Java tutorial
/* * Copyright 2000-2014 JetBrains s.r.o. * * 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 com.jetbrains.edu.coursecreator.actions.taskFile; import com.intellij.openapi.actionSystem.AnActionEvent; import com.intellij.openapi.actionSystem.CommonDataKeys; import com.intellij.openapi.actionSystem.LangDataKeys; import com.intellij.openapi.actionSystem.Presentation; import com.intellij.openapi.application.ApplicationManager; import com.intellij.openapi.diff.impl.util.LabeledEditor; import com.intellij.openapi.editor.Document; import com.intellij.openapi.editor.EditorFactory; import com.intellij.openapi.editor.ex.EditorEx; import com.intellij.openapi.fileEditor.FileDocumentManager; import com.intellij.openapi.module.Module; import com.intellij.openapi.project.DumbAwareAction; import com.intellij.openapi.project.Project; import com.intellij.openapi.ui.FrameWrapper; import com.intellij.openapi.ui.Messages; import com.intellij.openapi.util.Disposer; import com.intellij.openapi.vfs.VirtualFile; import com.intellij.psi.PsiDirectory; import com.intellij.psi.PsiFile; import com.intellij.testFramework.LightVirtualFile; import com.intellij.util.ui.JBUI; import com.jetbrains.edu.coursecreator.CCUtils; import com.jetbrains.edu.learning.EduUtils; import com.jetbrains.edu.learning.NewPlaceholderPainter; import com.jetbrains.edu.learning.StudyTaskManager; import com.jetbrains.edu.learning.courseFormat.AnswerPlaceholder; import com.jetbrains.edu.learning.courseFormat.Course; import com.jetbrains.edu.learning.courseFormat.TaskFile; import com.jetbrains.edu.learning.courseFormat.tasks.Task; import org.jetbrains.annotations.NotNull; import javax.swing.*; import java.awt.*; import java.text.SimpleDateFormat; import java.util.Calendar; public class CCShowPreview extends DumbAwareAction { public static final String SHOW_PREVIEW = "Preview Task File"; public static final String NO_PREVIEW_MESSAGE = "Preview is available for task files with answer placeholders only"; public CCShowPreview() { super(SHOW_PREVIEW, SHOW_PREVIEW, null); } @Override public void update(@NotNull AnActionEvent e) { Presentation presentation = e.getPresentation(); presentation.setEnabledAndVisible(false); Project project = e.getProject(); if (project == null) { return; } if (!CCUtils.isCourseCreator(project)) { return; } final PsiFile file = CommonDataKeys.PSI_FILE.getData(e.getDataContext()); if (file != null) { TaskFile taskFile = EduUtils.getTaskFile(project, file.getVirtualFile()); if (taskFile != null && taskFile.isVisible()) { presentation.setEnabledAndVisible(true); } } } @Override public void actionPerformed(@NotNull AnActionEvent e) { final Project project = e.getProject(); Module module = LangDataKeys.MODULE.getData(e.getDataContext()); if (project == null || module == null) { return; } final PsiFile file = CommonDataKeys.PSI_FILE.getData(e.getDataContext()); if (file == null) { return; } Course course = StudyTaskManager.getInstance(project).getCourse(); if (course == null) { return; } VirtualFile virtualFile = file.getVirtualFile(); TaskFile taskFile = EduUtils.getTaskFile(project, virtualFile); if (taskFile == null || !taskFile.isVisible()) { return; } final PsiDirectory taskDir = file.getContainingDirectory(); if (taskDir == null) { return; } PsiDirectory lessonDir = taskDir.getParentDirectory(); if (lessonDir == null) { return; } if (taskFile.getAnswerPlaceholders().isEmpty()) { Messages.showInfoMessage(NO_PREVIEW_MESSAGE, "No Preview for This File"); return; } final Task task = taskFile.getTask(); ApplicationManager.getApplication().runWriteAction(() -> { TaskFile studentTaskFile = EduUtils.createStudentFile(project, virtualFile, task); if (studentTaskFile != null) { showPreviewDialog(project, studentTaskFile); } }); } private static void showPreviewDialog(@NotNull Project project, @NotNull TaskFile taskFile) { final FrameWrapper showPreviewFrame = new FrameWrapper(project); final LightVirtualFile userFile = new LightVirtualFile(taskFile.getName(), taskFile.getText()); showPreviewFrame.setTitle(userFile.getName()); LabeledEditor labeledEditor = new LabeledEditor(null); final EditorFactory factory = EditorFactory.getInstance(); Document document = FileDocumentManager.getInstance().getDocument(userFile); if (document == null) { return; } final EditorEx createdEditor = (EditorEx) factory.createEditor(document, project, userFile, true); Disposer.register(project, () -> factory.releaseEditor(createdEditor)); for (AnswerPlaceholder answerPlaceholder : taskFile.getAnswerPlaceholders()) { answerPlaceholder.setUseLength(true); NewPlaceholderPainter.paintPlaceholder(createdEditor, answerPlaceholder); } JPanel header = new JPanel(); header.setLayout(new BoxLayout(header, BoxLayout.Y_AXIS)); header.setBorder(JBUI.Borders.empty(10)); header.add(new JLabel("Read-only preview.")); String timeStamp = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").format(Calendar.getInstance().getTime()); header.add(new JLabel(String.format("Created %s.", timeStamp))); JComponent editorComponent = createdEditor.getComponent(); labeledEditor.setComponent(editorComponent, header); createdEditor.setCaretVisible(false); createdEditor.setCaretEnabled(false); showPreviewFrame.setComponent(labeledEditor); if (!ApplicationManager.getApplication().isUnitTestMode()) { showPreviewFrame.setSize(new Dimension(500, 500)); showPreviewFrame.show(); } } }