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• DirectoryDialog.java

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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.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 {
	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 ();
}

/**
 * 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;
}

/**
 * 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 () {
	String directoryPath = null;
	NSOpenPanel panel = NSOpenPanel.openPanel();

	Display display = parent != null ? parent.getDisplay() : Display.getCurrent();
	/*
	 * 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);
	NSApplication application = NSApplication.sharedApplication();
	if (parent != null && (style & SWT.SHEET) != 0) {
		application.beginSheet(panel, parent.view.window (), null, 0, 0);
	}
	display.setModalDialog(this, panel);
	NSString dir = (filterPath != null && filterPath.length() > 0) ? NSString.stringWith(filterPath) : null;
	long /*int*/ response = panel.runModalForDirectory(dir, null);
	if (parent != null && (style & SWT.SHEET) != 0) {
		application.endSheet(panel, 0);
	}
	display.setModalDialog(null);
	if (response == OS.NSFileHandlingPanelOKButton) {
		NSString filename = panel.filename();
		directoryPath = filterPath = filename.getString();
	}
//	options.optionFlags = OS.kNavSupportPackages | OS.kNavAllowOpenPackages | OS.kNavAllowInvisibleFiles;
	return directoryPath;
}


/**
 * 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;
}
}