X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=tim%2Fprune%2Fload%2FFileLoader.java;h=c1bf3dfc1a8e05d202bf00923f2cb94fc37d1017;hp=c7126f584ecfcb04589671ba0238a33457d48167;hb=5625a1abadb5f2ca5f017fe7dbda1d5141cb637b;hpb=23959e65a6a0d581e657b07186d18b7a1ac5afeb

diff --git a/tim/prune/load/FileLoader.java b/tim/prune/load/FileLoader.java
index c7126f5..c1bf3df 100644
--- a/tim/prune/load/FileLoader.java
+++ b/tim/prune/load/FileLoader.java
@@ -1,91 +1,26 @@
 package tim.prune.load;
 
-import java.awt.BorderLayout;
-import java.awt.CardLayout;
-import java.awt.Component;
-import java.awt.Dimension;
-import java.awt.FlowLayout;
-import java.awt.GridLayout;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import javax.swing.*;
-import javax.swing.event.DocumentEvent;
-import javax.swing.event.DocumentListener;
-import javax.swing.event.ListSelectionEvent;
-import javax.swing.event.ListSelectionListener;
-import javax.swing.table.TableCellEditor;
-
 import java.io.File;
 
+import javax.swing.JFileChooser;
+import javax.swing.JFrame;
+import javax.swing.JOptionPane;
+
 import tim.prune.App;
 import tim.prune.I18nManager;
-import tim.prune.data.Altitude;
-import tim.prune.data.Field;
+import tim.prune.load.xml.XmlFileLoader;
 
 
 /**
- * Special class to handle file loading including GUI options,
- * and conversion to a Track object
+ * Generic FileLoader class to select a file
+ * and pass handling on to appropriate loader
  */
 public class FileLoader
 {
-	private File _file = null;
-	private App _app = null;
-	private JFrame _parentFrame = null;
-	private JDialog _dialog = null;
-	private JPanel _cardPanel = null;
-	private CardLayout _layout = null;
-	private JButton _backButton = null, _nextButton = null;
-	private JButton _finishButton = null;
-	private JButton _moveUpButton = null, _moveDownButton = null;
-	private JRadioButton[] _delimiterRadios = null;
-	private JTextField _otherDelimiterText = null;
-	private JLabel _statusLabel = null;
-	private DelimiterInfo[] _delimiterInfos = null;
 	private JFileChooser _fileChooser = null;
-	private FileCacher _fileCacher = null;
-	private JList _snippetBox = null;
-	private FileExtractTableModel _fileExtractTableModel = null;
-	private JTable _fieldTable;
-	private FieldSelectionTableModel _fieldTableModel = null;
-	private JComboBox _unitsDropDown = null;
-	private int _selectedField = -1;
-	private char _currentDelimiter = ',';
-
-	// previously selected values
-	private char _lastUsedDelimiter = ',';
-	private int _lastNumFields = -1;
-	private Field[] _lastSelectedFields = null;
-	private int _lastAltitudeFormat = Altitude.FORMAT_NONE;
-
-	// constants
-	private static final int SNIPPET_SIZE = 6;
-	private static final int MAX_SNIPPET_WIDTH = 80;
-	private static final char[] DELIMITERS = {',', '\t', ';', ' '};
-
-
-	/**
-	 * Inner class to listen for delimiter change operations
-	 */
-	private class DelimListener implements ActionListener, DocumentListener
-	{
-		public void actionPerformed(ActionEvent e)
-		{
-			informDelimiterSelected();
-		}
-		public void changedUpdate(DocumentEvent e)
-		{
-			informDelimiterSelected();
-		}
-		public void insertUpdate(DocumentEvent e)
-		{
-			informDelimiterSelected();
-		}
-		public void removeUpdate(DocumentEvent e)
-		{
-			informDelimiterSelected();
-		}
-	}
+	private JFrame _parentFrame;
+	private TextFileLoader _textFileLoader = null;
+	private XmlFileLoader _xmlFileLoader = null;
 
 
 	/**
@@ -95,8 +30,9 @@ public class FileLoader
