Java tutorial
/* * Copyright 2000-2009 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.intellij.ide.util; import com.intellij.CommonBundle; import com.intellij.ide.ExporterToTextFile; import com.intellij.ide.IdeBundle; import com.intellij.openapi.components.PathMacroManager; import com.intellij.openapi.diagnostic.Logger; import com.intellij.openapi.editor.Document; import com.intellij.openapi.editor.Editor; import com.intellij.openapi.editor.EditorFactory; import com.intellij.openapi.editor.EditorSettings; import com.intellij.openapi.editor.ex.EditorEx; import com.intellij.openapi.editor.impl.DocumentImpl; import com.intellij.openapi.editor.impl.EditorFactoryImpl; import com.intellij.openapi.fileTypes.PlainTextFileType; import com.intellij.openapi.ide.CopyPasteManager; import com.intellij.openapi.project.Project; import com.intellij.openapi.ui.DialogWrapper; import com.intellij.openapi.ui.FixedSizeButton; import com.intellij.openapi.ui.Messages; import com.intellij.openapi.util.text.StringUtil; import com.intellij.openapi.wm.WindowManager; import com.intellij.util.SystemProperties; import com.intellij.util.ui.UIUtil; import org.jetbrains.annotations.NotNull; import javax.swing.*; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import java.awt.*; import java.awt.datatransfer.StringSelection; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.TooManyListenersException; public class ExportToFileUtil { private static final Logger LOG = Logger.getInstance("#com.intellij.ide.util.ExportToFileUtil"); public static void exportTextToFile(Project project, String fileName, String textToExport) { String prepend = ""; File file = new File(fileName); if (file.exists()) { int result = Messages.showYesNoCancelDialog(project, IdeBundle.message("error.text.file.already.exists", fileName), IdeBundle.message("title.warning"), IdeBundle.message("action.overwrite"), IdeBundle.message("action.append"), CommonBundle.getCancelButtonText(), Messages.getWarningIcon()); if (result != 1 && result != 0) { return; } if (result == 1) { char[] buf = new char[(int) file.length()]; try { FileReader reader = new FileReader(fileName); try { reader.read(buf, 0, (int) file.length()); prepend = new String(buf) + SystemProperties.getLineSeparator(); } finally { reader.close(); } } catch (IOException e) { } } } try { FileWriter writer = new FileWriter(fileName); try { writer.write(prepend + textToExport); } finally { writer.close(); } } catch (IOException e) { Messages.showMessageDialog(project, IdeBundle.message("error.writing.to.file", fileName), CommonBundle.getErrorTitle(), Messages.getErrorIcon()); } } public static class ExportDialogBase extends DialogWrapper { private final Project myProject; private final ExporterToTextFile myExporter; protected Editor myTextArea; protected JTextField myTfFile; protected JButton myFileButton; private ChangeListener myListener; public ExportDialogBase(Project project, ExporterToTextFile exporter) { super(project, true); myProject = project; myExporter = exporter; myTfFile = new JTextField(); myFileButton = new FixedSizeButton(myTfFile); setHorizontalStretch(1.5f); setTitle(IdeBundle.message("title.export.preview")); setOKButtonText(IdeBundle.message("button.save")); setButtonsMargin(null); init(); try { myListener = new ChangeListener() { @Override public void stateChanged(ChangeEvent e) { initText(); } }; myExporter.addSettingsChangedListener(myListener); } catch (TooManyListenersException e) { LOG.error(e); } initText(); } @Override public void dispose() { myExporter.removeSettingsChangedListener(myListener); EditorFactory.getInstance().releaseEditor(myTextArea); super.dispose(); } private void initText() { myTextArea.getDocument().setText(myExporter.getReportText()); } @Override protected JComponent createCenterPanel() { final Document document = ((EditorFactoryImpl) EditorFactory.getInstance()).createDocument(true); ((DocumentImpl) document).setAcceptSlashR(true); myTextArea = EditorFactory.getInstance().createEditor(document, myProject, PlainTextFileType.INSTANCE, true); final EditorSettings settings = myTextArea.getSettings(); settings.setLineNumbersShown(false); settings.setLineMarkerAreaShown(false); settings.setFoldingOutlineShown(false); settings.setRightMarginShown(false); settings.setAdditionalLinesCount(0); settings.setAdditionalColumnsCount(0); settings.setAdditionalPageAtBottom(false); ((EditorEx) myTextArea).setBackgroundColor(UIUtil.getInactiveTextFieldBackgroundColor()); return myTextArea.getComponent(); } @Override protected JComponent createNorthPanel() { JPanel filePanel = createFilePanel(myTfFile, myFileButton); JComponent settingsPanel = myExporter.getSettingsEditor(); if (settingsPanel == null) { return filePanel; } JPanel northPanel = new JPanel(new BorderLayout()); northPanel.add(filePanel, BorderLayout.NORTH); northPanel.add(settingsPanel, BorderLayout.CENTER); return northPanel; } protected JPanel createFilePanel(JTextField textField, JButton button) { JPanel panel = new JPanel(); panel.setLayout(new GridBagLayout()); GridBagConstraints gbConstraints = new GridBagConstraints(); gbConstraints.fill = GridBagConstraints.HORIZONTAL; JLabel promptLabel = new JLabel(IdeBundle.message("editbox.export.to.file")); gbConstraints.weightx = 0; panel.add(promptLabel, gbConstraints); gbConstraints.weightx = 1; panel.add(textField, gbConstraints); gbConstraints.fill = 0; gbConstraints.weightx = 0; gbConstraints.insets = new Insets(0, 0, 0, 0); panel.add(button, gbConstraints); String defaultFilePath = myExporter.getDefaultFilePath(); if (!new File(defaultFilePath).isAbsolute()) { defaultFilePath = PathMacroManager.getInstance(myProject).collapsePath(defaultFilePath).replace('/', File.separatorChar); } else { defaultFilePath = defaultFilePath.replace('/', File.separatorChar); } textField.setText(defaultFilePath); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { browseFile(); } }); return panel; } protected void browseFile() { JFileChooser chooser = new JFileChooser(); if (myTfFile != null) { chooser.setCurrentDirectory(new File(myTfFile.getText())); } chooser.showOpenDialog(WindowManager.getInstance().suggestParentWindow(myProject)); if (chooser.getSelectedFile() != null) { myTfFile.setText(chooser.getSelectedFile().getAbsolutePath()); } } public String getText() { return myTextArea.getDocument().getText(); } public void setFileName(String s) { myTfFile.setText(s); } public String getFileName() { return myTfFile.getText(); } @Override @NotNull protected Action[] createActions() { return new Action[] { getOKAction(), new CopyToClipboardAction(), getCancelAction() }; } @Override protected String getDimensionServiceKey() { return "#com.intellij.ide.util.ExportDialog"; } protected class CopyToClipboardAction extends AbstractAction { public CopyToClipboardAction() { super(IdeBundle.message("button.copy")); putValue(AbstractAction.SHORT_DESCRIPTION, IdeBundle.message("description.copy.text.to.clipboard")); } @Override public void actionPerformed(ActionEvent e) { String s = StringUtil.convertLineSeparators(getText()); CopyPasteManager.getInstance().setContents(new StringSelection(s)); } } }; }