| gvSIG desktop 1

package org.gvsig.app.gui.command;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JScrollBar;

import javax.swing.JScrollPane;

import javax.swing.JSlider;

import javax.swing.JTable;

import javax.swing.ListSelectionModel;

import javax.swing.table.DefaultTableCellRenderer;

import javax.swing.table.TableColumn;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.ui.mdiManager.IWindowListener;

import org.gvsig.andami.ui.mdiManager.SingletonWindow;

import org.gvsig.andami.ui.mdiManager.WindowInfo;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.fmap.dal.feature.FeatureStoreNotification;

import org.gvsig.gui.beans.DefaultBean;

import org.gvsig.tools.observer.Observable;

import org.gvsig.tools.observer.Observer;

import org.gvsig.tools.undo.UndoRedoInfo;

import org.gvsig.tools.undo.UndoRedoStack;

@SuppressWarnings("serial")

public class CommandStackDialog extends DefaultBean implements SingletonWindow, IWindowListener, Observer{

        private JTable commandTable = null;

        private JPanel topPanel = null;

        private UndoRedoStack undoRedoStack;

        private JSlider commandSlider = null;

        private int lowLimit;

        private int currentValue = -1;

        private int currentSliderValue = -1;

        private JPanel sliderPanel = null;

        protected boolean refreshing;

        private JPanel centerPanel = null;

        private JScrollPane jScrollPane = null;

        private JPanel tablePanel = null;

        private static final ImageIcon imodify = IconThemeHelper.getImageIcon("layout-tool-undo-redo-actions-modify"); 

        private static final ImageIcon iadd = IconThemeHelper.getImageIcon("layout-tool-undo-redo-actions-add");

        private static final ImageIcon idel = IconThemeHelper.getImageIcon("layout-tool-undo-redo-actions-delete");

        private CommandTableModel commandTableModel = null;

        /**

         * This is the default constructor

         */

        public CommandStackDialog() {

                super();

                initialize();

        }

        public void setModel(UndoRedoStack cr1) {

        if (this.undoRedoStack != null) {

            if (this.undoRedoStack.equals(cr1)) {

                return;

            } else {

                this.undoRedoStack.deleteObserver(this);

            }

                }

                this.undoRedoStack = cr1;

                this.undoRedoStack.addObserver(this);

                initTable();

                initSlider();

                currentValue = commandTableModel.getPos();

            refreshControls();

                refreshSliderSize();

        }

        /**

         * This method initializes this

         *

         * @return void

         */

        private void initialize() {

                this.setLayout(new BorderLayout());

                this.setSize(328, 229);                

                this.add(getJScrollPane(), java.awt.BorderLayout.CENTER);

        }

        /**

         * This method initializes jList

         *

         * @return javax.swing.JList

         */

        private JTable getTable() {

                if (commandTable == null) {

                        commandTable = new JTable();

                }

                return commandTable;

        }

        private void initTable(){

                commandTableModel = new CommandTableModel(undoRedoStack);

                commandTable.setModel(commandTableModel);

                commandTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                commandTable.setSelectionBackground(Color.orange);

                commandTable.setSelectionForeground(Color.black);

                commandTable.setShowGrid(false);

                commandTable.getTableHeader().setBackground(Color.white);

                TableColumn tc = commandTable.getColumnModel().getColumn(0);

                tc.setCellRenderer(new DefaultTableCellRenderer() {

                           public Component getTableCellRendererComponent(JTable table,

                                                                       Object value,

                                                                       boolean isSelected,

                                                                       boolean hasFocus,

                                                                       int row,

                                                                       int column)

                              {

                                 JLabel label = (JLabel)

                                    super.getTableCellRendererComponent

                                       (table, value, isSelected, hasFocus, row, column);

                                    UndoRedoInfo info = (UndoRedoInfo) value;

                                    switch (info.getType()) {

                            case UndoRedoInfo.INSERT:

                                label.setIcon(iadd);

