platform/lang-impl/src/com/intellij/codeInsight/intention/impl/config/IntentionUsagePanel.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
  17 /**
  18  * @author cdr
  19  */
  20 package com.intellij.codeInsight.intention.impl.config;
  21
  22 import com.intellij.openapi.application.ApplicationManager;
  23 import com.intellij.openapi.command.CommandProcessor;
  24 import com.intellij.openapi.editor.*;
  25 import com.intellij.openapi.editor.colors.CodeInsightColors;
  26 import com.intellij.openapi.editor.colors.EditorColorsManager;
  27 import com.intellij.openapi.editor.colors.EditorColorsScheme;
  28 import com.intellij.openapi.editor.ex.EditorEx;
  29 import com.intellij.openapi.editor.highlighter.EditorHighlighterFactory;
  30 import com.intellij.openapi.editor.markup.TextAttributes;
  31 import com.intellij.openapi.fileTypes.FileType;
  32 import com.intellij.openapi.util.text.StringUtil;
  33 import com.intellij.util.ui.RangeBlinker;
  34 import org.jetbrains.annotations.NonNls;
  35
  36 import javax.swing.*;
  37 import java.awt.*;
  38 import java.util.ArrayList;
  39 import java.util.List;
  40
  41 class IntentionUsagePanel extends JPanel{
  42   private final EditorEx myEditor;
  43   @NonNls private static final String SPOT_MARKER = "spot";
  44   private final RangeBlinker myRangeBlinker;
  45
  46   public IntentionUsagePanel() {
  47     myEditor = (EditorEx)createEditor("", 10, 3, -1);
  48     setLayout(new BorderLayout());
  49     add(myEditor.getComponent(), BorderLayout.CENTER);
  50     TextAttributes blinkAttributes = EditorColorsManager.getInstance().getGlobalScheme().getAttributes(CodeInsightColors.BLINKING_HIGHLIGHTS_ATTRIBUTES);
  51     myRangeBlinker = new RangeBlinker(myEditor, blinkAttributes, Integer.MAX_VALUE);
  52   }
  53
  54   public void reset(final String usageText, final FileType fileType) {
  55     reinitViews();
  56     SwingUtilities.invokeLater(new Runnable() {
  57       public void run() {
  58         CommandProcessor.getInstance().runUndoTransparentAction(new Runnable() {
  59           public void run() {
  60             ApplicationManager.getApplication().runWriteAction(new Runnable() {
  61               public void run() {
  62                 configureByText(usageText, fileType);
  63               }
  64             });
  65           }
  66         });
  67       }
  68     });
  69   }
  70
  71   private void configureByText(final String usageText, FileType fileType) {
  72     Document document = myEditor.getDocument();
  73     String text = StringUtil.convertLineSeparators(usageText);
  74     document.replaceString(0, document.getTextLength(), text);
  75     final EditorColorsScheme scheme = EditorColorsManager.getInstance().getGlobalScheme();
  76     myEditor.setHighlighter(EditorHighlighterFactory.getInstance().createEditorHighlighter(fileType, scheme, null));
  77     setupSpots(document);
  78   }
  79
  80   private void setupSpots(Document document) {
  81     List<RangeMarker> markers = new ArrayList<RangeMarker>();
  82     while (true) {
  83       String text = document.getText();
  84       int spotStart = text.indexOf("<" + SPOT_MARKER + ">");
  85       if (spotStart < 0) break;
  86       int spotEnd = text.indexOf("</" + SPOT_MARKER + ">", spotStart);
  87       if (spotEnd < 0) break;
  88
  89       document.deleteString(spotEnd, spotEnd + SPOT_MARKER.length() + 3);
  90       document.deleteString(spotStart, spotStart + SPOT_MARKER.length() + 2);
  91       final RangeMarker spotMarker = document.createRangeMarker(spotStart, spotEnd - SPOT_MARKER.length() - 2);
  92       if (spotMarker == null) {
  93         break;
  94       }
  95       else {
  96         markers.add(spotMarker);
  97       }
  98     }
  99     myRangeBlinker.resetMarkers(markers);
 100     if (!markers.isEmpty()) {
 101       myRangeBlinker.startBlinking();
 102     }
 103   }
 104
 105   public void dispose() {
 106     myRangeBlinker.stopBlinking();
 107     EditorFactory editorFactory = EditorFactory.getInstance();
 108     editorFactory.releaseEditor(myEditor);
 109   }
 110
 111   private void reinitViews() {
 112     myEditor.reinitSettings();
 113     myEditor.getMarkupModel().removeAllHighlighters();
 114   }
 115
 116   private static Editor createEditor(String text, int column, int line, int selectedLine) {
 117     EditorFactory editorFactory = EditorFactory.getInstance();
 118     Document editorDocument = editorFactory.createDocument(text);
 119     EditorEx editor = (EditorEx)editorFactory.createViewer(editorDocument);
 120     EditorColorsScheme scheme = EditorColorsManager.getInstance().getGlobalScheme();
 121     editor.setColorsScheme(scheme);
 122     EditorSettings settings = editor.getSettings();
 123     settings.setWhitespacesShown(true);
 124     settings.setLineMarkerAreaShown(false);
 125     settings.setFoldingOutlineShown(false);
 126     settings.setAdditionalColumnsCount(0);
 127     settings.setAdditionalLinesCount(0);
 128     settings.setRightMarginShown(true);
 129     settings.setRightMargin(60);
 130
 131     LogicalPosition pos = new LogicalPosition(line, column);
 132     editor.getCaretModel().moveToLogicalPosition(pos);
 133     if (selectedLine >= 0) {
 134       editor.getSelectionModel().setSelection(editorDocument.getLineStartOffset(selectedLine),
 135                                               editorDocument.getLineEndOffset(selectedLine));
 136     }
 137
 138     return editor;
 139   }
 140 }
 141