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Scenic View is a JavaFX application designed to make it simple to understand the current state of your application scenegraph, and to also easily manipulate properties of the scenegraph without having to keep editing your code. This lets you find bugs, and get things pixel perfect without having to do the compile-check-compile dance.

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/*
 * Scenic View, 
 * Copyright (C) 2012 Jonathan Giles, Ander Ruiz, Amy Fowler 
 *
 * 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 3 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, see .
 */
package org.scenicview.view;

import java.util.ArrayList;
import java.util.List;

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.control.Label;
import javafx.scene.control.Tooltip;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.Region;
import javafx.util.Duration;

class StatusBar extends HBox {
    private final Label windowTypeLabel;
    private final Label stageBoundsText;
    private final Label sceneSizeText;
    private final Label sceneMousePosText;
    private final Label nodeCountText;
    private final Label statusLabel = createValueLabel(null);
    private final List standardNodes = new ArrayList<>();
    private Timeline clearTimeout;

    StatusBar() {
        setId("main-statusbar");
        setSpacing(4);

        Tooltip tooltip = new Tooltip("Windows bounds in the screen");
        windowTypeLabel = createLabel("Stage:", tooltip);
        stageBoundsText = createValueLabel(tooltip);

        Region spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);
        spacer.setPrefSize(100, 10);
        spacer.setMinSize(14, 12);
        spacer.setPrefSize(14, 12);
        spacer.setMaxSize(14, 12);
        getChildren().addAll(windowTypeLabel, stageBoundsText, spacer);

        tooltip = new Tooltip("Scene dimensions in pixels");
        Label label = createLabel("Scene:", tooltip);
        spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);
        spacer.setPrefSize(14, 12);
        spacer.setPrefSize(14, 12);
        spacer.setMaxSize(14, 12);
        sceneSizeText = createValueLabel(tooltip);
        getChildren().addAll(label, sceneSizeText, spacer);

        tooltip = new Tooltip("Mouse position on the main scene");
        label = createLabel("Mouse Position:", tooltip);
        spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);
        spacer.setPrefSize(18, 12);
        sceneMousePosText = createValueLabel(tooltip);

        getChildren().addAll(label, sceneMousePosText, spacer);

        tooltip = new Tooltip("Total number of nodes in the scene");
        label = createLabel("Total Node count:", tooltip);
        nodeCountText = createValueLabel(tooltip);
        getChildren().addAll(label, nodeCountText);
        standardNodes.addAll(getChildrenUnmodifiable());
    }

    private Label createValueLabel(final Tooltip tooltip) {
        final Label label = createLabel("", tooltip);
        label.getStyleClass().setAll("label", "value-label");
        return label;
    }

    private Label createLabel(final String value, final Tooltip tooltip) {
        final Label label = new Label(value);
        label.getStyleClass().add("value-name");
        if (tooltip != null) {
            label.setTooltip(tooltip);
        }
        return label;
    }

    void updateWindowDetails(final String targetWindow, final String bounds, final boolean focused) {
        if (targetWindow != null) {
            windowTypeLabel.setText(targetWindow + ":");
            if (!focused) {
                updateMousePosition("---");
            }
        }
        stageBoundsText.setText(bounds);
    }

    void updateNodeCount(final int count) {
        nodeCountText.setText(Integer.toString(count));
    }

    void updateSceneDetails(final String size, final int count) {
        sceneSizeText.setText(size);
        updateNodeCount(count);
    }

    void updateMousePosition(final String position) {
        sceneMousePosText.setText(position);
    }

    void setStatusText(final String text) {
        getChildren().clear();
        setAlignment(Pos.TOP_RIGHT);
        statusLabel.setText(text);
        getChildren().add(statusLabel);
        if (clearTimeout != null) {
            clearTimeout.stop();
            clearTimeout = null;
        }
    }

    public void setStatusText(final String text, final long timeout) {
        setStatusText(text);
        
        clearTimeout = new Timeline(new KeyFrame(Duration.millis(timeout), event -> clearStatusText()));
        clearTimeout.play();
    }

    void clearStatusText() {
        getChildren().clear();
        setAlignment(Pos.TOP_LEFT);
        getChildren().addAll(standardNodes);
        clearTimeout = null;
    }

    boolean hasStatus() {
        return getChildren().contains(statusLabel);
    }
}