/*******************************************************************************
 * Copyright (c) 2007, 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:
 *    Norimasa HAYASHIDA - initial API and implementation
 *******************************************************************************/
package org.eclipse.actf.model.internal.ui.editors.ooo.util;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

import org.eclipse.actf.model.dom.odf.ODFConstants.ContentType;
import org.eclipse.actf.model.dom.odf.office.DocumentContentElement;
import org.eclipse.actf.model.ui.editors.ooo.initializer.util.OOoEditorInitUtil;
import org.eclipse.actf.util.win32.WindowUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import com.sun.star.beans.UnknownPropertyException;
import com.sun.star.beans.XPropertySet;
import com.sun.star.comp.helper.Bootstrap;
import com.sun.star.container.NoSuchElementException;
import com.sun.star.container.XEnumeration;
import com.sun.star.container.XEnumerationAccess;
import com.sun.star.drawing.XDrawPage;
import com.sun.star.drawing.XDrawPages;
import com.sun.star.drawing.XDrawPagesSupplier;
import com.sun.star.frame.XDesktop;
import com.sun.star.frame.XDispatchHelper;
import com.sun.star.frame.XFrame;
import com.sun.star.frame.XLayoutManager;
import com.sun.star.frame.XModel;
import com.sun.star.lang.IndexOutOfBoundsException;
import com.sun.star.lang.WrappedTargetException;
import com.sun.star.lang.XComponent;
import com.sun.star.lang.XMultiComponentFactory;
import com.sun.star.uno.Exception;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XComponentContext;

@SuppressWarnings("nls")
public class ODFUtils {
	public static int getDrawPageCount(XComponent xComp) {
		XDrawPagesSupplier xDrawPagesSupplier = (XDrawPagesSupplier) UnoRuntime
				.queryInterface(XDrawPagesSupplier.class, xComp);
		XDrawPages xDrawPages = xDrawPagesSupplier.getDrawPages();

		return xDrawPages.getCount();
	}

	public static XDrawPage getDrawPageByIndex(XComponent xComp, int index)
			throws ODFException {

		try {
			XDrawPagesSupplier xDrawPagesSupplier = (XDrawPagesSupplier) UnoRuntime
					.queryInterface(XDrawPagesSupplier.class, xComp);
			XDrawPages xDrawPages = xDrawPagesSupplier.getDrawPages();

			return (XDrawPage) UnoRuntime.queryInterface(XDrawPage.class,
					xDrawPages.getByIndex(index));

		} catch (IndexOutOfBoundsException ioobe) {
			ioobe.printStackTrace();
			throw new ODFException(ioobe.getMessage());
		} catch (WrappedTargetException wte) {
			wte.printStackTrace();
			throw new ODFException(wte.getMessage());
		}
	}

	public static ContentType getODFFileType(Document odfContent) {
		if (odfContent != null) {
			Element content = odfContent.getDocumentElement();
			if (content instanceof DocumentContentElement) {
				return ((DocumentContentElement) content).getBodyElement()
						.getContent().getContentType();
			}
		}
		return ContentType.NONE;
	}

	public static XFrame getXFrame(XComponentContext xCompContext)
			throws ODFException {
		XComponent xComp = getXComponent(xCompContext);
		XModel model = (XModel) UnoRuntime.queryInterface(XModel.class, xComp);
		return model.getCurrentController().getFrame();
	}

	public static XDispatchHelper getXDispatchHelper(
			XComponentContext xCompContext) throws ODFException {

		XDispatchHelper xDispatchHelper = null;

		XMultiComponentFactory xMCF = xCompContext.getServiceManager();

		try {
			Object oDispatchHelper = xMCF.createInstanceWithContext(
					"com.sun.star.frame.DispatchHelper", xCompContext);
			xDispatchHelper = (XDispatchHelper) UnoRuntime.queryInterface(
					XDispatchHelper.class, oDispatchHelper);
		} catch (Exception e) {
			throw new ODFException(e.getMessage());
		}

		return xDispatchHelper;
	}

	public static XLayoutManager getXLayoutManager(XFrame xFrame)
			throws ODFException {

		XLayoutManager xLayoutManager = null;

		XPropertySet framePropSet = (XPropertySet) UnoRuntime.queryInterface(
				XPropertySet.class, xFrame);
		try {
			xLayoutManager = (XLayoutManager) UnoRuntime.queryInterface(
					XLayoutManager.class, framePropSet
							.getPropertyValue("LayoutManager"));
		} catch (UnknownPropertyException upe) {
			throw new ODFException(upe.getMessage());
		} catch (WrappedTargetException wte) {
			throw new ODFException(wte.getMessage());
		}

		return xLayoutManager;
	}

	public static XComponent getXComponent(XComponentContext xComponentContext)
			throws ODFException {
		XDesktop xDesktop = BootstrapForOOoComposite.getXDesktop();
		XEnumerationAccess xEnumerationAccess = xDesktop.getComponents();
		XEnumeration xEnumeration = xEnumerationAccess.createEnumeration();
		while (xEnumeration.hasMoreElements()) {
			Object oComp = null;
			try {
				oComp = xEnumeration.nextElement();
			} catch (NoSuchElementException nsee) {
				throw new ODFException(nsee.getMessage());
			} catch (WrappedTargetException wte) {
				throw new ODFException(wte.getMessage());
			}

			if (null != oComp) {
				return (XComponent) UnoRuntime.queryInterface(XComponent.class,
						oComp);
			}
		}

		return null;
	}

	public static XDesktop getXDesktop(XComponentContext xComponentContext)
			throws ODFException {
		XDesktop xDesktop = null;
		try {
			XMultiComponentFactory xMCF = xComponentContext.getServiceManager();
			Object oDesktop = xMCF.createInstanceWithContext(
					"com.sun.star.frame.Desktop", xComponentContext);
			xDesktop = (XDesktop) UnoRuntime.queryInterface(XDesktop.class,
					oDesktop);
		} catch (Exception e) {
			throw new ODFException(e.getMessage());
		}

		return xDesktop;
	}

	@SuppressWarnings("unused")
	public static ClassLoader loadOpenOfficeLibs() throws ODFException {
		String openOfficeProgramPath = OOoEditorInitUtil.getOpenOfficePath()
				+ "\\";

		File msvcr71 = new File(openOfficeProgramPath + "msvcr71.dll");
		if (msvcr71.exists()) {
			System.load(msvcr71.getPath());
		}

		if (System.getProperty("java.vm.vendor").equals("IBM Corporation")) {
			String javaHome = System
					.getProperty("com.ibm.oti.vm.bootstrap.library.path");

			// dummy variable to load awt.dll
			java.awt.Color awtColor = new java.awt.Color(0, 0, 0);
			System.load(javaHome + "\\jawt.dll");
		} else if (System.getProperty("java.vm.vendor").equals(
				"Sun Microsystems Inc.")) {
			String javaHome = System.getProperty("java.home");

			// dummy variable to load awt.dll
			java.awt.Color awtColor = new java.awt.Color(0, 0, 0);
			System.load(javaHome + "\\bin\\jawt.dll");
		} else {
			throw new ODFException("should be launched by using IBM Java");
		}

		System.load(openOfficeProgramPath + "..\\URE\\bin\\uwinapi.dll");
		try {
			System.load(openOfficeProgramPath + "officebean.dll");			
		} catch (UnsatisfiedLinkError e) {
			System.load(openOfficeProgramPath + "..\\Basis\\program\\officebean.dll"); // older than OpenOffice 3.2.1
		}
		System.load(openOfficeProgramPath + "..\\URE\\bin\\sal3.dll");
		System.load(openOfficeProgramPath + "..\\URE\\bin\\jpipe.dll");

		ClassLoader javaClassLoader = null;
		//TODO replace with toURI().toURL()
		try {
			URL[] jarList = new URL[] {
					new File(openOfficeProgramPath + "..\\URE\\java\\juh.jar")
							.toURL(),
					new File(openOfficeProgramPath + "..\\URE\\java\\jurt.jar")
							.toURL(),
					new File(openOfficeProgramPath + "..\\URE\\java\\ridl.jar")
							.toURL(),
					new File(openOfficeProgramPath
							+ "..\\Basis\\program\\classes\\unoil.jar").toURL() };

			javaClassLoader = new URLClassLoader(jarList, Bootstrap.class
					.getClassLoader());

		} catch (MalformedURLException murle) {
			throw new ODFException(murle.getMessage());
		}

		return javaClassLoader;
	}

	private static String getWindowClass(int hwnd) {
		return WindowUtil.GetWindowClassName(hwnd);
	}

	private static int getOpenOfficeFrameNum(int hWnd, int frameNum) {
		int result = frameNum;
		int hwndChild = WindowUtil.GetChildWindow(hWnd);
		while (hwndChild != 0) {
			String winClass = getWindowClass(hwndChild);
			if (winClass.equals("SALTMPSUBFRAME")) {
				result++;
			} else {
				result = getOpenOfficeFrameNum(hwndChild, result);
			}
			hwndChild = WindowUtil.GetNextWindow(hwndChild);
		}
		return result;
	}

	public static int getOpenOfficeFrameNum() {
		int result = 0;
		int hwndChild = WindowUtil
				.GetChildWindow(WindowUtil.GetDesktopWindow());
		// OS.GetWindow (OS.GetDesktopWindow(), OS.GW_CHILD);
		while (hwndChild != 0) {
			result = getOpenOfficeFrameNum(hwndChild, result);
			String winClass = getWindowClass(hwndChild);
			if (winClass.equals("SALFRAME")) {
				result++;
			} else {
				result = getOpenOfficeFrameNum(hwndChild, result);
			}
			hwndChild = WindowUtil.GetNextWindow(hwndChild);
		}
		return result;
	}
}