package org.rosuda.JGR; //JGR - Java Gui for R, see http://www.rosuda.org/JGR/ //Copyright (C) 2003 - 2005 Markus Helbig //--- for licensing information see LICENSE file in the original JGR distribution --- import java.awt.*; import java.awt.event.*; import java.beans.*; import java.io.*; import java.util.StringTokenizer; import javax.swing.*; import org.rosuda.ibase.*; import org.rosuda.JGR.toolkit.*; /** * JGRDataFileOpenDialog - implementation of a file-dialog which allows loading datasets into R by choosing several options. * * @author Markus Helbig * * RoSuDa 2003 - 2005 */ public class JGRDataFileOpenDialog extends JFileChooser implements ActionListener, ItemListener, PropertyChangeListener { private JTextField dataName = new JTextField(); private JTextField otherSeps = new JTextField(); private JCheckBox header = new JCheckBox("Header",true); private JCheckBox attach = new JCheckBox("Attach",false); private JComboBoxExt sepsBox = new JComboBoxExt(new String[] {"\\t","\\w",",",";","|","Others..."}); private String[] seps = new String[] {"\\t","",",",";","|"}; private JComboBoxExt quoteBox = new JComboBoxExt(new String[] {"None","\\\"","\\'","Others..."}); private String[] quotes = new String[] {"","\\\"","\\'"}; /** * Create a new DataFileOpenDialog * @param f parent frame * @param directory current directory */ public JGRDataFileOpenDialog(Frame f,String directory) { dataName.setMinimumSize(new Dimension(180,22)); dataName.setPreferredSize(new Dimension(180,22)); dataName.setMaximumSize(new Dimension(180,22)); quoteBox.setMinimumSize(new Dimension(90,22)); quoteBox.setPreferredSize(new Dimension(90,22)); quoteBox.setMaximumSize(new Dimension(90,22)); sepsBox.setMinimumSize(new Dimension(90,22)); sepsBox.setPreferredSize(new Dimension(90,22)); sepsBox.setMaximumSize(new Dimension(90,22)); quoteBox.addItemListener(this); sepsBox.addItemListener(this); this.addActionListener(this); this.addPropertyChangeListener(this); if (directory != null && new File(directory).exists()) this.setCurrentDirectory(new File(directory)); JPanel options = new JPanel(); BoxLayout box = new BoxLayout(options,BoxLayout.Y_AXIS); JPanel command = new JPanel(new FlowLayout(FlowLayout.LEFT)); command.add(new JLabel(" read.table(...) -> ")); command.add(dataName); JPanel command2 = new JPanel(new FlowLayout(FlowLayout.LEFT)); command2.add(header); command2.add(new JLabel(", sep=")); command2.add(sepsBox); command2.add(new JLabel(", quote=")); command2.add(quoteBox); JPanel att = new JPanel(new FlowLayout(FlowLayout.LEFT)); att.add(attach); options.add(command); options.add(command2); options.add(att); if (System.getProperty("os.name").startsWith("Window")) { JPanel fileview = (JPanel)((JComponent)((JComponent)this.getComponent(2)).getComponent(2)).getComponent(2); fileview.add(command); fileview.add(command2); fileview.add(att); JPanel pp = (JPanel) ((JComponent)((JComponent)this.getComponent(2)).getComponent(2)).getComponent(0); pp.add(new JPanel()); this.setPreferredSize(new Dimension(660,450)); } else { JPanel filename = (JPanel) this.getComponent(this.getComponentCount()-1); JPanel buttons = (JPanel) filename.getComponent(filename.getComponentCount()-1); this.setControlButtonsAreShown(false); filename.add(command); filename.add(command2); filename.add(att); filename.add(buttons); this.setPreferredSize(new Dimension(550,450)); } this.showOpenDialog(f); } /** * Open selected datafile, with specified options, R-command: read.table(...) */ public void loadFile() { if (this.getSelectedFile() != null) { JGR.directory = this.getCurrentDirectory().getAbsolutePath()+File.separator; String file = this.getSelectedFile().toString(); String useSep; if (sepsBox.getSelectedIndex() >= seps.length) useSep = sepsBox.getSelectedItem().toString(); else useSep = seps[sepsBox.getSelectedIndex()]; String useQuote; if (quoteBox.getSelectedIndex() >= quotes.length) useQuote = quoteBox.getSelectedItem().toString(); else useQuote = quotes[quoteBox.getSelectedIndex()]; String cmd = dataName.getText().trim().replaceAll("\\s","")+ " <- read.table(\""+file.replace('\\','/')+"\",header="+(header.isSelected()?"T":"F")+",sep=\""+useSep+"\", quote=\""+useQuote+"\")"+(attach.isSelected()?";attach("+dataName.getText().trim().replaceAll("\\s","")+")":"")+""; JGR.MAINRCONSOLE.execute(cmd,true); } } /** * actionPerformed: handle action event: menus. */ public void actionPerformed(ActionEvent e) { String cmd = e.getActionCommand(); if (cmd == "ApproveSelection") loadFile(); //else if (cmd == "CancelSelection") dispose(); } /** * itemStateChanged: handle itemStateChanged event, et separator and quote box enabled if "Others..." is choosen. */ public void itemStateChanged(ItemEvent e) { Object source = e.getItemSelectable(); boolean edit = false; if (source == quoteBox) { edit = quoteBox.getSelectedIndex() == quoteBox.getItemCount()-1?true:false; quoteBox.setEditable(edit); } else if (source == sepsBox) { edit = sepsBox.getSelectedIndex() == sepsBox.getItemCount()-1?true:false; sepsBox.setEditable(edit); } } private void checkFile(File file) { try { BufferedReader reader = new BufferedReader(new FileReader(file)); String line1 = null; String line2 = null; if (reader.ready()) line1 = reader.readLine(); if (reader.ready()) line2 = reader.readLine(); reader.close(); if (line2 != null) { int i = line2.indexOf("\""); if (i > -1 && line2.indexOf("\"",i+1) > -1) quoteBox.setSelectedItem("\\\""); else { i = line2.indexOf("\'"); if (i > -1 && line2.indexOf("\'",i+1) > -1) quoteBox.setSelectedItem("\\\'"); else quoteBox.setSelectedItem("None"); } sepsBox.setSelectedItem("\\w"); //fallback i = line2.indexOf("\t"); if (i > -1 && line2.indexOf("\t",i+1) > -1) sepsBox.setSelectedItem("\\t"); i = line2.indexOf(";"); if (i > -1 && line2.indexOf(";",i+1) > -1) sepsBox.setSelectedItem(";"); i = line2.indexOf(","); if (i > -1 && line2.indexOf(",",i+1) > -1) sepsBox.setSelectedItem(","); i = line2.indexOf("|"); if (i > -1 && line2.indexOf("|",i+1) > -1) sepsBox.setSelectedItem("|"); } if (line1 != null && line2 != null) { String sep = seps[sepsBox.getSelectedIndex()]; sep = sep=="\\t"?"\t":sep; int z1 = 0, z2 = 0; if (sep.length() == 0) { z1 = new StringTokenizer(line1).countTokens(); z2 = new StringTokenizer(line2).countTokens(); } else { int i = -1; while ((i = line1.trim().indexOf(sep,i+1)) > -1) z1++; i = -1; while ((i = line2.trim().indexOf(sep,i+1)) > -1) z2++; } if (z1+1==z2 || (z1==z2 && line1.matches("^[a-zA-Z\"].*"))) header.setSelected(true); else header.setSelected(false); } } catch (Exception e) { e.printStackTrace();} } /** * propertyChange: handle propertyChange, used for setting the name where the file should be assigned to. */ public void propertyChange(PropertyChangeEvent e) { File file = this.getSelectedFile(); if(file!=null && !file.isDirectory()) { String name = file.getName().replaceAll("\\..*", ""); name = name.replaceAll("^[0-9]+|[^a-zA-Z|^0-9|^_]","."); dataName.setText(name); checkFile(file); } else { dataName.setText(null); } } }