| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.motif.*;
|
| import org.eclipse.swt.*;
|
|
|
| /**
|
| * Instances of this class allow the user to navigate
|
| * the file system and select a directory.
|
| * <p>
|
| * IMPORTANT: This class is intended to be subclassed <em>only</em>
|
| * within the SWT implementation.
|
| * </p>
|
| */ |
| public class DirectoryDialog extends Dialog {
|
| String filterPath = "";
|
| boolean cancel = true;
|
| String message = "";
|
| /**
|
| * 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 DirectoryDialog (Shell parent) {
|
| this (parent, SWT.PRIMARY_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. |
| * </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 DirectoryDialog (Shell parent, int style) {
|
| super (parent, style);
|
| checkSubclass ();
|
| }
|
| int activate (int widget, int client, int call) {
|
| cancel = client == OS.XmDIALOG_CANCEL_BUTTON;
|
| OS.XtUnmanageChild (widget);
|
| return 0;
|
| }
|
| /**
|
| * Returns the path which the dialog will use to filter
|
| * the directories it shows.
|
| *
|
| * @return the filter path
|
| */ |
| public String getFilterPath () {
|
| return filterPath;
|
| }
|
| /**
|
| * 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;
|
| }
|
| /**
|
| * Makes the dialog visible and brings it to the front
|
| * of the display.
|
| *
|
| * @return a string describing the absolute path of the selected directory,
|
| * or null if the dialog was cancelled or an error occurred
|
| *
|
| * @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 String open () {
|
|
|
| /* Get the parent */
|
| boolean destroyContext;
|
| Display appContext = Display.getCurrent ();
|
| if (destroyContext = (appContext == null)) appContext = new Display ();
|
| int display = appContext.xDisplay;
|
| int parentHandle = appContext.shellHandle;
|
| if ((parent != null) && (parent.getDisplay () == appContext)) {
|
| if (OS.IsAIX) parent.realizeWidget (); /* Fix for bug 17507 */
|
| parentHandle = parent.shellHandle;
|
| }
|
|
|
| /* 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 = " ";
|
|
|
| /* Use the character encoding for the default locale */
|
| byte [] buffer1 = Converter.wcsToMbcs (null, string, true);
|
| int xmStringPtr1 = OS.XmStringParseText (
|
| buffer1,
|
| 0,
|
| OS.XmFONTLIST_DEFAULT_TAG,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| 0);
|
|
|
| /* Compute the filter */
|
| /* Use the character encoding for the default locale */
|
| byte [] buffer2 = Converter.wcsToMbcs (null, "*", true);
|
| int xmStringPtr2 = OS.XmStringParseText (
|
| buffer2,
|
| 0,
|
| OS.XmFONTLIST_DEFAULT_TAG,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| 0);
|
|
|
| /* Compute the filter path */
|
| if (filterPath == null) filterPath = "";
|
| /* Use the character encoding for the default locale */
|
| byte [] buffer3 = Converter.wcsToMbcs (null, filterPath, true);
|
| int xmStringPtr3 = OS.XmStringParseText (
|
| buffer3,
|
| 0,
|
| OS.XmFONTLIST_DEFAULT_TAG,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| 0);
|
|
|
| /* Use the character encoding for the default locale */
|
| byte [] buffer7 = Converter.wcsToMbcs (null, "Selection", true);
|
| int xmStringPtr4 = OS.XmStringParseText (
|
| buffer7,
|
| 0,
|
| OS.XmFONTLIST_DEFAULT_TAG,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| 0);
|
|
|
| /* Create the dialog */
|
| int [] argList1 = {
|
| OS.XmNresizePolicy, OS.XmRESIZE_NONE,
|
| OS.XmNdialogStyle, OS.XmDIALOG_PRIMARY_APPLICATION_MODAL,
|
| OS.XmNwidth, OS.XDisplayWidth (display, OS.XDefaultScreen (display)) * 4 / 9,
|
| OS.XmNdialogTitle, xmStringPtr1,
|
| OS.XmNpattern, xmStringPtr2,
|
| OS.XmNdirectory, xmStringPtr3,
|
| OS.XmNpathMode, OS.XmPATH_MODE_FULL,
|
| OS.XmNfilterLabelString, xmStringPtr4
|
| };
|
|
|
| /*
|
| * Feature in Linux. For some reason, the XmCreateFileSelectionDialog()
|
| * will not accept NULL for the widget name. This works fine on the other
|
| * Motif platforms and in the other XmCreate calls on Linux. The fix is
|
| * to pass in a NULL terminated string, not a NULL pointer.