 	 */
 	public FileLoader(App inApp, JFrame inParentFrame)
 	{
-		_app = inApp;
 		_parentFrame = inParentFrame;
+		_textFileLoader = new TextFileLoader(inApp, inParentFrame);
+		_xmlFileLoader = new XmlFileLoader(inApp, inParentFrame);
 	}
 
 
@@ -110,454 +46,40 @@ public class FileLoader
 			_fileChooser = new JFileChooser();
 		if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
 		{
-			_file = _fileChooser.getSelectedFile();
-			if (preCheckFile(_file))
+			File file = _fileChooser.getSelectedFile();
+			// Check file exists and is readable
+			if (file != null && file.exists() && file.canRead())
 			{
-				_dialog = new JDialog(_parentFrame, I18nManager.getText("dialog.openoptions.title"), true);
-				_dialog.setLocationRelativeTo(_parentFrame);
-				_dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
-				_dialog.getContentPane().add(makeDialogComponents());
-
-				// select best separator according to row counts (more is better)
-				int bestDelim = getBestOption(_delimiterInfos[0].getNumWinningRecords(),
-					_delimiterInfos[1].getNumWinningRecords(), _delimiterInfos[2].getNumWinningRecords(),
-					_delimiterInfos[3].getNumWinningRecords());
-				if (bestDelim >= 0)
-					_delimiterRadios[bestDelim].setSelected(true);
+				// Check file type to see if it's xml or just normal text
+				String fileExtension = file.getName().toLowerCase();
+				if (fileExtension.length() > 4)
+					{fileExtension = fileExtension.substring(fileExtension.length() - 4);}
+				if (fileExtension.equals(".kml") || fileExtension.equals(".gpx")
+					|| fileExtension.equals(".xml"))
+				{
+					// Use xml loader for kml, gpx and xml filenames
+					_xmlFileLoader.openFile(file);
+				}
 				else
-					_delimiterRadios[_delimiterRadios.length-1].setSelected(true);
-				informDelimiterSelected();
-				_dialog.pack();
-				_dialog.show();
+				{
+					// Use text loader for everything else
+					_textFileLoader.openFile(file);
+				}
 			}
 			else
 			{
+				// couldn't read file - show error message
 				JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.load.noread"),
 					I18nManager.getText("error.load.dialogtitle"), JOptionPane.ERROR_MESSAGE);
 			}
 		}
 	}
 
-
-	/**
-	 * Check the given file for readability and funny characters,
-	 * and count the fields for the various separators
-	 * @param inFile file to check
-	 */
-	private boolean preCheckFile(File inFile)
-	{
-		// Check file exists and is readable
-		if (inFile == null || !inFile.exists() || !inFile.canRead())
-		{
-			return false;
-		}
-		// Use a FileCacher to read the file into an array
-		_fileCacher = new FileCacher(inFile);
-
-		// Check each line of the file
-		String[] fileContents = _fileCacher.getContents();
-		boolean fileOK = true;
-		_delimiterInfos = new DelimiterInfo[5];
-		for (int i=0; i<4; i++) _delimiterInfos[i] = new DelimiterInfo(DELIMITERS[i]);
-
-		String currLine = null;
-		String[] splitFields = null;
-		int commaFields = 0, semicolonFields = 0, tabFields = 0, spaceFields = 0;
-		for (int lineNum=0; lineNum<fileContents.length && fileOK; lineNum++)
-		{
-			currLine = fileContents[lineNum];
-			// check for invalid characters
-			if (currLine.indexOf('\0') >= 0) {fileOK = false;}
-			// check for commas
-			splitFields = currLine.split(",");
-			commaFields = splitFields.length;
-			if (commaFields > 1) _delimiterInfos[0].incrementNumRecords();
-			_delimiterInfos[0].updateMaxFields(commaFields);
-			// check for tabs
