JxBrowser API provides functionality that allows programmatically send/forward mouse events to the currently loaded web page. The mouse events will be send to the loaded web page as if they were sent due to user actions.(JxBrowser API提供的功能允许以编程方式将鼠标事件发送/转发到当前加载的网页。鼠标事件将被发送到加载的网页，就像它们是由于用户操作而发送的一样。)
The following example demonstrates how to use this functionality:(下面的示例演示如何使用此功能：)
/*
* Copyright (c) 2000-2017 TeamDev Ltd. All rights reserved.
* TeamDev PROPRIETARY and CONFIDENTIAL.
* Use is subject to license terms.
*/
import com.teamdev.jxbrowser.chromium.Browser;
import com.teamdev.jxbrowser.chromium.BrowserKeyEvent.KeyModifiers;
import com.teamdev.jxbrowser.chromium.BrowserKeyEvent.KeyModifiersBuilder;
import com.teamdev.jxbrowser.chromium.BrowserMouseEvent.BrowserMouseEventBuilder;
import com.teamdev.jxbrowser.chromium.BrowserMouseEvent.MouseButtonType;
import com.teamdev.jxbrowser.chromium.Callback;
import com.teamdev.jxbrowser.chromium.swing.BrowserView;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import static com.teamdev.jxbrowser.chromium.BrowserMouseEvent.MouseButtonType.*;
import static com.teamdev.jxbrowser.chromium.BrowserMouseEvent.MouseEventType.*;
import static com.teamdev.jxbrowser.chromium.BrowserMouseEvent.MouseScrollType.WHEEL_BLOCK_SCROLL;
/**
* This sample demonstrates how to create and forward mouse events
* containing scroll parameters, modifiers, and button options to Chromium engine.
*/
public class ForwardMouseEventsSample {
public static void main(String[] args) {
final Browser browser = new Browser();
BrowserView view = new BrowserView(browser);
JButton scrollDown = new JButton("Scroll Down");
scrollDown.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
forwardMouseScrollEvent(browser, -1, 11, 62);
}
});
JButton scrollUp = new JButton("Scroll Up");
scrollUp.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
forwardMouseScrollEvent(browser, 1, 11, 62);
}
});
JButton clickMe = new JButton("Click");
clickMe.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
forwardMouseClickEvent(browser, PRIMARY, 11, 12, 629, 373);
}
});
JPanel actionPane = new JPanel();
actionPane.add(scrollDown);
actionPane.add(scrollUp);
actionPane.add(clickMe);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.add(actionPane, BorderLayout.SOUTH);
frame.add(view, BorderLayout.CENTER);
frame.setSize(600, 300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
Browser.invokeAndWaitFinishLoadingMainFrame(browser, new Callback<Browser>() {
@Override
public void invoke(Browser value) {
browser.loadHTML("<div>" +
"<button onclick=\"alert('Mouse has been clicked.');\">Click Me</button></div>" +
"<textarea autofocus rows='10' cols='30'>" +
"Line 1 \n Line 2 \n Line 3 \n Line 4 \n Line 5 \n " +
"Line 6 \n Line 7 \n Line 8 \n Line 9 \n Line 10 \n " +
"Line 11 \n Line 11 \n Line 12 \n Line 13 \n Line 14 \n " +
"Line 15 \n Line 16 \n Line 17 \n Line 18 \n </textarea>");
}
});
}
private static void forwardMousePressEvent(Browser browser,
MouseButtonType buttonType,
int x,
int y,
int globalX,
int globalY) {
BrowserMouseEventBuilder builder = new BrowserMouseEventBuilder();
builder.setEventType(MOUSE_PRESSED)
.setButtonType(buttonType)
.setX(x)
.setY(y)
.setGlobalX(globalX)
.setGlobalY(globalY)
.setClickCount(1)
.setModifiers(new KeyModifiersBuilder().mouseButton().build());
browser.forwardMouseEvent(builder.build());
}
private static void forwardMouseReleaseEvent(Browser browser,
MouseButtonType buttonType,
int x,
int y,
int globalX,
int globalY) {
BrowserMouseEventBuilder builder = new BrowserMouseEventBuilder();
builder.setEventType(MOUSE_RELEASED)
.setButtonType(buttonType)
.setX(x)
.setY(y)
.setGlobalX(globalX)
.setGlobalY(globalY)
.setClickCount(1)
.setModifiers(KeyModifiers.NO_MODIFIERS);
browser.forwardMouseEvent(builder.build());
}
private static void forwardMouseClickEvent(Browser browser,
MouseButtonType buttonType,
int x,
int y,
int globalX,
int globalY) {
forwardMousePressEvent(browser, buttonType, x, y, globalX, globalY);
forwardMouseReleaseEvent(browser, buttonType, x, y, globalX, globalY);
}
private static void forwardMouseScrollEvent(Browser browser,
int unitsToScroll,
int x,
int y) {
BrowserMouseEventBuilder builder = new BrowserMouseEventBuilder();
builder.setEventType(MOUSE_WHEEL)
.setX(x)
.setY(y)
.setGlobalX(0)
.setGlobalY(0)
.setScrollBarPixelsPerLine(25)
.setScrollType(WHEEL_BLOCK_SCROLL)
.setUnitsToScroll(unitsToScroll);
browser.forwardMouseEvent(builder.build());
}
}