/*

* Copyright (c) 2007 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:

*

*/ 

package com.nokia.s60tools.apiquery.ui.views.main.search;

import java.util.ArrayList;

import java.util.Collection;

import java.util.HashMap;

import java.util.Map;

import org.eclipse.jface.viewers.IStructuredContentProvider;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.browser.Browser;

import org.eclipse.swt.browser.LocationEvent;

import org.eclipse.swt.browser.LocationListener;

import org.eclipse.swt.custom.BusyIndicator;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Event;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Layout;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableColumn;

import org.eclipse.swt.widgets.TableItem;

import org.eclipse.ui.PlatformUI;

import com.nokia.s60tools.apiquery.APIQueryHelpContextIDs;

import com.nokia.s60tools.apiquery.settings.UserSettings;

import com.nokia.s60tools.apiquery.shared.datatypes.APIDetailField;

import com.nokia.s60tools.apiquery.shared.datatypes.APIDetails;

import com.nokia.s60tools.apiquery.shared.datatypes.APIQueryParameters;

import com.nokia.s60tools.apiquery.shared.datatypes.APIShortDescription;

import com.nokia.s60tools.apiquery.shared.datatypes.QueryErrorInfo;

import com.nokia.s60tools.apiquery.shared.exceptions.QueryOperationFailedException;

import com.nokia.s60tools.apiquery.shared.plugin.APIQueryPlugin;

import com.nokia.s60tools.apiquery.shared.preferences.APIQueryPreferences;

import com.nokia.s60tools.apiquery.shared.resources.Messages;

import com.nokia.s60tools.apiquery.shared.searchmethod.ISearchMethodExtension;

import com.nokia.s60tools.apiquery.shared.searchmethod.ui.AbstractUiFractionComposite;

import com.nokia.s60tools.apiquery.shared.ui.dialogs.APIQueryMessageBox;

import com.nokia.s60tools.apiquery.shared.util.console.APIQueryConsole;

import com.nokia.s60tools.util.debug.DbgUtility;

/**

 * UI composite containing controls that show the query results.

 */

class QueryResultsComposite extends AbstractUiFractionComposite {

	/**

	 * Amount of columns in the used grid layout.

	 */

	private final int COLUMN_COUNT = 1;

	/**

	 * Search results label text to be shown for user.

	 */

	private static final String SEARCH_RESULTS_LABEL_TEXT = Messages

			.getString("QueryResultsComposite.SearchResults_Msg"); //$NON-NLS-1$

	private static final String SEARCH_RESULTS_LABEL_API_TEXT = Messages

			.getString("QueryResultsComposite.APIs_Msg"); //$NON-NLS-1$

	/**

	 * Preferred size for the search result list control. Targeted currently to

	 * show 10 items without need for scrolling.

	 */

	private final int SEARCH_RESULT_FIELD_HEIGHT = 150;

	private TableViewer tableViewer;

	private APIDataTaskList taskList = null;

	// private APIShortDescription shortDescription = null;

	//

	// Setting static data section for HTML data shown in the browser component

	//

	private final String HTML_DATA_BODY_STYLE = "body {margin-left: 0px;margin-right: 0px;margin-top: 0px;margin-bottom: 0px;}"; //$NON-NLS-1$

	private final String HTML_DATA_TABLE_STYLE = "table{border-collapse: collapse; font-family: Tahoma; font-size: 11px}"; //$NON-NLS-1$

	private final String HTML_DATA_STYLE = "<style>" + HTML_DATA_BODY_STYLE + HTML_DATA_TABLE_STYLE + "</style>"; //$NON-NLS-1$ //$NON-NLS-2$

	private final String HTML_DATA_HEAD = "<head>" + HTML_DATA_STYLE + "</head>"; //$NON-NLS-1$ //$NON-NLS-2$

	private final String HTML_DATA_HEADER = "<html>" + HTML_DATA_HEAD + "<body>"; //$NON-NLS-1$ //$NON-NLS-2$

	private final String HTML_DATA_FOOTER = "</body></html>"; //$NON-NLS-1$

	private final String HTML_DATA_TABLE_START = "<table border=1 width=\"100%\" ><colgroup span=\"2\"><col width=\"30%\"></col><col width=\"70%\"></col></colgroup>"; //$NON-NLS-1$

	private final String HTML_DATA_TABLE_END = "</table>"; //$NON-NLS-1$

	private final String EMPTY_HTML_DOC = HTML_DATA_HEADER + HTML_DATA_FOOTER;

	private static final String COMMA = ",";//$NON-NLS-1$

	// boolean sourceNeeded = false;

