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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/FileDialog.java
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+/* FileDialog.java -- A filename selection dialog box
+ Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.awt;
+
+import java.awt.peer.FileDialogPeer;
+import java.io.FilenameFilter;
+import java.io.Serializable;
+
+/**
+ * This class implements a file selection dialog box widget.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @author Tom Tromey (tromey@redhat.com)
+ */
+public class FileDialog extends Dialog implements Serializable
+{
+
+/*
+ * Static Variables
+ */
+
+/**
+ * Indicates that the purpose of the dialog is for opening a file.
+ */
+public static final int LOAD = 0;
+
+/**
+ * Indicates that the purpose of the dialog is for saving a file.
+ */
+public static final int SAVE = 1;
+
+// Serialization constant
+private static final long serialVersionUID = 5035145889651310422L;
+
+/*************************************************************************/
+
+/*
+ * Instance Variables
+ */
+
+/**
+ * @serial The directory for this file dialog.
+ */
+private String dir;
+
+/**
+ * @serial The filename for this file dialog
+ */
+private String file;
+
+/**
+ * @serial The filter for selecting filenames to display
+ */
+private FilenameFilter filter;
+
+/**
+ * @serial The mode of this dialog, either <code>LOAD</code> or
+ * <code>SAVE</code>.
+ */
+private int mode;
+
+/**
+ * The number used to generate the name returned by getName.
+ */
+private static transient long next_file_dialog_number;
+
+/*************************************************************************/
+
+/*
+ * Constructors
+ */
+
+ /**
+ * Initializes a new instance of <code>FileDialog</code> with the specified
+ * parent. This dialog will have no title and will be for loading a file.
+ *
+ * @param parent The parent dialog for this.
+ *
+ * @since 1.5
+ */
+ public FileDialog(Dialog parent)
+ {
+ this(parent, "", LOAD);
+ }
+
+ /**
+ * Initialized a new instance of <code>FileDialog</code> with the
+ * specified parent and title. This dialog will be for opening a file.
+ *
+ * @param parent The parent dialog for this.
+ * @param title The title for this dialog.
+ *
+ * @since 1.5
+ */
+ public FileDialog(Dialog parent, String title)
+ {
+ this(parent, title, LOAD);
+ }
+
+ /**
+ * Initialized a new instance of <code>FileDialog</code> with the specified
+ * parent, title, and mode.
+ *
+ * @param parent The parent dialog for this.
+ * @param title The title for this dialog.
+ * @param mode The mode of the dialog, either <code>LOAD</code> or
+ * <code>SAVE</code>.
+ * @throws IllegalArgumentException - if illegal mode, if
+ * GraphicsEnvironment.isHeadless or if parent is null.
+ *
+ * @since 1.5
+ */
+ public FileDialog(Dialog parent, String title, int mode)
+ {
+ super(parent, title, true);
+
+ // Other IllegalArgumentException cases are taken care of in Window.java
+ if (mode != LOAD && mode != SAVE)
+ throw new IllegalArgumentException (
+ "Mode argument must be either LOAD or SAVE");
+
+ setMode(mode);
+ }
+
+/**
+ * Initializes a new instance of <code>FileDialog</code> with the
+ * specified parent. This dialog will have no title and will be for
+ * loading a file.
+ *
+ * @param parent The parent frame for this dialog.
+ */
+public
+FileDialog(Frame parent)
+{
+ this(parent, "", LOAD);
+}
+
+/*************************************************************************/
+
+/**
+ * Initialized a new instance of <code>FileDialog</code> with the
+ * specified parent and title. This dialog will be for opening a file.
+ *
+ * @param parent The parent frame for this dialog.
+ * @param title The title for this dialog.
+ */
+public
+FileDialog(Frame parent, String title)
+{
+ this(parent, title, LOAD);
+}
+
+/*************************************************************************/
+
+/**
+ * Initialized a new instance of <code>FileDialog</code> with the
+ * specified parent, title, and mode.
+ *
+ * @param parent The parent frame for this dialog.
+ * @param title The title for this dialog.
