level2view.java

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

        super.saveState(memento);
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
     */
    public void createPartControl(Composite parent)
    {
        DropTarget target = new DropTarget(parent, DND.DROP_COPY|DND.DROP_MOVE);
        target.setTransfer(new Transfer[] { SecurityTransfer.getInstance() });
        target.addDropListener(dropTargetListener);
        
        Composite content = new Composite(parent, SWT.NONE);
        GridLayout gridLayout = new GridLayout();
        gridLayout.marginWidth = gridLayout.marginHeight = 0;
        gridLayout.horizontalSpacing = 0;
        gridLayout.verticalSpacing = 0;
        content.setLayout(gridLayout);

        IThemeManager themeManager = PlatformUI.getWorkbench().getThemeManager();
        theme = themeManager.getCurrentTheme();
        bandBackground[0] = theme.getColorRegistry().get(LEVEL_1_BACKGROUND);
        bandForeground[0] = theme.getColorRegistry().get(LEVEL_1_FOREGROUND);
        bandBackground[1] = theme.getColorRegistry().get(LEVEL_2_BACKGROUND);
        bandForeground[1] = theme.getColorRegistry().get(LEVEL_2_FOREGROUND);
        bandBackground[2] = theme.getColorRegistry().get(LEVEL_3_BACKGROUND);
        bandForeground[2] = theme.getColorRegistry().get(LEVEL_3_FOREGROUND);
        bandBackground[3] = theme.getColorRegistry().get(LEVEL_4_BACKGROUND);
        bandForeground[3] = theme.getColorRegistry().get(LEVEL_4_FOREGROUND);
        bandBackground[4] = theme.getColorRegistry().get(LEVEL_5_BACKGROUND);
        bandForeground[4] = theme.getColorRegistry().get(LEVEL_5_FOREGROUND);
        theme.addPropertyChangeListener(themeChangeListener);

        info = new Composite(content, SWT.NONE);
        gridLayout = new GridLayout(4, false);
        gridLayout.marginWidth = 3;
        gridLayout.marginHeight = 3;
        gridLayout.verticalSpacing = 2;
        gridLayout.horizontalSpacing = 10;
        info.setLayout(gridLayout);
        info.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        info.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e)
            {
                // Disegna il bordo inferiore
                Rectangle r = info.getClientArea();
                e.gc.setForeground(info.getDisplay().getSystemColor(SWT.COLOR_GRAY));
                e.gc.drawLine(0, r.height - 1, r.width, r.height - 1);
            }
        });
        Label label = new Label(info, SWT.NONE);
        label.setText("Time"); //$NON-NLS-1$
        time = new Label(info, SWT.RIGHT);
        time.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        label = new Label(info, SWT.NONE);
        label.setText("Volume"); //$NON-NLS-1$
        volume = new Label(info, SWT.RIGHT);
        volume.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
        label = new Label(info, SWT.NONE);
        label.setText("Last Price"); //$NON-NLS-1$
        last = new Label(info, SWT.NONE);
        last.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false));
        label = new Label(info, SWT.NONE);
        label.setText("High"); //$NON-NLS-1$
        high = new Label(info, SWT.NONE);
        high.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false));
        label = new Label(info, SWT.NONE);
        label.setText("Change"); //$NON-NLS-1$
        change = new Label(info, SWT.NONE);
        change.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false));
        label = new Label(info, SWT.NONE);
        label.setText("Low"); //$NON-NLS-1$
        low = new Label(info, SWT.NONE);
        low.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false));

        trendbar = new Trendbar(content, SWT.NONE);
        GridData gridData = new GridData();
        gridData.grabExcessHorizontalSpace = true;
        gridData.horizontalAlignment = SWT.FILL;
        gridData.heightHint = 16;
        trendbar.setLayoutData(gridData);
        trendbar.setBandColors(bandBackground);
        trendbar.setIndicatorColor(theme.getColorRegistry().get(TRENDBAR_INDICATOR));

        table = new Table(content, SWT.SINGLE|SWT.FULL_SELECTION|SWT.HIDE_SELECTION);
        table.setLayoutData(new GridData(GridData.FILL_BOTH));
        table.setHeaderVisible(true);
        table.setLinesVisible(false);
        background = table.getBackground();
        emptyBackground = parent.getBackground();
        table.setBackground(emptyBackground);
        TableColumn column = new TableColumn(table, SWT.NONE);
        column.setWidth(0);
        column.setResizable(false);
        column = new TableColumn(table, SWT.CENTER);
        column.setText("#");
        column = new TableColumn(table, SWT.CENTER);
        column.setText("Q.ty");
        column = new TableColumn(table, SWT.CENTER);
        column.setText("Bid");
        column = new TableColumn(table, SWT.CENTER);
        column.setText("Ask");
        column = new TableColumn(table, SWT.CENTER);
        column.setText("Q.ty");
        column = new TableColumn(table, SWT.CENTER);
        column.setText("#");
        table.addControlListener(new ControlAdapter() {
            public void controlResized(ControlEvent e)
            {
                table.setRedraw(false);
                updateColumnWidth();
                table.setRedraw(true);
            }
        });
        table.addFocusListener(new FocusAdapter() {
            public void focusGained(FocusEvent e)
            {
                ((Table)e.widget).deselectAll();
                info.getParent().setFocus();
            }
        });
        