|
| */
|
| byte [] name = new byte [] {0};
|
| int dialog = OS.XmCreateFileSelectionDialog (parentHandle, name, argList1, argList1.length / 2);
|
| int child = OS.XmFileSelectionBoxGetChild (dialog, OS.XmDIALOG_HELP_BUTTON);
|
| if (child != 0) OS.XtUnmanageChild (child);
|
| child = OS.XmFileSelectionBoxGetChild (dialog, OS.XmDIALOG_LIST);
|
| if (child != 0) {
|
| int parent2 = OS.XtParent(child);
|
| if (parent2 !=0) OS.XtUnmanageChild (parent2);
|
| }
|
| child = OS.XmFileSelectionBoxGetChild (dialog, OS.XmDIALOG_LIST_LABEL);
|
| if (child != 0) OS.XtUnmanageChild (child);
|
| child = OS.XmFileSelectionBoxGetChild (dialog, OS.XmDIALOG_TEXT);
|
| if (child != 0) OS.XtUnmanageChild (child);
|
| child = OS.XmFileSelectionBoxGetChild (dialog, OS.XmDIALOG_SELECTION_LABEL);
|
| if (child != 0) OS.XtUnmanageChild (child);
|
| OS.XmStringFree (xmStringPtr1);
|
| OS.XmStringFree (xmStringPtr2);
|
| OS.XmStringFree (xmStringPtr3);
|
| OS.XmStringFree (xmStringPtr4);
|
|
|
| // Add label widget for message text.
|
| /* Use the character encoding for the default locale */
|
| byte [] buffer4 = Converter.wcsToMbcs (null, message, true);
|
| int xmString1 = OS.XmStringGenerate(buffer4, null, OS.XmCHARSET_TEXT, null);
|
| int [] argList = {
|
| OS.XmNlabelType, OS.XmSTRING,
|
| OS.XmNlabelString, xmString1
|
| };
|
| int textArea = OS.XmCreateLabel(dialog, name, argList, argList.length/2);
|
| OS.XtManageChild(textArea);
|
| OS.XmStringFree (xmString1);
|
|
|
| /* Hook the callbacks. */
|
| Callback callback = new Callback (this, "activate", 3);
|
| int address = callback.getAddress ();
|
| OS.XtAddCallback (dialog, OS.XmNokCallback, address, OS.XmDIALOG_OK_BUTTON);
|
| OS.XtAddCallback (dialog, OS.XmNcancelCallback, address, OS.XmDIALOG_CANCEL_BUTTON);
|
|
|
| /* Open the dialog and dispatch events. */
|
| cancel = true;
|
| OS.XtManageChild (dialog);
|
|
|
| // Should be a pure OS message loop (no SWT AppContext)
|
| while (OS.XtIsRealized (dialog) && OS.XtIsManaged (dialog))
|
| if (!appContext.readAndDispatch ()) appContext.sleep ();
|
|
|
| /* Set the new path, file name and filter. */
|
| String directoryPath="";
|
| if (!cancel) {
|
| int [] argList2 = {OS.XmNdirMask, 0};
|
| OS.XtGetValues (dialog, argList2, argList2.length / 2);
|
| int xmString3 = argList2 [1];
|
| int ptr = OS.XmStringUnparse (
|
| xmString3,
|
| null,
|
| OS.XmCHARSET_TEXT,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| OS.XmOUTPUT_ALL);
|
| if (ptr != 0) {
|
| int length = OS.strlen (ptr);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, ptr, length);
|
| OS.XtFree (ptr);
|
| /* Use the character encoding for the default locale */
|
| directoryPath = new String (Converter.mbcsToWcs (null, buffer));
|
| }
|
| OS.XmStringFree (xmString3);
|
| int length = directoryPath.length ();
|
| if (length != 0) {
|
| if (directoryPath.charAt (length -1) == '/') {
|
| directoryPath = directoryPath.substring (0, length - 1);
|
| } else {
|
| if (length > 1 && directoryPath.charAt (length - 2) == '/' && directoryPath.charAt (length - 1) == '*') {
|
| directoryPath = directoryPath.substring (0, length - 2);
|
| }
|
| }
|
| }
|
| }
|
|
|
| /* Destroy the dialog and update the display. */
|
| if (OS.XtIsRealized (dialog)) OS.XtDestroyWidget (dialog);
|
| if (destroyContext) appContext.dispose ();
|
| callback.dispose ();
|
|
|
| if (cancel) return null;
|
| return directoryPath;
|
| }
|
| /**
|
| * Sets the path which the dialog will use to filter
|
| * the directories it shows to the argument, which may be
|
| * null.
|
| *
|
| * @param string the filter path
|
| */ |
| public void setFilterPath (String string) {
|
| filterPath = string;
|
| }
|
| /**
|
| * 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;
|
| }
|
| }
|
