| /* |
| * Copyright 2002-2005 Sascha Weinreuter |
| * |
| * 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 org.intellij.plugins.xpathView.util; |
| |
| import com.intellij.codeInsight.highlighting.HighlightManager; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.LogicalPosition; |
| import com.intellij.openapi.editor.markup.RangeHighlighter; |
| import com.intellij.openapi.editor.markup.TextAttributes; |
| import com.intellij.openapi.fileTypes.FileTypeManager; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.codeStyle.CodeStyleSettingsManager; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.intellij.plugins.xpathView.Config; |
| |
| import java.util.*; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class HighlighterUtil { |
| private static final Key<List<RangeHighlighter>> HIGHLIGHTERS_KEY = Key.create("XPATH_HIGHLIGHTERS"); |
| |
| private HighlighterUtil() { |
| } |
| |
| /** |
| * Clear all highlighters in an editor that are set up by this class |
| * |
| * @param editor the editor |
| */ |
| public static void clearHighlighters(final Editor editor) { |
| final List<RangeHighlighter> hl = editor.getUserData(HIGHLIGHTERS_KEY); |
| if (hl != null) { |
| if (purgeInvalidHighlighters(editor, hl)) { |
| final HighlightManager mgr = HighlightManager.getInstance(editor.getProject()); |
| for (Iterator<RangeHighlighter> iterator = hl.iterator(); iterator.hasNext();) { |
| RangeHighlighter highlighter = iterator.next(); |
| mgr.removeSegmentHighlighter(editor, highlighter); |
| iterator.remove(); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Add a new highlighter to an editor |
| * |
| * @param editor the editor |
| * @param highlighter the highlighter |
| */ |
| public static void addHighlighter(Editor editor, RangeHighlighter highlighter) { |
| List<RangeHighlighter> hl = editor.getUserData(HIGHLIGHTERS_KEY); |
| if (hl == null) { |
| hl = new LinkedList<RangeHighlighter>(); |
| editor.putUserData(HIGHLIGHTERS_KEY, hl); |
| } else { |
| purgeInvalidHighlighters(editor, hl); |
| } |
| hl.add(highlighter); |
| } |
| |
| public static void removeHighlighter(Editor editor, RangeHighlighter h) { |
| final HighlightManager mgr = HighlightManager.getInstance(editor.getProject()); |
| mgr.removeSegmentHighlighter(editor, h); |
| } |
| |
| public static boolean hasHighlighters(Editor editor) { |
| final List<RangeHighlighter> hl = editor.getUserData(HIGHLIGHTERS_KEY); |
| if (hl != null) { |
| if (hl.isEmpty()) { |
| return false; |
| } |
| return purgeInvalidHighlighters(editor, hl); |
| } |
| return false; |
| } |
| |
| @SuppressWarnings({"unchecked", "RawUseOfParameterizedType"}) |
| private static boolean purgeInvalidHighlighters(Editor editor, List<RangeHighlighter> hl) { |
| final Set set = ContainerUtil.newIdentityTroveSet(Arrays.asList(editor.getMarkupModel().getAllHighlighters())); |
| boolean hasHighlighter = false; |
| for (Iterator<RangeHighlighter> iterator = hl.iterator(); iterator.hasNext();) { |
| final RangeHighlighter h = iterator.next(); |
| if (!h.isValid() || !set.contains(h)) { |
| iterator.remove(); |
| } else { |
| hasHighlighter = true; |
| } |
| } |
| return hasHighlighter; |
| } |
| |
| public static List<RangeHighlighter> getHighlighters(Editor editor) { |
| if (!hasHighlighters(editor)) { |
| //noinspection unchecked |
| return Collections.emptyList(); |
| } else { |
| return editor.getUserData(HIGHLIGHTERS_KEY); |
| } |
| } |
| |
| /** |
| * Highlight a node in the editor. |
| * @param editor the editor |
| * @param node the node to be highlighted |
| * @param attrs the attributes for the highlighter |
| * @param cfg the plugin configuration |
| * @return The created highlighter object |
| */ |
| public static RangeHighlighter highlightNode(Editor editor, final PsiElement node, TextAttributes attrs, Config cfg) { |
| TextRange range; |
| final PsiElement realElement; |
| if ((node instanceof XmlTag) && cfg.isHighlightStartTagOnly()) { |
| XmlTag tag = (XmlTag)node; |
| realElement = MyPsiUtil.getNameElement(tag); |
| range = realElement.getTextRange(); |
| } else { |
| range = node.getTextRange(); |
| realElement = node; |
| } |
| |
| // TODO: break at line boundaries |
| final ArrayList<RangeHighlighter> highlighters = new ArrayList<RangeHighlighter>(1); |
| final HighlightManager mgr = HighlightManager.getInstance(editor.getProject()); |
| mgr.addRangeHighlight(editor, range.getStartOffset(), range.getEndOffset(), attrs, false, highlighters); |
| final RangeHighlighter rangeHighlighter = highlighters.get(0); |
| |
| if (cfg.isAddErrorStripe()) { |
| rangeHighlighter.setErrorStripeMarkColor(attrs.getBackgroundColor()); |
| rangeHighlighter.setErrorStripeTooltip(formatTooltip(editor, realElement)); |
| } else { |
| rangeHighlighter.setErrorStripeMarkColor(null); |
| } |
| return rangeHighlighter; |
| } |
| |
| private static Object formatTooltip(Editor e, PsiElement element) { |
| if (!(element instanceof XmlTag)) { |
| final String text = element.getText(); |
| if ((text == null || text.length() == 0) && MyPsiUtil.isNameElement(element)) { |
| final XmlTag tag = PsiTreeUtil.getParentOfType(element, XmlTag.class, true); |
| if (tag != null) { |
| return tag.getName(); |
| } |
| } |
| return text; |
| } |
| // have to use html/preformatted or else the tooltip gets formatted totally weird. |
| |
| final CodeStyleSettingsManager instance = CodeStyleSettingsManager.getInstance(element.getProject()); |
| final int tabSize = instance.getCurrentSettings().getTabSize(FileTypeManager.getInstance().getFileTypeByExtension("xml")); |
| final char[] spaces = new char[tabSize]; |
| for (int i = 0; i < spaces.length; i++) { |
| spaces[i] = ' '; |
| } |
| |
| final int textOffset = element.getTextOffset(); |
| final int lineStartOffset = e.logicalPositionToOffset(new LogicalPosition(e.offsetToLogicalPosition(textOffset).line, 0)); |
| final CharSequence chars = e.getDocument().getCharsSequence(); |
| int indent = 0; |
| for (int i=lineStartOffset; i<textOffset; i++) { |
| if (chars.charAt(i) == ' ') { |
| indent++; |
| } else if (chars.charAt(i) == '\t') { |
| indent += ((indent + tabSize) / tabSize) * tabSize - indent; |
| } else { |
| break; |
| } |
| } |
| |
| final String text = element.getText().replaceAll("\\t", new String(spaces)).replaceAll("&", "&").replaceAll("<", "<"); |
| final Pattern indentPattern = Pattern.compile("^(\\s*).+"); |
| |
| final StringBuilder sb = new StringBuilder("<html><pre>"); |
| final String[] lines = text.split("\\n"); |
| for (String line : lines) { |
| final Matcher matcher = indentPattern.matcher(line); |
| if (matcher.matches()) { |
| // strip off the amount of spaces the top-level element is indented with |
| line = line.substring(Math.min(matcher.group(1).length(), indent)); |
| } |
| sb.append(line).append("\n"); |
| } |
| return sb.append("</pre></html>").toString(); |
| } |
| } |