| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.photon.*;
|
| import org.eclipse.swt.*;
|
| import org.eclipse.swt.widgets.*;
|
|
|
| /** |
| * 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 = "";
|
| static final String FILTER = "*";
|
|
|
| /** |
| * 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 ();
|
| }
|
|
|
| /** |
| * 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;
|
| }
|
|
|
| /** |
| * 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 () {
|
| int parentHandle = 0;
|
| if (parent != null) parentHandle = parent.shellHandle;
|
| byte [] title = null;
|
| if (this.title != null) title = Converter.wcsToMbcs (null, this.title, true);
|
| byte [] root_dir = null;
|
| if (filterPath != null) {
|
| root_dir = Converter.wcsToMbcs (null, filterPath, true);
|
| }
|
|
|
| /* Compute the filter */
|
| String mask = FILTER;
|
| /*
|
| * Photon does not support filter names.
|
| */
|
| if (filterNames == null) filterNames = new String [0];
|
| /*
|
| * Photon supports only one filter with multiple patterns
|
| * separated by commas.
|
| */
|
| if (filterExtensions == null) filterExtensions = new String [0];
|
| if (filterExtensions.length > 0) {
|
| String comma = ",";
|
| mask = comma;
|
| for (int i=0; i<filterExtensions.length; i++) {
|
| String ext = filterExtensions [i];
|
| int length = ext.length();
|
| int end, start = 0;
|
| do {
|
| int index = end = ext.indexOf(';', start);
|
| if (end < 0) end = length;
|
| String subExt = ext.substring(start, end).trim();
|
| if (subExt.length() > 0) {
|
| subExt += comma;
|
| if (mask.indexOf(comma + subExt) == -1) mask += subExt;
|
| }
|
| start = end + 1;
|
| } while (end < length);
|
| }
|
| mask = mask.substring(1, Math.max(1, mask.length() - 1));
|
| }
|
| byte [] file_spec = Converter.wcsToMbcs (null, mask, true);
|
|
|
| int flags = OS.Pt_FSR_NO_FCHECK;
|
| PtFileSelectionInfo_t info = new PtFileSelectionInfo_t ();
|
| OS.PtFileSelection (parentHandle, null, title, root_dir, file_spec, null, null, null, info, flags);
|
| if (info.ret == OS.Pt_FSDIALOG_BTN2) return null;
|
| int length = 0;
|
| while (length < info.path.length && info.path [length] != 0) length++;
|
| byte [] path = new byte [length];
|
| System.arraycopy (info.path, 0, path, 0, length);
|
| String fullPath = new String (Converter.mbcsToWcs (null, path));
|
| length = fullPath.length ();
|
| if (length != 0) {
|
| int index = length - 1;
|
| while (index >= 0 && (fullPath.charAt (index) != '/')) --index;
|
| fileName = fullPath.substring (index + 1, length);
|
| filterPath = fullPath.substring (0, index);
|
| }
|
| 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;
|
| }
|
|
|
| }
|