/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation 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:
 *     CSC - Intial implementation
 *     IBM Corporation - ongoing maintenance
 *******************************************************************************/
package org.eclipse.team.internal.ccvs.ui;

import org.eclipse.jface.viewers.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.*;
import org.eclipse.team.internal.ccvs.core.EditorsInfo;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.ViewPart;

/**
 * 
 * The <code>EditorsView shows the result of cvs editors command
 * 
 * @author <a href="mailto:gregor.kohlwes@csc.com,kohlwes@gmx.net">Gregor Kohlwes
 * @see org.eclipse.team.internal.ccvs.ui.actions.ShowEditorsAction
 */
public class EditorsView extends ViewPart {
	public static final String VIEW_ID = "org.eclipse.team.ccvs.ui.EditorsView"; //$NON-NLS-1$

	private Table table;
	private TableViewer tableViewer;

	class EditorsContentProvider implements IStructuredContentProvider {

		/**
		 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
		 */
		public Object[] getElements(Object inputElement) {
			return (EditorsInfo[]) inputElement;
		}

		/**
		 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
		 */
		public void dispose() {
		}

		/**
		 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
		 */
		public void inputChanged(
			Viewer viewer,
			Object oldInput,
			Object newInput) {
		}

	}

	class EditorsLabelProvider implements ITableLabelProvider {
		/**
		 * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int)
		 */
		public Image getColumnImage(Object element, int columnIndex) {
			return null;
		}

		/**
		 * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int)
		 */
		public String getColumnText(Object element, int columnIndex) {
			if (element == null)
				return ""; //$NON-NLS-1$
			EditorsInfo info = (EditorsInfo) element;

			String result = null;
			switch (columnIndex) {
				case 0 :
					result = info.getFileName();
					break;
				case 1 :
					result = info.getUserName();
					break;
				case 2 :
					result = info.getDateString();
					break;
				case 3 :
					result = info.getComputerName();
					break;
			}
			// This method must not return null
			if (result == null) result = ""; //$NON-NLS-1$
			return result;

		}

		/**
		 * @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.jface.viewers.ILabelProviderListener)
		 */
		public void addListener(ILabelProviderListener listener) {
		}

		/**
		 * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()
		 */
		public void dispose() {
		}

		/**
		 * @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang.Object, java.lang.String)
		 */
		public boolean isLabelProperty(Object element, String property) {
			return false;
		}

		/**
		 * @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse.jface.viewers.ILabelProviderListener)
		 */
		public void removeListener(ILabelProviderListener listener) {
		}

	}

	/**
	 * @see org.eclipse.ui.IWorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite parent) {
		table =	new Table(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION);
		table.setHeaderVisible(true);
		table.setLinesVisible(true);

		GridData gridData = new GridData(GridData.FILL_BOTH);
		gridData.widthHint=500;
		gridData.heightHint=100;
		table.setLayoutData(gridData);

		TableLayout layout = new TableLayout();
		table.setLayout(layout);

		tableViewer = new TableViewer(table);
		createColumns(table, layout);

		tableViewer.setContentProvider(new EditorsContentProvider());
		tableViewer.setLabelProvider(new EditorsLabelProvider());
		// set F1 help
        PlatformUI.getWorkbench().getHelpSystem().setHelp(tableViewer.getControl(), IHelpContextIds.CVS_EDITORS_VIEW);
	}
	public void setInput(EditorsInfo[] infos) {
		tableViewer.setInput(infos);
	}
	/**
	 * Method createColumns.
	 * @param table
	 * @param layout
	 * @param viewer
	 */
	private void createColumns(Table table, TableLayout layout) {

		TableColumn col;
		// file name
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(CVSUIMessages.EditorsView_file); 
		layout.addColumnData(new ColumnWeightData(30, true));

		// user name
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(CVSUIMessages.EditorsView_user); 
		layout.addColumnData(new ColumnWeightData(20, true));

		// creation date
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(CVSUIMessages.EditorsView_date); 
		layout.addColumnData(new ColumnWeightData(30, true));

		// computer name
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(CVSUIMessages.EditorsView_computer); 
		layout.addColumnData(new ColumnWeightData(20, true));

	}

	/**
	 * @see org.eclipse.ui.IWorkbenchPart#setFocus()
	 */
	public void setFocus() {
		if (table != null)
			table.setFocus();
	}
	
	/**
	 * Method getTable.
	 */
	public Table getTable() {
		return table;
	}

}