| 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.*;
|
|
|
| /** |
| * Instances of this class allow the user to navigate |
| * the file system and select or enter a file name. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SAVE, OPEN, MULTI</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 FileDialog extends Dialog {
|
| String [] filterNames = new String [0];
|
| String [] filterExtensions = new String [0];
|
| String filterPath = "", fileName = "";
|
| String fullPath = "";
|
| boolean cancel = true;
|
|
|
| /** |
| * 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 FileDialog (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 |
| * 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 FileDialog (Shell parent, int style) {
|
| super (parent, style);
|
| checkSubclass ();
|
| }
|
| int cancelFunc (int widget, int callData) {
|
| cancel = true;
|
| OS.gtk_widget_destroy (callData);
|
| return 0;
|
| }
|
| int destroyFunc (int widget, int callData) {
|
| OS.gtk_main_quit ();
|
| return 0;
|
| }
|
| /** |
| * Returns the path of the first file that was |
| * selected in the dialog relative to the filter path, |
| * or null if none is available. |
| * |
| * @return the relative path of the file |
| */ |
| public String getFileName () {
|
| return fileName;
|
| }
|
| /**
|
| * Returns the paths of all files that were selected
|
| * in the dialog relative to the filter path, or null
|
| * if none are available.
|
| *
|
| * @return the relative paths of the files
|
| */
|
| public String [] getFileNames () {
|
| return new String[] {fileName};
|
| }
|
| /** |
| * Returns the file extensions which the dialog will |
| * use to filter the files it shows. |
| * |
| * @return the file extensions filter |
| */ |
| public String [] getFilterExtensions () {
|
| return filterExtensions;
|
| }
|
| /** |
| * Returns the file names which the dialog will |
| * use to filter the files it shows. |
| * |
| * @return the file name filter |
| */ |
| public String [] getFilterNames () {
|
| return filterNames;
|
| }
|
| /** |
| * Returns the path which the dialog will use to filter |
| * the files it shows. |
| * |
| * @return the filter path |
| */ |
| public String getFilterPath () {
|
| return filterPath;
|
| }
|
| int okFunc (int widget, int callData) {
|
| cancel = false;
|
| char separator = System.getProperty ("file.separator").charAt (0);
|
| int lpFilename = OS.gtk_file_selection_get_filename (callData);
|
| int filenameLength = OS.strlen (lpFilename);
|
| byte [] filenameBytes = new byte [filenameLength];
|
| OS.memmove (filenameBytes, lpFilename, filenameLength);
|
| fullPath = new String (Converter.mbcsToWcs (null, filenameBytes));
|
|
|
| /* Calculate fileName and filterPath */
|
| int separatorIndex = fullPath.indexOf (separator);
|
| int index = separatorIndex;
|
| while (index != -1) {
|
| separatorIndex = index;
|
| index = fullPath.indexOf (separator, index + 1);
|
| }
|
| fileName = fullPath.substring (separatorIndex + 1, fullPath.length ());
|
| filterPath = fullPath.substring (0, separatorIndex);
|
| OS.gtk_widget_destroy (callData);
|
| return 0;
|
| }
|
| /** |
| * Makes the dialog visible and brings it to the front |
| * of the display. |
| * |
| * @return a string describing the absolute path of the first selected file, |
| * 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 () {
|
| byte [] titleBytes = Converter.wcsToMbcs (null, title, true);
|
| int handle = OS.gtk_file_selection_new (titleBytes);
|
|
|
| /* Calculate the fully-specified file name and convert to bytes */
|
| StringBuffer stringBuffer = new StringBuffer ();
|
| char separator = System.getProperty ("file.separator").charAt (0);
|
| if (filterPath == null) {
|
| filterPath = "";
|
| } else {
|
| if (filterPath.length () > 0) {
|
| stringBuffer.append (filterPath);
|
| if (filterPath.charAt (filterPath.length () - 1) != separator) {
|
| stringBuffer.append (separator);
|
| }
|
| }
|
| }
|
| if (fileName == null) {
|
| fileName = "";
|
| } else {
|
| stringBuffer.append (fileName);
|
| }
|
| fullPath = stringBuffer.toString ();
|
| byte [] fullPathBytes = Converter.wcsToMbcs (null, fullPath, true);
|
| OS.gtk_file_selection_set_filename (handle, fullPathBytes);
|
|
|
| /* Set the extension */
|
| if (filterNames == null) filterNames = new String [0];
|
| if (filterExtensions == null) filterExtensions = new String [0];
|
| if (filterExtensions.length == 1) {
|
| String ext = filterExtensions [0];
|
| byte [] extBytes = Converter.wcsToMbcs (null, ext, true);
|
| OS.gtk_file_selection_complete (handle, extBytes);
|
| }
|
|
|
| /* Hook callbacks */
|
| Callback destroyCallback = new Callback (this, "destroyFunc", 2);
|
| int destroyFunc = destroyCallback.getAddress ();
|
| byte [] destroy = Converter.wcsToMbcs (null, "destroy", true);
|
| OS.gtk_signal_connect (handle, destroy, destroyFunc, handle);
|
| byte [] clicked = Converter.wcsToMbcs (null, "clicked", true);
|
| Callback okCallback = new Callback (this, "okFunc", 2);
|
| int okFunc = okCallback.getAddress ();
|
| Callback cancelCallback = new Callback (this, "cancelFunc", 2);
|
| int cancelFunc = cancelCallback.getAddress ();
|
| OS.gtk_signal_connect (OS.GTK_FILE_SELECTION_OK_BUTTON(handle), clicked, okFunc, handle);
|
| OS.gtk_signal_connect (OS.GTK_FILE_SELECTION_CANCEL_BUTTON(handle), clicked, cancelFunc, handle);
|
|
|
| fileName = null;
|
| fullPath = null;
|
| filterPath = null;
|
|
|
| /* Show the dialog */
|
| cancel = true;
|
| OS.gtk_widget_show_now (handle);
|
| OS.gtk_main ();
|
|
|
| destroyCallback.dispose ();
|
| okCallback.dispose ();
|
| cancelCallback.dispose ();
|
|
|
| /* Return the full path or null */
|
| if (cancel) return null;
|
| return fullPath;
|
| }
|
| /** |
| * Set the initial filename which the dialog will |
| * select by default when opened to the argument, |
| * which may be null. The name will be prefixed with |
| * the filter path when one is supplied. |
| * |
| * @param string the file name |
| */ |
| public void setFileName (String string) {
|
| fileName = string;
|
| }
|
| /** |
| * Set the file extensions which the dialog will |
| * use to filter the files it shows to the argument, |
| * which may be null. |
| * |
| * @param extensions the file extension filter |
| */ |
| public void setFilterExtensions (String [] extensions) {
|
| filterExtensions = extensions;
|
| }
|
| /** |
| * Sets the file names which the dialog will |
| * use to filter the files it shows to the argument, |
| * which may be null. |
| * |
| * @param names the file name filter |
| */ |
| public void setFilterNames (String [] names) {
|
| filterNames = names;
|
| }
|
| /** |
| * Sets the path which the dialog will use to filter |
| * the files it shows to the argument, which may be |
| * null. |
| * |
| * @param string the filter path |
| */ |
| public void setFilterPath (String string) {
|
| filterPath = string;
|
| }
|
| }
|