| package org.eclipse.swt.widgets; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * Instances of this class are used 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> |
| * IMPORTANT: This class is intended to be subclassed <em>only</em> |
| * within the SWT implementation. |
| * </p> |
| */ |
| public class MessageBox extends Dialog { |
| |
| String message; |
| |
| // Handles |
| int handle; |
| int label; |
| int buttonOK, buttonCANCEL, buttonYES, buttonNO, buttonABORT, buttonRETRY, buttonIGNORE; |
| |
| int state; |
| |
| /* |
| * === CONSTRUCTORS === |
| */ |
| |
| /** |
| * Constructs a new instance of this class given only its |
| * parent. |
| * <p> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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 |
| * for all SWT dialog classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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, int style) { |
| super(parent, checkStyle(style)); |
| checkSubclass (); |
| } |
| |
| |
| |
| /* |
| * === GET/SET MESSAGE; OPEN === |
| */ |
| |
| /** |
| * Returns 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. |
| * |
| * @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 |
| */ |
| public void setMessage (String string) { |
| 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 () { |
| createHandle(); |
| createMessage(); // includes configuring |
| createActionButtons(); |
| state=0; |
| Callback destroyCallback = new Callback (this, "destroyFunc", 2); |
| int destroyFunc = destroyCallback.getAddress (); |
| byte [] destroy = Converter.wcsToMbcs (null, "delete_event", true); |
| OS.gtk_signal_connect_after (handle, destroy, destroyFunc, handle); |
| showHandle(); |
| while(state==0) OS.gtk_main_iteration(); |
| OS.gtk_widget_destroy(handle); |
| return state; |
| } |
| |
| /* |
| * === Actual handle operations === |
| */ |
| |
| private void createHandle() { |
| handle = OS.gtk_dialog_new(); |
| if (handle==0) SWT.error(SWT.ERROR_NO_HANDLES); |
| if ((style & (SWT.PRIMARY_MODAL|SWT.APPLICATION_MODAL|SWT.SYSTEM_MODAL)) != 0) { |
| OS.gtk_window_set_modal(handle, true); |
| } |
| } |
| private void createMessage() { |
| byte[] bytes = Converter.wcsToMbcs (null, getMessage(), true); |
| label = OS.gtk_label_new (bytes); |
| GtkDialog dialog = new GtkDialog(); |
| OS.memmove (dialog, handle, GtkDialog.sizeof); |
| OS.gtk_box_pack_start (dialog.vbox, label, true, true, 5); // FIXME should we use container_add?? |
| } |
| private void createActionButtons() { |
| if ((style & SWT.OK) != 0) buttonOK = createButton("OK"); |
| if ((style & SWT.CANCEL) != 0) buttonCANCEL = createButton("CANCEL"); |
| |
| if ((style & SWT.YES) != 0) buttonYES = createButton("YES"); |
| if ((style & SWT.NO) != 0) buttonNO = createButton("NO"); |
| |
| if ((style & SWT.ABORT) != 0) buttonABORT = createButton("ABORT"); |
| if ((style & SWT.RETRY) != 0) buttonRETRY = createButton("RETRY"); |
| if ((style & SWT.IGNORE) != 0) buttonIGNORE = createButton("IGNORE"); |
| } |
| private void showHandle() { |
| OS.gtk_widget_show_all (handle); |
| |
| boolean hasTitle=false; |
| String title = getText(); |
| if (title!=null) if (title.length()!=0) hasTitle=true; |
| |
| int decor = 0; |
| if (hasTitle) decor |= OS.GDK_DECOR_TITLE; |
| GtkWidget widget = new GtkWidget(); |
| OS.memmove(widget, handle, GtkWidget.sizeof); |
| int gdkWindow = widget.window; |
| OS.gdk_window_set_decorations(gdkWindow, decor); |
| if (hasTitle) { |
| byte[] bytes = Converter.wcsToMbcs (null, title, true); |
| OS.gtk_window_set_title(handle, bytes); |
| } |
| } |
| int createButton(String buttonName) { |
| System.out.println("Creating button "+buttonName); |
| byte[] bytes = Converter.wcsToMbcs (null, buttonName, true); |
| int buttonHandle = OS.gtk_button_new_with_label(bytes); |
| GtkDialog dialog = new GtkDialog(); |
| OS.memmove (dialog, handle, GtkDialog.sizeof); |
| OS.gtk_box_pack_start (dialog.action_area, buttonHandle, true, true, 0); |
| hookSelection(buttonHandle); |
| return buttonHandle; |
| } |
| private void hookSelection(int h) { |
| byte [] clicked = Converter.wcsToMbcs (null, "clicked", true); |
| |
| Callback okCallback = new Callback (this, "activateFunc", 2); |
| int okFunc = okCallback.getAddress (); |
| OS.gtk_signal_connect (h, clicked, okFunc, h); |
| |
| } |
| 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; |
| } |
| int activateFunc(int widget, int callData) { |
| if (widget==buttonOK) { state=SWT.OK; return 0; } |
| if (widget==buttonCANCEL) { state=SWT.CANCEL; return 0; } |
| if (widget==buttonYES) { state=SWT.YES; return 0; } |
| if (widget==buttonNO) { state=SWT.NO; return 0; } |
| if (widget==buttonABORT) { state=SWT.ABORT; return 0; } |
| if (widget==buttonRETRY) { state=SWT.RETRY; return 0; } |
| if (widget==buttonIGNORE) { state=SWT.IGNORE; return 0; } |
| return 0; |
| } |
| /* |
| * We need this because some WMs will give us a cross even when |
| * we specifically ask it not to. |
| */ |
| int destroyFunc(int widget, int callData) { |
| return 1; |
| } |
| } |