JavaFX webview,获取文档高度 [英] JavaFX webview, get document height

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问题描述

如何在JavaFx中获取webview控件的文档高度?

解决方案

您可以获取文档的高度使用以下调用显示在WebView中:

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






一个完整的应用程序来演示通话的用法:

  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;
$ b $ 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 ();
double height = heightText = Double.valueOf(heightText.replace(px,));

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


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






回答: Oracle JavaFX论坛WebView配置线程






相关问题基于Java API的相关功能的跟踪器请求:

< a href =https://javafx-jira.kenai.com/browse/RT-25005 =noreferrer> RT-25005自动优先选择WebView大小。

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

解决方案

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.

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