/*******************************************************************************
 * Copyright (c) 2000, 2008 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.search;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.operation.IRunnableContext;
import org.eclipse.search.ui.IQueryListener;
import org.eclipse.search.ui.ISearchQuery;
import org.eclipse.search.ui.ISearchResultViewPart;

/**
 * A facade for access to the new search UI facilities.
 *
 * @since 3.0
 *
 */
public class NewSearchUI {
//	/**
//	 * Activates a search result view in the current workbench window page. If a
//	 * search view is already open in the current workbench window page, it is
//	 * activated. Otherwise a new search view is opened and activated.
//	 *
//	 * @return the activate search result view or <code>null</code> if the
//	 *         search result view couldn't be activated
//	 */
//	public static ISearchResultViewPart activateSearchResultView() {
//		return InternalSearchUI.getInstance().getSearchViewManager().activateSearchView(false);
//	}
//	/**
//	 * Gets the search result view shown in the current workbench window.
//	 *
//	 * @return the search result view or <code>null</code>, if none is open
//	 *         in the current workbench window page
//	 */
//	public static ISearchResultViewPart getSearchResultView() {
//		return InternalSearchUI.getInstance().getSearchViewManager().getActiveSearchView();
//	}
//	/**
//	 * Runs the given search query. This method may run the given query in a
//	 * separate thread if <code>ISearchQuery#canRunInBackground()</code>
//	 * returns <code>true</code>. Running a query adds it to the set of known
//	 * queries and notifies any registered <code>IQueryListener</code>s about
//	 * the addition.
//	 *
//	 * @param query
//	 *            the query to execute
//	 * @deprecated deprecated in 3.1.
//	 * Use {@link #runQueryInBackground(ISearchQuery)} to run a query in background
//	 * or {@link #runQueryInForeground(IRunnableContext, ISearchQuery)} to run it in foreground
//	 */
//	public static void runQuery(ISearchQuery query) {
//		if (query == null) {
//			throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
//		}
//		if (query.canRunInBackground())
//			runQueryInBackground(query);
//		else {
//			IStatus status= runQueryInForeground(null, query);
//			if (status != null) {
//				if (!status.isOK())
//					SearchPlugin.log(status);
//				if (status.getSeverity() == IStatus.ERROR) {
//					ErrorDialog.openError(SearchPlugin.getActiveWorkbenchShell(), SearchMessages.NewSearchUI_error_title, SearchMessages
//							.NewSearchUI_error_label, status);
//				}
//			}
//		}
//	}

    /**
     * Runs the given search query. This method will execute the query in a
     * background thread and not block until the search is finished.
     * Running a query adds it to the set of known queries and notifies
     * any registered {@link IQueryListener}s about the addition.
     * <p>
     * The search view that shows the result will be activated. That means a call
     * to {@link #activateSearchResultView} is not required.
     * </p>
     *
     * @param query
     *            the query to execute. The query must be able to run in background, that means
     *            {@link ISearchQuery#canRunInBackground()} must be <code>true</code>
     * @throws IllegalArgumentException Thrown when the passed query is not able to run in background
     * @since 3.1
     */
    public static void runQueryInBackground(ISearchQuery query) throws IllegalArgumentException {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        runQueryInBackground(query, null);
    }

    /**
     * Runs the given search query. This method will execute the query in a
     * background thread and not block until the search is finished.
     * Running a query adds it to the set of known queries and notifies
     * any registered {@link IQueryListener}s about the addition.
     * <p>
     * The result will be shown in the given search result view which will be activated. A call to
     * to {@link #activateSearchResultView} is not required.
     * </p>
     *
     * @param query
     *            the query to execute. The query must be able to run in background, that means
     *            {@link ISearchQuery#canRunInBackground()} must be <code>true</code>
     * @param view
     *           the search result view to show the result in. If <code>null</code> is passed in, the default activation
     *           mechanism is used to open a new result view or to select the view to be reused.
     * @throws IllegalArgumentException Thrown when the passed query is not able to run in background
     * @since 3.2
     */
    public static void runQueryInBackground(ISearchQuery query, ISearchResultViewPart view) throws IllegalArgumentException {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        if (query.canRunInBackground())
            InternalSearchUI.getInstance().runSearchInBackground(query, view);
        else
            throw new IllegalArgumentException("Query can not be run in background"); //$NON-NLS-1$
    }

    /**
     * Runs the given search query. This method will execute the query in the
     * same thread as the caller. This method blocks until the query is
     * finished. Running a query adds it to the set of known queries and notifies
     * any registered {@link IQueryListener}s about the addition.
     * <p>
     * The result will be shown in a search view that will be activated. That means a call
     * to {@link #activateSearchResultView} is not required.
     * </p>
     *
     * @param context
     *            the runnable context to run the query in
     * @param query
     *            the query to execute
     * @return a status indicating whether the query ran correctly, including {@link IStatus#CANCEL} to signal
     *            that the query was canceled.
     */
    public static IStatus runQueryInForeground(IRunnableContext context, ISearchQuery query) {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        return runQueryInForeground(context, query, null);
    }