-			splitFields = currLine.split("\t");
-			tabFields = splitFields.length;
-			if (tabFields > 1) _delimiterInfos[1].incrementNumRecords();
-			_delimiterInfos[1].updateMaxFields(tabFields);
-			// check for semicolons
-			splitFields = currLine.split(";");
-			semicolonFields = splitFields.length;
-			if (semicolonFields > 1) _delimiterInfos[2].incrementNumRecords();
-			_delimiterInfos[2].updateMaxFields(semicolonFields);
-			// check for spaces
-			splitFields = currLine.split(" ");
-			spaceFields = splitFields.length;
-			if (spaceFields > 1) _delimiterInfos[3].incrementNumRecords();
-			_delimiterInfos[3].updateMaxFields(spaceFields);
-			// increment counters
-			int bestScorer = getBestOption(commaFields, tabFields, semicolonFields, spaceFields);
-			if (bestScorer >= 0)
-				_delimiterInfos[bestScorer].incrementNumWinningRecords();
-		}
-		return fileOK;
-	}
-
-
-	/**
-	 * Get the index of the best one in the list
-	 * @return the index of the maximum of the four given values
-	 */
-	private static int getBestOption(int inOpt0, int inOpt1, int inOpt2, int inOpt3)
-	{
-		int bestIndex = -1;
-		int maxScore = 1;
-		if (inOpt0 > maxScore) {bestIndex = 0; maxScore = inOpt0;}
-		if (inOpt1 > maxScore) {bestIndex = 1; maxScore = inOpt1;}
-		if (inOpt2 > maxScore) {bestIndex = 2; maxScore = inOpt2;}
-		if (inOpt3 > maxScore) {bestIndex = 3; maxScore = inOpt3;}
-		return bestIndex;
-	}
-
-
-	/**
-	 * Make the components for the open options dialog
-	 * @return Component for all options
-	 */
-	private Component makeDialogComponents()
-	{
-		JPanel wholePanel = new JPanel();
-		wholePanel.setLayout(new BorderLayout());
-
-		// add buttons to south
-		JPanel buttonPanel = new JPanel();
-		buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
-		_backButton = new JButton(I18nManager.getText("button.back"));
-		_backButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				_layout.previous(_cardPanel);
-				_backButton.setEnabled(false);
-				_nextButton.setEnabled(true);
-				_finishButton.setEnabled(false);
-			}
-		});
-		_backButton.setEnabled(false);
-		buttonPanel.add(_backButton);
-		_nextButton = new JButton(I18nManager.getText("button.next"));
-		_nextButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				prepareSecondPanel();
-				_layout.next(_cardPanel);
-				_nextButton.setEnabled(false);
-				_backButton.setEnabled(true);
-				_finishButton.setEnabled(true);
-			}
-		});
-		buttonPanel.add(_nextButton);
-		_finishButton = new JButton(I18nManager.getText("button.finish"));
-		_finishButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				finished();
-			}
-		});
-		_finishButton.setEnabled(false);
-		buttonPanel.add(_finishButton);
-		JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
-		cancelButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				_dialog.dispose();
-			}
-		});
-		buttonPanel.add(cancelButton);
-		wholePanel.add(buttonPanel, BorderLayout.SOUTH);
-
-		// Make the two cards, for delimiter and fields
-		_cardPanel = new JPanel();
-		_layout = new CardLayout();
-		_cardPanel.setLayout(_layout);
-		JPanel firstCard = new JPanel();
-		firstCard.setLayout(new BorderLayout());
-
-		JPanel delimsPanel = new JPanel();
-		delimsPanel.setLayout(new GridLayout(0, 2));
-		delimsPanel.add(new JLabel(I18nManager.getText("dialog.delimiter.label")));
-		delimsPanel.add(new JLabel("")); // blank label to go to next grid row
-		// radio buttons
-		_delimiterRadios = new JRadioButton[5];
