| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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.internal.*; |
| import org.eclipse.swt.internal.motif.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * 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 { |
| int button; |
| String message = ""; //$NON-NLS-1$ |
| |
| /** |
| * 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 (); |
| } |
| int activate (int widget, int client, int call) { |
| OS.XtUnmanageChild (widget); |
| button = client; |
| return 0; |
| } |
| 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; |
| } |
| int createHandle (int parentHandle, int [] argList) { |
| if ((style & SWT.ICON_ERROR) != 0) return OS.XmCreateErrorDialog (parentHandle, null, argList, argList.length / 2); |
| if ((style & SWT.ICON_INFORMATION) != 0) return OS.XmCreateInformationDialog (parentHandle, null, argList, argList.length / 2); |
| if ((style & SWT.ICON_QUESTION) != 0) return OS.XmCreateQuestionDialog (parentHandle, null, argList, argList.length / 2); |
| if ((style & SWT.ICON_WARNING) != 0) return OS.XmCreateWarningDialog (parentHandle, null, argList, argList.length / 2); |
| if ((style & SWT.ICON_WORKING) != 0) return OS.XmCreateWorkingDialog (parentHandle, null, argList, argList.length / 2); |
| return OS.XmCreateMessageDialog (parentHandle, null, argList, argList.length / 2); |
| } |
| |
| /** |
| * 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; |
| } |
| |
| /** |
| * 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 () { |
| /* Compute the dialog title */ |
| /* |
| * Feature in Motif. It is not possible to set a shell |
| * title to an empty string. The fix is to set the title |
| * to be a single space. |
| */ |
| String string = title; |
| if (string.length () == 0) string = " "; //$NON-NLS-1$ |
| /* Use the character encoding for the default locale */ |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| int xmStringPtr = OS.XmStringParseText ( |
| buffer, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* |
| * Feature in Motif. The modal values are only hints |
| * to the window manager. For example Enlightenment treats all modes |
| * as SWT.APPLICATION_MODAL. The generic Motif |
| * Window Manager honours all modes. |
| */ |
| int dialogStyle = OS.XmDIALOG_MODELESS; |
| if ((style & SWT.PRIMARY_MODAL) != 0) dialogStyle = OS.XmDIALOG_PRIMARY_APPLICATION_MODAL; |
| if ((style & SWT.APPLICATION_MODAL) != 0) dialogStyle = OS.XmDIALOG_FULL_APPLICATION_MODAL; |
| if ((style & SWT.SYSTEM_MODAL) != 0) dialogStyle = OS.XmDIALOG_SYSTEM_MODAL; |
| if (dialogStyle == OS.XmDIALOG_MODELESS) { |
| dialogStyle = OS.XmDIALOG_PRIMARY_APPLICATION_MODAL; |
| } |
| boolean defaultPos = parent.isVisible (); |
| int [] argList = { |
| OS.XmNnoResize, 1, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNdialogStyle, dialogStyle, |
| OS.XmNdialogTitle, xmStringPtr, |
| OS.XmNdefaultPosition, defaultPos ? 1 : 0, |
| }; |
| int parentHandle = parent.shellHandle; |
| int dialog = createHandle (parentHandle, argList); |
| if (dialog == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.XmStringFree (xmStringPtr); |
| setMessage (dialog); |
| setButtons (dialog); |
| |
| /* Hook the callbacks. */ |
| Callback callback = new Callback (this, "activate", 3); //$NON-NLS-1$ |
| int address = callback.getAddress (); |
| if (address == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| OS.XtAddCallback (dialog, OS.XmNokCallback, address, OS.XmDIALOG_OK_BUTTON); |
| OS.XtAddCallback (dialog, OS.XmNcancelCallback, address, OS.XmDIALOG_CANCEL_BUTTON); |
| OS.XtAddCallback (dialog, OS.XmNhelpCallback, address, OS.XmDIALOG_HELP_BUTTON); |
| |
