/*
* Copyright (c) 2004-2011 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 org.eclipsetrader.ui.internal.charts;
import java.io.StringReader;
import java.io.StringWriter;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipsetrader.ui.internal.UIActivator;
import org.eclipsetrader.ui.internal.ats.TimeSpanDialog;
public class ChartPeriodsPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
private ListViewer viewer;
private Button add;
private Button edit;
private Button remove;
private PeriodList list = new PeriodList();
public ChartPeriodsPreferencePage() {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
*/
@Override
public void init(IWorkbench workbench) {
setPreferenceStore(UIActivator.getDefault().getPreferenceStore());
}
/* (non-Javadoc)
* @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createContents(Composite parent) {
Composite content = new Composite(parent, SWT.NONE);
GridLayout gridLayout = new GridLayout(2, false);
gridLayout.verticalSpacing = convertVerticalDLUsToPixels(2);
content.setLayout(gridLayout);
viewer = new ListViewer(content, SWT.BORDER | SWT.MULTI);
viewer.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
viewer.setContentProvider(new ArrayContentProvider());
viewer.setLabelProvider(new LabelProvider() {
@Override
public String getText(Object element) {
return ((Period) element).getDescription();
}
});
viewer.setComparator(new ViewerComparator() {
@Override
public int compare(Viewer viewer, Object e1, Object e2) {
Period p1 = (Period) e1;
Period p2 = (Period) e2;
if (p1.getPeriod().higherThan(p2.getPeriod())) {
return -1;
}
if (p2.getPeriod().higherThan(p1.getPeriod())) {
return 1;
}
return 0;
}
});
viewer.setInput(list);
Composite buttons = new Composite(content, SWT.NONE);
gridLayout = new GridLayout(1, false);
gridLayout.marginWidth = gridLayout.marginHeight = 0;
buttons.setLayout(gridLayout);
buttons.setLayoutData(new GridData(SWT.CENTER, SWT.TOP, false, false));
add = new Button(buttons, SWT.PUSH);
add.setText("Add");
add.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
add.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
PeriodDialog dlg = new PeriodDialog(getShell());
if (dlg.open() == TimeSpanDialog.OK) {
list.add(dlg.getSelection());
viewer.refresh();
}
}
});
edit = new Button(buttons, SWT.PUSH);
edit.setText("Edit");
edit.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
edit.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
if (selection.size() != 1) {
return;
}
Period period = (Period) selection.getFirstElement();
PeriodDialog dlg = new PeriodDialog(getShell(), period);
if (dlg.open() == TimeSpanDialog.OK) {
viewer.refresh();
}
}
});
edit.setEnabled(false);
remove = new Button(buttons, SWT.PUSH);
remove.setText("Remove");
remove.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
remove.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
list.removeAll(selection.toList());
viewer.refresh();
}
});
remove.setEnabled(false);
performDefaults();
viewer.addSelectionChangedListener(new ISelectionChangedListener() {
@Override
public void selectionChanged(SelectionChangedEvent event) {
edit.setEnabled(((IStructuredSelection) event.getSelection()).size() == 1);
remove.setEnabled(!event.getSelection().isEmpty());
}
});
return content;
}
/* (non-Javadoc)
* @see org.eclipse.jface.preference.PreferencePage#performDefaults()
*/
@Override
protected void performDefaults() {
list.clear();
try {
JAXBContext jaxbContext = JAXBContext.newInstance(PeriodList.class);
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
StringReader stream = new StringReader(getPreferenceStore().getString(UIActivator.PREFS_CHART_PERIODS));
list.addAll((PeriodList) unmarshaller.unmarshal(stream));
} catch (Exception e) {
e.printStackTrace();
}
viewer.refresh();
super.performDefaults();
}
/* (non-Javadoc)
* @see org.eclipse.jface.preference.PreferencePage#performOk()
*/
@Override
public boolean performOk() {
try {
StringWriter string = new StringWriter();
JAXBContext jaxbContext = JAXBContext.newInstance(list.getClass());
Marshaller marshaller = jaxbContext.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.FALSE);
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8"); //$NON-NLS-1$
marshaller.marshal(list, string);
getPreferenceStore().setValue(UIActivator.PREFS_CHART_PERIODS, string.toString());
} catch (Exception e) {
e.printStackTrace();
}
return super.performOk();
}
}