.ActionUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class ActionGroupUtil { |
| private static Presentation getPresentation(AnAction action, Map<AnAction, Presentation> action2presentation) { |
| Presentation presentation = action2presentation.get(action); |
| if (presentation == null) { |
| presentation = action.getTemplatePresentation().clone(); |
| action2presentation.put(action, presentation); |
| } |
| return presentation; |
| } |
| |
| public static boolean isGroupEmpty(@NotNull ActionGroup actionGroup, @NotNull AnActionEvent e) { |
| return isGroupEmpty(actionGroup, e, new HashMap<AnAction, Presentation>()); |
| } |
| |
| private static boolean isGroupEmpty(@NotNull ActionGroup actionGroup, |
| @NotNull AnActionEvent e, |
| @NotNull Map<AnAction, Presentation> action2presentation) { |
| AnAction[] actions = actionGroup.getChildren(e); |
| for (AnAction action : actions) { |
| if (action instanceof Separator) continue; |
| if (isActionEnabledAndVisible(e, action2presentation, action)) { |
| if (action instanceof ActionGroup) { |
| if (!isGroupEmpty((ActionGroup)action, e, action2presentation)) { |
| return false; |
| } |
| // else continue for-loop |
| } |
| else { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| @Nullable |
| public static AnAction getSingleActiveAction(@NotNull ActionGroup actionGroup, @NotNull AnActionEvent e) { |
| List<AnAction> children = getEnabledChildren(actionGroup, e, new HashMap<AnAction, Presentation>()); |
| if (children.size() == 1) { |
| return children.get(0); |
| } |
| return null; |
| } |
| |
| private static List<AnAction> getEnabledChildren(@NotNull ActionGroup actionGroup, |
| @NotNull AnActionEvent e, |
| @NotNull Map<AnAction, Presentation> action2presentation) { |
| List<AnAction> result = new ArrayList<AnAction>(); |
| AnAction[] actions = actionGroup.getChildren(e); |
| for (AnAction action : actions) { |
| if (action instanceof ActionGroup) { |
| if (isActionEnabledAndVisible(e, action2presentation, action)) { |
| result.addAll(getEnabledChildren((ActionGroup)action, e, action2presentation)); |
| } |
| } |
| else if (!(action instanceof Separator)) { |
| if (isActionEnabledAndVisible(e, action2presentation, action)) { |
| result.add(action); |
| } |
| } |
| } |
| return result; |
| } |
| |
| private static boolean isActionEnabledAndVisible(@NotNull final AnActionEvent e, |
| @NotNull final Map<AnAction, Presentation> action2presentation, |
| @NotNull final AnAction action) { |
| Presentation presentation = getPresentation(action, action2presentation); |
| AnActionEvent event = new AnActionEvent(e.getInputEvent(), |
| e.getDataContext(), |
| ActionPlaces.UNKNOWN, |
| presentation, |
| ActionManager.getInstance(), |
| e.getModifiers()); |
| event.setInjectedContext(action.isInInjectedContext()); |
| ActionUtil.performDumbAwareUpdate(action, event, false); |
| |
| return presentation.isEnabled() && presentation.isVisible(); |
| } |
| } |