NewResourceViewImpl.java

/*
 * Copyright 2016 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.
 * 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.kie.workbench.common.widgets.client.handlers;

import java.util.List;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;

import com.google.gwt.dom.client.DivElement;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Label;
import org.guvnor.common.services.project.model.Package;
import org.gwtbootstrap3.client.ui.Column;
import org.gwtbootstrap3.client.ui.FormLabel;
import org.gwtbootstrap3.client.ui.HelpBlock;
import org.gwtbootstrap3.client.ui.Row;
import org.gwtbootstrap3.client.ui.TextBox;
import org.gwtbootstrap3.client.ui.constants.ColumnSize;
import org.gwtbootstrap3.client.ui.constants.ValidationState;
import org.jboss.errai.common.client.ui.ElementWrapperWidget;
import org.jboss.errai.ui.client.local.api.IsElement;
import org.jboss.errai.ui.client.local.spi.TranslationService;
import org.jboss.errai.ui.shared.api.annotations.DataField;
import org.jboss.errai.ui.shared.api.annotations.Templated;
import org.kie.workbench.common.widgets.client.resources.i18n.KieWorkbenchWidgetsConstants;
import org.uberfire.commons.data.Pair;
import org.uberfire.ext.editor.commons.client.validation.ValidatorWithReasonCallback;
import org.uberfire.ext.widgets.common.client.common.popups.BaseModal;
import org.uberfire.ext.widgets.common.client.common.popups.footers.ModalFooterOKCancelButtons;

@Templated
@ApplicationScoped
public class NewResourceViewImpl implements NewResourceView, IsElement {

    @DataField
    DivElement fileNameGroup = Document.get().createDivElement();

    @DataField
    FormLabel fileTypeLabel = new FormLabel();

    @Inject
    @DataField
    TextBox fileNameTextBox;

    @Inject
    @DataField
    HelpBlock fileNameHelpInline;

    @Inject
    @DataField
    PackageListBox packageListBox;

    @DataField
    DivElement packageGroup = Document.get().createDivElement();

    @Inject
    @DataField
    HelpBlock packageHelpInline;

    @DataField
    DivElement handlerExtensionsGroup = Document.get().createDivElement();

    @Inject
    @DataField
    FlowPanel handlerExtensions;

    TranslationService translationService;

    BaseModal modal;

    private NewResourcePresenter presenter;

    private final Command okCommand = new Command() {
        @Override
        public void execute() {
            onOKButtonClick();
        }
    };

    private final Command cancelCommand = new Command() {
        @Override
        public void execute() {
            hide();
        }
    };

    private final ModalFooterOKCancelButtons footer = new ModalFooterOKCancelButtons( okCommand,
                                                                                      cancelCommand );

    @Inject
    public NewResourceViewImpl( TranslationService translationService ) {
        this.translationService = translationService;
        footer.enableOkButton( true );
    }

    @PostConstruct
    public void init() {
        modal = new BaseModal();

        modal.setBody( ElementWrapperWidget.getWidget( this.getElement() ) );

        modal.add( footer );

        fileNameTextBox.setPlaceholder( translationService.getTranslation( KieWorkbenchWidgetsConstants.NewResourceViewResourceNamePlaceholder ) );
        fileTypeLabel.setShowRequiredIndicator( true );
    }

    @Override
    public void init( final NewResourcePresenter presenter ) {
        this.presenter = presenter;
    }

    @Override
    public void show() {
        //Clear previous resource name
        fileNameTextBox.setText( "" );

        clearErrors();

        modal.show();
    }

    @Override
    public void hide() {
        modal.hide();
    }

    @Override
    public void setActiveHandler( final NewResourceHandler handler ) {
        final List<Pair<String, ? extends IsWidget>> extensions = handler.getExtensions();
        final boolean showExtensions = !( extensions == null || extensions.isEmpty() );
        fileTypeLabel.setText( handler.getDescription() );

        packageListBox.setContext( handler.getProjectContext(), handler.supportsDefaultPackage() );

        handlerExtensions.clear();
        handlerExtensionsGroup.getStyle().setDisplay( showExtensions ? Style.Display.BLOCK : Style.Display.NONE );
        if ( showExtensions ) {
            extensions.forEach( pair -> {
                handlerExtensions.add( pair.getK2() );
            } );
        }
    }

    void onOKButtonClick() {

        clearErrors();

        //Generic validation
        final String fileName = fileNameTextBox.getText();
        if ( fileName == null || fileName.trim().isEmpty() ) {
            fileNameGroup.addClassName( ValidationState.ERROR.getCssName() );
            fileNameHelpInline.setText( translationService.getTranslation( KieWorkbenchWidgetsConstants.NewResourceViewFileNameIsMandatory ) );
            return;
        }

        if ( packageListBox.getSelectedPackage() == null ) {
            packageGroup.addClassName( ValidationState.ERROR.getCssName() );
            packageHelpInline.setText( translationService.getTranslation( KieWorkbenchWidgetsConstants.NewResourceViewMissingPath ) );
            return;
        }

        //Specialized validation
        presenter.validate( fileName,
                            new ValidatorWithReasonCallback() {

                                @Override
                                public void onSuccess() {
                                    presenter.makeItem( fileName );
                                }

                                @Override
                                public void onFailure() {

                                }

                                @Override
                                public void onFailure( final String reason ) {
                                    fileNameGroup.addClassName( ValidationState.ERROR.getCssName() );
                                    fileNameHelpInline.setText( reason );
                                }

                            } );
    }

    @Override
    public Package getSelectedPackage() {
        return packageListBox.getSelectedPackage();
    }

    @Override
    public void setTitle( String title ) {
        modal.setTitle( title );
    }

    @Override
    public void setResourceName( String resourceName ) {
        fileNameTextBox.setText( resourceName );
    }

    protected void clearErrors() {
        fileNameGroup.removeClassName( ValidationState.ERROR.getCssName() );
        fileNameHelpInline.clearError();
        packageGroup.removeClassName( ValidationState.ERROR.getCssName() );
        packageHelpInline.clearError();
    }
}