| /* Open the dialog and dispatch events. */ |
| if (!defaultPos) { |
| OS.XtRealizeWidget (dialog); |
| int[] argList1 = new int[] { |
| OS.XmNwidth, 0, |
| OS.XmNheight, 0, |
| }; |
| OS.XtGetValues (dialog, argList1, argList1.length / 2); |
| Monitor monitor = parent.getMonitor (); |
| Rectangle bounds = monitor.getBounds (); |
| int x = bounds.x + (bounds.width - argList1 [1]) / 2; |
| int y = bounds.y + (bounds.height - argList1 [3]) / 2; |
| int[] argList2 = new int[] { |
| OS.XmNx, x, |
| OS.XmNy, y, |
| }; |
| OS.XtSetValues (dialog, argList2, argList2.length / 2); |
| } |
| OS.XtManageChild (dialog); |
| |
| // Should be a pure OS message loop (no SWT AppContext) |
| Display display = parent.display; |
| while (OS.XtIsRealized (dialog) && OS.XtIsManaged (dialog)) |
| if (!display.readAndDispatch()) display.sleep (); |
| |
| /* Destroy the dialog and update the display. */ |
| if (OS.XtIsRealized (dialog)) OS.XtDestroyWidget (dialog); |
| callback.dispose (); |
| |
| if ((style & (SWT.YES | SWT.NO | SWT.CANCEL)) == (SWT.YES | SWT.NO | SWT.CANCEL)) { |
| if (button == OS.XmDIALOG_OK_BUTTON) return SWT.YES; |
| if (button == OS.XmDIALOG_CANCEL_BUTTON) return SWT.NO; |
| return SWT.CANCEL; |
| } |
| if ((style & (SWT.YES | SWT.NO)) == (SWT.YES | SWT.NO)) { |
| return (button == OS.XmDIALOG_OK_BUTTON) ? SWT.YES : SWT.NO; |
| } |
| if ((style & (SWT.OK | SWT.CANCEL)) == (SWT.OK | SWT.CANCEL)) { |
| return (button == OS.XmDIALOG_OK_BUTTON) ? SWT.OK : SWT.CANCEL; |
| } |
| if ((style & SWT.OK) == SWT.OK) return SWT.OK; |
| if ((style & (SWT.RETRY | SWT.CANCEL)) == (SWT.RETRY | SWT.CANCEL)) { |
| return (button == OS.XmDIALOG_OK_BUTTON) ? SWT.RETRY : SWT.CANCEL; |
| } |
| if ((style & (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) == (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) { |
| if (button == OS.XmDIALOG_OK_BUTTON) return SWT.ABORT; |
| if (button == OS.XmDIALOG_CANCEL_BUTTON) return SWT.RETRY; |
| return SWT.IGNORE; |
| } |
| return SWT.CANCEL; |
| } |
| void setButtons (int dialogHandle) { |
| |
| /* Get the button children */ |
| OS.XmMessageBoxGetChild (dialogHandle, OS.XmDIALOG_OK_BUTTON); |
| int cancel = OS.XmMessageBoxGetChild (dialogHandle, OS.XmDIALOG_CANCEL_BUTTON); |
| int help = OS.XmMessageBoxGetChild (dialogHandle, OS.XmDIALOG_HELP_BUTTON); |
| OS.XtUnmanageChild (help); |
| |
| /* Set the button labels */ |
| if ((style & (SWT.OK | SWT.CANCEL)) == (SWT.OK | SWT.CANCEL)) return; |
| if ((style & SWT.OK) == SWT.OK) { |
| OS.XtUnmanageChild (cancel); |
| return; |
| } |
| if ((style & (SWT.YES | SWT.NO | SWT.CANCEL)) == (SWT.YES | SWT.NO | SWT.CANCEL)) { |
| OS.XtManageChild (help); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer1 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Yes"), true); //$NON-NLS-1$ |
| int xmString1 = OS.XmStringParseText ( |
| buffer1, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer2 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_No"), true); //$NON-NLS-1$ |
| int xmString2 = OS.XmStringParseText ( |
| buffer2, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer3 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Cancel"), true); //$NON-NLS-1$ |
| int xmString3 = OS.XmStringParseText ( |
| buffer3, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| int [] argList = {OS.XmNokLabelString, xmString1, OS.XmNcancelLabelString, xmString2, OS.XmNhelpLabelString, xmString3}; |
| OS.XtSetValues (dialogHandle, argList, argList.length / 2); |
| OS.XmStringFree (xmString1); OS.XmStringFree (xmString2); OS.XmStringFree (xmString3); |
| return; |
| } |
| if ((style & (SWT.YES | SWT.NO)) == (SWT.YES | SWT.NO)) { |
| /* Use the character encoding for the default locale */ |