-		_delimiterRadios[0] = new JRadioButton(I18nManager.getText("dialog.delimiter.comma"));
-		delimsPanel.add(_delimiterRadios[0]);
-		_delimiterRadios[1] = new JRadioButton(I18nManager.getText("dialog.delimiter.tab"));
-		delimsPanel.add(_delimiterRadios[1]);
-		_delimiterRadios[2] = new JRadioButton(I18nManager.getText("dialog.delimiter.semicolon"));
-		delimsPanel.add(_delimiterRadios[2]);
-		_delimiterRadios[3] = new JRadioButton(I18nManager.getText("dialog.delimiter.space"));
-		delimsPanel.add(_delimiterRadios[3]);
-		JPanel otherPanel = new JPanel();
-		otherPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
-		_delimiterRadios[4] = new JRadioButton(I18nManager.getText("dialog.delimiter.other"));
-		otherPanel.add(_delimiterRadios[4]);
-		_otherDelimiterText = new JTextField(new OneCharDocument(), null, 2);
-		otherPanel.add(_otherDelimiterText);
-		// Group radio buttons
-		ButtonGroup delimGroup = new ButtonGroup();
-		DelimListener delimListener = new DelimListener();
-		for (int i=0; i<_delimiterRadios.length; i++)
-		{
-			delimGroup.add(_delimiterRadios[i]);
-			_delimiterRadios[i].addActionListener(delimListener);
-		}
-		_otherDelimiterText.getDocument().addDocumentListener(delimListener);
-		delimsPanel.add(new JLabel(""));
-		delimsPanel.add(otherPanel);
-		_statusLabel = new JLabel("");
-		delimsPanel.add(_statusLabel);
-		firstCard.add(delimsPanel, BorderLayout.SOUTH);
-		// load snippet to show first few lines
-		_snippetBox = new JList(_fileCacher.getSnippet(SNIPPET_SIZE, MAX_SNIPPET_WIDTH));
-		_snippetBox.setEnabled(false);
-		firstCard.add(makeLabelledPanel("dialog.openoptions.filesnippet", _snippetBox), BorderLayout.CENTER);
-
-		// Second screen, for field order selection
-		JPanel secondCard = new JPanel();
-		secondCard.setLayout(new BorderLayout());
-		// table for file contents
-		_fileExtractTableModel = new FileExtractTableModel();
-		JTable extractTable = new JTable(_fileExtractTableModel);
-		JScrollPane tableScrollPane = new JScrollPane(extractTable);
-		extractTable.setPreferredScrollableViewportSize(new Dimension(350, 80));
-		extractTable.getTableHeader().setReorderingAllowed(false);
-		secondCard.add(makeLabelledPanel("dialog.openoptions.tabledesc", tableScrollPane), BorderLayout.NORTH);
-		JPanel innerPanel2 = new JPanel();
-		innerPanel2.setLayout(new BorderLayout());
-		_fieldTable = new JTable(new FieldSelectionTableModel());
-		_fieldTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
-		// add listener for selected table row
-		_fieldTable.getSelectionModel().addListSelectionListener(
-			new ListSelectionListener() {
-				public void valueChanged(ListSelectionEvent e) {
-					ListSelectionModel lsm = (ListSelectionModel) e.getSource();
-					if (lsm.isSelectionEmpty()) {
-						//no rows are selected
-						selectField(-1);
-					} else {
-						selectField(lsm.getMinSelectionIndex());
-					}
-				}
-			});
-		JPanel tablePanel = new JPanel();
-		tablePanel.setLayout(new BorderLayout());
-		tablePanel.add(_fieldTable.getTableHeader(), BorderLayout.NORTH);
-		tablePanel.add(_fieldTable, BorderLayout.CENTER);
-		innerPanel2.add(tablePanel, BorderLayout.CENTER);
-
-		JPanel innerPanel3 = new JPanel();
-		innerPanel3.setLayout(new BoxLayout(innerPanel3, BoxLayout.Y_AXIS));
-		_moveUpButton = new JButton(I18nManager.getText("button.moveup"));
-		_moveUpButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				int currRow = _fieldTable.getSelectedRow();
-				closeTableComboBox(currRow);
