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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
*/
package com.sun.javafx.webkit;
import static com.sun.glass.ui.Clipboard.DRAG_IMAGE;
import static com.sun.glass.ui.Clipboard.DRAG_IMAGE_OFFSET;
import static com.sun.glass.ui.Clipboard.IE_URL_SHORTCUT_FILENAME;
import static javafx.scene.web.WebEvent.ALERT;
import static javafx.scene.web.WebEvent.RESIZED;
import static javafx.scene.web.WebEvent.STATUS_CHANGED;
import static javafx.scene.web.WebEvent.VISIBILITY_CHANGED;
import com.sun.javafx.tk.Toolkit;
import com.sun.webkit.UIClient;
import com.sun.webkit.WebPage;
import com.sun.webkit.graphics.WCImage;
import com.sun.webkit.graphics.WCRectangle;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.security.AccessControlContext;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Arrays;
import java.util.List;
import javafx.event.EventHandler;
import javafx.geometry.Rectangle2D;
import javafx.scene.image.Image;
import javafx.scene.input.ClipboardContent;
import javafx.scene.input.DataFormat;
import javafx.scene.input.Dragboard;
import javafx.scene.input.TransferMode;
import javafx.scene.web.PopupFeatures;
import javafx.scene.web.PromptData;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebEvent;
import javafx.scene.web.WebView;
import javafx.stage.FileChooser;
import javafx.stage.Window;
import javax.imageio.ImageIO;
public final class UIClientImpl implements UIClient {
private final Accessor accessor;
private FileChooser chooser;
public UIClientImpl(Accessor accessor) {
this.accessor = accessor;
}
private WebEngine getWebEngine() {
return accessor.getEngine();
}
private AccessControlContext getAccessContext() {
return accessor.getPage().getAccessControlContext();
}
@Override public WebPage createPage(
boolean menu, boolean status, boolean toolbar, boolean resizable) {
final WebEngine w = getWebEngine();
if (w != null && w.getCreatePopupHandler() != null) {
final PopupFeatures pf =
new PopupFeatures(menu, status, toolbar, resizable);
WebEngine popup = AccessController.doPrivileged(
new PrivilegedAction() {
@Override public WebEngine run() {
return w.getCreatePopupHandler().call(pf);
}
}, getAccessContext());
return Accessor.getPageFor(popup);
}
return null;
}
private void dispatchWebEvent(final EventHandler handler, final WebEvent ev) {
AccessController.doPrivileged(new PrivilegedAction() {
@Override public Void run() {
handler.handle(ev);
return null;
}
}, getAccessContext());
}
private void notifyVisibilityChanged(boolean visible) {
WebEngine w = getWebEngine();
if (w != null && w.getOnVisibilityChanged() != null) {
dispatchWebEvent(
w.getOnVisibilityChanged(),
new WebEvent(w, VISIBILITY_CHANGED, visible));
}
}
@Override public void closePage() {
notifyVisibilityChanged(false);
}
@Override public void showView() {
notifyVisibilityChanged(true);
}
@Override public WCRectangle getViewBounds() {
WebView view = accessor.getView();
Window win = null;
if (view != null &&
view.getScene() != null &&
(win = view.getScene().getWindow()) != null)
{
return new WCRectangle(
(float) win.getX(), (float) win.getY(),
(float) win.getWidth(), (float) win.getHeight());
}
return null;
}
@Override public void setViewBounds(WCRectangle r) {
WebEngine w = getWebEngine();
if (w != null && w.getOnResized() != null) {
dispatchWebEvent(
w.getOnResized(),
new WebEvent(w, RESIZED,
new Rectangle2D(r.getX(), r.getY(), r.getWidth(), r.getHeight())));
}
}
@Override public void setStatusbarText(String text) {
WebEngine w = getWebEngine();
if (w != null && w.getOnStatusChanged() != null) {
dispatchWebEvent(
w.getOnStatusChanged(),
new WebEvent(w, STATUS_CHANGED, text));
}
}
@Override public void alert(String text) {
WebEngine w = getWebEngine();
if (w != null && w.getOnAlert() != null) {
dispatchWebEvent(
w.getOnAlert(),
new WebEvent(w, ALERT, text));
}
}
@Override public boolean confirm(final String text) {
final WebEngine w = getWebEngine();
if (w != null && w.getConfirmHandler() != null) {
return AccessController.doPrivileged(
new PrivilegedAction() {
@Override public Boolean run() {
return w.getConfirmHandler().call(text);
}
}, getAccessContext());
}
return false;
}
@Override public String prompt(String text, String defaultValue) {
final WebEngine w = getWebEngine();
if (w != null && w.getPromptHandler() != null) {
final PromptData data = new PromptData(text, defaultValue);
return AccessController.doPrivileged(
new PrivilegedAction() {
@Override public String run() {
return w.getPromptHandler().call(data);
}
}, getAccessContext());
}
return "";
}
@Override public String[] chooseFile(String initialFileName, boolean multiple) {
// get the toplevel window
Window win = null;
WebView view = accessor.getView();
if (view != null && view.getScene() != null) {
win = view.getScene().getWindow();
}
if (chooser == null) {
chooser = new FileChooser();
}
// set initial directory
if (initialFileName != null) {
File dir = new File(initialFileName);
while (dir != null && !dir.isDirectory()) {
dir = dir.getParentFile();
}
chooser.setInitialDirectory(dir);
}
if (multiple) {
List files = chooser.showOpenMultipleDialog(win);
if (files != null) {
int n = files.size();
String[] result = new String[n];
for (int i = 0; i < n; i++) {
result[i] = files.get(i).getAbsolutePath();
}
return result;
}
return null;
} else {
File f = chooser.showOpenDialog(win);
return f != null
? new String[] { f.getAbsolutePath() }
: null;
}
}
@Override public void print() {
}
private ClipboardContent content;
private static DataFormat getDataFormat(String mimeType) {
synchronized (DataFormat.class) {
DataFormat ret = DataFormat.lookupMimeType(mimeType);
if (ret == null) {
ret = new DataFormat(mimeType);
}
return ret;
}
}
//copy from com.sun.glass.ui.Clipboard
private final static DataFormat DF_DRAG_IMAGE = getDataFormat(DRAG_IMAGE);
private final static DataFormat DF_DRAG_IMAGE_OFFSET = getDataFormat(DRAG_IMAGE_OFFSET);
@Override public void startDrag(WCImage image,
int imageOffsetX, int imageOffsetY,
int eventPosX, int eventPosY,
String[] mimeTypes, Object[] values
){
content = new ClipboardContent();
for (int i = 0; i < mimeTypes.length; ++i) if (values[i] != null) {
try {
content.put(getDataFormat(mimeTypes[i]),
IE_URL_SHORTCUT_FILENAME.equals(mimeTypes[i])
? (Object)ByteBuffer.wrap(((String)values[i]).getBytes("UTF-16LE"))
: (Object)values[i]);
} catch (UnsupportedEncodingException ex) {
//never happens
}
}
if (image != null) {
ByteBuffer dragImageOffset = ByteBuffer.allocate(8);
dragImageOffset.rewind();
dragImageOffset.putInt(imageOffsetX);
dragImageOffset.putInt(imageOffsetY);
content.put(DF_DRAG_IMAGE_OFFSET, dragImageOffset);
int w = image.getWidth();
int h = image.getHeight();
ByteBuffer pixels = image.getPixelBuffer();
ByteBuffer dragImage = ByteBuffer.allocate(8 + w*h*4);
dragImage.putInt(w);
dragImage.putInt(h);
dragImage.put(pixels);
content.put(DF_DRAG_IMAGE, dragImage);
//The image is prepared synchronously, that is sad.
//Image need to be created by target request only.
//QuantumClipboard.putContent have to be rewritten in Glass manner
//with postponed data requests (DelayedCallback data object).
Object platformImage = image.getPlatformImage();
if (platformImage != null) {
try {
File temp = File.createTempFile("jfx", ".png");
temp.deleteOnExit();
ImageIO.write(
toBufferedImage(Image.impl_fromPlatformImage(
Toolkit.getToolkit().loadPlatformImage(
platformImage
)
)),
"png",
temp);
content.put(DataFormat.FILES, Arrays.asList(temp));
} catch (IOException e) {
//That is ok. It was just an attempt.
//e.printStackTrace();
}
}
}
}
@Override public void confirmStartDrag() {
WebView view = accessor.getView();
if (view != null && content != null) {
//TODO: implement native support for Drag Source actions.
Dragboard db = view.startDragAndDrop(TransferMode.ANY);
db.setContent(content);
}
content = null;
}
@Override public boolean isDragConfirmed() {
return accessor.getView() != null && content != null;
}
// Method to implement the following via reflection:
// SwingFXUtils.fromFXImage(img, null)
public static BufferedImage toBufferedImage(Image img) {
try {
Class swingFXUtilsCls = Class.forName("javafx.embed.swing.SwingFXUtils");
Method m_fromFXImage = swingFXUtilsCls.getMethod("fromFXImage",
Image.class, BufferedImage.class);
Object bimg = m_fromFXImage.invoke(null, img, null);
return (BufferedImage)bimg;
} catch (Exception ex) {
ex.printStackTrace(System.err);
}
// return null upon any exception
return null;
}
}