+ * @param mode The mode of the dialog, either <code>LOAD</code> or
+ * <code>SAVE</code>.
+ *
+ * @exception IllegalArgumentException If an illegal file dialog mode
+ * is supplied.
+ */
+public
+FileDialog(Frame parent, String title, int mode)
+{
+ super(parent, title, true);
+
+ if ((mode != LOAD) && (mode != SAVE))
+ throw new IllegalArgumentException (
+ "Mode argument must be either LOAD or SAVE");
+
+ setMode (mode);
+}
+
+/*************************************************************************/
+
+/*
+ * Instance Methods
+ */
+
+/**
+ * Returns the mode of this dialog, either <code>LOAD</code> or
+ * <code>SAVE</code>.
+ *
+ * @return The mode of this dialog.
+ */
+public int
+getMode()
+{
+ return(mode);
+}
+
+/*************************************************************************/
+
+/**
+ * Sets the mode of this dialog to either <code>LOAD</code> or
+ * <code>SAVE</code>. This method is only effective before the native
+ * peer is created.
+ *
+ * @param mode The new mode of this file dialog.
+ *
+ * @exception IllegalArgumentException If an illegal file dialog mode
+ * is supplied.
+ */
+public void
+setMode(int mode)
+{
+ if ((mode != LOAD) && (mode != SAVE))
+ throw new IllegalArgumentException("Bad mode: " + mode);
+
+ this.mode = mode;
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the directory for this file dialog.
+ *
+ * @return The directory for this file dialog.
+ */
+public String
+getDirectory()
+{
+ return(dir);
+}
+
+/*************************************************************************/
+
+/**
+ * Sets the directory for this file dialog.
+ *
+ * @param dir The new directory for this file dialog.
+ */
+public synchronized void
+setDirectory(String dir)
+{
+ this.dir = dir;
+ if (peer != null)
+ {
+ FileDialogPeer f = (FileDialogPeer) peer;
+ f.setDirectory (dir);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the file that is selected in this dialog.
+ *
+ * @return The file that is selected in this dialog.
+ */
+public String
+getFile()
+{
+ return(file);
+}
+
+/*************************************************************************/
+
+/**
+ * Sets the selected file for this dialog.
+ *
+ * @param file The selected file for this dialog.
+ */
+public synchronized void
+setFile(String file)
+{
+ if ("".equals(file))
+ this.file = null;
+ else
+ this.file = file;
+
+ if (peer != null)
+ {
+ FileDialogPeer f = (FileDialogPeer) peer;
+ f.setFile (file);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the filename filter being used by this dialog.
+ *
+ * @return The filename filter being used by this dialog.
+ */
+public FilenameFilter
+getFilenameFilter()
+{
+ return(filter);
+}
+
+/*************************************************************************/
+
+/**
+ * Sets the filename filter used by this dialog.
+ *
+ * @param filter The new filename filter for this file dialog box.
+ */
+public synchronized void
+setFilenameFilter(FilenameFilter filter)
+{
+ this.filter = filter;
+ if (peer != null)
+ {
+ FileDialogPeer f = (FileDialogPeer) peer;
+ f.setFilenameFilter (filter);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Creates the native peer for this file dialog box.
+ */
+public void
+addNotify()
+{
+ if (peer == null)
+ peer = getToolkit ().createFileDialog (this);
+ super.addNotify ();
+}
+
+/*************************************************************************/
+
+/**
+ * Returns a debugging string for this object.
+ *
+ * @return A debugging string for this object.
+ */
+protected String
+paramString()
+{
+ return ("dir=" + dir + ",file=" + file +
+ ",mode=" + mode + "," + super.paramString());
+}
+
+/**
+ * Generate a unique name for this <code>FileDialog</code>.
+ *
+ * @return A unique name for this <code>FileDialog</code>.
+ */
+String
+generateName()
+{
+ return "filedlg" + getUniqueLong();
+}
+
+private static synchronized long
+getUniqueLong()
+{
+ return next_file_dialog_number++;
+}
+
+} // class FileDialog