1 /*
2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.javafx.webkit;
27
28 import static com.sun.glass.ui.Clipboard.DRAG_IMAGE;
29 import static com.sun.glass.ui.Clipboard.DRAG_IMAGE_OFFSET;
30 import static com.sun.glass.ui.Clipboard.IE_URL_SHORTCUT_FILENAME;
31 import static javafx.scene.web.WebEvent.ALERT;
32 import static javafx.scene.web.WebEvent.RESIZED;
33 import static javafx.scene.web.WebEvent.STATUS_CHANGED;
34 import static javafx.scene.web.WebEvent.VISIBILITY_CHANGED;
35
36 import com.sun.javafx.tk.Toolkit;
37 import com.sun.webkit.UIClient;
38 import com.sun.webkit.WebPage;
39 import com.sun.webkit.graphics.WCImage;
40 import com.sun.webkit.graphics.WCRectangle;
41 import java.awt.image.BufferedImage;
42 import java.io.File;
43 import java.io.IOException;
44 import java.io.UnsupportedEncodingException;
45 import java.lang.reflect.Method;
46 import java.nio.ByteBuffer;
47 import java.security.AccessControlContext;
48 import java.security.AccessController;
49 import java.security.PrivilegedAction;
50 import java.util.Arrays;
51 import java.util.List;
52 import javafx.event.EventHandler;
53 import javafx.geometry.Rectangle2D;
54 import javafx.scene.image.Image;
55 import javafx.scene.input.ClipboardContent;
56 import javafx.scene.input.DataFormat;
57 import javafx.scene.input.Dragboard;
58 import javafx.scene.input.TransferMode;
59 import javafx.scene.web.PopupFeatures;
60 import javafx.scene.web.PromptData;
61 import javafx.scene.web.WebEngine;
62 import javafx.scene.web.WebEvent;
63 import javafx.scene.web.WebView;
64 import javafx.stage.FileChooser;
65 import javafx.stage.Window;
66 import javax.imageio.ImageIO;
67
68 public final class UIClientImpl implements UIClient {
69 private final Accessor accessor;
70 private FileChooser chooser;
71
72 public UIClientImpl(Accessor accessor) {
73 this.accessor = accessor;
74 }
75
76 private WebEngine getWebEngine() {
77 return accessor.getEngine();
78 }
79
80 private AccessControlContext getAccessContext() {
81 return accessor.getPage().getAccessControlContext();
82 }
83
84 @Override public WebPage createPage(
85 boolean menu, boolean status, boolean toolbar, boolean resizable) {
86 final WebEngine w = getWebEngine();
87 if (w != null && w.getCreatePopupHandler() != null) {
88 final PopupFeatures pf =
89 new PopupFeatures(menu, status, toolbar, resizable);
90 WebEngine popup = AccessController.doPrivileged(
91 (PrivilegedAction<WebEngine>) () -> w.getCreatePopupHandler().call(pf), getAccessContext());
92 return Accessor.getPageFor(popup);
93 }
94 return null;
95 }
96
97 private void dispatchWebEvent(final EventHandler handler, final WebEvent ev) {
98 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
99 handler.handle(ev);
100 return null;
101 }, getAccessContext());
102 }
103
104 private void notifyVisibilityChanged(boolean visible) {
105 WebEngine w = getWebEngine();
106 if (w != null && w.getOnVisibilityChanged() != null) {
107 dispatchWebEvent(
108 w.getOnVisibilityChanged(),
109 new WebEvent<Boolean>(w, VISIBILITY_CHANGED, visible));
110 }
111 }
112
113 @Override public void closePage() {
114 notifyVisibilityChanged(false);
115 }
116
117 @Override public void showView() {
118 notifyVisibilityChanged(true);
119 }
120
121 @Override public WCRectangle getViewBounds() {
122 WebView view = accessor.getView();
123 Window win = null;
124 if (view != null &&
125 view.getScene() != null &&
126 (win = view.getScene().getWindow()) != null)
127 {
128 return new WCRectangle(
129 (float) win.getX(), (float) win.getY(),
130 (float) win.getWidth(), (float) win.getHeight());
131 }
132 return null;
133 }
134
135 @Override public void setViewBounds(WCRectangle r) {
136 WebEngine w = getWebEngine();
137 if (w != null && w.getOnResized() != null) {
138 dispatchWebEvent(
139 w.getOnResized(),
140 new WebEvent<Rectangle2D>(w, RESIZED,
141 new Rectangle2D(r.getX(), r.getY(), r.getWidth(), r.getHeight())));
142 }
143 }
144
145 @Override public void setStatusbarText(String text) {
146 WebEngine w = getWebEngine();
147 if (w != null && w.getOnStatusChanged() != null) {
148 dispatchWebEvent(
149 w.getOnStatusChanged(),
150 new WebEvent<String>(w, STATUS_CHANGED, text));
151 }
152 }
153
154 @Override public void alert(String text) {
155 WebEngine w = getWebEngine();
156 if (w != null && w.getOnAlert() != null) {
157 dispatchWebEvent(
158 w.getOnAlert(),
159 new WebEvent<String>(w, ALERT, text));
160 }
161 }
162
163 @Override public boolean confirm(final String text) {
164 final WebEngine w = getWebEngine();
165 if (w != null && w.getConfirmHandler() != null) {
166 return AccessController.doPrivileged(
167 (PrivilegedAction<Boolean>) () -> w.getConfirmHandler().call(text), getAccessContext());
168 }
169 return false;
170 }
171
172 @Override public String prompt(String text, String defaultValue) {
173 final WebEngine w = getWebEngine();
174 if (w != null && w.getPromptHandler() != null) {
175 final PromptData data = new PromptData(text, defaultValue);
176 return AccessController.doPrivileged(
177 (PrivilegedAction<String>) () -> w.getPromptHandler().call(data), getAccessContext());
178 }
179 return "";
180 }
181
182 @Override public String[] chooseFile(String initialFileName, boolean multiple) {
183 // get the toplevel window
184 Window win = null;
185 WebView view = accessor.getView();
186 if (view != null && view.getScene() != null) {
187 win = view.getScene().getWindow();
188 }
189
190 if (chooser == null) {
191 chooser = new FileChooser();
192 }
193
194 // set initial directory
195 if (initialFileName != null) {
196 File dir = new File(initialFileName);
197 while (dir != null && !dir.isDirectory()) {
198 dir = dir.getParentFile();
199 }
200 chooser.setInitialDirectory(dir);
201 }
202
203 if (multiple) {
204 List<File> files = chooser.showOpenMultipleDialog(win);
205 if (files != null) {
206 int n = files.size();
207 String[] result = new String[n];
208 for (int i = 0; i < n; i++) {
209 result[i] = files.get(i).getAbsolutePath();
210 }
211 return result;
212 }
213 return null;
214 } else {
215 File f = chooser.showOpenDialog(win);
216 return f != null
217 ? new String[] { f.getAbsolutePath() }
218 : null;
219 }
220 }
221
222 @Override public void print() {
223 }
224
225 private ClipboardContent content;
226 private static DataFormat getDataFormat(String mimeType) {
227 synchronized (DataFormat.class) {
228 DataFormat ret = DataFormat.lookupMimeType(mimeType);
229 if (ret == null) {
230 ret = new DataFormat(mimeType);
231 }
232 return ret;
233 }
234 }
235
236 //copy from com.sun.glass.ui.Clipboard
237 private final static DataFormat DF_DRAG_IMAGE = getDataFormat(DRAG_IMAGE);
238 private final static DataFormat DF_DRAG_IMAGE_OFFSET = getDataFormat(DRAG_IMAGE_OFFSET);
239
240 @Override public void startDrag(WCImage image,
241 int imageOffsetX, int imageOffsetY,
242 int eventPosX, int eventPosY,
243 String[] mimeTypes, Object[] values
244 ){
245 content = new ClipboardContent();
246 for (int i = 0; i < mimeTypes.length; ++i) if (values[i] != null) {
247 try {
248 content.put(getDataFormat(mimeTypes[i]),
249 IE_URL_SHORTCUT_FILENAME.equals(mimeTypes[i])
250 ? (Object)ByteBuffer.wrap(((String)values[i]).getBytes("UTF-16LE"))
251 : (Object)values[i]);
252 } catch (UnsupportedEncodingException ex) {
253 //never happens
254 }
255 }
256 if (image != null) {
257 ByteBuffer dragImageOffset = ByteBuffer.allocate(8);
258 dragImageOffset.rewind();
259 dragImageOffset.putInt(imageOffsetX);
260 dragImageOffset.putInt(imageOffsetY);
261 content.put(DF_DRAG_IMAGE_OFFSET, dragImageOffset);
262
263 int w = image.getWidth();
264 int h = image.getHeight();
265 ByteBuffer pixels = image.getPixelBuffer();
266
267 ByteBuffer dragImage = ByteBuffer.allocate(8 + w*h*4);
268 dragImage.putInt(w);
269 dragImage.putInt(h);
270 dragImage.put(pixels);
271 content.put(DF_DRAG_IMAGE, dragImage);
272
273 //The image is prepared synchronously, that is sad.
274 //Image need to be created by target request only.
275 //QuantumClipboard.putContent have to be rewritten in Glass manner
276 //with postponed data requests (DelayedCallback data object).
277 Object platformImage = image.getPlatformImage();
278 if (platformImage != null) {
279 try {
280 File temp = File.createTempFile("jfx", ".png");
281 temp.deleteOnExit();
282 ImageIO.write(
283 toBufferedImage(Image.impl_fromPlatformImage(
284 Toolkit.getToolkit().loadPlatformImage(
285 platformImage
286 )
287 )),
288 "png",
289 temp);
290 content.put(DataFormat.FILES, Arrays.asList(temp));
291 } catch (IOException | SecurityException e) {
292 //That is ok. It was just an attempt.
293 //e.printStackTrace();
294 }
295 }
296 }
297 }
298
299 @Override public void confirmStartDrag() {
300 WebView view = accessor.getView();
301 if (view != null && content != null) {
302 //TODO: implement native support for Drag Source actions.
303 Dragboard db = view.startDragAndDrop(TransferMode.ANY);
304 db.setContent(content);
305 }
306 content = null;
307 }
308
309 @Override public boolean isDragConfirmed() {
310 return accessor.getView() != null && content != null;
311 }
312
313 // Method to implement the following via reflection:
314 // SwingFXUtils.fromFXImage(img, null)
315 public static BufferedImage toBufferedImage(Image img) {
316 try {
317 Class swingFXUtilsCls = Class.forName("javafx.embed.swing.SwingFXUtils");
318 Method m_fromFXImage = swingFXUtilsCls.getMethod("fromFXImage",
319 Image.class, BufferedImage.class);
320 Object bimg = m_fromFXImage.invoke(null, img, null);
321 return (BufferedImage)bimg;
322 } catch (Exception ex) {
323 ex.printStackTrace(System.err);
324 }
325
326 // return null upon any exception
327 return null;
328 }
329
330 }