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Uberfire Runtime PlugIns Client
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/*
 * Copyright 2015 JBoss, by Red Hat, Inc
 *
 * 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 org.uberfire.ext.plugin.client;

import java.util.Collection;
import javax.annotation.PostConstruct;
import javax.inject.Inject;

import com.google.gwt.core.client.ScriptInjector;
import com.google.gwt.dom.client.StyleInjector;
import org.jboss.errai.bus.client.api.ClientMessageBus;
import org.jboss.errai.common.client.api.Caller;
import org.jboss.errai.common.client.api.RemoteCallback;
import org.jboss.errai.ioc.client.api.AfterInitialization;
import org.jboss.errai.ioc.client.api.EntryPoint;
import org.uberfire.client.mvp.Activity;
import org.uberfire.client.mvp.ActivityManager;
import org.uberfire.client.mvp.PerspectiveActivity;
import org.uberfire.client.mvp.PopupActivity;
import org.uberfire.client.mvp.SplashScreenActivity;
import org.uberfire.client.mvp.WorkbenchEditorActivity;
import org.uberfire.client.mvp.WorkbenchScreenActivity;
import org.uberfire.ext.plugin.client.resources.WebAppResource;
import org.uberfire.ext.plugin.model.DynamicMenu;
import org.uberfire.ext.plugin.model.DynamicMenuItem;
import org.uberfire.ext.plugin.model.RuntimePlugin;
import org.uberfire.ext.plugin.service.PluginServices;
import org.uberfire.client.mvp.PlaceManager;
import org.uberfire.client.workbench.Workbench;
import org.uberfire.client.workbench.widgets.menu.WorkbenchMenuBar;
import org.uberfire.mvp.impl.DefaultPlaceRequest;
import org.uberfire.security.ResourceType;
import org.uberfire.workbench.model.menu.MenuFactory;

import static org.uberfire.workbench.model.ActivityResourceType.*;
import static com.google.gwt.core.client.ScriptInjector.*;

@EntryPoint
public class RuntimePluginsEntryPoint {

    @Inject
    private Workbench workbench;

    @Inject
    private Caller pluginServices;

    @Inject
    private ClientMessageBus bus;

    @Inject
    private WorkbenchMenuBar menubar;

    @Inject
    private PlaceManager placeManager;

    @Inject
    private ActivityManager activityManager;

    @PostConstruct
    public void init() {
        WebAppResource.INSTANCE.CSS().ensureInjected();
        workbench.addStartupBlocker( RuntimePluginsEntryPoint.class );
    }

    @AfterInitialization
    public void setup() {
        pluginServices.call( new RemoteCallback>() {
            @Override
            public void callback( Collection response ) {
                for ( final RuntimePlugin plugin : response ) {
                    ScriptInjector.fromString( plugin.getScript() ).setWindow( TOP_WINDOW ).inject();
                    StyleInjector.inject( plugin.getStyle(), true );
                }
                pluginServices.call( new RemoteCallback>() {
                    @Override
                    public void callback( Collection response ) {
                        for ( final DynamicMenu menu : response ) {
                            if ( !menu.getMenuItems().isEmpty() ) {
                                MenuFactory.SubMenusBuilder>> dynamicMenu = MenuFactory.newTopLevelMenu( menu.getName() ).orderAll( 100 ).menus();
                                for ( final DynamicMenuItem dynamicMenuItem : menu.getMenuItems() ) {

                                    String activityId = dynamicMenuItem.getActivityId();
                                    ResourceType resourceType = getResourceType( activityId );

                                    dynamicMenu.menu( dynamicMenuItem.getMenuLabel() )
                                        .withPermission( activityId, resourceType )
                                        .respondsWith( () -> placeManager.goTo( activityId ) )
                                        .endMenu();
                                }
                                menubar.addMenus( dynamicMenu.endMenus().endMenu().build() );
                            }
                        }
                        workbench.removeStartupBlocker( RuntimePluginsEntryPoint.class );
                    }
                } ).listDynamicMenus();
            }
        } ).listRuntimePlugins();
    }

    public ResourceType getResourceType( String activityId ) {

        Activity activity = activityManager.getActivity(new DefaultPlaceRequest(activityId), false);
        if (activity != null) {
            if( activity instanceof PerspectiveActivity){
                return PERSPECTIVE;
            }
            if( activity instanceof WorkbenchScreenActivity) {
                return SCREEN;
            }
            if( activity instanceof WorkbenchEditorActivity) {
                return EDITOR;
            }
            if( activity instanceof SplashScreenActivity) {
                return EDITOR;
            }
            if( activity instanceof PopupActivity) {
                return POPUP;
            }
        }
        return ResourceType.UNKNOWN;
    }
}