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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/MessageBox.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/MessageBox.java | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/MessageBox.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/MessageBox.java new file mode 100755 index 0000000000..b151ed404b --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/MessageBox.java @@ -0,0 +1,265 @@ +/******************************************************************************* + * 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.win32.*; +import org.eclipse.swt.*; + +/** + * 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 intended to be subclassed <em>only</em> + * within the SWT implementation. + * </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 = ""; + +/** + * 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 (); +} + +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; +} + +/** + * 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 MessageBox style */ + int buttonBits = 0; + if ((style & SWT.OK) == SWT.OK) buttonBits = OS.MB_OK; + if ((style & (SWT.OK | SWT.CANCEL)) == (SWT.OK | SWT.CANCEL)) buttonBits = OS.MB_OKCANCEL; + if ((style & (SWT.YES | SWT.NO)) == (SWT.YES | SWT.NO)) buttonBits = OS.MB_YESNO; + if ((style & (SWT.YES | SWT.NO | SWT.CANCEL)) == (SWT.YES | SWT.NO | SWT.CANCEL)) buttonBits = OS.MB_YESNOCANCEL; + if ((style & (SWT.RETRY | SWT.CANCEL)) == (SWT.RETRY | SWT.CANCEL)) buttonBits = OS.MB_RETRYCANCEL; + if ((style & (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) == (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) buttonBits = OS.MB_ABORTRETRYIGNORE; + if (buttonBits == 0) buttonBits = OS.MB_OK; + + int iconBits = 0; + if ((style & SWT.ICON_ERROR) != 0) iconBits = OS.MB_ICONERROR; + if ((style & SWT.ICON_INFORMATION) != 0) iconBits = OS.MB_ICONINFORMATION; + if ((style & SWT.ICON_QUESTION) != 0) iconBits = OS.MB_ICONQUESTION; + if ((style & SWT.ICON_WARNING) != 0) iconBits = OS.MB_ICONWARNING; + if ((style & SWT.ICON_WORKING) != 0) iconBits = OS.MB_ICONINFORMATION; + + /* Only MB_APPLMODAL is supported on WinCE */ + int modalBits = 0; + if (OS.IsWinCE) { + if ((style & (SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) != 0) { + modalBits = OS.MB_APPLMODAL; + } + } else { + if ((style & SWT.PRIMARY_MODAL) != 0) modalBits = OS.MB_APPLMODAL; + if ((style & SWT.APPLICATION_MODAL) != 0) modalBits = OS.MB_TASKMODAL; + if ((style & SWT.SYSTEM_MODAL) != 0) modalBits = OS.MB_SYSTEMMODAL; + } + + int bits = buttonBits | iconBits | modalBits; + if ((style & SWT.RIGHT_TO_LEFT) != 0) bits |= OS.MB_RTLREADING | OS.MB_RIGHT; + if ((style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT)) == 0) { + if (parent != null && (parent.style & SWT.MIRRORED) != 0) { + bits |= OS.MB_RTLREADING | OS.MB_RIGHT; + } + } + + /* + * Feature in Windows. System modal is not supported + * on Windows 95 and NT. The fix is to convert system + * modal to task modal. + */ + if ((bits & OS.MB_SYSTEMMODAL) != 0) { + bits |= OS.MB_TASKMODAL; + bits &= ~OS.MB_SYSTEMMODAL; + /* Force a system modal message box to the front */ + bits |= OS.MB_TOPMOST; + } + + /* + * Feature in Windows. In order for MB_TASKMODAL to work, + * the parent HWND of the MessageBox () call must be NULL. + * If the parent is not NULL, MB_TASKMODAL behaves the + * same as MB_APPLMODAL. The fix to set the parent HWND + * anyway and not rely on MB_MODAL to work by making the + * parent be temporarily modal. + */ + int /*long*/ hwndOwner = parent != null ? parent.handle : 0; + Dialog oldModal = null; + Display display = null; + if ((bits & OS.MB_TASKMODAL) != 0) { + display = parent.getDisplay (); + oldModal = display.getModalDialog (); + display.setModalDialog (this); + } + + /* Open the message box */ + /* Use the character encoding for the default locale */ + TCHAR buffer1 = new TCHAR (0, message, true); + TCHAR buffer2 = new TCHAR (0, title, true); + int code = OS.MessageBox (hwndOwner, buffer1, buffer2, bits); + + /* Clear the temporarily dialog modal parent */ + if ((bits & OS.MB_TASKMODAL) != 0) { + display.setModalDialog (oldModal); + } + + /* + * This code is intentionally commented. On some + * platforms, the owner window is repainted right + * away when a dialog window exits. This behavior + * is currently unspecified. + */ +// if (hwndOwner != 0) OS.UpdateWindow (hwndOwner); + + /* Compute and return the result */ + if (code != 0) { + int type = bits & 0x0F; + if (type == OS.MB_OK) return SWT.OK; + if (type == OS.MB_OKCANCEL) { + return (code == OS.IDOK) ? SWT.OK : SWT.CANCEL; + } + if (type == OS.MB_YESNO) { + return (code == OS.IDYES) ? SWT.YES : SWT.NO; + } + if (type == OS.MB_YESNOCANCEL) { + if (code == OS.IDYES) return SWT.YES; + if (code == OS.IDNO) return SWT.NO; + return SWT.CANCEL; + } + if (type == OS.MB_RETRYCANCEL) { + return (code == OS.IDRETRY) ? SWT.RETRY : SWT.CANCEL; + } + if (type == OS.MB_ABORTRETRYIGNORE) { + if (code == OS.IDRETRY) return SWT.RETRY; + if (code == OS.IDABORT) return SWT.ABORT; + return SWT.IGNORE; + } + } + return SWT.CANCEL; +} + +/** + * 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; +} + +} |