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package org.jetbrains.plugins.coursecreator;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.event.EditorFactoryEvent;
import com.intellij.openapi.editor.event.EditorFactoryListener;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.coursecreator.format.*;
public class CCEditorFactoryListener implements EditorFactoryListener {
@Override
public void editorCreated(@NotNull EditorFactoryEvent event) {
Editor editor = event.getEditor();
Project project = editor.getProject();
if (project == null) {
return;
}
VirtualFile virtualFile = FileDocumentManager.getInstance().getFile(editor.getDocument());
if (virtualFile == null) {
return;
}
Course course = CCProjectService.getInstance(project).getCourse();
if (course == null) {
return;
}
final VirtualFile taskDir = virtualFile.getParent();
if (taskDir == null || !taskDir.getName().contains("task")) {
return;
}
final VirtualFile lessonDir = taskDir.getParent();
if (lessonDir == null) return;
final Lesson lesson = course.getLesson(lessonDir.getName());
final Task task = lesson.getTask(taskDir.getName());
final TaskFile taskFile = task.getTaskFile(virtualFile.getName());
TaskFileModificationListener listener = new TaskFileModificationListener(taskFile);
CCProjectService.addDocumentListener(editor.getDocument(), listener);
editor.getDocument().addDocumentListener(listener);
CCProjectService.drawTaskWindows(virtualFile, editor, course);
}
@Override
public void editorReleased(@NotNull EditorFactoryEvent event) {
Editor editor = event.getEditor();
Document document = editor.getDocument();
StudyDocumentListener listener = CCProjectService.getListener(document);
if (listener != null) {
document.removeDocumentListener(listener);
CCProjectService.removeListener(document);
}
editor.getMarkupModel().removeAllHighlighters();
editor.getSelectionModel().removeSelection();
}
private class TaskFileModificationListener extends StudyDocumentListener {
private final TaskFile myTaskFile;
public TaskFileModificationListener(TaskFile taskFile) {
super(taskFile);
myTaskFile = taskFile;
}
@Override
protected void updateTaskWindowLength(CharSequence fragment, TaskWindow taskWindow, int change) {
int newLength = taskWindow.getReplacementLength() + change;
taskWindow.setReplacementLength(newLength <= 0 ? 0 : newLength);
if (fragment.equals("\n")) {
taskWindow.setReplacementLength(taskWindow.getLength() + 1);
}
}
@Override
protected boolean needModify() {
return myTaskFile.isTrackChanges();
}
}
}
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