--- /dev/null
+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2019 Kevin Lamonte
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.ResourceBundle;
+
+import jexer.bits.StringUtils;
+import jexer.event.TKeypressEvent;
+import static jexer.TKeypress.*;
+
+/**
+ * TMessageBox is a system-modal dialog with buttons for OK, Cancel, Yes, or
+ * No. Call it like:
+ *
+ * <pre>
+ * {@code
+ * box = 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 {
+
+ /**
+ * Translated strings.
+ */
+ private static final ResourceBundle i18n = ResourceBundle.getBundle(TMessageBox.class.getName());
+
+ // ------------------------------------------------------------------------
+ // Constants --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * 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
+ };
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * The type of this message box.
+ */
+ private Type type;
+
+ /**
+ * My buttons.
+ */
+ private List<TButton> buttons;
+
+ /**
+ * Which button was clicked: OK, CANCEL, YES, or NO.
+ */
+ private Result result = Result.OK;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * 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 100x100 at (1, 1). These will be changed later.
+ super(application, title, 1, 1, 100, 100, CENTERED | MODAL);
+
+ // Hang onto type so that we can provide more convenience in
+ // onKeypress().
+ this.type = type;
+
+ // Determine width and height
+ String [] lines = caption.split("\n");
+ int width = StringUtils.width(title) + 12;
+ setHeight(6 + lines.length);
+ for (String line: lines) {
+ if (StringUtils.width(line) + 4 > width) {
+ width = StringUtils.width(line) + 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++;
+ 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(i18n.getString("okButton"), 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(i18n.getString("okButton"), buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.OK;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 8 + 4;
+ buttons.add(addButton(i18n.getString("cancelButton"), 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(i18n.getString("yesButton"), buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.YES;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 5 + 4;
+ buttons.add(addButton(i18n.getString("noButton"), 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(i18n.getString("yesButton"), buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.YES;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 5 + 4;
+ buttons.add(addButton(i18n.getString("noButton"), buttonX, lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.NO;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ buttonX += 4 + 4;
+ buttons.add(addButton(i18n.getString("cancelButton"), buttonX,
+ lineI,
+ new TAction() {
+ public void DO() {
+ result = Result.CANCEL;
+ getApplication().closeWindow(TMessageBox.this);
+ }
+ }
+ )
+ );
+ break;
+
+ default:
+ throw new IllegalArgumentException("Invalid message box type: " +
+ type);
+ }
+
+ if (yield) {
+ // Set the secondaryThread to run me
+ getApplication().enableSecondaryEventReceiver(this);
+
+ // Yield to the secondary thread. When I come back from the
+ // constructor response will already be set.
+ getApplication().yield();
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // TWindow ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Handle keystrokes.
+ *
+ * @param keypress keystroke event
+ */
+ @Override
+ public void onKeypress(final TKeypressEvent keypress) {
+
+ if (this instanceof TInputBox) {
+ super.onKeypress(keypress);
+ return;
+ }
+
+ // Some convenience for message boxes: Alt won't be needed for the
+ // buttons.
+ switch (type) {
+
+ case OK:
+ if (keypress.equals(kbO)) {
+ buttons.get(0).dispatch();
+ return;
+ }
+ break;
+
+ case OKCANCEL:
+ if (keypress.equals(kbO)) {
+ buttons.get(0).dispatch();
+ return;
+ } else if (keypress.equals(kbC)) {
+ buttons.get(1).dispatch();
+ return;
+ }
+ break;
+
+ case YESNO:
+ if (keypress.equals(kbY)) {
+ buttons.get(0).dispatch();
+ return;
+ } else if (keypress.equals(kbN)) {
+ buttons.get(1).dispatch();
+ return;
+ }
+ break;
+
+ case YESNOCANCEL:
+ if (keypress.equals(kbY)) {
+ buttons.get(0).dispatch();
+ return;
+ } else if (keypress.equals(kbN)) {
+ buttons.get(1).dispatch();
+ return;
+ } else if (keypress.equals(kbC)) {
+ buttons.get(2).dispatch();
+ return;
+ }
+ break;
+
+ default:
+ throw new IllegalArgumentException("Invalid message box type: " +
+ type);
+ }
+
+ super.onKeypress(keypress);
+ }
+
+ // ------------------------------------------------------------------------
+ // TMessageBox ------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the result.
+ *
+ * @return the result: OK, CANCEL, YES, or NO.
+ */
+ public final Result getResult() {
+ return result;
+ }
+
+ /**
+ * See if the user clicked YES.
+ *
+ * @return true if the user clicked YES
+ */
+ public final boolean isYes() {
+ return (result == Result.YES);
+ }
+
+ /**
+ * See if the user clicked NO.
+ *
+ * @return true if the user clicked NO
+ */
+ public final boolean isNo() {
+ return (result == Result.NO);
+ }
+
+ /**
+ * See if the user clicked OK.
+ *
+ * @return true if the user clicked OK
+ */
+ public final boolean isOk() {
+ return (result == Result.OK);
+ }
+
+ /**
+ * See if the user clicked CANCEL.
+ *
+ * @return true if the user clicked CANCEL
+ */
+ public final boolean isCancel() {
+ return (result == Result.CANCEL);
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff