/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.motorola.studio.android.perspective;

import java.net.URL;

import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.internal.ui.JavaPerspectiveFactory;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IFolderLayout;
import org.eclipse.ui.IPageLayout;
import org.eclipse.ui.IPageListener;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IPerspectiveFactory;
import org.eclipse.ui.IPerspectiveListener;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PerspectiveAdapter;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.intro.IIntroConstants;
import org.osgi.framework.BundleContext;

import com.motorola.studio.android.AndroidPlugin;
import com.motorola.studio.android.common.log.StudioLogger;
import com.motorola.studio.android.common.utilities.EclipseUtils;

@SuppressWarnings("restriction")
public class MotodevStudioAndroidPerspective extends JavaPerspectiveFactory
{
    private static String VIEW_PACKAGE_EXPLORER = "org.eclipse.jdt.ui.PackageExplorer";

    private static String VIEW_PROBLEM = "org.eclipse.ui.views.ProblemView";

    private static String VIEW_CONSOLE = "org.eclipse.ui.console.ConsoleView";

    private static String VIEW_OUTLINE = "org.eclipse.ui.views.ContentOutline";

    private static String VIEW_ANDROID_EMULATOR =
            "com.motorola.studio.android.emulator.androidView";

    private static String VIEW_SNIPPETS =
            "org.eclipse.wst.common.snippets.internal.ui.SnippetsView";

    // DDMS Views

    private static String DDMSVIEW_EMULATOR_CONTROL =
            "com.android.ide.eclipse.ddms.views.EmulatorControlView";

    private static String DDMSVIEW_LOGCAT = "com.android.ide.eclipse.ddms.views.LogCatView";

    private static String DDMSVIEW_FILE_EXPLORER =
            "com.android.ide.eclipse.ddms.views.FileExplorerView";

    private static String PERSPECTIVE_ANDROID = "com.motorola.studio.android.perspective";

    private static String PERSPECTIVE_OPHONE = "com.motorola.studio.android.ophone.perspective";

    private static String PERSPECTIVE_DDMS = "com.android.ide.eclipse.ddms.Perspective";

    private static String PERSPECTIVE_EMULATOR = "com.motorola.studio.android.emulator.perspective";

    private static String PERSPECTIVE_DEBUG = "org.eclipse.debug.ui.DebugPerspective";

    private static String LAUNCH_COOLBAR_SHORTCUT = "org.eclipse.debug.ui.launchActionSet";

    private static String VIEW_TML_DEV_MGT =
            "org.eclipse.sequoyah.device.framework.ui.InstanceMgtView";

    private static String WIZARD_PROJECT = "com.motorola.studio.android.wizards.newProjectWizard";

    private static String WIZARD_WIDGET_PROJECT =
            "com.motorola.studio.android.wizards.newWidgetProjectWizard";

    private static String WIZARD_ACTIVITY = "com.motorola.studio.android.wizards.newActivityWizard";

    private static String WIZARD_ACTIVITY_BASED_ON_TEMPLATE =
            "com.motorola.studio.android.wizards.newActivityBasedOnTemplateWizard";

    private static String WIZARD_RECEIVER = "com.motorola.studio.android.wizards.newReceiverWizard";

    private static String WIZARD_SERVICE = "com.motorola.studio.android.wizards.newServiceWizard";

    private static String WIZARD_PROVIDER = "com.motorola.studio.android.wizards.newProviderWizard";

    private static String WIZARD_ANDROID_XML =
            "com.android.ide.eclipse.editors.wizards.NewXmlFileWizard";

    private static String WIZARD_WIDGET_PROVIDER =
            "com.motorola.studio.android.wizard.newWidgetProviderWizard";

    private static String WIZARD_JAVA_PACKAGE =
            "org.eclipse.jdt.ui.wizards.NewPackageCreationWizard";

    private static String WIZARD_JAVA_CLASS = "org.eclipse.jdt.ui.wizards.NewClassCreationWizard";

    private static String WIZARD_JAVA_INTERFACE =
            "org.eclipse.jdt.ui.wizards.NewInterfaceCreationWizard";

    private static String WIZARD_NEW_FOLDER = "org.eclipse.ui.wizards.new.folder";

    private static String VIEW_APPLICATION_SIGNING_TOOL =
            "com.motorola.studio.android.packaging.ui.signingview";

    private static final String STUDIO_INFO_INITIAL_PAGE_PROPERTY = "studio.android.initial.page";

    private static final String STUDIO_INFO_INITIAL_PAGE_FILE = "MOTODEV/index.html";

    private static IPerspectiveListener perspectiveListener = null;

    /**
     * Creates the initial layout for a page.
     * 
     * @param layout
     *            the page layout
     * 
     * @see IPerspectiveFactory#createInitialLayout(IPageLayout)
     */
    @Override
    public void createInitialLayout(final IPageLayout layout)
    {
        String editorArea = layout.getEditorArea();
        layout.setEditorAreaVisible(true);

        IFolderLayout left = layout.createFolder("left", IPageLayout.LEFT, 0.2f, editorArea);
        left.addView(VIEW_PACKAGE_EXPLORER);
        left.addView(DDMSVIEW_FILE_EXPLORER);

        IFolderLayout leftBottom =
                layout.createFolder("leftBottom", IPageLayout.BOTTOM, 0.59f, "left");
        leftBottom.addView(VIEW_SNIPPETS);
        leftBottom.addView(VIEW_OUTLINE);

        IFolderLayout right = layout.createFolder("right", IPageLayout.RIGHT, 0.6f, editorArea);
        right.addView(VIEW_ANDROID_EMULATOR);

        IFolderLayout bottomMiddle =
                layout.createFolder("bottomMiddle", IPageLayout.BOTTOM, 0.59f, editorArea);
        bottomMiddle.addView(VIEW_TML_DEV_MGT);
        bottomMiddle.addView(DDMSVIEW_EMULATOR_CONTROL);
        bottomMiddle.addView(DDMSVIEW_LOGCAT);
        bottomMiddle.addView(VIEW_CONSOLE);
        bottomMiddle.addView(VIEW_PROBLEM);
        bottomMiddle.addView(VIEW_APPLICATION_SIGNING_TOOL);

        layout.addShowViewShortcut(VIEW_TML_DEV_MGT);
        layout.addShowViewShortcut(VIEW_ANDROID_EMULATOR);
        layout.addShowViewShortcut(VIEW_SNIPPETS);
        layout.addShowViewShortcut(VIEW_APPLICATION_SIGNING_TOOL);
        //     layout.addShowViewShortcut(VIEW_VIDEOS);

        layout.addPerspectiveShortcut(PERSPECTIVE_ANDROID);
        layout.addPerspectiveShortcut(PERSPECTIVE_OPHONE);
        layout.addPerspectiveShortcut(PERSPECTIVE_DDMS);
        layout.addPerspectiveShortcut(PERSPECTIVE_DEBUG);
        layout.addPerspectiveShortcut(PERSPECTIVE_EMULATOR);

        layout.addActionSet(LAUNCH_COOLBAR_SHORTCUT);

        layout.addNewWizardShortcut(WIZARD_PROJECT);
        layout.addNewWizardShortcut(WIZARD_WIDGET_PROJECT);
        layout.addNewWizardShortcut(WIZARD_ACTIVITY);
        layout.addNewWizardShortcut(WIZARD_ACTIVITY_BASED_ON_TEMPLATE);
        layout.addNewWizardShortcut(WIZARD_RECEIVER);
        layout.addNewWizardShortcut(WIZARD_SERVICE);
        layout.addNewWizardShortcut(WIZARD_PROVIDER);
        layout.addNewWizardShortcut(WIZARD_WIDGET_PROVIDER);
        layout.addNewWizardShortcut(WIZARD_JAVA_PACKAGE);
        layout.addNewWizardShortcut(WIZARD_JAVA_CLASS);
        layout.addNewWizardShortcut(WIZARD_JAVA_INTERFACE);
        layout.addNewWizardShortcut(WIZARD_ANDROID_XML);
        layout.addNewWizardShortcut(WIZARD_NEW_FOLDER);

        final IWorkbenchWindow activeWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
        IWorkbenchPage activePage = null;
        if (activeWindow != null)
        {
            activePage = activeWindow.getActivePage();
            addPerspectiveListener(activeWindow);
            firePerspectiveInitActions(activePage, layout);
        }

        IPageListener pageListener = new IPageListener()
        {
            public void pageActivated(IWorkbenchPage page)
            {
                firePerspectiveInitActions(page, layout);
                Display disp = PlatformUI.getWorkbench().getDisplay();
                final IPageListener thisListener = this;
                disp.asyncExec(new Runnable()
                {
                    public void run()
                    {
                        if (activeWindow != null)
                        {
                            activeWindow.removePageListener(thisListener);
                        }
                    }
                });
            }

            public void pageClosed(IWorkbenchPage page)
            {
                //do nothing
            }

            public void pageOpened(IWorkbenchPage page)
            {
                //do nothing
            }

        };
        if (activeWindow != null)
        {
            activeWindow.addPageListener(pageListener);
        }

        StudioLogger.debug(MotodevStudioAndroidPerspective.class,
                "MOTODEV Studio Perspective created.");
    }

    /**
     * Creates and adds a perspective listener that will remove the
     * "maximized state" of the Welcome (intro) view before hiding it.
     * 
     * @param activeWindow
     *            Workbench Window where the listener will be added.
     */
    private synchronized static void addPerspectiveListener(IWorkbenchWindow activeWindow)
    {
        if (perspectiveListener == null)
        {
            perspectiveListener = new PerspectiveAdapter()
            {

                @Override
                public void perspectiveChanged(IWorkbenchPage page,
                        IPerspectiveDescriptor perspective, IWorkbenchPartReference partRef,
                        String changeId)
                {
                    if (PERSPECTIVE_ANDROID.equals(perspective.getId()))
                    {
                        if (IIntroConstants.INTRO_VIEW_ID.equals(partRef.getId()))
                        {
                            if (IWorkbenchPage.CHANGE_VIEW_HIDE.equals(changeId))
                            {
                                if (IWorkbenchPage.STATE_MAXIMIZED == page.getPartState(partRef))
                                {
                                    page.toggleZoom(partRef);
                                }
                            }
                        }
                    }
                }

            };
            activeWindow.addPerspectiveListener(perspectiveListener);
        }

    }

    /**
     * 
     * @param activeWindow
     * @param layout
     */
    private void firePerspectiveInitActions(final IWorkbenchPage activePage,
            final IPageLayout layout)
    {
        if (activePage != null)
        {
            // Open MOTODEV Web Resources on a Web Browser Editor
            openStudioInfoOnWebBrowserEditor(activePage);
        }

    }

    /**
     * Opens a web browser with useful information from Studio for Android
     */
    public static void openStudioInfoOnWebBrowserEditor(IWorkbenchPage page)
    {

        URL initialPageURL = getWebResourcesURL();

        if ((initialPageURL != null) && (!Platform.getOS().equals(Platform.OS_LINUX)))
        {
            EclipseUtils.openedWebEditor(page, initialPageURL);
        }
    }

    /**
     * @return
     */
    public static URL getWebResourcesURL()
    {
        URL initialPageURL = null;

        try
        {
            BundleContext context = AndroidPlugin.getDefault().getBundle().getBundleContext();
            String initialPage = context.getProperty(STUDIO_INFO_INITIAL_PAGE_PROPERTY);
            StudioLogger.debug(MotodevStudioAndroidPerspective.class, "Read initial page property:"
                    + STUDIO_INFO_INITIAL_PAGE_PROPERTY + " = " + initialPage);
            if (initialPage != null)
            {
                StudioLogger.debug(MotodevStudioAndroidPerspective.class,
                        "Using the customized URL to be opened in the Web Browser Editor:"
                                + initialPage);
                initialPageURL = new URL(initialPage);
            }
        }
        catch (Exception e)
        {
            StudioLogger.error(
                    MotodevStudioAndroidPerspective.class,
                    "Unable to read customized URL to be opened in the Web Browser Editor..."
                            + e.getMessage());
        }

        if (initialPageURL == null)
        {
            try
            {
                StudioLogger.debug(MotodevStudioAndroidPerspective.class,
                        "Use the default URL to be opened in the Web Browser Editor.");
                URL installDir = Platform.getInstallLocation().getURL();
                initialPageURL = new URL(installDir, STUDIO_INFO_INITIAL_PAGE_FILE);
            }
            catch (Exception e)
            {
                StudioLogger.error(MotodevStudioAndroidPerspective.class,
                        "Unable to show Web Browser Editor with URL: " + e.getMessage());
            }
        }
        return initialPageURL;
    }

}