platform/platform-impl/src/com/intellij/ide/actions/TabNavigationActionBase.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.ide.actions;
  17
  18 import com.intellij.openapi.actionSystem.*;
  19 import com.intellij.openapi.diagnostic.Logger;
  20 import com.intellij.openapi.fileEditor.ex.FileEditorManagerEx;
  21 import com.intellij.openapi.fileEditor.impl.EditorWindow;
  22 import com.intellij.openapi.project.DumbAware;
  23 import com.intellij.openapi.project.Project;
  24 import com.intellij.openapi.vfs.VirtualFile;
  25 import com.intellij.openapi.wm.ToolWindowManager;
  26 import com.intellij.ui.content.ContentManager;
  27 import com.intellij.util.ArrayUtil;
  28
  29 abstract class TabNavigationActionBase extends AnAction implements DumbAware {
  30   private static final Logger LOG = Logger.getInstance("#com.intellij.ide.actions.TabNavigationActionBase");
  31
  32   private final int myDir;
  33
  34   TabNavigationActionBase (final int dir) {
  35     LOG.assertTrue (dir == 1 || dir == -1);
  36     myDir = dir;
  37   }
  38
  39   public void actionPerformed(AnActionEvent e) {
  40     DataContext dataContext = e.getDataContext();
  41     Project project = PlatformDataKeys.PROJECT.getData(dataContext);
  42     if (project == null) {
  43       return;
  44     }
  45
  46     ToolWindowManager windowManager = ToolWindowManager.getInstance(project);
  47
  48     if (windowManager.isEditorComponentActive()) {
  49       doNavigate(dataContext, project);
  50       return;
  51     }
  52
  53     ContentManager contentManager = PlatformDataKeys.NONEMPTY_CONTENT_MANAGER.getData(dataContext);
  54     if (contentManager == null) return;
  55     doNavigate(contentManager);
  56   }
  57
  58   public void update(AnActionEvent event){
  59     Presentation presentation = event.getPresentation();
  60     DataContext dataContext = event.getDataContext();
  61     Project project = PlatformDataKeys.PROJECT.getData(dataContext);
  62     presentation.setEnabled(false);
  63     if (project == null) {
  64       return;
  65     }
  66     final ToolWindowManager windowManager = ToolWindowManager.getInstance(project);
  67     if (windowManager.isEditorComponentActive()) {
  68       final FileEditorManagerEx editorManager = FileEditorManagerEx.getInstanceEx(project);
  69       EditorWindow currentWindow = EditorWindow.DATA_KEY.getData(dataContext);
  70       if (currentWindow == null){
  71         editorManager.getCurrentWindow ();
  72       }
  73       if (currentWindow != null) {
  74         final VirtualFile[] files = currentWindow.getFiles();
  75         presentation.setEnabled(files.length > 1);
  76       }
  77       return;
  78     }
  79
  80     ContentManager contentManager = PlatformDataKeys.NONEMPTY_CONTENT_MANAGER.getData(dataContext);
  81     presentation.setEnabled(contentManager != null && contentManager.getContentCount() > 1 && contentManager.isSingleSelection());
  82   }
  83
  84   private void doNavigate(ContentManager contentManager) {
  85     if (myDir == -1) {
  86       contentManager.selectPreviousContent();
  87     }
  88     else {
  89       contentManager.selectNextContent();
  90     }
  91   }
  92
  93   private void doNavigate(DataContext dataContext, Project project) {
  94     VirtualFile selectedFile = PlatformDataKeys.VIRTUAL_FILE.getData(dataContext);
  95     navigateImpl(dataContext, project, selectedFile, myDir);
  96   }
  97
  98   public static void navigateImpl(final DataContext dataContext, Project project, VirtualFile selectedFile, final int dir) {
  99     LOG.assertTrue (dir == 1 || dir == -1);
 100     final FileEditorManagerEx editorManager = FileEditorManagerEx.getInstanceEx(project);
 101     EditorWindow currentWindow = EditorWindow.DATA_KEY.getData(dataContext);
 102     if (currentWindow == null){
 103       currentWindow = editorManager.getCurrentWindow ();
 104     }
 105     final VirtualFile[] files = currentWindow.getFiles();
 106     int index = ArrayUtil.find(files, selectedFile);
 107     LOG.assertTrue(index != -1);
 108     editorManager.openFile(files[(index + files.length + dir) % files.length], true);
 109   }
 110
 111 }