Java tutorial
/* * Copyright 2016 Igor Maznitsa. * * 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.igormaznitsa.sciareto.ui.tabs; import java.awt.Cursor; 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.KeyEvent; import java.io.File; import java.io.IOException; import javax.annotation.Nonnull; import javax.annotation.Nullable; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.ToolTipManager; import javax.swing.UIManager; import org.apache.commons.lang.StringEscapeUtils; import com.igormaznitsa.meta.common.interfaces.Disposable; import com.igormaznitsa.mindmap.model.nio.Paths; import com.igormaznitsa.mindmap.swing.panel.utils.Utils; import com.igormaznitsa.sciareto.Context; import com.igormaznitsa.sciareto.ui.DialogProviderManager; import com.igormaznitsa.sciareto.ui.UiUtils; import com.igormaznitsa.sciareto.ui.tree.NodeProject; public final class TabTitle extends JPanel { private static final long serialVersionUID = -6534083975320248288L; private final JLabel titleLabel; private final JButton closeButton; private volatile File associatedFile; private volatile boolean changed; private final Context context; private final TabProvider parent; private static final Icon NIMBUS_CLOSE_ICON = new ImageIcon(UiUtils.loadImage("nimbusCloseFrame.png")); public TabTitle(@Nonnull final Context context, @Nonnull final TabProvider parent, @Nullable final File associatedFile) { super(new GridBagLayout()); this.parent = parent; this.context = context; this.associatedFile = associatedFile; this.changed = this.associatedFile == null; this.setOpaque(false); final GridBagConstraints constraints = new GridBagConstraints(); constraints.fill = GridBagConstraints.BOTH; constraints.weightx = 1000.0d; final TabTitle theInstance = this; this.titleLabel = new JLabel() { private static final long serialVersionUID = 8689945842487138781L; @Override protected void processKeyEvent(@Nonnull final KeyEvent e) { theInstance.getParent().dispatchEvent(e); } @Override public String getToolTipText() { return theInstance.getToolTipText(); } @Override public boolean isFocusable() { return false; } }; this.add(this.titleLabel, constraints); final Icon uiCloseIcon = UIManager.getIcon("InternalFrameTitlePane.closeIcon"); this.closeButton = new JButton(uiCloseIcon == null ? NIMBUS_CLOSE_ICON : uiCloseIcon) { private static final long serialVersionUID = -8005282815756047979L; @Override public String getToolTipText() { return theInstance.getToolTipText(); } @Override public boolean isFocusable() { return false; } }; this.closeButton.setToolTipText("Close tab"); this.closeButton.setBorder(null); this.closeButton.setContentAreaFilled(false); this.closeButton.setMargin(new Insets(0, 0, 0, 0)); this.closeButton.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR)); this.closeButton.setOpaque(false); this.closeButton.addActionListener(new ActionListener() { @Override public void actionPerformed(@Nonnull final ActionEvent e) { doSafeClose(); } }); constraints.fill = GridBagConstraints.BOTH; constraints.weightx = 0.0d; constraints.insets = new Insets(2, 8, 2, 0); this.add(this.closeButton, constraints); updateView(); ToolTipManager.sharedInstance().registerComponent(closeButton); ToolTipManager.sharedInstance().registerComponent(this.titleLabel); ToolTipManager.sharedInstance().registerComponent(this); } @Override public boolean contains(int x, int y) { return this.closeButton.getBounds().contains(x, y); } public boolean save() throws IOException { boolean result = false; if (this.parent.saveDocument()) { result = true; this.changed = false; updateView(); } return result; } public boolean saveAs() throws IOException { boolean result = false; if (this.parent.saveDocumentAs()) { result = true; final NodeProject project = this.context.findProjectForFile(this.associatedFile); if (project != null) { project.getGroup().refreshProjectFolder(project); this.context.focusInTree(this); } } return result; } @Override public boolean isFocusable() { return false; } @Override @Nullable public String getToolTipText() { return this.associatedFile == null ? null : this.associatedFile.getAbsolutePath(); } public boolean belongFolderOrSame(@Nonnull final File folder) { boolean result = false; if (this.associatedFile != null) { return folder.equals(this.associatedFile) || Paths.toPath(this.associatedFile).startsWith(Paths.toPath(folder)); } return result; } @Nonnull public TabProvider getProvider() { return this.parent; } public void doSafeClose() { final boolean close = !this.changed || DialogProviderManager.getInstance().getDialogProvider() .msgConfirmOkCancel("Non saved file", "Close unsaved document '" + makeName() + "\'?"); if (close) { this.context.closeTab(this); } } @Nullable public File getAssociatedFile() { return this.associatedFile; } public void setAssociatedFile(@Nullable final File file) { this.associatedFile = file; updateView(); } public void setChanged(final boolean flag) { this.changed = flag; updateView(); } public boolean isChanged() { return this.changed; } public void disposeEditor() { final JComponent compo = this.parent.getMainComponent(); if (compo instanceof Disposable) { ((Disposable) compo).dispose(); } } @Nonnull private String makeName() { final File file = this.associatedFile; return file == null ? "Untitled" : file.getName(); } private void updateView() { Utils.safeSwingCall(new Runnable() { @Override public void run() { titleLabel.setText("<html>" + (changed ? "<b>*<u>" : "") + StringEscapeUtils.escapeHtml(makeName()) + (changed ? "</u></b>" : "") + "</html>"); revalidate(); } }); } }