                                break;

                            case UndoRedoInfo.DELETE:

                                label.setIcon(idel);

                                break;

                            default:

                                label.setIcon(imodify);

                        }

                                 if (commandTableModel.getPos()<row){

                                         label.setBackground(Color.lightGray);

                                 }else {

                                                label.setBackground(Color.orange);

                                 }

                                    return label;

                              }

                        });

                commandTable.addMouseListener(new java.awt.event.MouseAdapter() {

                        public void mousePressed(java.awt.event.MouseEvent e) {

                                int newpos = commandTable.getSelectedRow();        

                                if (newpos >= 0){

                                    commandTableModel.setPos(newpos);                                

                                    PluginServices.getMainFrame().enableControls();

                                }

                        }

                });

        }

        /**

         * This method initializes jPanel

         *

         * @return javax.swing.JPanel

         */

        private JPanel getTopPanel() {

                if (topPanel == null) {

                        topPanel = new JPanel();        

                }

                return topPanel;

        }

        public WindowInfo getWindowInfo() {

                WindowInfo m_viewinfo = new WindowInfo(WindowInfo.ICONIFIABLE |

                                WindowInfo.MODELESSDIALOG | WindowInfo.RESIZABLE | WindowInfo.PALETTE);

                m_viewinfo.setTitle(PluginServices.getText(this,

                                "pila_de_comandos"));

                return m_viewinfo;

        }

        public Object getWindowModel() {

                return commandTableModel.getClass().getName();

        }

        public void windowActivated() {

                this.validateTree();

        }

        public void windowClosed() {

        }

        public void commandRepaint() {

                setValue(commandTableModel.getPos(), true);

                refreshSliderSize();

        }

    /**

     * Refreshes all the mutable controls in this component.

     */

    private void refreshControls() {

        int normalizedValue = (int) (((commandTableModel.getRowCount() - (currentValue + 1)) / (float)commandTableModel.getRowCount()) * 100);

        //Adding the 50% od the interval

        if (commandTableModel.getRowCount() > 0){

            normalizedValue = normalizedValue + (100 / (commandTableModel.getRowCount() * 2));

        }

        refreshSlider(normalizedValue);

        commandTable.repaint();

    }

    /**

     * Sets the slider to the correct (scaled) position.

     * @param normalizedValue

     */

    private void refreshSlider(int normalizedValue) {

        if (!refreshing){

            refreshing = true;

            getJSlider().setValue(normalizedValue);

            refreshing = false; 

        }

    }    

    private void refreshSliderSize(){

        if (!refreshing){

            Dimension size = new Dimension(commandSlider.getPreferredSize().width,

                ((commandTableModel.getRowCount() + 1) * getTable().getRowHeight()));

            JScrollBar verticalScrollBar = getJScrollPane().getVerticalScrollBar();

            verticalScrollBar.setValue(commandTableModel.getPos()*getTable().getRowHeight());

            commandSlider.setPreferredSize(size);

            commandSlider.setSize(size);

            validateTree();

        }

    }

        /**

         * This method initializes jSlider

         *

         * @return javax.swing.JSlider

         */

        private JSlider getJSlider() {

                if (commandSlider == null) {

                        commandSlider = new JSlider(JSlider.VERTICAL, 0, 100, 0);        

                }

                return commandSlider;

        }

        private void initSlider(){                

                commandSlider.setPreferredSize(

                    new Dimension(commandSlider.getPreferredSize().width,

                        ((getTable().getRowCount())*getTable().getRowHeight())));

                commandSlider.addChangeListener(new javax.swing.event.ChangeListener() {

                                public synchronized void stateChanged(javax.swing.event.ChangeEvent e) {

                                    if (!refreshing){

                                        int value = getTablePosFromSlider();  

                                        //currentSliderValue controls the same event thrown by the

                                        //slider. currentValue controls the event thrown by the table

                                        if (currentSliderValue != value){

                                            refreshing = true;        

                                            currentSliderValue = value;

                                            commandTableModel.setPos(value);

                                            refreshing = false;    

                                        }

                                    }

                            }

                    });

            setValue(commandTableModel.getRowCount() - 1 - commandTableModel.getPos(),true);

        }

        private int getTablePosFromSlider(){          

            if (commandTableModel.getRowCount() == 0){

                return -1;

            }

            int value = getJSlider().getValue();

            value = (int) ((value * 0.01) * commandTableModel.getRowCount());

            //The bottom part of the slider starts in 100: take the reverse value

            value = (commandTableModel.getRowCount() - 1) - value;

            if (value == -1){

                return 0;

            }

            return value;

        }

    public void setValue(int number, boolean fireEvent) {

        int rowCount = commandTableModel.getRowCount();

        if (number < lowLimit) {

                        number = lowLimit;

                }

        if (number > (rowCount - 1)) {

                        number = rowCount;

                }

        if (number != currentValue) {

                currentValue = number;

                refreshControls();

                if (fireEvent) {

                                callValueChanged(new Integer(currentValue));

                        }

        }     

    }

        /**

         * This method initializes jPanel1

         *

         * @return javax.swing.JPanel

         */

        private JPanel getSliderPanel() {

                if (sliderPanel == null) {

                        sliderPanel = new JPanel();

                        sliderPanel.add(getJSlider());

                }

                return sliderPanel;

        }

        /**

         * This method initializes pCenter

         *

         * @return javax.swing.JPanel

         */

        private JPanel getCenterPanel() {

                if (centerPanel == null) {

                        centerPanel = new JPanel();

                        centerPanel.setLayout(new BorderLayout());                        

                        centerPanel.add(getTablePanel(), java.awt.BorderLayout.CENTER);

                        centerPanel.add(getSliderPanel(), java.awt.BorderLayout.WEST);

                }

                return centerPanel;

        }

        private JPanel getTablePanel() {

            if (tablePanel == null) {

                tablePanel = new JPanel();

                tablePanel.setLayout(new BorderLayout());

                tablePanel.add(getTable(), java.awt.BorderLayout.CENTER);                

                tablePanel.add(getTopPanel(), java.awt.BorderLayout.NORTH);

            }

            return tablePanel;

        }

        /**

         * This method initializes jScrollPane

         *

         * @return javax.swing.JScrollPane

         */

        private JScrollPane getJScrollPane() {

                if (jScrollPane == null) {

                        jScrollPane = new JScrollPane();

                        jScrollPane.setViewportView(getCenterPanel());

                }

                return jScrollPane;

        }

        public void update(Observable observable, Object notification) {

                if (notification instanceof FeatureStoreNotification){

                        FeatureStoreNotification featureStoreNotification =

                                        (FeatureStoreNotification) notification;

                        //If the edition finish the command stack disappears

                        String type = featureStoreNotification.getType();

                        if (FeatureStoreNotification.AFTER_FINISHEDITING.equals(type) ||

                                        FeatureStoreNotification.AFTER_CANCELEDITING.equals(type)){                                                        

                                ApplicationLocator.getManager().getUIManager().closeWindow(this);                                

                                featureStoreNotification.getSource().deleteObserver(this);

                                return;

                        }

                        //Only repaint if the event is a selection event or an edition event

                        if (FeatureStoreNotification.AFTER_INSERT.equals(type) ||

                FeatureStoreNotification.AFTER_DELETE.equals(type) ||

                FeatureStoreNotification.AFTER_UPDATE.equals(type) ||

                FeatureStoreNotification.SELECTION_CHANGE.equals(type) ||

                FeatureStoreNotification.AFTER_REDO.equals(type) ||

                FeatureStoreNotification.AFTER_UNDO.equals(type)) {                   

                            commandRepaint();

                        }                        

                }

        }

        public Object getWindowProfile() {

                return WindowInfo.DIALOG_PROFILE;

        }

}