| /******************************************************************************* |
| * Copyright (c) 2000, 2012 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| |
| /** |
| * Instances of this class are used to inform or warn the user. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>ICON_ERROR, ICON_INFORMATION, ICON_QUESTION, ICON_WARNING, ICON_WORKING</dd> |
| * <dd>OK, OK | CANCEL</dd> |
| * <dd>YES | NO, YES | NO | CANCEL</dd> |
| * <dd>RETRY | CANCEL</dd> |
| * <dd>ABORT | RETRY | IGNORE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles ICON_ERROR, ICON_INFORMATION, ICON_QUESTION, |
| * ICON_WARNING and ICON_WORKING may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample, Dialog tab</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class MessageBox extends Dialog { |
| |
| String message = ""; |
| long /*int*/ handle; |
| /** |
| * Constructs a new instance of this class given only its parent. |
| * |
| * @param parent a shell which will be the parent of the new instance |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| */ |
| public MessageBox (Shell parent) { |
| this (parent, SWT.OK | SWT.ICON_INFORMATION | SWT.APPLICATION_MODAL); |
| } |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * |
| * @param parent a shell which will be the parent of the new instance |
| * @param style the style of dialog to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#ICON_ERROR |
| * @see SWT#ICON_INFORMATION |
| * @see SWT#ICON_QUESTION |
| * @see SWT#ICON_WARNING |
| * @see SWT#ICON_WORKING |
| * @see SWT#OK |
| * @see SWT#CANCEL |
| * @see SWT#YES |
| * @see SWT#NO |
| * @see SWT#ABORT |
| * @see SWT#RETRY |
| * @see SWT#IGNORE |
| */ |
| public MessageBox (Shell parent, int style) { |
| super (parent, checkStyle (parent, checkStyle (style))); |
| checkSubclass (); |
| } |
| |
| /** |
| * Returns the dialog's message, or an empty string if it does not have one. |
| * The message is a description of the purpose for which the dialog was opened. |
| * This message will be visible in the dialog while it is open. |
| * |
| * @return the message |
| */ |
| public String getMessage () { |
| return message; |
| } |
| |
| /** |
| * Sets the dialog's message, which is a description of |
| * the purpose for which it was opened. This message will be |
| * visible on the dialog while it is open. |
| * |
| * @param string the message |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| */ |
| public void setMessage (String string) { |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| message = string; |
| } |
| |
| /** |
| * Makes the dialog visible and brings it to the front |
| * of the display. |
| * |
| * @return the ID of the button that was selected to dismiss the |
| * message box (e.g. SWT.OK, SWT.CANCEL, etc.) |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
| * </ul> |
| */ |
| public int open () { |
| long /*int*/ parentHandle = (parent != null) ? parent.topHandle() : 0; |
| int dialogFlags = OS.GTK_DIALOG_DESTROY_WITH_PARENT; |
| if ((style & (SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) != 0) { |
| dialogFlags |= OS.GTK_DIALOG_MODAL; |
| } |
| int messageType = OS.GTK_MESSAGE_INFO; |
| if ((style & (SWT.ICON_WARNING)) != 0) messageType = OS.GTK_MESSAGE_WARNING; |
| if ((style & (SWT.ICON_QUESTION)) != 0) messageType = OS.GTK_MESSAGE_QUESTION; |
| if ((style & (SWT.ICON_ERROR)) != 0) messageType = OS.GTK_MESSAGE_ERROR; |
| |
| byte [] buffer = Converter.wcsToMbcs (null, fixPercent (message), true); |
| handle = OS.gtk_message_dialog_new(parentHandle, dialogFlags, messageType, 0, buffer); |
| if (handle == 0) error(SWT.ERROR_NO_HANDLES); |
| if (parentHandle != 0) { |
| long /*int*/ pixbufs = OS.gtk_window_get_icon_list (parentHandle); |
| if (pixbufs != 0) { |
| OS.gtk_window_set_icon_list (handle, pixbufs); |
| OS.g_list_free (pixbufs); |
| } |
| } |
| Display display = parent != null ? parent.getDisplay (): Display.getCurrent (); |
| createButtons (display.getDismissalAlignment ()); |
| buffer = Converter.wcsToMbcs(null, title, true); |
