itempreferencepage.java

EclipseTrader is a stock exchange analysis system, featuring shares pricing watch, intraday and hi

/*
 * Copyright (c) 2004-2006 Marco Maccaferri and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Marco Maccaferri - initial API and implementation
 */

package net.sourceforge.eclipsetrader.trading.wizards;

import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import net.sourceforge.eclipsetrader.core.CorePlugin;
import net.sourceforge.eclipsetrader.core.db.Alert;
import net.sourceforge.eclipsetrader.core.db.WatchlistItem;
import net.sourceforge.eclipsetrader.trading.AlertPlugin;
import net.sourceforge.eclipsetrader.trading.AlertPluginPreferencePage;
import net.sourceforge.eclipsetrader.trading.TradingPlugin;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

public class ItemPreferencePage extends PreferencePage
{
    private WatchlistItem watchlistItem;
    private Text position;
    private Text price;
    private Table alerts;
    private Button delete;
    private Button reset;
    private Composite group;
    private NumberFormat priceFormatter = NumberFormat.getInstance();

    public ItemPreferencePage(WatchlistItem watchlistItem)
    {
        super(watchlistItem.getSecurity().getDescription());
        this.watchlistItem = watchlistItem;

        priceFormatter.setGroupingUsed(true);
        priceFormatter.setMinimumIntegerDigits(1);
        priceFormatter.setMinimumFractionDigits(4);
        priceFormatter.setMaximumFractionDigits(4);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
     */
    protected Control createContents(Composite parent)
    {
        Composite content = new Composite(parent, SWT.NONE);
        GridLayout gridLayout = new GridLayout(2, false);
        gridLayout.marginWidth = gridLayout.marginHeight = 0;
        content.setLayout(gridLayout);
        content.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
        
        Label label = new Label(content, SWT.NONE);
        label.setText("Position");
        label.setLayoutData(new GridData(125, SWT.DEFAULT));
        position = new Text(content, SWT.BORDER);
        position.setLayoutData(new GridData(80, SWT.DEFAULT));
        if (watchlistItem.getPosition() != null)
            position.setText(String.valueOf(watchlistItem.getPosition()));
        
        label = new Label(content, SWT.NONE);
        label.setText("Price");
        label.setLayoutData(new GridData(125, SWT.DEFAULT));
        price = new Text(content, SWT.BORDER);
        price.setLayoutData(new GridData(80, SWT.DEFAULT));
        price.addFocusListener(new FocusAdapter() {
            public void focusLost(FocusEvent e)
            {
                if (price.getText().length() != 0)
                    try {
                        double value = priceFormatter.parse(price.getText()).doubleValue();
                        price.setText(priceFormatter.format(value));
                    } catch(Exception e1) {
                        CorePlugin.logException(e1);
                    }
            }
        });
        if (watchlistItem.getPaidPrice() != null)
            price.setText(priceFormatter.format(watchlistItem.getPaidPrice()));

        Group section = new Group(content, SWT.NONE);
        section.setText("Alerts");
        section.setLayout(new GridLayout(2, false));
        section.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true, 2, 1));

        alerts = new Table(section, SWT.SINGLE|SWT.FULL_SELECTION);
        GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, false);
        gridData.widthHint = 250;
        gridData.heightHint = alerts.getItemHeight() * 5;
        alerts.setLayoutData(gridData);
        alerts.setHeaderVisible(true);
        alerts.setLinesVisible(false);
        alerts.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e)
            {
                if (alerts.getSelectionIndex() != -1)
                {
                    ((StackLayout)group.getLayout()).topControl = group.getChildren()[alerts.getSelectionIndex()];
                    reset.setEnabled(((CTabFolder)alerts.getItem(alerts.getSelectionIndex()).getData("folder")).getData("last") != null);
                }
                else
                    reset.setEnabled(false);
                delete.setEnabled(alerts.getSelectionIndex() != -1);
                group.layout();
            }
        });
        alerts.addMouseListener(new MouseAdapter() {
            public void mouseDown(MouseEvent e)
            {
                if (alerts.getItem(new Point(e.x, e.y)) == null)
                {
                    alerts.deselectAll();
                    ((StackLayout)group.getLayout()).topControl = null; 
                    group.layout();
                    delete.setEnabled(false);
                }
            }
        });
        TableColumn column = new TableColumn(alerts, SWT.NONE);
        column.setText("Description");
        column = new TableColumn(alerts, SWT.NONE);
        column.setText("Last");

        Composite buttons = new Composite(section, SWT.NONE);
        gridLayout = new GridLayout();
        gridLayout.marginWidth = gridLayout.marginHeight = 0;
        buttons.setLayout(gridLayout);
        buttons.setLayoutData(new GridData(GridData.BEGINNING, GridData.FILL, false, false));
        
