Mercurial > projects > dwt-win
view dwt/widgets/MessageBox.d @ 213:36f5cb12e1a2
Update to SWT 3.4M7
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 17 May 2008 17:34:28 +0200 |
parents | ab60f3309436 |
children | fd9c62a2998e |
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/******************************************************************************* * Copyright (c) 2000, 2007 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.widgets.MessageBox; import dwt.DWT; import dwt.DWTException; import dwt.internal.win32.OS; import dwt.widgets.Dialog; import dwt.widgets.Shell; import dwt.widgets.Display; import dwt.dwthelper.utils; /** * 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 DWT implementation. * </p> */ public class MessageBox : Dialog { alias Dialog.checkStyle checkStyle; String message = ""; private bool allowNullParent = false; /** * 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 DWTException <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 this (Shell parent) { this (parent, DWT.OK | DWT.ICON_INFORMATION | DWT.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>DWT</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>DWT</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 DWTException <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 this (Shell parent, int style) { super (parent, checkStyle (parent, checkStyle (style))); checkSubclass (); } /++ + DWT extension, a MessageBox with no parent +/ public this (int style) { allowNullParent = true; this( null, style ); } // PORT // actually, the parent can be null override void checkParent (Shell parent){ if( !allowNullParent ){ super.checkParent( parent ); } } static int checkStyle (int style) { int mask = (DWT.YES | DWT.NO | DWT.OK | DWT.CANCEL | DWT.ABORT | DWT.RETRY | DWT.IGNORE); int bits = style & mask; if (bits is DWT.OK || bits is DWT.CANCEL || bits is (DWT.OK | DWT.CANCEL)) return style; if (bits is DWT.YES || bits is DWT.NO || bits is (DWT.YES | DWT.NO) || bits is (DWT.YES | DWT.NO | DWT.CANCEL)) return style; if (bits is (DWT.RETRY | DWT.CANCEL) || bits is (DWT.ABORT | DWT.RETRY | DWT.IGNORE)) return style; style = (style & ~mask) | DWT.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. DWT.OK, DWT.CANCEL, etc.) * * @exception DWTException <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 & DWT.OK) is DWT.OK) buttonBits = OS.MB_OK; if ((style & (DWT.OK | DWT.CANCEL)) is (DWT.OK | DWT.CANCEL)) buttonBits = OS.MB_OKCANCEL; if ((style & (DWT.YES | DWT.NO)) is (DWT.YES | DWT.NO)) buttonBits = OS.MB_YESNO; if ((style & (DWT.YES | DWT.NO | DWT.CANCEL)) is (DWT.YES | DWT.NO | DWT.CANCEL)) buttonBits = OS.MB_YESNOCANCEL; if ((style & (DWT.RETRY | DWT.CANCEL)) is (DWT.RETRY | DWT.CANCEL)) buttonBits = OS.MB_RETRYCANCEL; if ((style & (DWT.ABORT | DWT.RETRY | DWT.IGNORE)) is (DWT.ABORT | DWT.RETRY | DWT.IGNORE)) buttonBits = OS.MB_ABORTRETRYIGNORE; if (buttonBits is 0) buttonBits = OS.MB_OK; int iconBits = 0; if ((style & DWT.ICON_ERROR) !is 0) iconBits = OS.MB_ICONERROR; if ((style & DWT.ICON_INFORMATION) !is 0) iconBits = OS.MB_ICONINFORMATION; if ((style & DWT.ICON_QUESTION) !is 0) iconBits = OS.MB_ICONQUESTION; if ((style & DWT.ICON_WARNING) !is 0) iconBits = OS.MB_ICONWARNING; if ((style & DWT.ICON_WORKING) !is 0) iconBits = OS.MB_ICONINFORMATION; /* Only MB_APPLMODAL is supported on WinCE */ int modalBits = 0; static if (OS.IsWinCE) { if ((style & (DWT.PRIMARY_MODAL | DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) !is 0) { modalBits = OS.MB_APPLMODAL; } } else { if ((style & DWT.PRIMARY_MODAL) !is 0) modalBits = OS.MB_APPLMODAL; if ((style & DWT.APPLICATION_MODAL) !is 0) modalBits = OS.MB_TASKMODAL; if ((style & DWT.SYSTEM_MODAL) !is 0) modalBits = OS.MB_SYSTEMMODAL; } int bits = buttonBits | iconBits | modalBits; if ((style & DWT.RIGHT_TO_LEFT) !is 0) bits |= OS.MB_RTLREADING; if ((style & (DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT)) is 0) { if (parent !is null && (parent.style & DWT.MIRRORED) !is 0) { bits |= OS.MB_RTLREADING; } } /* * 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) !is 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. */ HWND hwndOwner = parent !is null ? parent.handle : null; Dialog oldModal = null; Display display = null; if ((bits & OS.MB_TASKMODAL) !is 0) { display = ( allowNullParent && parent is null ) ? Display.getCurrent() : parent.getDisplay (); oldModal = display.getModalDialog (); display.setModalDialog (this); } /* Open the message box */ /* Use the character encoding for the default locale */ TCHAR[] buffer1 = StrToTCHARs (0, message, true); TCHAR[] buffer2 = StrToTCHARs (0, title, true); int code = OS.MessageBox (hwndOwner, buffer1.ptr, buffer2.ptr, bits); /* Clear the temporarily dialog modal parent */ if ((bits & OS.MB_TASKMODAL) !is 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 !is 0) OS.UpdateWindow (hwndOwner); /* Compute and return the result */ if (code !is 0) { int type = bits & 0x0F; if (type is OS.MB_OK) return DWT.OK; if (type is OS.MB_OKCANCEL) { return (code is OS.IDOK) ? DWT.OK : DWT.CANCEL; } if (type is OS.MB_YESNO) { return (code is OS.IDYES) ? DWT.YES : DWT.NO; } if (type is OS.MB_YESNOCANCEL) { if (code is OS.IDYES) return DWT.YES; if (code is OS.IDNO) return DWT.NO; return DWT.CANCEL; } if (type is OS.MB_RETRYCANCEL) { return (code is OS.IDRETRY) ? DWT.RETRY : DWT.CANCEL; } if (type is OS.MB_ABORTRETRYIGNORE) { if (code is OS.IDRETRY) return DWT.RETRY; if (code is OS.IDABORT) return DWT.ABORT; return DWT.IGNORE; } } return DWT.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 is null) error (DWT.ERROR_NULL_ARGUMENT); message = string; } /++ + DWT extension +/ public static int showMessageBox(String str, String title, Shell shell, int style) { MessageBox msgBox = (shell is null ) ? new MessageBox( style ) : new MessageBox(shell, style); msgBox.setMessage(str); if(title !is null){ msgBox.setText(title); } return msgBox.open(); } /// DWT extension public static int showInfo(String str, String title = null, Shell shell = null) { return showMessageBox( str, title, shell, DWT.OK | DWT.ICON_INFORMATION ); } /// DWT extension alias showInfo showInformation; /// DWT extension public static int showWarning(String str, String title = null, Shell shell = null) { return showMessageBox( str, title, shell, DWT.OK | DWT.ICON_WARNING ); } /// DWT extension public static int showError(String str, String title = null, Shell shell = null) { return showMessageBox( str, title, shell, DWT.OK | DWT.ICON_ERROR ); } }