| OS.gtk_window_set_title(handle,buffer); |
| display.addIdleProc (); |
| Dialog oldModal = null; |
| /* |
| * In order to allow the dialog to be modal of it's |
| * parent shells, it is required to assign the |
| * dialog to the same window group as of the shells. |
| */ |
| long /*int*/ group = OS.gtk_window_get_group(0); |
| OS.gtk_window_group_add_window (group, handle); |
| |
| if (OS.gtk_window_get_modal (handle)) { |
| oldModal = display.getModalDialog (); |
| display.setModalDialog (this); |
| } |
| int signalId = 0; |
| long /*int*/ hookId = 0; |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| signalId = OS.g_signal_lookup (OS.map, OS.GTK_TYPE_WIDGET()); |
| hookId = OS.g_signal_add_emission_hook (signalId, 0, display.emissionProc, handle, 0); |
| } |
| int response = OS.gtk_dialog_run (handle); |
| /* |
| * This call to gdk_threads_leave() is a temporary work around |
| * to avoid deadlocks when gdk_threads_init() is called by native |
| * code outside of SWT (i.e AWT, etc). It ensures that the current |
| * thread leaves the GTK lock acquired by the function above. |
| */ |
| OS.gdk_threads_leave(); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| OS.g_signal_remove_emission_hook (signalId, hookId); |
| } |
| if (OS.gtk_window_get_modal (handle)) { |
| display.setModalDialog (oldModal); |
| } |
| display.removeIdleProc (); |
| OS.gtk_widget_destroy (handle); |
| return response; |
| } |
| |
| private void createButtons (int alignment) { |
| if (alignment == SWT.LEFT) { |
| if ((style & SWT.OK) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-ok", true), SWT.OK); |
| if ((style & SWT.ABORT) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Abort"), true), SWT.ABORT); |
| if ((style & SWT.RETRY) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Retry"), true), SWT.RETRY); |
| if ((style & SWT.YES) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-yes", true), SWT.YES); |
| if ((style & SWT.NO) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-no", true), SWT.NO); |
| if ((style & SWT.IGNORE) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Ignore"), true), SWT.IGNORE); |
| if ((style & SWT.CANCEL) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-cancel", true), SWT.CANCEL); |
| } else { |
| if ((style & SWT.CANCEL) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-cancel", true), SWT.CANCEL); |
| if ((style & SWT.OK) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-ok", true), SWT.OK); |
| if ((style & SWT.NO) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-no", true), SWT.NO); |
| if ((style & SWT.YES) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, "gtk-yes", true), SWT.YES); |
| if ((style & SWT.IGNORE) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Ignore"), true), SWT.IGNORE); |
| if ((style & SWT.RETRY) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Retry"), true), SWT.RETRY); |
| if ((style & SWT.ABORT) != 0) OS.gtk_dialog_add_button(handle, Converter.wcsToMbcs (null, SWT.getMessage("SWT_Abort"), true), SWT.ABORT); |
| } |
| } |
| |
| private static int checkStyle (int style) { |
| int mask = (SWT.YES | SWT.NO | SWT.OK | SWT.CANCEL | SWT.ABORT | SWT.RETRY | SWT.IGNORE); |
| int bits = style & mask; |
| if (bits == SWT.OK || bits == SWT.CANCEL || bits == (SWT.OK | SWT.CANCEL)) return style; |
| if (bits == SWT.YES || bits == SWT.NO || bits == (SWT.YES | SWT.NO) || bits == (SWT.YES | SWT.NO | SWT.CANCEL)) return style; |
| if (bits == (SWT.RETRY | SWT.CANCEL) || bits == (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) return style; |
| style = (style & ~mask) | SWT.OK; |
| return style; |
| } |
| |
| char[] fixPercent (String string) { |
| int length = string.length (); |
| char [] text = new char [length]; |
| string.getChars (0, length, text, 0); |
| int i = 0, j = 0; |
| char [] result = new char [length * 2]; |
| while (i < length) { |
| switch (text [i]) { |
| case '%': |
| result [j++] = '%'; |
| break; |
| } |
| result [j++] = text [i++]; |
| } |
| return result; |
| } |
| } |