JavaFX webview, get document height

Question

How can I get the document height for a webview control in JavaFx?

Java and Javascript are quite different. Also, please expand your question, perhaps with what you have tried. — Lee Taylor, Apr 01 '13 at 00:50
I have an webview control and I want to set it's height relative at the document height. — John Smith, Apr 01 '13 at 00:54
Please update your question by clicking edit. Your comment merely rearranges the words in your original question! — Lee Taylor, Apr 01 '13 at 00:57

score 5 · Accepted Answer · answered Apr 01 '13 at 22:39

You can get the height of a document displayed in a WebView using the following call:

webView.getEngine().executeScript(
    "window.getComputedStyle(document.body, null).getPropertyValue('height')"
);

A complete app to demonstrate the call usage:

import javafx.application.Application;
import javafx.beans.value.*;
import javafx.scene.Scene;
import javafx.scene.web.*;
import javafx.stage.Stage;
import org.w3c.dom.Document;

public class WebViewHeight extends Application {
  @Override public void start(Stage primaryStage) {
    final WebView webView = new WebView();
    final WebEngine engine = webView.getEngine();
    engine.load("http://docs.oracle.com/javafx/2/get_started/animation.htm");
    engine.documentProperty().addListener(new ChangeListener<Document>() {
      @Override public void changed(ObservableValue<? extends Document> prop, Document oldDoc, Document newDoc) {
        String heightText = webView.getEngine().executeScript(
          "window.getComputedStyle(document.body, null).getPropertyValue('height')"
        ).toString();
        double height = Double.valueOf(heightText.replace("px", ""));    

        System.out.println(height);
      }
    });
    primaryStage.setScene(new Scene(webView));
    primaryStage.show();
  }

  public static void main(String[] args) { launch(args); }
}

Source of the above answer: Oracle JavaFX forums WebView configuration thread.

Related issue tracker request for a Java based API for a related feature:

RT-25005 Automatic preferred sizing of WebView.

It works, however the result is not true. I measured via pixel line, the height was about 480px and the code returned 414px. — , Jun 05 '15 at 05:54
Thanks for your anser. This is a bit late reply. Your example is running. However I have a webview, which is embedded in an `TableCell`. Here the result is always 0 px (Close to: https://stackoverflow.com/questions/22334983/java-fx-tableview-display-simple-html/22335276#22335276) any idea on how to fix this? — BerndGit, Mar 17 '17 at 12:13
Kindly see: https://stackoverflow.com/questions/42856471/workaround-for-rt-25005-automatic-preferred-sizing-of-webview for more specific question including running example. — BerndGit, Mar 17 '17 at 14:24

score 0 · Answer 2 · answered Mar 18 '16 at 14:53

0

This is what you're looking for:

Double.parseDouble(webView.getEngine().executeScript("document.height").toString())

answered Mar 18 '16 at 14:53

Someone

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JavaFX webview, get document height

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