	// boolean onlyAPIInfo = false;

	// int columns = 0;

	int apiIndex = -1;

	int otherFiledIndex = -1;

	int sourceIndex = -1;

	/**

	 * Listener for changing how the results is shown

	 */

	private IResultSettingsListener resultSettingsListener;

	/**

	 * List item for showing list of APIs

	 */

	// private List searchResultList;

	/**

	 * Button to change how results are shown

	 */

	private Button showOnlyAPINamesBtn;

	/**

	 * Map that stores indexes for searchResults data by searchResultList name

	 * (matches UI text to {@link APIShortDescription} id).

	 */

	private Map<String, Integer> searchResultIndexes;

	/**

	 * Label item to be updated with API count.

	 */

	Label searchResultsLabel;

	/**

	 * Summary data to be shown in the API list.

	 */

	private APIShortDescription[] searchResultData;

	/**

	 * Details data to be shown in browser control.

	 */

	private APIDetails details;

	static int TABLE_STYLE_BITS = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL

			| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.RESIZE;

	/**

	 * Browser control for showing API details data.

	 */

	private Browser browserControl;

	private APIQueryParameters params;

	private Table table;

	String[] src = { "API NAME", "SUBSYSTEM NAME", " DLL NAME", "LIB NAME",

			"HEADER NAME", "CRPS KEY NAME", " ", "SOURCE" };

	/**

	 * Constructor.

	 * 

	 * @param parentComposite

	 *            Parent composite for the created composite.

	 */

	public QueryResultsComposite(Composite parentComposite) {

		super(parentComposite);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.s60tools.apiquery.ui.views.main.AbstractTabComposite#createLayout()

	 */

	protected Layout createLayout() {

		return new GridLayout(COLUMN_COUNT, false);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.s60tools.apiquery.ui.views.main.AbstractTabComposite#createLayoutData()

	 */

	protected Object createLayoutData() {

		return new GridData(GridData.FILL_BOTH);

	}

	/**

	 * Set context sensitive help ids to components that can have focus

	 * 

	 */

	private void setContextSensitiveHelpIds() {

		PlatformUI.getWorkbench().getHelpSystem().setHelp(showOnlyAPINamesBtn,

				APIQueryHelpContextIDs.API_QUERY_HELP_SEARCH_TAB);

	}

	private void createTableViewer() {

		tableViewer = new TableViewer(table);

		tableViewer.setUseHashlookup(true);

	}

	private void createTable(Composite parent, int numberOfColumns,

			String[] columnNames) {

		table = new Table(parent, TABLE_STYLE_BITS);

		GridData gridData = new GridData(GridData.FILL_HORIZONTAL);

		gridData.heightHint = SEARCH_RESULT_FIELD_HEIGHT;

		table.setLayoutData(gridData);

		table.setLinesVisible(true);

		table.setHeaderVisible(true);

		table.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent arg0) {

			}

			public void widgetSelected(SelectionEvent arg0) {

				getAPIDetailsData();

			}

		});

		int size = 150;

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

			TableColumn column = new TableColumn(table, SWT.LEFT, i);

			column.setText(columnNames[i]);

			column.setWidth(size);

			size = size - 50;

			final int j = i;

			column.addListener(SWT.Selection, new Listener() {

				public void handleEvent(Event event) {

					TableColumn sortedColumn = table.getSortColumn();

					TableColumn currentSelected = (TableColumn)event.widget;

					int dir = table.getSortDirection();

					if(sortedColumn == currentSelected){

						dir = dir == SWT.UP ? SWT.DOWN : SWT.UP;

					}

					else{

						table.setSortColumn(currentSelected);

						dir = SWT.UP;

					}

					if(currentSelected == table.getColumn(j))

					{

						tableViewer.setSorter(new DataSorter(dir, j));

					}

					table.setSortDirection(dir);

				}

			});

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.s60tools.apiquery.ui.views.main.AbstractTabComposite#createControls()

	 */

	protected void createControls() {

		DbgUtility.println(DbgUtility.PRIORITY_OPERATION,

				"-- createControls() --> " + getClass().getName()); //$NON-NLS-1$

		//

		// Creating label and list for showing APIs found based on the query.

