/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *         http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.argeo.cms.ui.workbench.useradmin;
  
  import java.util.ArrayList;
  
  import org.argeo.cms.ui.workbench.WorkbenchUiPlugin;
  import org.argeo.node.ArgeoLogListener;
  import org.argeo.node.ArgeoLogger;
  import org.eclipse.jface.resource.JFaceResources;
  import org.eclipse.jface.viewers.LabelProvider;
  import org.eclipse.jface.viewers.TableViewer;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.graphics.Font;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Table;
  import org.eclipse.ui.part.ViewPart;
  
  /**
   * Display log lines with a virtual table. Register and unregisters a
   * {@link ArgeoLogListener} via OSGi services.
   */
  public class LogView extends ViewPart {
  	public static String ID = WorkbenchUiPlugin.PLUGIN_ID + ".logView";
  
  	private TableViewer viewer;
  
  	private LogContentProvider logContentProvider;
  	private ArgeoLogger argeoLogger;
  
  	@Override
  	public void createPartControl(Composite parent) {
  		Font font = JFaceResources.getTextFont();
  		Table table = new Table(parent, SWT.VIRTUAL | SWT.MULTI | SWT.H_SCROLL
  				| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
  		table.setFont(font);
  
  		viewer = new TableViewer(table);
  		viewer.setLabelProvider(new LabelProvider());
  		logContentProvider = new LogContentProvider(viewer);
  		viewer.setContentProvider(logContentProvider);
  		// viewer.setUseHashlookup(true);
  		viewer.setInput(new ArrayList<String>());
  
  		if (argeoLogger != null)
  			argeoLogger.register(logContentProvider, 1000);
  	}
  
  	@Override
  	public void setFocus() {
  		viewer.getTable().setFocus();
  	}
  
  	@Override
  	public void dispose() {
  		if (argeoLogger != null)
  			argeoLogger.unregister(logContentProvider);
  	}
  
  	public void setArgeoLogger(ArgeoLogger argeoLogger) {
  		this.argeoLogger = argeoLogger;
  	}
  
  }