RCPContext.java

/*****************************************************************************
 *  Limpet - the Lightweight InforMation ProcEssing Toolkit
 *  http://limpet.info
 *
 *  (C) 2015-2016, Deep Blue C Technologies Ltd
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Eclipse Public License v1.0
 *  (http://www.eclipse.org/legal/epl-v10.html)
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *****************************************************************************/
package info.limpet.ui;

import info.limpet.IContext;

import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;

public class RCPContext implements IContext
{

  @Override
  public String getInput(String title, String description, String defaultText)
  {
    InputDialog dlgName =
        new InputDialog(Display.getCurrent().getActiveShell(), title,
            description, defaultText, null);
    if (dlgName.open() == Window.OK)
    {
      // User clicked OK; update the label with the input
      return dlgName.getValue();
    }
    else
    {
      return null;
    }

  }

  @Override
  public void logError(Status status, String message, Exception e)
  {
    final int statCode;

    switch (status)
    {
    case INFO:
      statCode = org.eclipse.core.runtime.Status.INFO;
      break;
    case WARNING:
      statCode = org.eclipse.core.runtime.Status.WARNING;
      break;
    case ERROR:
      statCode = org.eclipse.core.runtime.Status.ERROR;
      break;
    default:
      statCode = org.eclipse.core.runtime.Status.ERROR;
      Activator.logError(statCode,
          "RCPContext failed to recognise status code:" + status, null);
    }

    Activator.logError(statCode, message, e);
  }

  private Shell getShell()
  {
    IWorkbenchWindow window =
        PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    return window.getShell();
  }

  @Override
  public void openWarning(String title, String message)
  {
    MessageDialog.openWarning(getShell(), title, message);
  }

  @Override
  public void openInformation(String title, String message)
  {
    MessageDialog.openInformation(getShell(), title, message);
  }

  @Override
  public String getCsvFilename()
  {
    FileDialog dialog = new FileDialog(getShell(), SWT.SAVE);
    final String[] filterNames;
    final String[] filterExtensions;
    String filterPath = "";
    if (SWT.getPlatform().equals("win32"))
    {
      filterNames = new String[]
      {"Csv File", "All Files (*.*)"};
      filterExtensions = new String[]
      {"*.csv", "*.*"};
    }
    else
    {
      filterNames = new String[]
      {"Csv File", "All Files (*)"};
      filterExtensions = new String[]
      {"*.csv", "*"};
    }
    dialog.setFilterNames(filterNames);
    dialog.setFilterExtensions(filterExtensions);
    dialog.setFilterPath(filterPath);
    dialog.setFileName("limpet_out.csv");
    return dialog.open();
  }

  @Override
  public boolean openQuestion(String title, String message)
  {
    return MessageDialog.openQuestion(getShell(), title, message);
  }

  @Override
  public void openError(String title, String message)
  {
    MessageDialog.openError(getShell(), title, message);
  }

  @Override
  public void log(Exception e)
  {
    Activator.log(e);
  }

  @Override
  public void placeOnClipboard(String text)
  {
    final Clipboard cb = new Clipboard(Display.getCurrent());
    TextTransfer textTransfer = TextTransfer.getInstance();
    cb.setContents(new Object[]
    {text}, new Transfer[]
    {textTransfer});
  }
}