/*******************************************************************************
 * Copyright (c) 2000, 2015 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ant.internal.ui.editor.actions;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.ant.internal.launching.debug.IAntDebugConstants;
import org.eclipse.ant.internal.launching.debug.model.AntDebugElement;
import org.eclipse.ant.internal.launching.debug.model.AntLineBreakpoint;
import org.eclipse.ant.internal.ui.AntUIPlugin;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.model.IBreakpoint;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.ISuspendResume;
import org.eclipse.debug.ui.actions.IRunToLineTarget;
import org.eclipse.debug.ui.actions.RunToLineHandler;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;

/**
 * Run to line target for the Ant debugger
 */
public class RunToLineAdapter implements IRunToLineTarget {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IRunToLineTarget#runToLine(org.eclipse.ui.IWorkbenchPart, org.eclipse.jface.viewers.ISelection,
	 * org.eclipse.debug.core.model.ISuspendResume)
	 */
	@Override
	public void runToLine(IWorkbenchPart part, ISelection selection, ISuspendResume target) throws CoreException {
		IEditorPart editorPart = (IEditorPart) part;
		IEditorInput input = editorPart.getEditorInput();
		String errorMessage = null;
		if (input == null) {
			errorMessage = AntEditorActionMessages.getString("RunToLineAdapter.0"); //$NON-NLS-1$
		} else {
			ITextEditor textEditor = (ITextEditor) editorPart;
			IDocumentProvider provider = textEditor.getDocumentProvider();
			IDocument document = provider.getDocument(input);

			if (document == null) {
				errorMessage = AntEditorActionMessages.getString("RunToLineAdapter.1"); //$NON-NLS-1$
			} else {

				ITextSelection textSelection = (ITextSelection) selection;
				int lineNumber = textSelection.getStartLine() + 1;

				IBreakpoint breakpoint = null;
				Map<String, Object> attributes = getRunToLineAttributes();
				IFile file = input.getAdapter(IFile.class);
				if (file == null) {
					errorMessage = AntEditorActionMessages.getString("RunToLineAdapter.2"); //$NON-NLS-1$
				} else {
					breakpoint = new AntLineBreakpoint(file, lineNumber, attributes, false);
					breakpoint.setPersisted(false);
					errorMessage = AntEditorActionMessages.getString("RunToLineAdapter.3"); //$NON-NLS-1$
					if (target instanceof IAdaptable) {
						IDebugTarget debugTarget = ((IAdaptable) target).getAdapter(IDebugTarget.class);
						if (debugTarget != null) {
							RunToLineHandler handler = new RunToLineHandler(debugTarget, target, breakpoint);
							handler.run(new NullProgressMonitor());
							return;
						}
					}
				}
			}
		}
		throw new CoreException(new Status(IStatus.ERROR, AntUIPlugin.getUniqueIdentifier(), AntUIPlugin.INTERNAL_ERROR, errorMessage, null));
	}

	private Map<String, Object> getRunToLineAttributes() {
		Map<String, Object> attributes = new HashMap<>();
		attributes.put(IMarker.TRANSIENT, Boolean.TRUE);
		attributes.put(IAntDebugConstants.ANT_RUN_TO_LINE, Boolean.TRUE);
		return attributes;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.debug.ui.actions.IRunToLineTarget#canRunToLine(org.eclipse.ui.IWorkbenchPart, org.eclipse.jface.viewers.ISelection,
	 * org.eclipse.debug.core.model.ISuspendResume)
	 */
	@Override
	public boolean canRunToLine(IWorkbenchPart part, ISelection selection, ISuspendResume target) {
		return target instanceof AntDebugElement;
	}
}