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/*
* Copyright 2000-2012 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.ui;
import com.intellij.icons.AllIcons;
import com.intellij.openapi.util.IconLoader;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
/**
* @author evgeny zakrevsky
*/
public class HideableDecorator {
private final JPanel myPanel;
private final TitledSeparator myTitledSeparator;
private final boolean myAdjustWindow;
private boolean myOn;
private JComponent myContent;
private Dimension myPreviousContentSize;
public HideableDecorator(JPanel panel, String title, boolean adjustWindow) {
myPanel = panel;
myAdjustWindow = adjustWindow;
myTitledSeparator = new TitledSeparator(title, null) {
@Override
public void addNotify() {
super.addNotify();
registerMnemonic();
}
};
myPanel.add(myTitledSeparator, BorderLayout.NORTH);
myTitledSeparator.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
myTitledSeparator.addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
if (myOn) {
off();
}
else {
on();
}
}
});
}
public void setContentComponent(@Nullable JComponent content) {
if (content == null && myContent != null) {
myPanel.remove(myContent);
}
myContent = content;
if (myContent != null) {
myContent.setVisible(myOn);
myPanel.add(myContent, BorderLayout.CENTER);
}
}
public void setOn(boolean on) {
myOn = on;
if (myOn) {
on();
}
else {
off();
}
}
public boolean isExpanded() {
return myOn;
}
public void setTitle(String title) {
myTitledSeparator.setText(title);
}
public String getTitle() {
return myTitledSeparator.getText();
}
protected void on() {
myOn = true;
myTitledSeparator.getLabel().setIcon(AllIcons.General.SplitDown);
myTitledSeparator.getLabel().setDisabledIcon(IconLoader.getTransparentIcon(AllIcons.General.SplitDown, 0.5f));
myTitledSeparator.getLabel().setIconTextGap(5);
if (myContent != null) {
myContent.setVisible(true);
}
adjustWindow();
myPanel.invalidate();
myPanel.repaint();
}
protected void off() {
myOn = false;
myTitledSeparator.getLabel().setIcon(AllIcons.General.SplitRight);
myTitledSeparator.getLabel().setDisabledIcon(IconLoader.getTransparentIcon(AllIcons.General.SplitRight, 0.5f));
if (myContent != null) {
myContent.setVisible(false);
myPreviousContentSize = myContent.getSize();
}
adjustWindow();
myPanel.invalidate();
myPanel.repaint();
}
private void adjustWindow() {
if (!myAdjustWindow) return;
final Window window = SwingUtilities.getWindowAncestor(myPanel);
if (window == null) return;
final Dimension size = window.getSize();
final Dimension contentSize = myPreviousContentSize != null && myPreviousContentSize.width > 0 && myPreviousContentSize.height > 0
? myPreviousContentSize
: myContent.getPreferredSize();
final Dimension newSize;
if (myOn) {
newSize = new Dimension(Math.max(size.width, myContent.getSize().width), size.height + contentSize.height);
}
else {
newSize = new Dimension(size.width, size.height - contentSize.height);
}
if (!newSize.equals(size)) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
if (window.isShowing()) {
window.setSize(newSize);
}
}
});
}
}
public void setEnabled(boolean enabled) {
myTitledSeparator.setEnabled(enabled);
myContent.setEnabled(enabled);
}
private void registerMnemonic() {
final int mnemonicIndex = UIUtil.getDisplayMnemonicIndex(getTitle());
if (mnemonicIndex != -1) {
myPanel.getActionMap().put("Collapse/Expand on mnemonic", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
if (myOn) {
off();
}
else {
on();
}
}
});
final Character mnemonicCharacter = UIUtil.removeMnemonic(getTitle()).toUpperCase().charAt(mnemonicIndex);
myPanel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
.put(KeyStroke.getKeyStroke(mnemonicCharacter, InputEvent.ALT_MASK, false), "Collapse/Expand on mnemonic");
}
}
}
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