-				_fieldTableModel.moveUp(currRow);
-				_fieldTable.setRowSelectionInterval(currRow-1, currRow-1);
-			}
-		});
-		innerPanel3.add(_moveUpButton);
-		_moveDownButton = new JButton(I18nManager.getText("button.movedown"));
-		_moveDownButton.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e)
-			{
-				int currRow = _fieldTable.getSelectedRow();
-				closeTableComboBox(currRow);
-				_fieldTableModel.moveDown(currRow);
-				_fieldTable.setRowSelectionInterval(currRow+1, currRow+1);
-			}
-		});
-		innerPanel3.add(_moveDownButton);
-		innerPanel3.add(Box.createVerticalStrut(70));
-
-		innerPanel2.add(innerPanel3, BorderLayout.EAST);
-		secondCard.add(innerPanel2, BorderLayout.CENTER);
-		JPanel altUnitsPanel = new JPanel();
-		altUnitsPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
-		altUnitsPanel.add(new JLabel(I18nManager.getText("dialog.openoptions.altitudeunits")));
-		String[] units = {I18nManager.getText("units.metres"), I18nManager.getText("units.feet")};
-		_unitsDropDown = new JComboBox(units);
-		altUnitsPanel.add(_unitsDropDown);
-		secondCard.add(altUnitsPanel, BorderLayout.SOUTH);
-		_cardPanel.add(firstCard, "card1");
-		_cardPanel.add(secondCard, "card2");
-
-		wholePanel.add(_cardPanel, BorderLayout.CENTER);
-		return wholePanel;
-	}
-
-
-	/**
-	 * Close the combo box on the selected row of the field table
-	 * @param inRow currently selected row number
-	 */
-	private void closeTableComboBox(int inRow)
-	{
-		TableCellEditor editor = _fieldTable.getCellEditor(inRow, 1);
-		if (editor != null)
-		{
-			editor.stopCellEditing();
-		}
-	}
-
-
-	/**
-	 * change the status based on selection of a delimiter
-	 */
-	protected void informDelimiterSelected()
-	{
-		for (int i=0; i<(_delimiterRadios.length-1); i++)
-		{
-			if (_delimiterRadios[i].isSelected())
-			{
-				int numRecords = _delimiterInfos[i].getNumRecords();
-				if (numRecords == 0)
-				{
-					_statusLabel.setText(I18nManager.getText("dialog.openoptions.deliminfo.norecords"));
-				}
-				else
-				{
-					_statusLabel.setText("" + numRecords + " " + I18nManager.getText("dialog.openoptions.deliminfo.records")
-						+ _delimiterInfos[i].getMaxFields() + " " + I18nManager.getText("dialog.openoptions.deliminfo.fields"));
-				}
-			}
-		}
-		if (_delimiterRadios[_delimiterRadios.length-1].isSelected())
-		{
-			_statusLabel.setText("");
-		}
-		// enable/disable next button
-		_nextButton.setEnabled(_delimiterRadios[4].isSelected() == false
-			|| _otherDelimiterText.getText().length() == 1);
-	}
-
-
-	/**
-	 * Get the delimiter info from the first step
-	 * @return delimiter information object for the selected delimiter
-	 */
-	public DelimiterInfo getSelectedDelimiterInfo()
-	{
-		for (int i=0; i<4; i++)
-			if (_delimiterRadios[i].isSelected()) return _delimiterInfos[i];
-		// must be "other" - build info if necessary
-		if (_delimiterInfos[4] == null)
-			_delimiterInfos[4] = new DelimiterInfo(_otherDelimiterText.getText().charAt(0));
-		return _delimiterInfos[4];
-	}
-
-
-	/**
-	 * Use the delimiter selected to determine the fields in the file
-	 * and prepare the second panel accordingly
-	 */
-	private void prepareSecondPanel()
-	{
-		DelimiterInfo info = getSelectedDelimiterInfo();
-		FileSplitter splitter = new FileSplitter(_fileCacher);
-		// Check info makes sense - num fields > 0, num records > 0
-		// set "Finished" button to disabled if not ok
-		// TODO: Work out if there are header rows or not, save?
