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MergeDialog.java
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MergeDialog.java
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/*
DEM -- A Geographic Information System for Line-Of-Sight Radio Communications.
Copyright (C) 1998, 1999 Jeffrey B. Otterson
This program 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
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
For more information, to submit bugs, software changes, etc., please contact
Jeff Otterson / N1KDO
3543 Tritt Springs Way
Marietta, GA 30062
otterson@mindspring.com
*/
import java.awt.Button;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.FileDialog;
import java.awt.Label;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
/**
* a class that provides a dialog to enter data for merging DEMs.
*/
public class MergeDialog extends Dialog implements ActionListener
{
private final String longString = " ";
String inFile1;
String inFile2;
String outFile;
Label lbl_inFile1;
Label lbl_inFile2;
Label lbl_outFile;
DEMmain demMain;
boolean actionOK;
/**
* create a new MergeDialog.
* @param demMain the Frame that owns the application.
*/
public MergeDialog(DEMmain demMain)
{
super(demMain, "Merge DEMs", true);
this.demMain = demMain;
Button btn_set_inFile1;
Button btn_set_inFile2;
Button btn_set_outFile;
Button btn_ok;
Button btn_cancel;
GroupLayout layout = new GroupLayout(1,2);
setLayout(layout);
layout.setInsets(5,5,5,5);
inFile1 = inFile2 = outFile = "";
actionOK = false;
layout.setAnchor(GroupLayout.CENTER);
Panel pnl_fileNames = new Panel(new GroupLayout(3,5));
pnl_fileNames.add(new Label(""));
pnl_fileNames.add(new Label("Select the files to merge from."));
pnl_fileNames.add(new Label(""));
pnl_fileNames.add(new Label("South/West File"));
pnl_fileNames.add(lbl_inFile1 = new Label(longString));
lbl_inFile1.setBackground(Color.white);
pnl_fileNames.add(btn_set_inFile1 = new Button("Set"));
pnl_fileNames.add(new Label("North/East File"));
pnl_fileNames.add(lbl_inFile2 = new Label(longString));
lbl_inFile2.setBackground(Color.white);
pnl_fileNames.add(btn_set_inFile2 = new Button("Set"));
pnl_fileNames.add(new Label(""));
pnl_fileNames.add(new Label("Select the output file."));
pnl_fileNames.add(new Label(""));
pnl_fileNames.add(new Label("Output File"));
pnl_fileNames.add(lbl_outFile = new Label(longString));
lbl_outFile.setBackground(Color.white);
pnl_fileNames.add(btn_set_outFile = new Button("Set"));
add(pnl_fileNames);
Panel pnl_buttons = new Panel(new GroupLayout(2,1));
pnl_buttons.add(btn_cancel = new Button("Cancel"));
pnl_buttons.add(btn_ok = new Button("OK"));
layout.setAnchor(GroupLayout.CENTER);
layout.setInsets(5,15,5,5);
add(pnl_buttons);
btn_set_inFile1.addActionListener(this);
btn_set_inFile1.setActionCommand("Set File 1");
btn_set_inFile2.addActionListener(this);
btn_set_inFile2.setActionCommand("Set File 2");
btn_set_outFile.addActionListener(this);
btn_set_outFile.setActionCommand("Set Out File");
btn_ok.addActionListener(this);
btn_cancel.addActionListener(this);
setSize(400, 220);
setVisible(true);
} /* MergeDialog() */
/**
* manage button presses.
* @param e the ActionEvent from the button.
*/
public void actionPerformed(ActionEvent e)
{
String arg = e.getActionCommand();
if (arg.equals("OK"))
{
if ((inFile1.length() == 0) ||
(inFile2.length() == 0) ||
(outFile.length() == 0))
{
new ErrorBox(demMain,
"Error!",
"Not all filenames are specified!");
return;
} /* if inFile1.length() == 0 ...*/
actionOK = true;
setVisible(false);
} /* if arg.equals("OK") */
if (arg.equals("Cancel"))
{
actionOK = false;
setVisible(false);
return;
} /* if arg.equals("Cancel") */
if (arg.equals("Set File 1"))
{
inFile1 = getFileName("Southern/Western DEM file", FileDialog.LOAD);
lbl_inFile1.setText(inFile1);
} /* if arg.equals("Set File 1") */
if (arg.equals("Set File 2"))
{
inFile2 = getFileName("Northern/Eastern DEM file", FileDialog.LOAD);
lbl_inFile2.setText(inFile2);
} /* if arg.equals("Set File 2") */
if (arg.equals("Set Out File"))
{
outFile = getFileName("Output File", FileDialog.SAVE);
lbl_outFile.setText(outFile);
} /* if arg.equals("Set Out File") */
} /* actionPerformed() */
String getFileName(String title, int action)
{
FileDialog fileDialog = new FileDialog(demMain,
title,
action);
fileDialog.show();
if (fileDialog.getFile() == null)
return ("");
else
return (fileDialog.getDirectory() + fileDialog.getFile());
} /* getFileName */
/**
* process this dialog's action. Done this way to not hog the
* AWT thread that responds to OK button press.
*/
void dialogAction()
{
if (actionOK)
{
DEM.merge(inFile1, inFile2, outFile, demMain);
} /* if actionOK */
} /* dialogAction() */
} /* class MergeDialog */