r/org.eclipse.statet.nico.core/src/org/eclipse/statet/nico/core/runtime/HistoryOperationsHandler.java

/*=============================================================================#
 # Copyright (c) 2008, 2020 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.nico.core.runtime;

import java.util.Map;

import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.osgi.util.NLS;

import org.eclipse.statet.jcommons.status.ErrorStatus;
import org.eclipse.statet.jcommons.status.ProgressMonitor;
import org.eclipse.statet.jcommons.status.Status;
import org.eclipse.statet.jcommons.status.Statuses;
import org.eclipse.statet.jcommons.ts.core.ToolCommandHandler;
import org.eclipse.statet.jcommons.ts.core.ToolService;
import org.eclipse.statet.jcommons.ts.core.util.ToolCommandHandlerUtils;

import org.eclipse.statet.internal.nico.core.Messages;
import org.eclipse.statet.nico.core.NicoCore;


/**
 * {@link #LOAD_HISTORY_ID}
 * {@link #SAVE_HISTORY_ID}
 * {@link #ADDTO_HISTORY_ID}
 */
public class HistoryOperationsHandler implements ToolCommandHandler {
	
	
	public static final String LOAD_HISTORY_ID = "console/loadHistory"; //$NON-NLS-1$
	
	public static final String SAVE_HISTORY_ID = "console/saveHistory"; //$NON-NLS-1$
	
	public static final String ADDTO_HISTORY_ID = "console/addtoHistory"; //$NON-NLS-1$
	
	
	@Override
	public Status execute(final String id, final ToolService service, final Map<String, Object> data,
			final ProgressMonitor m) {
		if (service instanceof ConsoleService) {
			final ConsoleService console = (ConsoleService) service;
			if (id.equals(LOAD_HISTORY_ID)) {
				return loadHistory(console, data, m);
			}
			if (id.equals(SAVE_HISTORY_ID)) {
				return saveHistory(console, data, m);
			}
			if (id.equals(ADDTO_HISTORY_ID)) {
				final String item = ToolCommandHandlerUtils.getCheckedData(data, "text", String.class, true); //$NON-NLS-1$
				console.getTool().getHistory().addCommand(item, console.getController().getCurrentSubmitType());
				return Statuses.OK_STATUS;
			}
		}
		throw new UnsupportedOperationException();
	}
	
	
	protected Status loadHistory(final ConsoleService tools, final Map<String, Object> data,
			final ProgressMonitor m) {
		try {
			CoreException fileException = null;
			IFileStore fileStore = null;
			final String filename = ToolCommandHandlerUtils.getCheckedData(data, "filename", String.class, true); //$NON-NLS-1$
			final ToolWorkspace workspaceData = tools.getWorkspaceData();
			try {
				fileStore = workspaceData.toFileStore(filename);
			}
			catch (final CoreException e) {
				fileException = e;
			}
			final Status status;
			if (fileStore == null) {
				status= new ErrorStatus(NicoCore.BUNDLE_ID, NLS.bind(
								Messages.ToolController_FileOperation_error_CannotResolve_message,
								filename ),
						fileException );
			}
			else {
				status= tools.getTool().getHistory().load(fileStore,
						workspaceData.getEncoding(), false, m );
			}
			tools.handleStatus(status, m);
			return status;
		}
		catch (final OperationCanceledException e) {
			return Statuses.CANCEL_STATUS;
		}
	}
	
	protected Status saveHistory(final ConsoleService tools, final Map<String, Object> data,
			final ProgressMonitor m) {
		try {
			CoreException fileException = null;
			IFileStore fileStore = null;
			final Status status;
			
			final String filename = ToolCommandHandlerUtils.getCheckedData(data, "filename", String.class, true); //$NON-NLS-1$
			final ToolWorkspace workspaceData = tools.getWorkspaceData();
			try {
				fileStore = workspaceData.toFileStore(filename);
			}
			catch (final CoreException e) {
				fileException = e;
			}
			if (fileStore == null) {
				status = new ErrorStatus(NicoCore.BUNDLE_ID, NLS.bind(
								Messages.ToolController_FileOperation_error_CannotResolve_message,
								filename ),
						fileException );
			}
			else {
				status= tools.getTool().getHistory().save(fileStore,
						EFS.NONE, workspaceData.getEncoding(), false, m );
			}
			tools.handleStatus(status, m);
			return status;
		}
		catch (final OperationCanceledException e) {
			return Statuses.CANCEL_STATUS;
		}
	}
	
}