| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.netbeans.modules.css.visual; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.concurrent.atomic.AtomicReference; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.swing.JEditorPane; |
| import javax.swing.SwingUtilities; |
| import org.netbeans.api.editor.mimelookup.MimeRegistration; |
| import org.netbeans.modules.css.lib.api.CssParserResult; |
| import org.netbeans.modules.css.model.api.Model; |
| import org.netbeans.modules.css.model.api.ModelVisitor; |
| import org.netbeans.modules.css.model.api.Rule; |
| import org.netbeans.modules.css.model.api.StyleSheet; |
| import org.netbeans.modules.css.visual.api.CssStylesTC; |
| import org.netbeans.modules.css.visual.api.RuleEditorController; |
| import org.netbeans.modules.parsing.api.Snapshot; |
| import org.netbeans.modules.parsing.spi.*; |
| import org.openide.cookies.EditorCookie; |
| import org.openide.filesystems.FileObject; |
| import org.openide.loaders.DataObject; |
| import org.openide.loaders.DataObjectNotFoundException; |
| import org.openide.text.NbDocument; |
| import org.openide.windows.WindowManager; |
| |
| /** |
| * |
| * @author mfukala@netbeans.org |
| */ |
| public final class CssCaretAwareSourceTask extends ParserResultTask<CssParserResult> { |
| |
| private static final Logger LOG = Logger.getLogger("rule.editor"); |
| private static final String CSS_MIMETYPE = "text/css"; //NOI18N |
| private boolean cancelled; |
| |
| @Override |
| public int getPriority() { |
| return 5000; //low priority |
| } |
| |
| @Override |
| public Class<? extends Scheduler> getSchedulerClass() { |
| return Scheduler.CURSOR_SENSITIVE_TASK_SCHEDULER; |
| } |
| |
| @Override |
| public void cancel() { |
| cancelled = true; |
| } |
| |
| @Override |
| public void run(final CssParserResult result, SchedulerEvent event) { |
| final FileObject file = result.getSnapshot().getSource().getFileObject(); |
| if (file == null) { |
| LOG.log(Level.FINE, "run() - file is null."); // NOI18N |
| return ; |
| } |
| final String mimeType = file.getMIMEType(); |
| |
| LOG.log(Level.FINER, "run(), file: {0}", new Object[]{file}); |
| |
| if(!mimeType.equals("text/css")) { |
| LOG.log(Level.FINE, "ignoring non-pure (text/css) file, actual mimetype is {0}", mimeType); |
| return ; |
| } |
| |
| cancelled = false; |
| |
| final int caretOffset; |
| if (event == null) { |
| caretOffset = -1; |
| } else { |
| if (event instanceof CursorMovedSchedulerEvent) { |
| caretOffset = ((CursorMovedSchedulerEvent) event).getCaretOffset(); |
| } else { |
| LOG.log(Level.FINE, "run() - !(event instanceof CursorMovedSchedulerEvent)"); |
| caretOffset = -1; |
| } |
| } |
| |
| final Model model = Model.getModel(result); //do this outside EDT |
| |
| SwingUtilities.invokeLater(new Runnable() { |
| @Override |
| public void run() { |
| runInEDT(result.getSnapshot(), model, file, mimeType, caretOffset); |
| } |
| }); |
| } |
| |
| private void runInEDT(Snapshot snapshot, Model model, final FileObject file, String mimeType, int caretOffset) { |
| LOG.log(Level.FINER, "runInEDT(), file: {0}, caret: {1}", new Object[]{file, caretOffset}); |
| |
| if (cancelled) { |
| LOG.log(Level.FINER, "cancelled"); |
| return; |
| } |
| |
| if (caretOffset == -1) { |
| try { |
| //dirty workaround |
| DataObject dobj = DataObject.find(file); |
| EditorCookie ec = dobj.getLookup().lookup(EditorCookie.class); |
| if (ec != null) { |
| JEditorPane pane = NbDocument.findRecentEditorPane(ec); |
| if (pane != null) { |
| caretOffset = pane.getCaretPosition(); |
| } |
| } |
| |
