GlobalsEditorPresenter.java

/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      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.drools.workbench.screens.globals.client.editor;

import java.util.List;
import javax.enterprise.event.Event;
import javax.inject.Inject;

import com.google.gwt.user.client.ui.IsWidget;
import org.drools.workbench.screens.globals.client.type.GlobalResourceType;
import org.drools.workbench.screens.globals.model.GlobalsEditorContent;
import org.drools.workbench.screens.globals.model.GlobalsModel;
import org.drools.workbench.screens.globals.service.GlobalsEditorService;
import org.guvnor.common.services.shared.validation.model.ValidationMessage;
import org.jboss.errai.common.client.api.Caller;
import org.jboss.errai.common.client.api.RemoteCallback;
import org.kie.workbench.common.services.shared.validation.ValidationService;
import org.kie.workbench.common.widgets.client.popups.validation.ValidationPopup;
import org.kie.workbench.common.widgets.client.resources.i18n.CommonConstants;
import org.kie.workbench.common.widgets.metadata.client.KieEditor;
import org.uberfire.backend.vfs.ObservablePath;
import org.uberfire.backend.vfs.Path;
import org.uberfire.client.annotations.WorkbenchEditor;
import org.uberfire.client.annotations.WorkbenchMenu;
import org.uberfire.client.annotations.WorkbenchPartTitle;
import org.uberfire.client.annotations.WorkbenchPartTitleDecoration;
import org.uberfire.client.annotations.WorkbenchPartView;
import org.uberfire.ext.widgets.common.client.callbacks.HasBusyIndicatorDefaultErrorCallback;
import org.uberfire.lifecycle.OnClose;
import org.uberfire.lifecycle.OnMayClose;
import org.uberfire.lifecycle.OnStartup;
import org.uberfire.mvp.Command;
import org.uberfire.mvp.ParameterizedCommand;
import org.uberfire.mvp.PlaceRequest;
import org.uberfire.workbench.events.NotificationEvent;
import org.uberfire.workbench.model.menu.Menus;

@WorkbenchEditor(identifier = "org.kie.guvnor.globals", supportedTypes = { GlobalResourceType.class }, priority = 101)
public class GlobalsEditorPresenter
        extends KieEditor {

    @Inject
    protected Caller<GlobalsEditorService> globalsEditorService;

    @Inject
    protected Caller<ValidationService> validationService;

    @Inject
    protected ValidationPopup validationPopup;

    private GlobalsEditorView view;

    @Inject
    private Event<NotificationEvent> notification;

    @Inject
    private GlobalResourceType type;

    private GlobalsModel model;

    public GlobalsEditorPresenter() {
    }

    @Inject
    public GlobalsEditorPresenter( final GlobalsEditorView baseView ) {
        super( baseView );
        this.view = baseView;
    }

    @OnStartup
    public void onStartup( final ObservablePath path,
                           final PlaceRequest place ) {
        super.init( path,
                    place,
                    type );
    }

    @Override
    protected void makeMenuBar() {
        menus = menuBuilder
                .addSave( versionRecordManager.newSaveMenuItem( this::onSave ) )
                .addCopy( versionRecordManager.getCurrentPath(),
                          fileNameValidator )
                .addRename( versionRecordManager.getPathToLatest(),
                            fileNameValidator )
                .addDelete( this::onDelete )
                .addValidate( onValidate() )
                .addNewTopLevelMenu( versionRecordManager.buildMenu() )
                .build();
    }

    protected void loadContent() {
        view.showLoading();
        globalsEditorService.call( getModelSuccessCallback(),
                                   getNoSuchFileExceptionErrorCallback() ).loadContent( versionRecordManager.getCurrentPath() );
    }

    protected RemoteCallback<GlobalsEditorContent> getModelSuccessCallback() {
        return new RemoteCallback<GlobalsEditorContent>() {

            @Override
            public void callback( final GlobalsEditorContent content ) {
                //Path is set to null when the Editor is closed (which can happen before async calls complete).
                if ( versionRecordManager.getCurrentPath() == null ) {
                    return;
                }

                model = content.getModel();

                resetEditorPages( content.getOverview() );
                addSourcePage();

                final List<String> fullyQualifiedClassNames = content.getFullyQualifiedClassNames();

                view.setContent( content.getModel().getGlobals(),
                                 fullyQualifiedClassNames,
                                 isReadOnly,
                                 content.getOverview().getMetadata().isGenerated() );

                createOriginalHash( model );
                view.hideBusyIndicator();
            }
        };
    }

    protected Command onValidate() {
        return new Command() {
            @Override
            public void execute() {
                globalsEditorService.call( new RemoteCallback<List<ValidationMessage>>() {
                    @Override
                    public void callback( final List<ValidationMessage> results ) {
                        if ( results == null || results.isEmpty() ) {
                            notification.fire( new NotificationEvent( CommonConstants.INSTANCE.ItemValidatedSuccessfully(),
                                                                      NotificationEvent.NotificationType.SUCCESS ) );
                        } else {
                            validationPopup.showMessages( results );
                        }
                    }
                } ).validate( versionRecordManager.getCurrentPath(),
                              model );
            }
        };
    }

    @Override
    protected void save() {
        validationService.call( ( validationMessages ) -> {
            if ( ( (List<ValidationMessage>) validationMessages ).isEmpty() ) {
                showSavePopup();
            } else {
                validationPopup.showSaveValidationMessages( () -> showSavePopup(),
                                                            () -> {
                                                            },
                                                            (List<ValidationMessage>) validationMessages );
            }
        } ).validateForSave( versionRecordManager.getCurrentPath(),
                             model );

        concurrentUpdateSessionInfo = null;
    }

    private void showSavePopup() {
        savePopUpPresenter.show( versionRecordManager.getCurrentPath(),
                                 new ParameterizedCommand<String>() {
                                     @Override
                                     public void execute( final String commitMessage ) {
                                         baseView.showSaving();
                                         globalsEditorService.call( getSaveSuccessCallback( model.hashCode() ),
                                                                    new HasBusyIndicatorDefaultErrorCallback( view ) ).save( versionRecordManager.getCurrentPath(),
                                                                                                                             model,
                                                                                                                             metadata,
                                                                                                                             commitMessage );
                                         concurrentUpdateSessionInfo = null;
                                     }
                                 } );
    }

    protected void onDelete() {
        validationService.call( ( validationMessages ) -> {
            if ( ( (List<ValidationMessage>) validationMessages ).isEmpty() ) {
                showDeletePopup( getVersionRecordManager().getCurrentPath() );
            } else {
                validationPopup.showDeleteValidationMessages( () -> showDeletePopup( versionRecordManager.getCurrentPath() ),
                                                              () -> {},
                                                              (List<ValidationMessage>) validationMessages );
            }
        } ).validateForDelete( versionRecordManager.getCurrentPath() );
    }

    private void showDeletePopup( final Path path ) {
        deletePopUpPresenter.show( comment -> {
            view.showBusyIndicator( CommonConstants.INSTANCE.Deleting() );
            globalsEditorService.call( getDeleteSuccessCallback(),
                                       new HasBusyIndicatorDefaultErrorCallback( view ) ).delete( path,
                                                                                                  "delete" );
        } );
    }

    private RemoteCallback<Path> getDeleteSuccessCallback() {
        return response -> {
            view.hideBusyIndicator();
            notification.fire( new NotificationEvent( org.uberfire.ext.editor.commons.client.resources.i18n.CommonConstants.INSTANCE.ItemDeletedSuccessfully() ) );
        };
    }

    @Override
    public void onSourceTabSelected() {
        globalsEditorService.call( new RemoteCallback<String>() {
            @Override
            public void callback( String source ) {
                updateSource( source );
            }
        } ).toSource( versionRecordManager.getCurrentPath(),
                      model );
    }

    @WorkbenchPartView
    public IsWidget getWidget() {
        return super.getWidget();
    }

    @OnClose
    public void onClose() {
        this.versionRecordManager.clear();
    }

    @OnMayClose
    public boolean mayClose() {
        return super.mayClose( model );
    }

    @WorkbenchPartTitleDecoration
    public IsWidget getTitle() {
        return super.getTitle();
    }

    @WorkbenchPartTitle
    public String getTitleText() {
        return super.getTitleText();
    }

    @WorkbenchMenu
    public Menus getMenus() {
        return menus;
    }
}