        IMenuManager menuManager = getViewSite().getActionBars().getMenuManager();
        menuManager.add(toggleLevelColorsAction);
        menuManager.add(togglePriceGroupingAction);
        menuManager.add(toggleFollowSelectionAction);
        getViewSite().getActionBars().updateActionBars();

        if (security != null)
        {
            setPartName(security.getDescription());
            loadPreferences();
            content.getDisplay().asyncExec(new Runnable() {
                public void run()
                {
                    updateInfo();
                    updateTable();

                    security.addObserver(Level2View.this);
                    security.getQuoteMonitor().addObserver(Level2View.this);
                    security.getLevel2Monitor().addObserver(Level2View.this);
                    Level2FeedMonitor.monitor(security);
                }
            });
        }
        getSite().getPage().addSelectionListener(this);
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.part.WorkbenchPart#setFocus()
     */
    public void setFocus()
    {
        info.getParent().setFocus();
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.part.WorkbenchPart#dispose()
     */
    public void dispose()
    {
        if (security != null)
        {
            security.deleteObserver(this);
            security.getQuoteMonitor().deleteObserver(this);
            security.getLevel2Monitor().deleteObserver(this);
            Level2FeedMonitor.cancelMonitor(security);

            savePreferences();
        }
        
        if (theme != null)
            theme.removePropertyChangeListener(themeChangeListener);
        
        background.dispose();
        negativeForeground.dispose();
        positiveForeground.dispose();
        emptyBackground.dispose();
        getSite().getPage().removeSelectionListener(this);
        
        super.dispose();
    }

    protected void loadPreferences()
    {
        preferences = new PreferenceStore(getPreferenceStoreLocation(security).toOSString());
        preferences.setDefault(PREFS_SECONDARY_ID, "");
        preferences.setDefault(PREFS_GROUP_PRICES, DEFAULT_GROUP_PRICES);
        preferences.setDefault(PREFS_COLOR_LEVELS, DEFAULT_COLOR_LEVELS);
        preferences.setDefault(PREFS_FOLLOW_SELECTION, DEFAULT_FOLLOW_SELECTION);

        try {
            preferences.load();
        } catch(Exception e) {
            // Reads the preferences from the old-style preference store
            String[] prefs = TradingPlugin.getDefault().getPluginPreferences().getString(PREFERENCES_ID + String.valueOf(security.getId())).split(",");
            if (prefs.length > 0)
                preferences.setValue(PREFS_GROUP_PRICES, prefs[0].equals("true"));
            if (prefs.length > 1)
                preferences.setValue(PREFS_COLOR_LEVELS, prefs[1].equals("true"));
            if (prefs.length > 2)
            	preferences.setValue(PREFS_FOLLOW_SELECTION, prefs[2].equals("true"));
            TradingPlugin.getDefault().getPluginPreferences().setValue(PREFERENCES_ID + String.valueOf(security.getId()), "");
        }                

        groupPrices = preferences.getBoolean(PREFS_GROUP_PRICES);
        colorLevels = preferences.getBoolean(PREFS_COLOR_LEVELS);
        followSelection = preferences.getBoolean(PREFS_FOLLOW_SELECTION);

        // Save the secondary id value immediately, so subsequent level2 requests for the same
        // security will open this view
        preferences.setValue(PREFS_SECONDARY_ID, getViewSite().getSecondaryId());
        try {
            preferences.save();
        } catch(Exception e) {
            LogFactory.getLog(getClass()).warn(e);
        }

        toggleLevelColorsAction.setChecked(colorLevels);
        togglePriceGroupingAction.setChecked(groupPrices);
        toggleFollowSelectionAction.setChecked(followSelection);
    }

    protected void savePreferences()
    {
        preferences.setFilename(getPreferenceStoreLocation(security).toOSString());
        preferences.setValue(PREFS_GROUP_PRICES, groupPrices);
        preferences.setValue(PREFS_COLOR_LEVELS, colorLevels);
        preferences.setValue(PREFS_FOLLOW_SELECTION, followSelection);

        try {
            preferences.save();
        } catch(Exception e) {
            LogFactory.getLog(getClass()).warn(e);
        }
    }
    
    public void setSecurity(Security newSecurity)
    {
        if (security == null)
        {
            security = newSecurity;
            loadPreferences();
        }
        else
        {
            security.deleteObserver(this);
            security.getQuoteMonitor().deleteObserver(this);
            security.getLevel2Monitor().deleteObserver(this);
            Level2FeedMonitor.cancelMonitor(security);

            preferences.setValue(PREFS_SECONDARY_ID, "");
            savePreferences();
            
            security = newSecurity;
            
            preferences.setValue(PREFS_SECONDARY_ID, getViewSite().getSecondaryId());
            savePreferences();
        }
        
        updateInfo();
        updateTable();

        security.addObserver(this);
        security.getQuoteMonitor().addObserver(this);
        security.getLevel2Monitor().addObserver(this);
        Level2FeedMonitor.monitor(security);
    }
    
    void updateInfo()
    {
        if (!getPartName().equals(security.getDescription()))
            setPartName(security.getDescription());

        if (security.getQuote() != null)
        {
            if (security.getQuote().getDate() != null)
                time.setText(dateFormatter.format(security.getQuote().getDate()));
            volume.setText(numberFormatter.format(security.getQuote().getVolume()));
            last.setText(priceFormatter2.format(security.getQuote().getLast()));
            if (security.getClose() != null)
            {
                double chg = (security.getQuote().getLast() - security.getClose().doubleValue()) / security.getClose().doubleValue() * 100;
                if (chg > 0)
                {
                    change.setText("+" + percentFormatter.format(chg) + "%"); //$NON-NLS-1$ //$NON-NLS-2$
                    change.setForeground(positiveForeground);
                }
                else
                {
                    change.setText(percentFormatter.format(chg) + "%"); //$NON-NLS-1$ //$NON-NLS-2$
                    if (chg < 0)
                        change.setForeground(negativeForeground);
                    else
                        change.setForeground(null);
                }
            }
        }
        if (security.getHigh() != null)
            high.setText(priceFormatter2.format(security.getHigh()));