| byte [] buffer1 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Yes"), true); //$NON-NLS-1$ |
| int xmString1 = OS.XmStringParseText ( |
| buffer1, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer2 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_No"), true); //$NON-NLS-1$ |
| int xmString2 = OS.XmStringParseText ( |
| buffer2, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| int [] argList = {OS.XmNokLabelString, xmString1, OS.XmNcancelLabelString, xmString2}; |
| OS.XtSetValues (dialogHandle, argList, argList.length / 2); |
| OS.XmStringFree (xmString1); OS.XmStringFree (xmString2); |
| return; |
| } |
| if ((style & (SWT.RETRY | SWT.CANCEL)) == (SWT.RETRY | SWT.CANCEL)) { |
| /* Use the character encoding for the default locale */ |
| byte [] buffer1 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Retry"), true); //$NON-NLS-1$ |
| int xmString1 = OS.XmStringParseText ( |
| buffer1, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer2 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Cancel"), true); //$NON-NLS-1$ |
| int xmString2 = OS.XmStringParseText ( |
| buffer2, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| int [] argList = {OS.XmNokLabelString, xmString1, OS.XmNcancelLabelString, xmString2}; |
| OS.XtSetValues (dialogHandle, argList, argList.length / 2); |
| OS.XmStringFree (xmString1); OS.XmStringFree (xmString2); |
| return; |
| } |
| if ((style & (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) == (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) { |
| OS.XtManageChild (help); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer1 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Abort"), true); //$NON-NLS-1$ |
| int xmString1 = OS.XmStringParseText ( |
| buffer1, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer2 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Retry"), true); //$NON-NLS-1$ |
| int xmString2 = OS.XmStringParseText ( |
| buffer2, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| /* Use the character encoding for the default locale */ |
| byte [] buffer3 = Converter.wcsToMbcs (null, SWT.getMessage("SWT_Ignore"), true); //$NON-NLS-1$ |
| int xmString3 = OS.XmStringParseText ( |
| buffer3, |
| 0, |
| OS.XmFONTLIST_DEFAULT_TAG, |
| OS.XmCHARSET_TEXT, |
| null, |
| 0, |
| 0); |
| int [] argList = {OS.XmNokLabelString, xmString1, OS.XmNcancelLabelString, xmString2, OS.XmNhelpLabelString, xmString3}; |
| OS.XtSetValues (dialogHandle, argList, argList.length / 2); |
| OS.XmStringFree (xmString1); OS.XmStringFree (xmString2); OS.XmStringFree (xmString3); |
| return; |
| } |
| } |
| void setMessage (int dialogHandle) { |
| String text = message; |
| int label = OS.XmMessageBoxGetChild (dialogHandle, OS.XmDIALOG_MESSAGE_LABEL); |
| if (label != 0) { |
| int [] argList = {OS.XmNfontList, 0}; |
| OS.XtGetValues (label, argList, argList.length / 2); |
| int fontList = argList [1]; |
| if (fontList != 0) { |
| Display display = parent.display; |
| int xDisplay = display.xDisplay; |
| int screen = OS.XDefaultScreen (xDisplay); |
| int width = OS.XDisplayWidth (xDisplay, screen); |
| Font font = Font.motif_new (display, fontList); |
| text = display.wrapText (message, font, width * 3 / 5); |
| } |
| } |
| /* Use the character encoding for the default locale */ |
| byte [] buffer = Converter.wcsToMbcs (null, text, true); |
| int xmString = OS.XmStringGenerate(buffer, null, OS.XmCHARSET_TEXT, null); |
| int [] argList = {OS.XmNmessageString, xmString}; |
| OS.XtSetValues (dialogHandle, argList, argList.length / 2); |
| OS.XmStringFree (xmString); |
| } |
| |
| /** |
| * 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; |
| } |
| } |