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

   1
   2 /*
   3  * Copyright 2000-2009 JetBrains s.r.o.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  * http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17 package com.intellij.ide.actions;
  18
  19 import com.intellij.openapi.actionSystem.*;
  20 import com.intellij.openapi.editor.markup.EffectType;
  21 import com.intellij.openapi.editor.markup.TextAttributes;
  22 import com.intellij.openapi.fileEditor.FileEditorManager;
  23 import com.intellij.openapi.fileEditor.ex.FileEditorProviderManager;
  24 import com.intellij.openapi.fileEditor.impl.EditorHistoryManager;
  25 import com.intellij.openapi.keymap.KeymapManager;
  26 import com.intellij.openapi.project.DumbAware;
  27 import com.intellij.openapi.project.Project;
  28 import com.intellij.openapi.ui.popup.PopupChooserBuilder;
  29 import com.intellij.openapi.util.Iconable;
  30 import com.intellij.openapi.vcs.FileStatus;
  31 import com.intellij.openapi.vcs.FileStatusManager;
  32 import com.intellij.openapi.vfs.VirtualFile;
  33 import com.intellij.ui.ColoredListCellRenderer;
  34 import com.intellij.ui.LightColors;
  35 import com.intellij.ui.SimpleTextAttributes;
  36 import com.intellij.util.ArrayUtil;
  37 import com.intellij.util.Function;
  38 import com.intellij.util.IconUtil;
  39
  40 import javax.swing.*;
  41 import javax.swing.event.ListSelectionEvent;
  42 import javax.swing.event.ListSelectionListener;
  43 import java.awt.*;
  44 import java.awt.event.KeyAdapter;
  45 import java.awt.event.KeyEvent;
  46 import java.io.File;
  47
  48 public abstract class BaseShowRecentFilesAction extends AnAction implements DumbAware {
  49   private static final Color BORDER_COLOR = new Color(0x87, 0x87, 0x87);
  50
  51   public void actionPerformed(AnActionEvent e) {
  52     show(PlatformDataKeys.PROJECT.getData(e.getDataContext()));
  53   }
  54
  55   public void update(AnActionEvent event){
  56     Presentation presentation = event.getPresentation();
  57     Project project = PlatformDataKeys.PROJECT.getData(event.getDataContext());
  58     presentation.setEnabled(project != null);
  59   }
  60
  61   private void show(final Project project){
  62     final DefaultListModel model = new DefaultListModel();
  63
  64     VirtualFile[] selectedFiles = FileEditorManager.getInstance(project).getSelectedFiles();
  65     VirtualFile[] files = filesToShow(project);
  66     FileEditorProviderManager editorProviderManager = FileEditorProviderManager.getInstance();
  67
  68     for(int i=files.length-1; i>= 0; i--){ // reverse order of files
  69       VirtualFile file = files[i];
  70       if(ArrayUtil.find(selectedFiles, file) == -1 && editorProviderManager.getProviders(project, file).length > 0){
  71         // 1. do not put currently selected file
  72         // 2. do not include file with no corresponding editor providers
  73         model.addElement(file);
  74       }
  75     }
  76
  77     final JLabel pathLabel = new JLabel(" ");
  78     pathLabel.setHorizontalAlignment(SwingConstants.RIGHT);
  79
  80     if (true /*SystemInfo.isMac*/) {
  81       final Font font = pathLabel.getFont();
  82       pathLabel.setFont(font.deriveFont((float)10));
  83     }
  84
  85     final JList list = new JList(model);
  86     list.addKeyListener(
  87       new KeyAdapter() {
  88         public void keyPressed(KeyEvent e) {
  89           if (e.getKeyCode() == KeyEvent.VK_DELETE) {
  90             int index = list.getSelectedIndex();
  91             if (index == -1 || index >= list.getModel().getSize()){
  92               return;
  93             }
  94             Object[] values = list.getSelectedValues();
  95             for (Object value : values) {
  96               VirtualFile file = (VirtualFile) value;
  97               model.removeElement(file);
  98               if (model.getSize() > 0) {
  99                 if (model.getSize() == index) {
 100                   list.setSelectedIndex(model.getSize() - 1);
 101                 } else if (model.getSize() > index) {
 102                   list.setSelectedIndex(index);
 103                 }
 104               } else {
 105                 list.clearSelection();
 106               }
 107               EditorHistoryManager.getInstance(project).removeFile(file);
 108             }
 109           }
 110         }
 111       }
 112     );
 113
 114     list.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
 115       private String getTitle2Text(String fullText) {
 116         int labelWidth = pathLabel.getWidth();
 117         if (fullText == null || fullText.length() == 0) return " ";
 118         while (pathLabel.getFontMetrics(pathLabel.getFont()).stringWidth(fullText) > labelWidth) {
 119           int sep = fullText.indexOf(File.separatorChar, 4);
 120           if (sep < 0) return fullText;
 121           fullText = "..." + fullText.substring(sep);
 122         }
 123
 124         return fullText;
 125       }
 126
 127       public void valueChanged(final ListSelectionEvent e) {
 128         //noinspection SSBasedInspection
 129         SwingUtilities.invokeLater(new Runnable() {
 130           public void run() {
 131             updatePathLabel();
 132           }
 133         });
 134       }
 135
 136       private void updatePathLabel() {
 137         final Object[] values = list.getSelectedValues();
 138         if (values != null && values.length == 1) {
 139           final VirtualFile parent = ((VirtualFile)values[0]).getParent();
 140           if (parent != null) {
 141             pathLabel.setText(getTitle2Text(parent.getPresentableUrl()));
 142           }
 143           else {
 144             pathLabel.setText(" ");
 145           }
 146         }
 147         else {
 148           pathLabel.setText(" ");
 149         }
 150       }
 151     });
 152
 153     Runnable runnable = new Runnable() {
 154       public void run() {
 155         Object[] values = list.getSelectedValues();
 156         for (Object value : values) {
 157           VirtualFile file = (VirtualFile) value;
 158           FileEditorManager.getInstance(project).openFile(file, true);
 159         }
 160       }
 161     };
 162
 163     if (list.getModel().getSize() == 0) {
 164       list.clearSelection();
 165     }
 166
 167     list.setCellRenderer(new RecentFilesRenderer(project));
 168
 169     /*
 170     TODO:
 171     if (model.getSize() > 0) {
 172       Dimension listPreferredSize = list.getPreferredSize();
 173       list.setVisibleRowCount(0);
 174       Dimension viewPreferredSize = new Dimension(listPreferredSize.width, Math.min(listPreferredSize.height, r.height - 20));
 175       ((JViewport)list.getParent()).setPreferredSize(viewPreferredSize);
 176     }
 177     */
 178
 179     JPanel footerPanel = new JPanel(new BorderLayout()) {
 180       @Override
 181       protected void paintComponent(Graphics g) {
 182         super.paintComponent(g);
 183         g.setColor(BORDER_COLOR);
 184         g.drawLine(0, 0, getWidth(), 0);
 185       }
 186     };
 187
 188     footerPanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
 189     footerPanel.add(pathLabel);
 190
 191     new PopupChooserBuilder(list).
 192       setTitle(getTitle()).
 193       setMovable(true).
 194       setSouthComponent(footerPanel).
 195       setItemChoosenCallback(runnable).
 196       addAdditionalChooseKeystroke(getAdditionalSelectKeystroke()).
 197       setFilteringEnabled(new Function<Object, String>() {
 198         public String fun(Object o) {
 199           return o instanceof VirtualFile ? ((VirtualFile)o).getName() : "";
 200         }
 201       }).
 202       createPopup().showCenteredInCurrentWindow(project);
 203   }
 204
 205   protected abstract String getTitle();
 206
 207   protected abstract VirtualFile[] filesToShow(Project project);
 208
 209   private static KeyStroke getAdditionalSelectKeystroke() {
 210     Shortcut[] shortcuts= KeymapManager.getInstance().getActiveKeymap().getShortcuts(IdeActions.ACTION_EDIT_SOURCE);
 211     for (Shortcut shortcut : shortcuts) {
 212       if (shortcut instanceof KeyboardShortcut) {
 213         return ((KeyboardShortcut) shortcut).getFirstKeyStroke();
 214       }
 215     }
 216     return null;
 217   }
 218
 219   private static class RecentFilesRenderer extends ColoredListCellRenderer {
 220     private final Project myProject;
 221     public RecentFilesRenderer(Project project) {
 222       myProject = project;
 223     }
 224
 225     protected void customizeCellRenderer(JList list, Object value, int index, boolean selected, boolean hasFocus) {
 226       if (value instanceof VirtualFile) {
 227         VirtualFile virtualFile = (VirtualFile)value;
 228         String name = virtualFile.getPresentableName();
 229         setIcon(IconUtil.getIcon(virtualFile, Iconable.ICON_FLAG_READ_STATUS, myProject));
 230
 231         FileStatus fileStatus = FileStatusManager.getInstance(myProject).getStatus(virtualFile);
 232         TextAttributes attributes = new TextAttributes(fileStatus.getColor(), null , null, EffectType.LINE_UNDERSCORE,
 233                                                        Font.PLAIN);
 234         append(name, SimpleTextAttributes.fromTextAttributes(attributes));
 235
 236         if (!selected && FileEditorManager.getInstance(myProject).isFileOpen(virtualFile)) {
 237           setBackground(LightColors.SLIGHTLY_GREEN);
 238         }
 239       }
 240     }
 241   }
 242 }