Java tutorial
/* * Copyright (c) 2010, SQL Power Group Inc. * * This file is part of SQL Power Library. * * SQL Power Library 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 3 of the License, or * (at your option) any later version. * * SQL Power Library 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, see <http://www.gnu.org/licenses/>. */ package ca.sqlpower.swingui; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.List; import javax.swing.Action; import javax.swing.Box; import javax.swing.ButtonGroup; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextPane; import javax.swing.JToggleButton; import javax.swing.KeyStroke; import javax.swing.text.BadLocationException; import org.apache.log4j.Logger; import ca.sqlpower.object.HorizontalAlignment; import ca.sqlpower.object.SPLabel; import ca.sqlpower.object.SPVariableHelper; import ca.sqlpower.object.VerticalAlignment; import ca.sqlpower.swingui.object.InsertVariableAction; import ca.sqlpower.swingui.object.VariableInserter; import ca.sqlpower.swingui.object.VariableLabel; import com.jgoodies.forms.builder.DefaultFormBuilder; import com.jgoodies.forms.layout.FormLayout; public abstract class LabelEditorPanel implements DataEntryPanel { private static final Logger logger = Logger.getLogger(LabelEditorPanel.class); private JPanel panel; private final SPLabel label; private FontSelector fontSelector; private JTextPane textArea; private JToggleButton leftAlign; private JToggleButton centreAlign; private JToggleButton rightAlign; private JToggleButton topAlign; private JToggleButton middleAlign; private JToggleButton bottomAlign; private JComboBox bgColor; private JComboBox fgColor; private JComboBox bdColor; private JCheckBox bgIsNull; private JCheckBox borderIsNull; public abstract FontSelector getFontSelector(); public abstract SPVariableHelper getVariablesHelper(); public abstract List<Color> getBackgroundColours(); /** * A constructor with the option to override the panel's initial selections * (taken from the label's values) with presets. This is useful for newly * created labels. */ public LabelEditorPanel(SPLabel label, boolean variables, boolean override) { this(label, variables); if (override) { bgIsNull.setSelected(false); borderIsNull.setSelected(false); bdColor.setSelectedIndex(0); bgColor.setSelectedIndex(0); fgColor.setSelectedIndex(0); } } public LabelEditorPanel(SPLabel label, boolean variables) { this.label = label; panel = new JPanel(); final DefaultFormBuilder fb = new DefaultFormBuilder( new FormLayout("pref, 4dlu, pref, 4dlu, pref, 4dlu, pref, 4dlu, 100dlu:grow"), panel); fb.getLayout().setColumnGroups(new int[][] { { 1, 5 }, { 3, 7 } }); textArea = new JTextPane(); textArea.setText(label.getText()); JButton variableButton = null; if (variables) { VariableLabel.insertLabels(getVariablesHelper(), textArea.getDocument(), textArea); Action insertVariableAction = new InsertVariableAction("Variables", getVariablesHelper(), null, new VariableInserter() { public void insert(String variable) { try { VariableLabel.insertLabel( variable.replaceFirst("\\$", "").replaceFirst("\\{", "").replaceFirst("\\}", ""), getVariablesHelper(), textArea.getDocument(), textArea.getCaretPosition(), textArea); } catch (BadLocationException e) { throw new IllegalStateException(e); } } }, textArea); variableButton = new JButton("Variables"); variableButton.setAction(insertVariableAction); // Maps CTRL+SPACE to insert variable textArea.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, InputEvent.CTRL_MASK), "insertVariable"); textArea.getActionMap().put("insertVariable", insertVariableAction); } ButtonGroup hAlignmentGroup = new ButtonGroup(); leftAlign = new JToggleButton(AlignmentIcons.LEFT_ALIGN_ICON, label.getHorizontalAlignment() == HorizontalAlignment.LEFT); hAlignmentGroup.add(leftAlign); centreAlign = new JToggleButton(AlignmentIcons.CENTRE_ALIGN_ICON, label.getHorizontalAlignment() == HorizontalAlignment.CENTER); hAlignmentGroup.add(centreAlign); rightAlign = new JToggleButton(AlignmentIcons.RIGHT_ALIGN_ICON, label.getHorizontalAlignment() == HorizontalAlignment.RIGHT); hAlignmentGroup.add(rightAlign); ButtonGroup vAlignmentGroup = new