		//

		searchResultsLabel = new Label(this, SWT.HORIZONTAL | SWT.LEFT);

		searchResultsLabel.setText(SEARCH_RESULTS_LABEL_TEXT + ":"); //$NON-NLS-1$

		// final int listBoxStyleBits = SWT.SINGLE | SWT.BORDER | SWT.V_SCROLL;

		// searchResultList = new List(this, listBoxStyleBits);

		createTable(this, 3, new String[] { " ", " ", " " });

		createTableViewer();

		searchResultIndexes = new HashMap<String, Integer>();

		GridData listData1 = new GridData(GridData.FILL_HORIZONTAL);

		listData1.heightHint = SEARCH_RESULT_FIELD_HEIGHT;

		//

		// Creating button to change how the results are shown

		//

		String desc = Messages

				.getString("QueryResultsComposite.ShowOnlyAPINames_MSg"); //$NON-NLS-1$ "Show only API names";

		showOnlyAPINamesBtn = new Button(this, SWT.CHECK);

		showOnlyAPINamesBtn.setText(desc);

		showOnlyAPINamesBtn.setSelection(APIQueryPreferences

				.getShowOnlyAPINames());

		showOnlyAPINamesBtn

				.addSelectionListener(new ShowOnlyAPINamesSelectionListener());

		//

		// Creating label and browser control for showing API details for the

		// selected API.

		//

		Label apiDetailsLabel = new Label(this, SWT.HORIZONTAL | SWT.LEFT);

		apiDetailsLabel.setText(Messages

				.getString("QueryResultsComposite.APIDetails_MSg")); //$NON-NLS-1$

		// Browser control does not seem to support SWT.BORDER style bit.

		// Therefore need to add separate border component.

		Composite browserBorder = new Composite(this, SWT.BORDER);

		FillLayout borderLayout = new FillLayout(SWT.VERTICAL | SWT.HORIZONTAL);

		browserBorder.setLayout(borderLayout);

		browserBorder.setLayoutData(new GridData(GridData.FILL_BOTH));

		// Adding browser control

		browserControl = new Browser(browserBorder, SWT.NONE);

		browserControl.addLocationListener(new LocationListener() {

			public void changed(LocationEvent arg0) {

			}

			public void changing(LocationEvent arg0) {

				// //get the setting

				final ISearchMethodExtension serachMethod = UserSettings

						.getInstance().getCurrentlySelectedSearchMethod();

				if (!arg0.location.contains("about:blank")) {

					arg0.doit = false;

					final String headerName = arg0.location.substring(2,

							arg0.location.length()).trim();

					String apidetailsName = "Name";

					if (serachMethod.isAsyncQueryPreferred())

						apidetailsName = "API Name";

					APIDetailField det = details.getDetail(apidetailsName);

					serachMethod.openHeaderFile(headerName, det.getValue()

							.trim());

				}

			}

		});

		setContextSensitiveHelpIds();

	}

	/**

	 * Class that listens button state changes and updates preferences and

	 * results composite

	 */

	private class ShowOnlyAPINamesSelectionListener implements

			SelectionListener {

		public void widgetDefaultSelected(SelectionEvent e) {

		}

		public void widgetSelected(SelectionEvent e) {

			// Setting selection preferences

			// APIQueryPreferences.setShowOnlyAPINames(showOnlyAPINamesBtn.getSelection());

			// Update view, do not get information again from data source, but

			// just update data

			resultSettingsListener.resultSettingsChanged();

		}

	}

	/**

	 * Converts API details into html-data.

	 * 

	 * @param details

	 *            API details object to be converted.