    /**
     * Runs the given search query. This method will execute the query in the
     * same thread as the caller. This method blocks until the query is
     * finished. Running a query adds it to the set of known queries and notifies
     * any registered {@link IQueryListener}s about the addition.
     * <p>
     * The result will be shown in the given search result view which will be activated. A call to
     * to {@link #activateSearchResultView} is not required.
     * </p>
     *
     * @param context
     *            the runnable context to run the query in
     * @param query
     *            the query to execute
     * @param view
     *           the search result view to show the result in. If <code>null</code> is passed in, the default activation
     *           mechanism is used to open a new result view or to select the view to be reused.
     * @return a status indicating whether the query ran correctly, including {@link IStatus#CANCEL} to signal
     *            that the query was canceled.
     *
     * @since 3.2
     */
    public static IStatus runQueryInForeground(IRunnableContext context, ISearchQuery query, ISearchResultViewPart view) {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        return InternalSearchUI.getInstance().runSearchInForeground(context, query, view);
    }

    /**
     * Registers the given listener to receive notification of changes to
     * queries. The listener will be notified whenever a query has been added,
     * removed, is starting or has finished. Has no effect if an identical
     * listener is already registered.
     *
     * @param l
     *            the listener to be added
     */
    public static void addQueryListener(IQueryListener l) {
        InternalSearchUI.getInstance().addQueryListener(l);
    }

    /**
     * Removes the given query listener. Does nothing if the listener is not
     * present.
     *
     * @param l
     *            the listener to be removed.
     */
    public static void removeQueryListener(IQueryListener l) {
        InternalSearchUI.getInstance().removeQueryListener(l);
    }

    /**
     * Returns all search queries know to the search UI (i.e. registered via
     * <code>runQuery()</code> or <code>runQueryInForeground())</code>.
     *
     * @return all search results
     */
    public static ISearchQuery[] getQueries() {
        return InternalSearchUI.getInstance().getQueries();
    }

    /**
     * Returns whether the given query is currently running. Queries may be run
     * by client request or by actions in the search UI.
     *
     * @param query
     *            the query
     * @return whether the given query is currently running
     * @see org.eclipse.search.ui.NewSearchUI#runQueryInBackground(ISearchQuery)
     * @see org.eclipse.search.ui.NewSearchUI#runQueryInForeground(IRunnableContext, ISearchQuery)
     */
    public static boolean isQueryRunning(ISearchQuery query) {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        return InternalSearchUI.getInstance().isQueryRunning(query);
    }

    /**
     * Sends a 'cancel' command to the given query running in background.
     * The call has no effect if the query is not running, not in background or is not cancelable.
     *
     * @param query
     *            the query
     * @since 3.1
     */
    public static void cancelQuery(ISearchQuery query) {
        if (query == null) {
            throw new IllegalArgumentException("query must not be null"); //$NON-NLS-1$
        }
        InternalSearchUI.getInstance().cancelSearch(query);
    }

    /**
     * Removes the given search query.
     *
     * @param query the query to be removed
     * @since 3.5
     */
    public static void removeQuery(ISearchQuery query) {
        InternalSearchUI.getInstance().removeQuery(query);
    }

    /**
     * Search Plug-in Id (value <code>"org.eclipse.search"</code>).
     */
    public static final String PLUGIN_ID = "org.eclipse.search"; //$NON-NLS-1$

    /**
     * Search marker type (value <code>"org.eclipse.search.searchmarker"</code>).
     *
     * @see org.eclipse.core.resources.IMarker
     */
    public static final String SEARCH_MARKER = PLUGIN_ID + ".searchmarker"; //$NON-NLS-1$

    /**
     * Id of the new Search view
     * (value <code>"org.eclipse.search.ui.views.SearchView"</code>).
     */
    public static final String SEARCH_VIEW_ID = "org.eclipse.search.ui.views.SearchView"; //$NON-NLS-1$

    /**
     * Id of the Search action set
     * (value <code>"org.eclipse.search.searchActionSet"</code>).
     */
    public static final String ACTION_SET_ID = PLUGIN_ID + ".searchActionSet"; //$NON-NLS-1$

//
//	/**
//	 * Opens the search dialog.
//	 * If <code>pageId</code> is specified and a corresponding page
//	 * is found then it is brought to top.
//	 * @param window 	the parent window
//	 *
//	 * @param pageId	the page to select or <code>null</code>
//	 * 					if the best fitting page should be selected
//	 */
//	public static void openSearchDialog(IWorkbenchWindow window, String pageId) {
//		new OpenSearchDialogAction(window, pageId).run();
//	}
//
//	/**
//	 * Returns the preference whether editors should be reused
//	 * when showing search results.
//	 *
//	 * The goto action can decide to use or ignore this preference.
//	 *
//	 * @return <code>true</code> if editors should be reused for showing search results
//	 */
//	public static boolean reuseEditor() {
//		return SearchPreferencePage.isEditorReused();
//	}

    /**
     * Returns the preference whether a search engine is
     * allowed to report potential matches or not.
     * <p>
     * Search engines which can report inexact matches must
     * respect this preference i.e. they should not report
     * inexact matches if this method returns <code>true</code>
     * </p>
     * @return <code>true</code> if search engine must not report inexact matches
     */
    public static boolean arePotentialMatchesIgnored() {
//		return SearchPreferencePage.arePotentialMatchesIgnored();
        return true;
    }

//	/**
//	 * Returns the ID of the default perspective.
//	 * <p>
//	 * The perspective with this ID will be used to show the Search view.
//	 * If no default perspective is set then the Search view will
//	 * appear in the current perspective.
//	 * </p>
//	 * @return the ID of the default perspective <code>null</code> if no default perspective is set
//	 */
//	public static String getDefaultPerspectiveId() {
//		return SearchPreferencePage.getDefaultPerspectiveId();
//	}

}
