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.codeInsight.intention.impl; import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; import javax.swing.KeyStroke; import javax.swing.event.DocumentEvent; import org.jetbrains.annotations.NonNls; import org.jetbrains.annotations.Nullable; import com.intellij.codeInsight.CodeInsightBundle; import com.intellij.ide.util.PropertiesComponent; import com.intellij.openapi.project.Project; import com.intellij.openapi.ui.ComboBox; import com.intellij.openapi.ui.DialogWrapper; import com.intellij.openapi.ui.Messages; import com.intellij.psi.PsiClass; import com.intellij.psi.PsiField; import com.intellij.psi.PsiNameHelper; import com.intellij.psi.PsiType; import com.intellij.refactoring.ui.TypeSelector; import com.intellij.ui.DocumentAdapter; public class CreateFieldFromParameterDialog extends DialogWrapper { private final Project myProject; private final String[] myNames; private final PsiType[] myTypes; private final PsiClass myTargetClass; private final boolean myFieldMayBeFinal; private JComponent myNameField; private JCheckBox myCbFinal; private static final @NonNls String PROPERTY_NAME = "CREATE_FIELD_FROM_PARAMETER_DECLARE_FINAL"; private TypeSelector myTypeSelector; public CreateFieldFromParameterDialog(Project project, String[] names, PsiClass targetClass, boolean fieldMayBeFinal, PsiType... types) { super(project, true); myProject = project; myNames = names; myTypes = types; myTargetClass = targetClass; myFieldMayBeFinal = fieldMayBeFinal; setTitle(CodeInsightBundle.message("dialog.create.field.from.parameter.title")); init(); } @Override protected void doOKAction() { if (myCbFinal.isEnabled()) { PropertiesComponent.getInstance().setValue(PROPERTY_NAME, String.valueOf(myCbFinal.isSelected())); } final PsiField[] fields = myTargetClass.getFields(); for (PsiField field : fields) { if (field.getName().equals(getEnteredName())) { int result = Messages.showOkCancelDialog(getContentPane(), CodeInsightBundle.message("dialog.create.field.from.parameter.already.exists.text", getEnteredName()), CodeInsightBundle.message("dialog.create.field.from.parameter.already.exists.title"), Messages.getQuestionIcon()); if (result == 0) { close(OK_EXIT_CODE); } else { return; } } } close(OK_EXIT_CODE); } @Override protected void init() { super.init(); updateOkStatus(); } public String getEnteredName() { if (myNameField instanceof JComboBox) { JComboBox combobox = (JComboBox) myNameField; return (String) combobox.getEditor().getItem(); } else { return ((JTextField) myNameField).getText(); } } public boolean isDeclareFinal() { if (myCbFinal.isEnabled()) { return myCbFinal.isSelected(); } return false; } @Override protected JComponent createNorthPanel() { if (myNames.length > 1) { final ComboBox combobox = new ComboBox(myNames, 200); myNameField = combobox; combobox.setEditable(true); combobox.setSelectedIndex(0); combobox.setMaximumRowCount(8); combobox.registerKeyboardAction(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (combobox.isPopupVisible()) { combobox.setPopupVisible(false); } else { doCancelAction(); } } }, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); combobox.addItemListener(new ItemListener() { @Override public void itemStateChanged(ItemEvent e) { updateOkStatus(); } }); combobox.getEditor().getEditorComponent().addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { updateOkStatus(); } @Override public void keyReleased(KeyEvent e) { updateOkStatus(); } @Override public void keyTyped(KeyEvent e) { updateOkStatus(); } }); } else { JTextField field = new JTextField() { @Override public Dimension getPreferredSize() { Dimension size = super.getPreferredSize(); return new Dimension(200, size.height); } }; myNameField = field; field.setText(myNames[0]); field.getDocument().addDocumentListener(new DocumentAdapter() { @Override protected void textChanged(DocumentEvent e) { updateOkStatus(); } }); } JPanel panel = new JPanel(); panel.setLayout(new GridBagLayout()); GridBagConstraints gbConstraints = new GridBagConstraints(); gbConstraints.insets = new Insets(4, 4, 4, 4); gbConstraints.anchor = GridBagConstraints.EAST; gbConstraints.fill = GridBagConstraints.BOTH; gbConstraints.gridwidth = 1; gbConstraints.weightx = 1; gbConstraints.weighty = 1; gbConstraints.gridx = 0; gbConstraints.gridy = 0; final JLabel typeLabel = new JLabel( CodeInsightBundle.message("dialog.create.field.from.parameter.field.type.label")); panel.add(typeLabel, gbConstraints); gbConstraints.gridx = 1; if (myTypes.length > 1) { myTypeSelector = new TypeSelector(myProject); myTypeSelector.setTypes(myTypes); } else { myTypeSelector = new TypeSelector(myTypes[0], myProject); } panel.add(myTypeSelector.getComponent(), gbConstraints); gbConstraints.gridwidth = 1; gbConstraints.weightx = 0; gbConstraints.weighty = 1; gbConstraints.gridx = 0; gbConstraints.gridy = 1; JLabel namePrompt = new JLabel( CodeInsightBundle.message("dialog.create.field.from.parameter.field.name.label")); panel.add(namePrompt, gbConstraints); gbConstraints.gridwidth = 1; gbConstraints.weightx = 1; gbConstraints.gridx = 1; gbConstraints.gridy = 1; panel.add(myNameField, gbConstraints); return panel; } @Override protected JComponent createCenterPanel() { JPanel panel = new JPanel(new GridBagLayout()); GridBagConstraints gbConstraints = new GridBagConstraints(); gbConstraints.fill = GridBagConstraints.HORIZONTAL; gbConstraints.weightx = 1; gbConstraints.weighty = 0; gbConstraints.gridwidth = 1; gbConstraints.gridx = 0; gbConstraints.gridy = 0; gbConstraints.insets = new Insets(0, 0, 0, 0); myCbFinal = new JCheckBox( CodeInsightBundle.message("dialog.create.field.from.parameter.declare.final.checkbox")); if (myFieldMayBeFinal) { myCbFinal.setSelected(PropertiesComponent.getInstance().isTrueValue(PROPERTY_NAME)); } else { myCbFinal.setSelected(false); myCbFinal.setEnabled(false); } gbConstraints.gridy++; panel.add(myCbFinal, gbConstraints); myCbFinal.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { requestFocusInNameWindow(); if (myCbFinal.isEnabled()) { } } }); return panel; } private void requestFocusInNameWindow() { if (myNameField instanceof JTextField) { myNameField.requestFocusInWindow(); } else { ((JComboBox) myNameField).getEditor().getEditorComponent().requestFocusInWindow(); } } private void updateOkStatus() { String text = getEnteredName(); setOKActionEnabled(PsiNameHelper.getInstance(myProject).isIdentifier(text)); } @Override public JComponent getPreferredFocusedComponent() { return myNameField; } @Nullable public PsiType getType() { return myTypeSelector.getSelectedType(); } }