--- /dev/null
+/**
+ * Jexer - Java Text User Interface
+ *
+ * License: LGPLv3 or later
+ *
+ * This module is licensed under the GNU Lesser General Public License
+ * Version 3. Please see the file "COPYING" in this directory for more
+ * information about the GNU Lesser General Public License Version 3.
+ *
+ * Copyright (C) 2015 Kevin Lamonte
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see
+ * http://www.gnu.org/licenses/, or write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TMessageBox is a system-modal dialog with buttons for OK, Cancel, Yes, or
+ * No. Call it like:
+ *
+ * <p>
+ * <pre>
+ * {@code
+ * box = application.messageBox(title, caption,
+ * TMessageBox.Type.OK | TMessageBox.Type.CANCEL);
+ *
+ * if (box.getResult() == TMessageBox.OK) {
+ * ... the user pressed OK, do stuff ...
+ * }
+ * }
+ * </pre>
+ *
+ */
+public class TMessageBox extends TWindow {
+
+ /**
+ * Message boxes have these supported types.
+ */
+ public enum Type {
+ /**
+ * Show an OK button.
+ */
+ OK,
+
+ /**
+ * Show both OK and Cancel buttons.
+ */
+ OKCANCEL,
+
+ /**
+ * Show both Yes and No buttons.
+ */
+ YESNO,
+
+ /**
+ * Show Yes, No, and Cancel buttons.
+ */
+ YESNOCANCEL
+ };
+
+ /**
+ * Message boxes have these possible results.
+ */
+ public enum Result {
+ /**
+ * User clicked "OK".
+ */
+ OK,
+
+ /**
+ * User clicked "Cancel".
+ */
+ CANCEL,
+
+ /**
+ * User clicked "Yes".
+ */
+ YES,
+
+ /**
+ * User clicked "No".
+ */
+ NO
+ };
+
+
+ /**
+ * Which button was clicked: OK, CANCEL, YES, or NO.
+ */
+ private Result result = Result.OK;
+
+ /**
+ * Get the result.
+ *
+ * @return the result: OK, CANCEL, YES, or NO.
+ */
+ public final Result getResult() {
+ return result;
+ }
+
+ /**
+ * Public constructor. The message box will be centered on screen.
+ *
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param caption message to display. Use embedded newlines to get a
+ * multi-line box.
+ */
+ public TMessageBox(final TApplication application, final String title,
+ final String caption) {
+
+ this(application, title, caption, Type.OK, true);
+ }
+
+ /**
+ * Public constructor. The message box will be centered on screen.
+ *
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param caption message to display. Use embedded newlines to get a
+ * multi-line box.
+ * @param type one of the Type constants. Default is Type.OK.
+ */
+ public TMessageBox(final TApplication application, final String title,
+ final String caption, final Type type) {
+
+ this(application, title, caption, type, true);
+ }
+
+ /**
+ * Public constructor. The message box will be centered on screen.
+ *
+ * @param application TApplication that manages this window
+ * @param title window title, will be centered along the top border
+ * @param caption message to display. Use embedded newlines to get a
+ * multi-line box.
+ * @param type one of the Type constants. Default is Type.OK.
+ * @param yield if true, yield this Thread. Subclasses need to set this
+ * to false and yield at their end of their constructor intead.
+ */
+ protected TMessageBox(final TApplication application, final String title,
+ final String caption, final Type type, final boolean yield) {
+
+ // Start as 50x50 at (1, 1). These will be changed later.
+ super(application, title, 1, 1, 100, 100, CENTERED | MODAL);
+
+ // Determine width and height
+ String [] lines = caption.split("\n");
+ int width = title.length() + 12;
+ setHeight(6 + lines.length);
+ for (String line: lines) {
+ if (line.length() + 4 > width) {
+ width = line.length() + 4;
+ }
+ }
+ setWidth(width);
+ if (getWidth() > getScreen().getWidth()) {
+ setWidth(getScreen().getWidth());
+ }
+ // Re-center window to get an appropriate (x, y)
+ center();
+
+ // Now add my elements
+ int lineI = 1;
+ for (String line: lines) {
+ addLabel(line, 1, lineI, "twindow.background.modal");
+ lineI++;
+ }
+
+ // The button line
+ lineI++;
+ List<TButton> buttons = new ArrayList<TButton>();
+
+ int buttonX = 0;
+
+ // Setup button actions
+ switch (type) {
+
+ case OK:
+ result = Result.OK;
+ if (getWidth() < 15) {
+ setWidth(15);
+ }
+ buttonX = (getWidth() - 11) / 2;
+ buttons.add(addButton(" &OK ", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.OK;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ break;
+
+ case OKCANCEL:
+ result = Result.CANCEL;
+ if (getWidth() < 26) {
+ setWidth(26);
+ }
+ buttonX = (getWidth() - 22) / 2;
+ buttons.add(addButton(" &OK ", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.OK;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 8 + 4;
+ buttons.add(addButton("&Cancel", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.CANCEL;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ break;
+
+ case YESNO:
+ result = Result.NO;
+ if (getWidth() < 20) {
+ setWidth(20);
+ }
+ buttonX = (getWidth() - 16) / 2;
+ buttons.add(addButton("&Yes", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.YES;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 5 + 4;
+ buttons.add(addButton("&No", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.NO;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ break;
+
+ case YESNOCANCEL:
+ result = Result.CANCEL;
+ if (getWidth() < 31) {
+ setWidth(31);
+ }
+ buttonX = (getWidth() - 27) / 2;
+ buttons.add(addButton("&Yes", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.YES;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 5 + 4;
+ buttons.add(addButton("&No", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.NO;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 4 + 4;
+ buttons.add(addButton("&Cancel", buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.CANCEL;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ break;
+
+ default:
+ throw new IllegalArgumentException("Invalid message box type: " + type);
+ }
+
+ // Set the secondaryThread to run me
+ getApplication().enableSecondaryEventReceiver(this);
+
+ if (yield) {
+ // Yield to the secondary thread. When I come back from the
+ // constructor response will already be set.
+ getApplication().yield();
+ }
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff