JavaFx WebView-滚动到所需位置
我正在尝试创建一个web视图并向其中添加内容。将在单击按钮时将内容附加到web视图。在这里,我需要通过编程将web视图滚动到所需的位置,例如(0,60)。我尝试使用JavaScript和ScrollBar类的setValue。但一切都没有结果。这是样品JavaFx WebView-滚动到所需位置,java,javafx,javafx-2,scrollbar,Java,Javafx,Javafx 2,Scrollbar,我正在尝试创建一个web视图并向其中添加内容。将在单击按钮时将内容附加到web视图。在这里,我需要通过编程将web视图滚动到所需的位置,例如(0,60)。我尝试使用JavaScript和ScrollBar类的setValue。但一切都没有结果。这是样品 public class FxWebViewSample extends Application { public static void main(String[] args) { launch(args);
public class FxWebViewSample extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
Group root = new Group();
final WebView wView = new WebView();
wView.setId("my_view");
wView.setPrefHeight(200);
wView.setPrefWidth(200);
final WebEngine engine = wView.getEngine();
engine.loadContent("<body contentEditable='true'><div id='content'>Initial Text</div><div id='first'>My first web view in fx</div></body><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><div id='first'>My first web view in fx</div></body></body>");
Button appendbtn = new Button("Append Text to Web View");
TextArea area = new TextArea();
area.setText("My text area");
VBox vBox = new VBox();
vBox.getChildren().addAll(wView, appendbtn);
root.getChildren().add(vBox);
Scene scene = new Scene(root, 300, 300);
primaryStage.setScene(scene);
primaryStage.show();
appendbtn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
/** To append html and text contents to web view */
String webViewContents = (String) engine
.executeScript("document.documentElement.outerHTML");
String appendContent = "<div>Appended html content</div> Appended text content";
engine.loadContent(webViewContents + appendContent);
/**JavaScript to scroll the view*/
//String scrollJsFtn = "var elem = document.getElementById('my_view');var x = 0;var y = 0;while (elem != null) {x += elem.offsetLeft;y += elem.offsetTop;elem = elem.offsetParent;}window.scrollTo(30, 30);";
//engine.executeScript(scrollJsFtn);
Set<Node> scrollBars = wView.lookupAll(".scroll-bar");
for (Node node : scrollBars) {
if (node instanceof ScrollBar) {
ScrollBar sBar = (ScrollBar) node;
sBar.setValue(100.0);
}
}
}
});
}
}
公共类FxWebViewSample扩展应用程序{
公共静态void main(字符串[]args){
发射(args);
}
@凌驾
public void start(Stage primaryStage)引发异常{
组根=新组();
最终WebView wView=新WebView();
setId(“我的视图”);
wView.setPrefHeight(200);
wView.setPrefWidth(200);
final WebEngine=wView.getEngine();
engine.loadContent(“初始文本fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图”);
按钮appendbtn=新按钮(“将文本追加到Web视图”);
TextArea=新建TextArea();
area.setText(“我的文本区域”);
VBox VBox=新的VBox();
vBox.getChildren().addAll(wView,appendbtn);
root.getChildren().add(vBox);
场景=新场景(根,300,300);
初级阶段。场景(场景);
primaryStage.show();
appendbtn.setOnAction(新的EventHandler(){
@凌驾
公共无效句柄(ActionEvent arg0){
/**将html和文本内容附加到web视图的步骤*/
字符串webViewContents=(字符串)引擎
.executeScript(“document.documentElement.outerHTML”);
String appendContent=“追加的html内容追加的文本内容”;
engine.loadContent(webViewContents+appendContent);
/**JavaScript来滚动视图*/
//String scrollJsFtn=“var elem=document.getElementById('my_view');var x=0;var y=0;while(elem!=null){x+=elem.offsetLeft;y+=elem.offsetTop;elem=elem.offsetParent;}window.scrollTo(30);”;
//engine.executeScript(scrollJsFtn);
设置滚动条=wView.lookupAll(“.scrollbar”);
用于(节点:滚动条){
if(滚动条的节点实例){
滚动条sBar=(滚动条)节点;
sBar设定值(100.0);
}
}
}
});
}
}
有没有一种方法可以通过编程方式设置web视图的滚动条位置?解决这个问题。使用JavaScript可以通过编程方式滚动web视图
public class FxWebViewSample extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
Group root = new Group();
final WebView wView = new WebView();
wView.setId("my_view");
wView.setPrefHeight(200);
wView.setPrefWidth(200);
final WebEngine engine = wView.getEngine();
engine.setJavaScriptEnabled(true);
engine.loadContent("<body contentEditable='true'><div id='content'>Initial Text</div><div id='first'>My first web view in fx</div></body><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><span id='second'>My first web view in fx</span><div id='first'>My first web view in fx</div></body></body>");
Button appendbtn = new Button("Append Text to Web View");
TextArea area = new TextArea();
area.setText("My text area");
VBox vBox = new VBox();
vBox.getChildren().addAll(wView, appendbtn);
root.getChildren().add(vBox);
Scene scene = new Scene(root, 300, 300);
primaryStage.setScene(scene);
primaryStage.show();
appendbtn.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
/** To append html and text contents to web view */
String webViewContents = (String) engine
.executeScript("document.documentElement.outerHTML");
String appendContent = "<div id='append'>Appended html content</div> Appended text content";
StringBuilder scrollHtml = scrollWebView(0, 50);
engine.loadContent(scrollHtml + webViewContents + appendContent);
}
});
}
public static StringBuilder scrollWebView(int xPos, int yPos) {
StringBuilder script = new StringBuilder().append("<html>");
script.append("<head>");
script.append(" <script language=\"javascript\" type=\"text/javascript\">");
script.append(" function toBottom(){");
script.append(" window.scrollTo(" + xPos + ", " + yPos + ");");
script.append(" }");
script.append(" </script>");
script.append("</head>");
script.append("<body onload='toBottom()'>");
return script;
}
}
公共类FxWebViewSample扩展应用程序{
公共静态void main(字符串[]args){
发射(args);
}
@凌驾
public void start(Stage primaryStage)引发异常{
组根=新组();
最终WebView wView=新WebView();
setId(“我的视图”);
wView.setPrefHeight(200);
wView.setPrefWidth(200);
final WebEngine=wView.getEngine();
engine.setJavaScriptEnabled(true);
engine.loadContent(“初始文本fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图fxMy第一个web视图”);
按钮appendbtn=新按钮(“将文本追加到Web视图”);
TextArea=新建TextArea();
area.setText(“我的文本区域”);
VBox VBox=新的VBox();
vBox.getChildren().addAll(wView,appendbtn);
root.getChildren().add(vBox);
场景=新场景(根,300,300);
初级阶段。场景(场景);
primaryStage.show();
appendbtn.setOnAction(新的EventHandler(){
@凌驾
公共无效句柄(ActionEvent arg0){
/**将html和文本内容附加到web视图的步骤*/
字符串webViewContents=(字符串)引擎
.executeScript(“document.documentElement.outerHTML”);
String appendContent=“追加的html内容追加的文本内容”;
StringBuilder scrollHtml=scrollWebView(0,50);
loadContent(scrollHtml+webViewContents+appendContent);
}
});
}
公共静态StringBuilder scrollWebView(int xPos、int YPO){
StringBuilder脚本=新建StringBuilder().append(“”);
脚本。追加(“”);
脚本。追加(“”);
append(“函数toBottom(){”);
script.append(“window.scrollTo”(“+xPos+”,“+yPos+”);”;
script.append(“}”);
脚本。追加(“”);
脚本。追加(“”);
脚本。追加(“”);
返回脚本;
}
}