        ISharedImages images = PlatformUI.getWorkbench().getSharedImages();
        delete = new Button(buttons, SWT.PUSH);
        delete.setImage(images.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE).createImage());
        delete.setToolTipText("Delete selected alert");
        delete.setEnabled(false);
        delete.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e)
            {
                if (alerts.getSelectionIndex() != -1)
                {
                    int index = alerts.getSelectionIndex();
                    ((CTabFolder)alerts.getItem(index).getData("folder")).dispose();
                    alerts.getItem(index).dispose();
                }
                ((StackLayout)group.getLayout()).topControl = null; 
                group.layout();
                delete.setEnabled(false);
            }
        });
        reset = new Button(buttons, SWT.PUSH);
        reset.setImage(images.getImageDescriptor(ISharedImages.IMG_TOOL_UNDO).createImage());
        reset.setToolTipText("Reset last seen");
        reset.setEnabled(false);
        reset.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e)
            {
                if (alerts.getSelectionIndex() != -1)
                {
                    int index = alerts.getSelectionIndex();
                    ((CTabFolder)alerts.getItem(index).getData("folder")).setData("last", null);
                    alerts.getItem(index).setText(1, "");
                }
                reset.setEnabled(false);
            }
        });
        
        group = new Composite(section, SWT.NONE);
        group.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true, 2, 1));
        group.setLayout(new StackLayout());
        
        for (Iterator iter = watchlistItem.getAlerts().iterator(); iter.hasNext(); )
        {
            Alert alert = (Alert) iter.next();
            AlertPlugin plugin = (AlertPlugin)alert.getData();
            if (plugin == null)
            {
                plugin = TradingPlugin.createAlertPlugin(alert.getPluginId());
                plugin.init(watchlistItem.getSecurity(), alert.getParameters());
                alert.setData(plugin);
            }
            TableItem tableItem = new TableItem(alerts, SWT.NONE);
            tableItem.setText(0, plugin.getDescription() + " (" + TradingPlugin.getAlertPluginName(alert.getPluginId()) + ")");
            if (alert.getLastSeen() != null)
                tableItem.setText(1, new SimpleDateFormat("dd/MM/yyyy HH:mm:ss").format(alert.getLastSeen()));
            tableItem.setData(alert);
            
            CTabFolder folder = new CTabFolder(group, SWT.TOP|SWT.FLAT|SWT.BORDER);
            folder.setMaximizeVisible(false);
            folder.setMinimizeVisible(false);
            folder.setSimple(PlatformUI.getPreferenceStore().getBoolean("SHOW_TRADITIONAL_STYLE_TABS"));
            folder.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true, 2, 1));
            folder.setData(alert);
            folder.setData("last", plugin.getLastSeen());
            tableItem.setData("folder", folder);

            IConfigurationElement[] pages = TradingPlugin.getAlertPluginPreferencePages(alert.getPluginId());
            for (int i = 0; i < pages.length; i++)
            {
                CTabItem tabItem = new CTabItem(folder, SWT.NONE);
                Composite itemContent = new Composite(folder, SWT.NONE);
                itemContent.setLayout(new GridLayout());
                tabItem.setControl(itemContent);

                tabItem.setText(pages[i].getAttribute("name"));
                if (pages[i].getAttribute("description") != null)
                    tabItem.setToolTipText(pages[i].getAttribute("description"));
                
                try {
                    AlertPluginPreferencePage page = (AlertPluginPreferencePage)pages[i].createExecutableExtension("class");
                    page.init(watchlistItem.getSecurity(), alert.getParameters());
                    page.createContents(itemContent);
                    tabItem.setData(page);
                } catch(Exception e) {
                    e.printStackTrace();
                }
                
                folder.setSelection(0);
            }
        }

        for (int i = 0; i < alerts.getColumnCount(); i++)
            alerts.getColumn(i).pack();
        
        return content;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#performOk()
     */
    public boolean performOk()
    {
        if (group != null)
        {
            if (position.getText().length() != 0)
                watchlistItem.setPosition(Integer.parseInt(position.getText()));
            else
                watchlistItem.setPaidPrice(null);

            if (price.getText().length() != 0)
            {
                try {
                    watchlistItem.setPaidPrice(priceFormatter.parse(price.getText()).doubleValue());
                } catch(Exception e1) {
                    CorePlugin.logException(e1);
                }
            }
            else
                watchlistItem.setPaidPrice(null);

            watchlistItem.getAlerts().clear();
            
            Control[] childs = group.getChildren();
            for (int i = 0; i < childs.length; i++)
            {
                Map parameters = new HashMap();
                CTabItem[] items = ((CTabFolder)childs[i]).getItems();
                for (int p = 0; p < items.length; p++)
                {
                    AlertPluginPreferencePage page = (AlertPluginPreferencePage)items[p].getData();
                    page.performOk();
                    parameters.putAll(page.getParameters());
                }
                Alert alert = (Alert)childs[i].getData();
                alert.setParameters(parameters);
                alert.setLastSeen((Date)((CTabFolder)alerts.getItem(i).getData("folder")).getData("last"));
                ((AlertPlugin)alert.getData()).init(parameters);
                ((AlertPlugin)alert.getData()).setLastSeen(alert.getLastSeen());
                watchlistItem.getAlerts().add(alert);
                watchlistItem.setChanged();
            }
            
            watchlistItem.notifyObservers();
        }
        
        return super.performOk();
    }
}