	 * @return

	 */

	private String buildHtmlDataFromDetails(APIDetails details) {

		StringBuffer htmlTextBuf = new StringBuffer();

		htmlTextBuf.append(HTML_DATA_HEADER);

		// Appending table start

		htmlTextBuf.append(HTML_DATA_TABLE_START);

		// Converting API details into html data

		for (APIDetailField detailField : details) {

			// System.out.println("datailValue" + detailField.getValue() + "

			// getdesc" + detailField.getDescription());

			convertSingleDetailField(detailField, htmlTextBuf);

		}

		// Appending table end

		htmlTextBuf.append(HTML_DATA_TABLE_END);

		htmlTextBuf.append(HTML_DATA_FOOTER);

		return htmlTextBuf.toString();

	}

	/**

	 * @param field

	 * @param htmlTextBuf

	 */

	private void convertSingleDetailField(APIDetailField field,

			StringBuffer htmlTextBuf) {

		String desc = field.getDescription();

		String val = field.getValue();

		// System.out.println("values" +val);

		htmlTextBuf.append("<tr><td><b>"); //$NON-NLS-1$

		htmlTextBuf.append(desc);

		htmlTextBuf.append(":</b></td><td>"); //$NON-NLS-1$

		boolean isSelectedSearchType = getIsSelectedSearchType(desc);

		// String what user was set to be searched

		String[] serachStrings = params.getSearchString().split(";");

		String searchString = params.getSearchString();

		// Checking if empty string was searched (empty search lists all)

		boolean isEmptySearchString = false;

		if (searchString == null || searchString.trim().equals("")) {//$NON-NLS-1$

			isEmptySearchString = true;

		}

		boolean isValueContainingSearchString = false;

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

			String temp = serachStrings[i].trim();

			isValueContainingSearchString = isValueContainingSearchString(val,

					temp);

			if (isValueContainingSearchString) {

				searchString = temp;

				break;

			}

		}

		// get the setting

		ISearchMethodExtension serachMethod = UserSettings.getInstance()

				.getCurrentlySelectedSearchMethod();

		// Checking search criteria and set matching search string as red when

		// found

		if (!isEmptySearchString && isSelectedSearchType

				&& isValueContainingSearchString) {

			String[] vals = val.split(COMMA);

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

				if (vals[i].toLowerCase().indexOf(searchString.toLowerCase()) != -1) {

					String s = "<font color=\"red\">" + vals[i] + "</font>";

					if (params.getQueryType() == APIQueryParameters.QUERY_BY_HEADER_NAME

							&& serachMethod.serachHeaderLinkEnable())

						s = "<a href=\"file://" + vals[i] + "\">" + s + "</a>";

					//System.out.println("link" + s);

					htmlTextBuf.append(s);//$NON-NLS-1$ //$NON-NLS-2$

				} else {

					htmlTextBuf.append(vals[i]);

				}

				if (i < (vals.length - 1)) {

					htmlTextBuf.append(COMMA);

				}

			}

		} else {

			htmlTextBuf.append(val);

		}

		htmlTextBuf.append("</td></tr>"); //$NON-NLS-1$

	}

	/**

	 * Check if value contains search string (case in sensitive)

	 * 

	 * @param val

	 * @param searchString

	 * @return <code>true</code> if val contains searchString, false

	 *         othrewise.

	 */

	private boolean isValueContainingSearchString(String val,

			String searchString) {

		return val != null

				&& val.toLowerCase().contains(searchString.toLowerCase());

	}

	/**

	 * Check if given string is same as selected search type

	 * 

	 * @param desc

	 * @return <code>true</code> if is, <code>false</code> otherwise.

	 */

	private boolean getIsSelectedSearchType(String desc) {

		// UI name in API Details for selected search type

		String searchTypeInReport = UserSettings.getInstance()

				.getCurrentlySelectedSearchMethod()

				.getAPIDetailNameInDetailsByQueryType(params.getQueryType());

		// Check if this value is same type as users search criteria

		boolean isSelectedSearchType = searchTypeInReport

				.equalsIgnoreCase(desc);

		return isSelectedSearchType;

	}

	/**

	 * Updates summary field with the queried data. If only one result was

	 * found, API Details for that API is shown.

	 * 

	 * @param summaryDataColl

	 *            API summary data to be shown.

	 */

	public void updateAPIShortDescriptionData(