ConsoleTab.java

/*
 * Copyright (C) 2015-2017 PÂRIS Quentin
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package org.phoenicis.javafx.views.mainwindow.console;

import javafx.application.Platform;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.Tab;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.BorderPane;
import javafx.scene.text.Text;
import javafx.scene.text.TextFlow;

import java.util.function.Consumer;

import static org.phoenicis.configuration.localisation.Localisation.translate;

public class ConsoleTab extends Tab {
    private final CommandHistory commandHistory = new CommandHistory();
    private final TextField command = new TextField();
    private final TextFlow console = new TextFlow();
    private final ScrollPane consolePane;
    private boolean forceScroll = false;
    private Consumer<String> onSendCommand = text -> {
    };

    public ConsoleTab() {
        final BorderPane content = new BorderPane();

        this.setText(translate("Console"));
        this.setContent(content);

        command.getStyleClass().add("consoleCommandType");
        consolePane = new ScrollPane(console);

        content.widthProperty()
                .addListener((observable, oldValue, newValue) -> console.setPrefWidth(content.getWidth() * 0.94));

        content.getStyleClass().add("rightPane");

        consolePane.getStyleClass().add("console");
        consolePane.vvalueProperty().addListener((ov, oldValue, newValue) -> {
            if (forceScroll && (double) newValue != 1.0) {
                consolePane.vvalueProperty().setValue(1.0);
            }
        });

        content.setCenter(consolePane);
        content.setBottom(command);

        command.setOnKeyPressed(event -> {
            if (event.getCode() == KeyCode.ENTER) {
                this.onSendCommand.accept(command.getText());
                commandHistory.add(new CommandHistory.Item(command.getText(), command.getCaretPosition()));
                clearCommand();
            }
        });

        consolePane.setOnMouseMoved(event -> forceScroll = false);

        command.setOnKeyReleased(event -> {
            if (event.getCode() == KeyCode.UP) {
                CommandHistory.Item historyItem = commandHistory.up();
                command.setText(historyItem.getCommand());
                command.positionCaret(historyItem.getCursorPosition());
            } else if (event.getCode() == KeyCode.DOWN) {
                CommandHistory.Item historyItem = commandHistory.down();
                command.setText(historyItem.getCommand());
                command.positionCaret(historyItem.getCursorPosition());
            }
        });

        Platform.runLater(command::requestFocus);
        command.setPromptText("> ");
    }

    public void setOnSendCommand(Consumer<String> onSendCommand) {
        this.onSendCommand = onSendCommand;
    }

    public void disableCommand() {
        command.setDisable(true);
    }

    public void enableCommand() {
        Platform.runLater(() -> {
            command.setDisable(false);
            command.requestFocus();
        });
    }

    public void clearCommand() {
        command.setText("");
    }

    public String getCommandValue() {
        return command.getText();
    }

    public void appendTextToConsole(String text) {
        appendTextToConsole(text, ConsoleTextType.DEFAULT);
    }

    public void appendTextToConsole(String text, ConsoleTextType textType) {
        final Text commandText = new Text(text);
        commandText.setWrappingWidth(console.getWidth());
        commandText.getStyleClass().addAll("consoleText", textType.getCssName());

        Platform.runLater(() -> {
            forceScroll = true;
            console.getChildren().add(commandText);
            console.layout();
            consolePane.vvalueProperty().setValue(1.0);
        });
    }

}