org.eclipse.swt.widgets.DirectoryDialog Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2012 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
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.cocoa.*;
/**
* Instances of this class allow the user to navigate
* the file system and select a directory.
*
* - Styles:
* - (none)
* - Events:
* - (none)
*
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see DirectoryDialog snippets
* @see SWT Example: ControlExample, Dialog tab
* @see Sample code and further information
* @noextend This class is not intended to be subclassed by clients.
*/
public class DirectoryDialog extends Dialog {
Callback completion_handler_callback;
NSOpenPanel panel;
String directoryPath;
String message = "", filterPath = "";
/**
* 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
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*/
public DirectoryDialog (Shell parent) {
this (parent, SWT.APPLICATION_MODAL);
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
*
* The style value is either one of the style constants defined in
* class SWT
which is applicable to instances of this
* class, or must be built by bitwise OR'ing together
* (that is, using the int
"|" operator) two or more
* of those SWT
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
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*/
public DirectoryDialog (Shell parent, int style) {
super (parent, checkStyle (parent, style));
if (Display.getSheetEnabled ()) {
if (parent != null && (style & SWT.SHEET) != 0) this.style |= SWT.SHEET;
}
checkSubclass ();
}
long _completionHandler (long result) {
handleResponse(result);
return result;
}
/**
* Returns the path which the dialog will use to filter
* the directories it shows.
*
* @return the filter path
*
* @see #setFilterPath
*/
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;
}
void handleResponse (long response) {
if (parent != null && (style & SWT.SHEET) != 0) {
NSApplication.sharedApplication().stopModal();
}
Display display = parent != null ? parent.getDisplay() : Display.getCurrent();
display.setModalDialog(null);
if (response == OS.NSFileHandlingPanelOKButton) {
NSString filename = panel.filename();
directoryPath = filterPath = filename.getString();
}
releaseHandles();
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the dialog has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog
*
*/
public String open () {
directoryPath = null;
panel = NSOpenPanel.openPanel();
/*
* This line is intentionally commented. Don't show hidden files forcefully,
* instead allow Directory dialog to use the system preference.
*/
// OS.objc_msgSend(panel.id, OS.sel_setShowsHiddenFiles_, true);
panel.setCanCreateDirectories(true);
panel.setAllowsMultipleSelection((style & SWT.MULTI) != 0);
panel.setTitle(NSString.stringWith(title != null ? title : ""));
panel.setMessage(NSString.stringWith(message != null ? message : ""));
panel.setCanChooseFiles(false);
panel.setCanChooseDirectories(true);
panel.setTreatsFilePackagesAsDirectories(true);
NSString dir = (filterPath != null && filterPath.length() > 0) ? NSString.stringWith(filterPath) : null;
panel.setDirectoryURL(NSURL.fileURLWithPath(dir));
Display display = parent != null ? parent.getDisplay() : Display.getCurrent();
display.setModalDialog(this, panel);
if (parent != null && (style & SWT.SHEET) != 0) {
completion_handler_callback = new Callback(this, "_completionHandler", 1);
long handler = completion_handler_callback.getAddress();
if (handler == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
OS.beginSheetModalForWindow(panel, parent.view.window(), handler);
NSApplication.sharedApplication().runModalForWindow(parent.view.window());
} else {
long response = panel.runModal();
handleResponse(response);
}
// options.optionFlags = OS.kNavSupportPackages | OS.kNavAllowOpenPackages | OS.kNavAllowInvisibleFiles;
return directoryPath;
}
void releaseHandles () {
if (completion_handler_callback != null) {
completion_handler_callback.dispose();
completion_handler_callback = null;
}
panel = null;
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the string is null
*
*/
public void setMessage (String string) {
if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
message = string;
}
/**
* Sets the path that the dialog will use to filter
* the directories it shows to the argument, which may
* be null. If the string is null, then the operating
* system's default filter path will be used.
*
* Note that the path string is platform dependent.
* For convenience, either '/' or '\' can be used
* as a path separator.
*
*
* @param string the filter path
*/
public void setFilterPath (String string) {
filterPath = string;
}
}