| } catch (DataObjectNotFoundException ex) { |
| //possibly deleted file, give up |
| return; |
| |
| } |
| |
| LOG.log(Level.INFO, "workarounded caret offset: {0}", caretOffset); |
| } |
| |
| |
| //find rule corresponding to the offset |
| Rule rule = findRuleAtOffset(snapshot, model, caretOffset); |
| //>>hack, remove once the css.lib css grammar gets finalized |
| if(rule != null && rule.getSelectorsGroup() == null) { |
| rule = null; |
| } |
| //<<hack |
| |
| |
| if(rule != null) { |
| //check whether the rule is virtual |
| if(snapshot.getOriginalOffset(rule.getSelectorsGroup().getStartOffset()) == -1) { |
| //virtual selector created for html source element with class or id attribute |
| LOG.log(Level.FINER, "the found rule is virtual, exiting w/o change of the RuleEditor", caretOffset); |
| return ; |
| } |
| } |
| |
| if (!mimeType.equals("text/css")) { |
| //if not a css file, |
| //update the rule editor only if there's a rule in an embedded css code |
| if (rule == null) { |
| LOG.log(Level.FINER, "not a css file and rule not found at {0} offset, exiting w/o change of the RuleEditor", caretOffset); |
| return; |
| } |
| } |
| |
| final CssStylesTC cssStylesTC = (CssStylesTC) WindowManager.getDefault().findTopComponent(CssStylesTC.ID); |
| if (cssStylesTC == null) { |
| return; |
| } |
| |
| //update the RuleEditor TC name |
| RuleEditorController controller = cssStylesTC.getRuleEditorController(); |
| LOG.log(Level.FINER, "SourceTask: calling controller.setModel({0})", model); |
| controller.setModel(model); |
| |
| if (rule == null) { |
| controller.setNoRuleState(); |
| } else { |
| controller.setRule(rule); |
| } |
| } |
| |
| private Rule findRuleAtOffset(final Snapshot snapshot, Model model, int documentOffset) { |
| final int astOffset = snapshot.getEmbeddedOffset(documentOffset); |
| if (astOffset == -1) { |
| return null; |
| } |
| final AtomicReference<Rule> ruleRef = new AtomicReference<Rule>(); |
| model.runReadTask(new Model.ModelTask() { |
| @Override |
| public void run(StyleSheet styleSheet) { |
| styleSheet.accept(new ModelVisitor.Adapter() { |
| @Override |
| public void visitRule(Rule rule) { |
| if (cancelled) { |
| return; |
| } |
| if (astOffset >= rule.getStartOffset()) { |
| if(astOffset <= rule.getEndOffset()) { |
| //exactly in the rule or at its boundaries |
| ruleRef.set(rule); |
| } else { |
| //behind the rule close curly bracket. |
| //if the offset is at the same line as the rule |
| //end and there're only WS between, |
| //activate the rule |
| CharSequence source = snapshot.getText(); |
| |
| //weird - looks like parsing.api bug - the astoffset may point beond the snapshot's length?!?!? |
| int adjustedAstOffset = Math.min(source.length(), astOffset); |
| for(int i = adjustedAstOffset - 1; i >= 0; i--) { |
| if(i == rule.getEndOffset()) { |
| ruleRef.set(rule); |
| return ; |
| } |
| char c = source.charAt(i); |
| if(!(c == ' ' || c == '\t')) { |
| break; //some non-ws text //todo fix comments |
| } |
| if(c == '\n') { |
| break; |
| } |
| } |
| } |
| } |
| } |
| }); |
| |
| } |
| }); |
| return ruleRef.get(); |
| |
| } |
| |
| @MimeRegistration(mimeType = "text/css", service = TaskFactory.class) |
| public static class Factory extends TaskFactory { |
| |
| @Override |
| public Collection<? extends SchedulerTask> create(Snapshot snapshot) { |
| String mimeType = snapshot.getMimeType(); |
| |
| if (mimeType.equals(CSS_MIMETYPE)) { //NOI18N |
| return Collections.singletonList(new CssCaretAwareSourceTask()); |
| } else { |
| return Collections.emptyList(); |
| } |
| } |
| } |
| } |