net.sourceforge.eclipsetrader.ats.ui.tradingsystem.properties.GeneralPage.java Source code

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Here is the source code for net.sourceforge.eclipsetrader.ats.ui.tradingsystem.properties.GeneralPage.java

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/*
 * Copyright (c) 2004-2007 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.ats.ui.tradingsystem.properties;

import net.sourceforge.eclipsetrader.ats.core.db.TradingSystem;
import net.sourceforge.eclipsetrader.core.CorePlugin;
import net.sourceforge.eclipsetrader.core.db.Account;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

public class GeneralPage extends PreferencePage {
    Text name;

    ComboViewer account;

    ComboViewer tradingProvider;

    TradingSystem system;

    public GeneralPage(TradingSystem system) {
        super("General");
        this.system = system;
        noDefaultAndApplyButton();
    }

    /* (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("Name");
        label.setLayoutData(new GridData(127, SWT.DEFAULT));
        name = new Text(content, SWT.BORDER);
        name.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
        name.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                setValid(isValid());
            }
        });

        label = new Label(content, SWT.NONE);
        label.setText("Account");
        label.setLayoutData(new GridData(127, SWT.DEFAULT));
        account = new ComboViewer(content, SWT.READ_ONLY);
        account.getControl().setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
        account.setContentProvider(new ArrayContentProvider());
        account.setLabelProvider(new LabelProvider() {
            public String getText(Object element) {
                return ((Account) element).getDescription();
            }
        });
        account.setInput(CorePlugin.getRepository().allAccounts().toArray());
        account.addSelectionChangedListener(new ISelectionChangedListener() {
            public void selectionChanged(SelectionChangedEvent event) {
                setValid(isValid());
            }
        });

        label = new Label(content, SWT.NONE);
        label.setText("Trading Provider");
        label.setLayoutData(new GridData(127, SWT.DEFAULT));
        tradingProvider = new ComboViewer(content, SWT.READ_ONLY);
        tradingProvider.getControl().setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
        tradingProvider.setContentProvider(new ArrayContentProvider());
        tradingProvider.setLabelProvider(new LabelProvider() {
            public String getText(Object element) {
                return ((IConfigurationElement) element).getAttribute("name");
            }
        });
        tradingProvider.addSelectionChangedListener(new ISelectionChangedListener() {
            public void selectionChanged(SelectionChangedEvent event) {
                setValid(isValid());
            }
        });

        IExtensionRegistry registry = Platform.getExtensionRegistry();
        IExtensionPoint extensionPoint = registry.getExtensionPoint(CorePlugin.TRADING_PROVIDERS_EXTENSION_POINT);
        if (extensionPoint != null)
            tradingProvider.setInput(extensionPoint.getConfigurationElements());

        performDefaults();

        return content;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#performDefaults()
     */
    protected void performDefaults() {
        name.setText(system.getName());
        account.setSelection(new StructuredSelection(system.getAccount()));

        IConfigurationElement[] elements = (IConfigurationElement[]) tradingProvider.getInput();
        for (int i = 0; i < elements.length; i++) {
            if (elements[i].getAttribute("id").equals(system.getTradingProviderId()))
                tradingProvider.setSelection(new StructuredSelection(elements[i]));
        }
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#isValid()
     */
    public boolean isValid() {
        if (getControl() == null)
            return super.isValid();

        if (name.getText().length() == 0)
            return false;
        if (account.getSelection() == null || account.getSelection().isEmpty())
            return false;
        if (tradingProvider.getSelection() == null || tradingProvider.getSelection().isEmpty())
            return false;

        return true;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#performOk()
     */
    public boolean performOk() {
        if (getControl() != null) {
            system.setName(name.getText());
            system.setAccount((Account) ((IStructuredSelection) account.getSelection()).getFirstElement());

            IConfigurationElement element = (IConfigurationElement) ((IStructuredSelection) tradingProvider
                    .getSelection()).getFirstElement();
            system.setTradingProviderId(element.getAttribute("id"));
        }
        return super.performOk();
    }
}