/*

 * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:

 *

 * Exports Trigger configuration to XML file

 *

 */

package com.nokia.traceviewer.engine.preferences;

import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Attr;

import org.w3c.dom.Document;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import com.nokia.traceviewer.dialog.treeitem.TreeItem;

import com.nokia.traceviewer.dialog.treeitem.TriggerTreeItem;

import com.nokia.traceviewer.dialog.treeitem.TriggerTreeTextItem;

import com.nokia.traceviewer.engine.TraceViewerGlobals;

/**

 * Exports Trigger configuration to XML file

 * 

 */

public class XMLTriggerConfigurationExporter extends

		XMLBaseConfigurationExporter {

	/**

	 * Constructor

	 * 

	 * @param root

	 *            root of the Trigger elements

	 * @param configurationFileName

	 *            file name where to export data

	 * @param pathRelative

	 *            tells is the path relative

	 */

	public XMLTriggerConfigurationExporter(TreeItem root,

			String configurationFileName, boolean pathRelative) {

		super(root, configurationFileName, pathRelative);

	}

	/**

	 * Exports data

	 */

	public void export() {

		Document doc = getDocument();

		Node parent;

		// Get root node of line count rules

		NodeList list = doc.getElementsByTagName(TRIGGER_TAG);

		// Tag not found

		if (list.getLength() == 0) {

			parent = doc.createElement(TRIGGER_TAG);

			// Get the main configurations tag

			NodeList list2 = doc.getElementsByTagName(CONFIGURATIONS_TAG);

			Node mainRoot = list2.item(0);

			mainRoot.appendChild(parent);

		} else {

			parent = list.item(0);

		}

		// Delete old rule information

		NodeList children = parent.getChildNodes();

		int len = children.getLength();

		for (int i = 0; i < len; i++) {

			parent.removeChild(children.item(0));

		}

		// Process through the tree

		for (int i = 0; i < root.getChildren().length; i++) {

			processChild((TriggerTreeItem) root.getChildren()[i], doc, parent);

		}

		// Get result from document

		StreamResult result = getResultFromDocument(doc);

		// Print out

		String xmlString = result.getWriter().toString();

		writeFile(xmlString);

	}

	/**

	 * Process child

	 * 

	 * @param item

	 *            child to process

	 * @param doc

	 *            document

	 * @param root

	 *            node to insert this child to

	 */

	private void processChild(TriggerTreeItem item, Document doc, Node root) {

		// Process through the tree

		Node newItem = null;

		if (item.getRule() == TriggerTreeItem.Rule.GROUP) {

			newItem = doc.createElement(GROUP_TAG);

		} else if (item.getRule() == TriggerTreeItem.Rule.TEXT_RULE) {

			newItem = doc.createElement(CONFIGURATION_TAG);

		}

		if (newItem != null) {

			// Get attributes

			NamedNodeMap itemAttributes = newItem.getAttributes();

			// Set name

			Attr name = doc.createAttribute(NAME_TAG);

			name.setValue(item.getName());

			itemAttributes.setNamedItem(name);

			// Set rule if not group item

			if (item.getRule() != TriggerTreeItem.Rule.GROUP) {

				Attr rule = doc.createAttribute(RULE_TAG);

				if (item.getRule() == TriggerTreeItem.Rule.TEXT_RULE) {

					rule.setValue(TEXTRULE_TAG);

				} else {

					String unknownText = Messages

							.getString("XMLTriggerConfigurationExporter.UnknownText"); //$NON-NLS-1$

					rule.setValue(unknownText);

				}

				itemAttributes.setNamedItem(rule);

				// Add enabled attribute for activation triggers

				if (item.getType() == TriggerTreeItem.Type.ACTIVATIONTRIGGER) {

					Attr enabled = doc.createAttribute(ENABLED_TAG);

					boolean checked = isChecked(item);

					if (checked) {

						enabled.setValue(YES_TAG);

					} else {

						enabled.setValue(NO_TAG);

					}

					itemAttributes.setNamedItem(enabled);

				}

			}

			// Set as child to parent

			root.appendChild(newItem);

			// Set nodes when text rule

			if (item.getRule() == TriggerTreeItem.Rule.TEXT_RULE) {

				TriggerTreeTextItem textItem = (TriggerTreeTextItem) item;

				// Text

				Node text = doc.createElement(TEXT_TAG);

				text.setTextContent(textItem.getText());

				newItem.appendChild(text);

				// Match case

				Node matchCase = doc.createElement(MATCHCASE_TAG);

				if (textItem.isMatchCase()) {

					matchCase.setTextContent(YES_TAG);

				} else {

					matchCase.setTextContent(NO_TAG);

				}

				newItem.appendChild(matchCase);

				// TriggerType

				Node triggerType = doc.createElement(TRIGGERTYPE_TAG);

				if (textItem.getType() == TriggerTreeItem.Type.STARTTRIGGER) {

					triggerType.setTextContent(STARTTRIGGER_TAG);

				} else if (textItem.getType() == TriggerTreeItem.Type.STARTTRIGGER) {

					triggerType.setTextContent(STOPTRIGGER_TAG);

				} else if (textItem.getType() == TriggerTreeItem.Type.ACTIVATIONTRIGGER) {

					triggerType.setTextContent(ACTIVATIONTRIGGER_TAG);

				}

				newItem.appendChild(triggerType);

				// Specific cases for Activation trigger

				if (textItem.getType() == TriggerTreeItem.Type.ACTIVATIONTRIGGER) {

					// Configuration file path

					Node configurationFile = doc

							.createElement(CONFIGURATION_FILE_TAG);

					configurationFile.setTextContent(textItem

							.getConfigurationFilePath());

					newItem.appendChild(configurationFile);

					// Configuration name

					Node configurationName = doc

							.createElement(CONFIGURATION_NAME_TAG);

					configurationName.setTextContent(textItem

							.getConfigurationName());

					newItem.appendChild(configurationName);

				}

			}

			// Loop through own children

			for (int i = 0; i < item.getChildren().length; i++) {

				processChild((TriggerTreeItem) item.getChildren()[i], doc,

						newItem);

			}

		}

	}

	/**

	 * Checks it the given item is checked in the dialog

	 * 

	 * @param item

	 *            item to be checked

	 * @return true if the given item is checked

	 */

	private boolean isChecked(TriggerTreeItem item) {

		boolean checked = false;

		if (TraceViewerGlobals.getTraceViewer().getDataProcessorAccess()

				.getTriggerProcessor().getActivationTriggers().contains(item)) {

			checked = true;

		}

		return checked;

	}

}