ButtonGroup(); topAlign = new JToggleButton(AlignmentIcons.TOP_ALIGN_ICON, label.getVerticalAlignment() == VerticalAlignment.TOP); vAlignmentGroup.add(topAlign); middleAlign = new JToggleButton(AlignmentIcons.MIDDLE_ALIGN_ICON, label.getVerticalAlignment() == VerticalAlignment.MIDDLE); vAlignmentGroup.add(middleAlign); bottomAlign = new JToggleButton(AlignmentIcons.BOTTOM_ALIGN_ICON, label.getVerticalAlignment() == VerticalAlignment.BOTTOM); vAlignmentGroup.add(bottomAlign); Box alignmentBox = Box.createHorizontalBox(); alignmentBox.add(leftAlign); alignmentBox.add(centreAlign); alignmentBox.add(rightAlign); alignmentBox.add(Box.createHorizontalStrut(5)); alignmentBox.add(topAlign); alignmentBox.add(middleAlign); alignmentBox.add(bottomAlign); if (variables) { alignmentBox.add(Box.createHorizontalGlue()); alignmentBox.add(variableButton); } fb.append("Alignment", alignmentBox, 7); fb.appendRelatedComponentsGapRow(); fb.appendRow("pref"); fb.nextLine(2); bgColor = new JComboBox(ColourScheme.BACKGROUND_COLOURS); fb.append("Label Colour", bgColor); ColorCellRenderer renderer = new ColorCellRenderer(40, 20); bgColor.setRenderer(renderer); bgColor.setSelectedItem(label.getBackgroundColour()); if (label.getBackgroundColour() == null) { bgColor.setSelectedIndex(0); } bgColor.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { bgIsNull.setSelected(false); } }); bgIsNull = new JCheckBox("Transparent", label.getBackgroundColour() == null); fb.append(bgIsNull); fb.appendRelatedComponentsGapRow(); fb.appendRow("pref"); fb.nextLine(2); fgColor = new JComboBox(ColourScheme.FOREGROUND_COLOURS); fb.append("Text Colour", fgColor); fgColor.setRenderer(renderer); fgColor.setSelectedItem(label.getForegroundColour()); fb.appendRelatedComponentsGapRow(); fb.appendRow("pref"); fb.nextLine(2); bdColor = new JComboBox(ColourScheme.FOREGROUND_COLOURS); fb.append("Border Colour", bdColor); bdColor.setRenderer(renderer); bdColor.setSelectedItem(label.getBorderColour()); if (label.getBorderColour() == null) { bdColor.setSelectedIndex(0); } bdColor.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { borderIsNull.setSelected(false); } }); borderIsNull = new JCheckBox("No Border", label.getBorderColour() == null); fb.append(borderIsNull); fb.appendRelatedComponentsGapRow(); fb.appendRow("fill:90dlu:grow"); fb.nextLine(2); textArea.setFont(label.getFont()); JLabel textLabel = fb.append("Text", new JScrollPane(textArea), 7); textLabel.setVerticalTextPosition(JLabel.TOP); fb.appendRow("pref"); fb.nextLine(); fontSelector = getFontSelector(); if (fontSelector != null) { logger.debug("FontSelector got passed Font " + label.getFont()); fontSelector.setShowingPreview(false); fontSelector.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { logger.debug("Changing font to: " + fontSelector.getSelectedFont()); textArea.setFont(fontSelector.getSelectedFont()); } }); fb.append("Font", fontSelector.getPanel(), 5); } } @Override public boolean applyChanges() { if (fontSelector != null) { fontSelector.applyChanges(); label.setFont(fontSelector.getSelectedFont()); } VariableLabel.removeLabels(textArea.getDocument()); label.setText(textArea.getText()); if (leftAlign.isSelected()) { label.setHorizontalAlignment(HorizontalAlignment.LEFT); } else if (centreAlign.isSelected()) { label.setHorizontalAlignment(HorizontalAlignment.CENTER); } else if (rightAlign.isSelected()) { label.setHorizontalAlignment(HorizontalAlignment.RIGHT); } if (topAlign.isSelected()) { label.setVerticalAlignment(VerticalAlignment.TOP); } else if (middleAlign.isSelected()) { label.setVerticalAlignment(VerticalAlignment.MIDDLE); } else if (bottomAlign.isSelected()) { label.setVerticalAlignment(VerticalAlignment.BOTTOM); } label.setBackgroundColour((Color) (bgIsNull.isSelected() ? null : bgColor.getSelectedItem())); label.setForegroundColour((Color) fgColor.getSelectedItem()); label.setBorderColour((Color) (borderIsNull.isSelected() ? null : bdColor.getSelectedItem())); return true; } @Override public void discardChanges() { // no-op } @Override public JComponent getPanel() { return panel; } @Override public boolean hasUnsavedChanges() { return true; } public SPLabel getLabel() { return label; } }