ROMSetupLabelProvider.java

/*
  ROMSetupLabelProvider.java

  (c) 2013 Ed Swartz

  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
 */
package v9t9.gui.client.swt.shells;

import java.io.File;
import java.net.URI;
import java.util.LinkedHashSet;
import java.util.Set;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.ITableColorProvider;
import org.eclipse.jface.viewers.ITableFontProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

import v9t9.common.machine.IMachine;
import v9t9.common.memory.MemoryEntryInfo;
import v9t9.common.modules.IModule;
import ejs.base.utils.TextUtils;

/**
 * @author ejs
 *
 */
public class ROMSetupLabelProvider extends LabelProvider implements
		ITableLabelProvider, ITableFontProvider, ITableColorProvider {

	private ROMSetupTreeContentProvider contentProvider;
	private IMachine machine;
	
	/**
	 * @param contentProvider
	 */
	public ROMSetupLabelProvider(IMachine machine, ROMSetupTreeContentProvider contentProvider) {
		this.machine = machine;
		this.contentProvider = contentProvider;
	}

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

	protected String uriToFile(URI uri) {
		if (uri != null) {
			try {
				return new File(uri).getName();
			} catch (IllegalArgumentException e) {
				String path = uri.toString();
				int idx = path.lastIndexOf('/');
				return path.substring(idx+1);
			}
		} else {
			return "(not found)";
		}
	}
	protected String uriToDir(URI uri) {
		if (uri != null) {
			try {
				return new File(uri).getParent();
			} catch (IllegalArgumentException e) {
				String path = uri.toString();
				int idx = path.lastIndexOf('/');
				return idx >= 0 ? path.substring(0, idx) : path;
			}
		} else {
			return "(not found)";
		}
	}
	protected String uriToPath(URI uri) {
		if (uri != null) {
			try {
				return new File(uri).getAbsolutePath();
			} catch (IllegalArgumentException e) {
				return uri.toString();
			}
		} else {
			return "(not found)";
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int)
	 */
	@Override
	public String getColumnText(Object element, int columnIndex) {
		if (columnIndex == 0) {
			if (element instanceof String) {
				return (String) element;
			}
			if (element instanceof IModule) {
				IModule mod = (IModule) element;
				return mod.getName();
			}
			if (element instanceof MemoryEntryInfo) {
				MemoryEntryInfo info = (MemoryEntryInfo) element;
				return info.getName();
			}
		}
		else if (columnIndex == 1) {
			if (element instanceof IModule) {
				IModule module = (IModule) element;
				File[] files = contentProvider.getPathsFor(module);
				if (files == null)
					return "(not found)";
				StringBuilder sb = new StringBuilder();
				for (File file : files) {
					if (sb.length() > 0)
						sb.append(", ");
					sb.append(file.getName());
				}
				return sb.toString();
			}
			if (element instanceof MemoryEntryInfo) {
				MemoryEntryInfo info = (MemoryEntryInfo) element;
				URI uri = contentProvider.getPathFor(info);
				if (uri != null)
					return uriToFile(uri);
				else
					return info.getResolvedFilename(machine.getSettings());
			}
		}
		else if (columnIndex == 2) {
			if (element instanceof IModule) {
				IModule module = (IModule) element;
				File[] files = contentProvider.getPathsFor(module);
				
				if (files == null)
					return "(not found)";
				
				Set<String> dirs = new LinkedHashSet<String>(); 
				for (File file : files) {
					dirs.add(file.getParent());
				}
				return TextUtils.catenateStrings(dirs, ", ");
			}
			if (element instanceof MemoryEntryInfo) {
				MemoryEntryInfo info = (MemoryEntryInfo) element;
				URI uri = contentProvider.getPathFor(info);
				return uriToDir(uri);
			}
		}
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITableColorProvider#getForeground(java.lang.Object, int)
	 */
	@Override
	public Color getForeground(Object element, int columnIndex) {
		if (element instanceof MemoryEntryInfo) {
			MemoryEntryInfo info = (MemoryEntryInfo) element;
			if (contentProvider.getPathFor(info) == null) {
				if (contentProvider.isRequired(info)) {
					return Display.getDefault().getSystemColor(SWT.COLOR_RED);
				}
			} else if (columnIndex == 0) {
				return Display.getDefault().getSystemColor(SWT.COLOR_BLUE);
				
			}
		}
		else if (element instanceof IModule) {
			if (columnIndex == 0) {
				return Display.getDefault().getSystemColor(SWT.COLOR_BLUE);
			}
		}
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITableColorProvider#getBackground(java.lang.Object, int)
	 */
	@Override
	public Color getBackground(Object element, int columnIndex) {
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ITableFontProvider#getFont(java.lang.Object, int)
	 */
	@Override
	public Font getFont(Object element, int columnIndex) {
		if (element instanceof MemoryEntryInfo
				&& contentProvider.getPathFor((MemoryEntryInfo) element) == null) {
			return JFaceResources.getFontRegistry().getItalic(JFaceResources.DIALOG_FONT);
		}
		if (element instanceof String) {
			return JFaceResources.getBannerFont();
		}
		return null;
	}

}