-		// Try to match header rows with fields
-		// Try to match data with fields
-		// Add data to GUI elements
-		Object[][] tableData = splitter.splitFieldData(info.getDelimiter());
-		// possible to ignore blank columns here
-		_currentDelimiter = info.getDelimiter();
-		_fileExtractTableModel.updateData(tableData);
-		_fieldTableModel = new FieldSelectionTableModel();
-
-		// Check number of fields and use last ones if count matches
-		Field[] startFieldArray = null;
-		if (_lastSelectedFields != null && splitter.getNumColumns() == _lastSelectedFields.length)
-			startFieldArray = _lastSelectedFields;
-		else
-			startFieldArray = splitter.makeDefaultFields();
-		_fieldTableModel.updateData(startFieldArray);
-		_fieldTable.setModel(_fieldTableModel);
-		// add dropdowns to second column
-		JComboBox fieldTypesBox = new JComboBox();
-		for (int i=0; i<Field.ALL_AVAILABLE_FIELDS.length; i++)
-		{
-			fieldTypesBox.addItem(Field.ALL_AVAILABLE_FIELDS[i].getName());
-		}
-		_fieldTable.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(fieldTypesBox));
-
-		// Set altitude format to same as last time if available
-		if (_lastAltitudeFormat == Altitude.FORMAT_METRES)
-			_unitsDropDown.setSelectedIndex(0);
-		else if (_lastAltitudeFormat == Altitude.FORMAT_FEET)
-			_unitsDropDown.setSelectedIndex(1);
-		// no selection on field list
-		selectField(-1);
-	}
-
-
-	/**
-	 * All options have been selected, so load file
-	 */
-	private void finished()
-	{
-		// Save delimiter, field array and altitude format for later use
-		_lastUsedDelimiter = _currentDelimiter;
-		_lastSelectedFields = _fieldTableModel.getFieldArray();
-		int altitudeFormat = Altitude.FORMAT_METRES;
-		if (_unitsDropDown.getSelectedIndex() == 1)
-		{
-			altitudeFormat = Altitude.FORMAT_FEET;
-		}
-		_lastAltitudeFormat = altitudeFormat;
-		// give data to App
-		_app.informDataLoaded(_fieldTableModel.getFieldArray(),
-			_fileExtractTableModel.getData(), altitudeFormat,
-			_file.getName());
-		// clear up file cacher
-		_fileCacher.clear();
-		// dispose of dialog
-		_dialog.dispose();
-	}
-
-
-	/**
-	 * Make a panel with a label and a component
-	 * @param inLabelKey label key to use
-	 * @param inComponent component for main area of panel
-	 * @return labelled Panel
-	 */
-	private static JPanel makeLabelledPanel(String inLabelKey, JComponent inComponent)
-	{
-		JPanel panel = new JPanel();
-		panel.setLayout(new BorderLayout());
-		panel.add(new JLabel(I18nManager.getText(inLabelKey)), BorderLayout.NORTH);
-		panel.add(inComponent, BorderLayout.CENTER);
-		return panel;
-	}
-
-
-	/**
-	 * An entry in the field list has been selected
-	 * @param inFieldNum index of field, starting with 0
-	 */
-	private void selectField(int inFieldNum)
-	{
-		if (inFieldNum == -1 || inFieldNum != _selectedField)
-		{
-			_selectedField = inFieldNum;
-			_moveUpButton.setEnabled(inFieldNum > 0);
-			_moveDownButton.setEnabled(inFieldNum >= 0
-				&& inFieldNum < (_fieldTableModel.getRowCount()-1));
-		}
-	}
-
-
 	/**
-	 * @return the last delimiter character used for a load
+	 * @return the last delimiter character used for a text file load
 	 */
 	public char getLastUsedDelimiter()
 	{
-		return _lastUsedDelimiter;
+		return _textFileLoader.getLastUsedDelimiter();
 	}
 }