de.ks.idnadrev.category.create.CreateCategoryController.java Source code

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Here is the source code for de.ks.idnadrev.category.create.CreateCategoryController.java

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/**
 * Copyright [2014] [Christian Loehnert]
 *
 * 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 de.ks.idnadrev.category.create;

import com.google.common.net.MediaType;
import de.ks.BaseController;
import de.ks.file.FileStore;
import de.ks.idnadrev.entity.Category;
import de.ks.idnadrev.entity.FileReference;
import de.ks.imagecache.Images;
import de.ks.validation.validators.NamedEntityMustNotExistValidator;
import de.ks.validation.validators.NotEmptyValidator;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.ColorPicker;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.image.ImageView;
import javafx.stage.FileChooser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.inject.Inject;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Files;
import java.util.ResourceBundle;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class CreateCategoryController extends BaseController<Category> {
    private static final Logger log = LoggerFactory.getLogger(CreateCategoryController.class);
    @FXML
    protected ColorPicker colorSelection;
    @FXML
    protected Label noImageLabel;
    @FXML
    protected TextField name;
    @FXML
    protected Button imageSelection;
    @FXML
    protected Button save;
    @FXML
    protected ImageView imageView;

    @Inject
    protected FileStore fileStore;

    private CompletableFuture<FileReference> fileStoreReference;
    private File file;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        validationRegistry.registerValidator(name, new NotEmptyValidator());
        validationRegistry.registerValidator(name, new NamedEntityMustNotExistValidator<>(Category.class,
                t -> t.getId() == store.<Category>getModel().getId()));

        name.textProperty()
                .bindBidirectional(store.getBinding().getStringProperty(Category.class, c -> c.getName()));
        store.getBinding().getStringProperty(Category.class, c -> c.getColorAsString())
                .bindBidirectional(colorSelection.valueProperty(), new ColorStringConverter());

        save.disableProperty().bind(validationRegistry.invalidProperty());
    }

    @FXML
    void onImageSelection() {
        FileChooser fileChooser = new FileChooser();
        File newFile = fileChooser.showOpenDialog(imageSelection.getScene().getWindow());
        if (newFile != null) {
            try {
                selectImage(newFile);
            } catch (IOException e) {
                log.error("Could not probe content type of {}", newFile);
            }
        }
    }

    protected void selectImage(File newFile) throws IOException {
        MediaType mediaType = MediaType.parse(Files.probeContentType(newFile.toPath()));
        if (mediaType.is(MediaType.ANY_IMAGE_TYPE)) {
            loadImage(newFile);
            fileStoreReference = fileStore.getReference(newFile);
            this.file = newFile;
        }
    }

    private void loadImage(File newFile) {
        imageSelection.setDisable(true);
        Images.later(newFile.getPath(), controller.getExecutorService())//
                .thenAcceptAsync(img -> {
                    imageSelection.setDisable(false);
                    imageView.setImage(img);
                    noImageLabel.setVisible(false);
                }, controller.getJavaFXExecutor()).exceptionally(e -> {
                    imageSelection.setDisable(false);
                    noImageLabel.setVisible(true);
                    return null;
                });
    }

    @FXML
    void onSave() {
        controller.save();
        controller.stopCurrent();
    }

    @Override
    public void duringLoad(Category model) {
        if (model.getImage() != null) {
            File imageFile = fileStore.getFile(model.getImage());
            controller.getJavaFXExecutor().submit(() -> loadImage(imageFile));
        }
    }

    @Override
    public void duringSave(Category model) {
        if (fileStoreReference != null) {
            FileReference reference = null;
            try {
                reference = fileStoreReference.get();
                model.setImage(reference);
            } catch (InterruptedException e) {
                log.error("Got interrupted while resolving file reference", e);
            } catch (ExecutionException e) {
                log.error("Could not resolve file reference", e);
            }
            fileStore.scheduleCopy(reference, file);
        } else if (imageView.getImage() == null) {
            model.setImage(null);
        }
    }
}