com.canoo.dolphin.todo.client.ToDoClient.java Source code

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Here is the source code for com.canoo.dolphin.todo.client.ToDoClient.java

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/*
 * Copyright 2015-2016 Canoo Engineering AG.
 *
 * 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.canoo.dolphin.todo.client;

import com.canoo.dolphin.client.ClientContext;
import com.canoo.dolphin.client.ClientInitializationException;
import com.canoo.dolphin.client.DolphinSessionException;
import com.canoo.dolphin.client.javafx.DolphinPlatformApplication;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;
import javafx.stage.Stage;
import org.apache.http.client.HttpResponseException;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.net.MalformedURLException;
import java.net.URL;

public class ToDoClient extends DolphinPlatformApplication {

    @Override
    protected URL getServerEndpoint() throws MalformedURLException {
        return new URL("http://localhost:8080/todo-app/dolphin");
    }

    @Override
    protected void start(Stage primaryStage, ClientContext clientContext) throws Exception {
        clientContext.onRemotingError(e -> {
            if (e.getCause() != null && e.getCause() instanceof DolphinSessionException) {
                showError("A remoting error happened", "Looks like we ended in a session timeout :(", e);
            } else if (e.getCause() != null && e.getCause() instanceof HttpResponseException) {
                showError("A remoting error happened", "Looks like the server sended a bad response :(", e);
            } else {
                showError("A remoting error happened", "Looks like we have a big problem :(", e);
            }
        });

        ToDoViewBinder viewController = new ToDoViewBinder(clientContext);
        primaryStage.setScene(new Scene(viewController.getParent()));
        primaryStage.show();
    }

    private void showError(String header, String content, Exception e) {
        e.printStackTrace();

        Alert alert = new Alert(Alert.AlertType.ERROR);
        alert.setTitle("Error");
        alert.setHeaderText(header);
        alert.setContentText(content);

        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);
        String exceptionText = sw.toString();

        Label label = new Label("The exception stacktrace was:");

        TextArea textArea = new TextArea(exceptionText);
        textArea.setEditable(false);
        textArea.setWrapText(true);

        textArea.setMaxWidth(Double.MAX_VALUE);
        textArea.setMaxHeight(Double.MAX_VALUE);
        GridPane.setVgrow(textArea, Priority.ALWAYS);
        GridPane.setHgrow(textArea, Priority.ALWAYS);

        GridPane expContent = new GridPane();
        expContent.setMaxWidth(Double.MAX_VALUE);
        expContent.add(label, 0, 0);
        expContent.add(textArea, 0, 1);

        alert.getDialogPane().setExpandableContent(expContent);
        alert.showAndWait();
        System.exit(-1);
    }

    @Override
    protected void onInitializationError(Stage primaryStage,
            ClientInitializationException initializationException) {
        showError("Error on initialization", "A error happened while initializing the Client and Connection",
                initializationException);
    }

    public static void main(String[] args) {
        Logger OD_LOGGER = Logger.getLogger("org.opendolphin");
        OD_LOGGER.setLevel(Level.SEVERE);

        Application.launch(args);
    }

}