1 /*******************************************************************************

     2  * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3  * All rights reserved. This program and the accompanying materials 

     4  * are made available under the terms of the Eclipse Public License v1.0

     5  * which accompanies this distribution, and is available at

     6  * http://www.eclipse.org/legal/epl-v10.html

     7  * 

     8  * Contributors:

     9  *     Nokia Corporation - QT implementation

    10  *******************************************************************************/

    11 package org.eclipse.swt.browser;

    12 

    13 import org.eclipse.swt.SWT;

    14 import org.eclipse.swt.internal.qt.OS;

    15 import org.eclipse.swt.widgets.Composite;

    16 import org.eclipse.swt.widgets.Display;

    17 import org.eclipse.swt.widgets.Event;

    18 import org.eclipse.swt.widgets.Internal_PackageSupport;

    19 import org.eclipse.swt.widgets.Listener;

    20 

    21 class QtWebKit extends WebBrowser {

    22     

    23     private static final String ADD_WIDGET_KEY = "org.eclipse.swt.internal.addWidget";

    24     private static final String REMOVE_WIDGET_KEY = "org.eclipse.swt.internal.removeWidget";

    25     private static final String SET_CANVAS_STATE_KEY = "org.eclipse.swt.internal.setCanvasState";

    26     private static final String SET_NO_TRAVERSE_STATE_KEY = "org.eclipse.swt.internal.setNoTraverseState";

    27     private static final String SET_NO_KEY_PROPAGATE_STATE_KEY = "org.eclipse.swt.internal.setNoKeyPropagateState";

    28     private static final String SET_NO_MOUSE_PROPAGATE_STATE_KEY = "org.eclipse.swt.internal.setNoMousePropagateState";

    29     private static final String SET_EMBEDDED_SCROLLBARS_STATE_KEY = "org.eclipse.swt.internal.setEmbeddedScrollbarsState";

    30     private boolean ignoreDispose = false;

    31     private int webViewHandle;

    32 

    33 /**

    34  * @see WebBrowser

    35  */

    36 public void create(Composite parent, int style) {

    37     

    38     // At this point, browser.handle is the view port of QScrollArea, set by Composite

    39     int scrollAreaHandle = Internal_PackageSupport.topHandle(browser);

    40     int viewPortHandle = Internal_PackageSupport.handle(browser);

    41     webViewHandle = OS.QWebView_new();

    42     OS.QWidget_setParent(webViewHandle, scrollAreaHandle);

    43     

    44     int layout = OS.QVBoxLayout_new(0);

    45     OS.QLayout_setContentsMargins(layout, 0, 0, 0, 0);

    46     OS.QLayout_setSpacing(layout, 0);

    47     OS.QLayout_addWidget(layout, webViewHandle);

    48     OS.QWidget_setLayout(scrollAreaHandle, layout);

    49     OS.QWidget_setVisible(webViewHandle, true);

    50     OS.QLayout_activate(layout);

    51     OS.QLayout_update(layout);

    52     

    53     Display display = browser.getDisplay();

    54     display.setData(ADD_WIDGET_KEY, new Object[] {new Integer(webViewHandle), browser});

    55     Internal_PackageSupport.setHandle(browser, webViewHandle);

    56     

    57     // Just in case focus ends up in the browser "internal" parents

    58     OS.QWidget_setFocusProxy(scrollAreaHandle, webViewHandle);

    59     OS.QWidget_setFocusProxy(viewPortHandle, webViewHandle);

    60     

    61     Listener listener = new Listener() {

    62         public void handleEvent(Event e) {

    63             switch (e.type) {

    64                 case SWT.Dispose: {

    65                     if (ignoreDispose) {

    66                         ignoreDispose = false;

    67                         break;

    68                     }

    69                     ignoreDispose = true;

    70                     browser.notifyListeners (e.type, e);

    71                     e.type = SWT.NONE;

    72                     e.display.setData(REMOVE_WIDGET_KEY, new Object[] {new Integer(webViewHandle)});

    73                     break;

    74                 }

    75             }

    76         }

    77     };

    78     browser.addListener(SWT.Dispose, listener);

    79     

    80     browser.setData(SET_CANVAS_STATE_KEY, new Boolean(false));

    81     browser.setData(SET_NO_TRAVERSE_STATE_KEY, new Boolean(true));

    82     browser.setData(SET_NO_KEY_PROPAGATE_STATE_KEY, new Boolean(true));

    83     browser.setData(SET_NO_MOUSE_PROPAGATE_STATE_KEY, new Boolean(true));

    84     browser.setData(SET_EMBEDDED_SCROLLBARS_STATE_KEY, new Boolean(true));

    85     

    86     int handler1 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_LOADFINISHED);

    87     OS.QObject_connectOrThrow(webViewHandle, "loadFinished(bool)", 

    88         handler1, "widgetSignal(bool)", OS.QT_AUTOCONNECTION);

    89     int handler2 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_LOADPROGRESS);

    90     OS.QObject_connectOrThrow(webViewHandle, "loadProgress(int)", 

    91         handler2, "widgetSignal(int)", OS.QT_AUTOCONNECTION);

    92     int handler3 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_LOADSTARTED);

    93     OS.QObject_connectOrThrow(webViewHandle, "loadStarted()", 

    94         handler3, "widgetSignal()", OS.QT_AUTOCONNECTION);

    95     int handler4 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_STATUSBARMESSAGE);

    96     OS.QObject_connectOrThrow(webViewHandle, "statusBarMessage(const QString&)", 

    97         handler4, "widgetSignal(const QString&)", OS.QT_AUTOCONNECTION);

    98     int handler5 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_TITLECHANGED);

    99     OS.QObject_connectOrThrow(webViewHandle, "titleChanged(const QString&)", 

   100         handler5, "widgetSignal(const QString&)", OS.QT_AUTOCONNECTION);

   101     int handler6 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_URLCHANGED);

   102     OS.QObject_connectOrThrow(webViewHandle, "urlChanged(const QUrl&)", 

   103         handler6, "widgetSignal(const QUrl&)", OS.QT_AUTOCONNECTION);

   104     int handler7 = OS.SignalHandler_new(webViewHandle, this, OS.QSIGNAL_WEBVIEW_LINKCLICKED);

   105     OS.QObject_connectOrThrow(webViewHandle, "linkClicked(const QUrl&)", 

   106         handler7, "widgetSignal(const QUrl&)", OS.QT_AUTOCONNECTION);

   107 }

   108 

   109 /**

   110  * @see WebBrowser

   111  */

   112 public boolean back() {

   113     if (OS.QWebView_swt_canGoBack(webViewHandle)) {

   114         if (sendLocationEventChanging((int)System.currentTimeMillis(), 

   115             OS.QWebView_swt_backUrl(webViewHandle))) {

   116             OS.QWebView_back(webViewHandle);

   117             return true;

   118         }

   119     }

   120     return false;

   121 }

   122 

   123 /**

   124  * @see WebBrowser

   125  */

   126 public boolean execute(String script) {

   127     return OS.QWebView_swt_evaluateJavaScript(webViewHandle, script);

   128 }

   129 

   130 /**

   131  * @see WebBrowser

   132  */

   133 public boolean forward() {

   134     if (OS.QWebView_swt_canGoForward(webViewHandle)) {

   135         if (sendLocationEventChanging((int)System.currentTimeMillis(), 

   136             OS.QWebView_swt_forwardUrl(webViewHandle))) {

   137             OS.QWebView_forward(webViewHandle);

   138             return true;

   139         }

   140     }

   141     return false;

   142 }

   143 

   144 /**

   145  * @see WebBrowser

   146  */

   147 public String getBrowserType() {

   148     return "qtwebkit";

   149 }

   150 

   151 /**

   152  * @see WebBrowser

   153  */

   154 public String getText() { // Not eSWT API

   155     return null;

   156 }

   157 

   158 /**

   159  * @see WebBrowser

   160  */

   161 public String getUrl() {

   162     return OS.QWebView_url(webViewHandle);

   163 }

   164 

   165 /**

   166  * @see WebBrowser

   167  */

   168 public boolean isBackEnabled() {

   169     return OS.QWebView_swt_canGoBack(webViewHandle);

   170 }

   171 

   172 /**

   173  * @see WebBrowser

   174  */

   175 public boolean isForwardEnabled() {

   176     return OS.QWebView_swt_canGoForward(webViewHandle);

   177 }

   178 

   179 /**

   180  * @see WebBrowser

   181  */

   182 public void refresh() {

   183     if (sendLocationEventChanging((int)System.currentTimeMillis(), 

   184         OS.QWebView_url(webViewHandle))) {

   185         OS.QWebView_reload(webViewHandle);

   186     }

   187 }

   188 

   189 /**

   190  * @see WebBrowser

   191  */

   192 public boolean setText(String html) {

   193     if (sendLocationEventChanging((int)System.currentTimeMillis(), "about:blank")) {

   194         OS.QWebView_setHtml(webViewHandle, html);

   195         return true;

   196     }

   197     else {

   198         return false;

   199     }

   200 }

   201 

   202 /**

   203  * @see WebBrowser

   204  */

   205 public boolean setUrl(String url) {

   206     if (sendLocationEventChanging((int)System.currentTimeMillis(), url)) {

   207         OS.QWebView_setUrl(webViewHandle, url);

   208         return true;

   209     }

   210     else {

   211         return false;

   212     }

   213 }

   214 

   215 /**

   216  * @see WebBrowser

   217  */

   218 public void stop() {

   219     OS.QWebView_stop(webViewHandle);

   220 }

   221 

   222 final boolean eventProcess( int widgetHandle, int eventType, int time, 

   223     int arg1, int arg2, int arg3, int arg4, int arg5, String arg6 ){

   224     if (browser.isDisposed()) {

   225         return false;

   226     }

   227     

   228     if (widgetHandle != webViewHandle) {

   229         return false;

   230     }

   231     

   232     switch (eventType) {

   233     case OS.QSIGNAL_WEBVIEW_LOADFINISHED:

   234         sendProgressEventCompleted(time);

   235         break;

   236     case OS.QSIGNAL_WEBVIEW_LOADPROGRESS:

   237         sendProgressEventChanged(time, arg1);

   238         break;

   239     case OS.QSIGNAL_WEBVIEW_LOADSTARTED:

   240         sendProgressEventChanged(time, 0);

   241         break;

   242     case OS.QSIGNAL_WEBVIEW_LINKCLICKED:

   243         sendLocationEventChanging(time, arg6);

   244         break;

   245     case OS.QSIGNAL_WEBVIEW_STATUSBARMESSAGE:

   246         sendStatusTextEventChanged(time, arg6);

   247         break;

   248     case OS.QSIGNAL_WEBVIEW_TITLECHANGED:

   249         sendTitleEventChanged(time, arg6);

   250         break;

   251     case OS.QSIGNAL_WEBVIEW_URLCHANGED:

   252         sendLocationEventChanged(time, arg6);

   253         break;

   254     default:

   255         break;

   256     }

   257     

   258     return false;

   259 }

   260 

   261 private void sendProgressEventChanged(int time, int current) {

   262     ProgressEvent e = new ProgressEvent(browser);

   263     e.display = browser.getDisplay();

   264     e.widget = browser;

   265     e.time = time;

   266     e.current = current; // %

   267     e.total = 100; // %

   268     for (int i = 0; i < progressListeners.length; i++) {

   269         progressListeners[i].changed(e);

   270     }

   271 }

   272 

   273 private void sendProgressEventCompleted(int time) {

   274     ProgressEvent e = new ProgressEvent(browser);

   275     e.display = browser.getDisplay();

   276     e.widget = browser;

   277     e.time = time;

   278     e.current = 100; // %

   279     e.total = 100; // %

   280     for (int i = 0; i < progressListeners.length; i++) {

   281         progressListeners[i].completed(e);

   282     }

   283 }

   284 

   285 private void sendStatusTextEventChanged(int time, String text) {

   286     StatusTextEvent e = new StatusTextEvent(browser);

   287     e.display = browser.getDisplay();

   288     e.widget = browser;

   289     e.time = time;

   290     e.text = text;

   291     for (int i = 0; i < statusTextListeners.length; i++) {

   292         statusTextListeners[i].changed(e);

   293     }

   294 }

   295 

   296 private void sendTitleEventChanged(int time, String text) {

   297     TitleEvent e = new TitleEvent(browser);

   298     e.display = browser.getDisplay();

   299     e.widget = browser;

   300     e.time = time;

   301     e.title = text;

   302     for (int i = 0; i < titleListeners.length; i++) {

   303         titleListeners[i].changed(e);

   304     }

   305 }

   306 

   307 private void sendLocationEventChanged(int time, String text) {

   308     LocationEvent e = new LocationEvent(browser);

   309     e.display = browser.getDisplay();

   310     e.widget = browser;

   311     e.time = time;

   312     e.location = text;

   313     e.doit = true;

   314     e.top = true;

   315     for (int i = 0; i < locationListeners.length; i++) {

   316         locationListeners[i].changed(e);

   317     }

   318 }

   319 

   320 private boolean sendLocationEventChanging(int time, String text) {

   321     LocationEvent e = new LocationEvent(browser);

   322     e.display = browser.getDisplay();

   323     e.widget = browser;

   324     e.time = time;

   325     e.location = text;

   326     e.doit = true;

   327     boolean globalDoIt = true;

   328     for (int i = 0; i < locationListeners.length; i++) {

   329         locationListeners[i].changing(e);

   330         globalDoIt &= e.doit;

   331     }

   332     return globalDoIt;

   333 }

   334 }