/*******************************************************************************

 * All rights reserved. This program and the accompanying materials 

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

 * which accompanies this distribution, and is available at

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

 * 

 * Contributors:

 *     Nokia Corporation - QT implementation

 *******************************************************************************/

package org.eclipse.swt.browser;

import org.eclipse.swt.SWT;

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

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Event;

import org.eclipse.swt.widgets.Internal_PackageSupport;

import org.eclipse.swt.widgets.Listener;

class QtWebKit extends WebBrowser {

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

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

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

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

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

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

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

    private boolean ignoreDispose = false;

    private int webViewHandle;

/**

 * @see WebBrowser

 */

public void create(Composite parent, int style) {

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

    int scrollAreaHandle = Internal_PackageSupport.topHandle(browser);

    int viewPortHandle = Internal_PackageSupport.handle(browser);

    OS.QWidget_setParent(webViewHandle, scrollAreaHandle);

    int layout = OS.QVBoxLayout_new(0);

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

    OS.QLayout_setSpacing(layout, 0);

    OS.QLayout_addWidget(layout, webViewHandle);

    OS.QWidget_setLayout(scrollAreaHandle, layout);

    OS.QWidget_setVisible(webViewHandle, true);

    OS.QLayout_activate(layout);

    OS.QLayout_update(layout);

    Display display = browser.getDisplay();

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

    Internal_PackageSupport.setHandle(browser, webViewHandle);

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

    OS.QWidget_setFocusProxy(scrollAreaHandle, webViewHandle);

    OS.QWidget_setFocusProxy(viewPortHandle, webViewHandle);

    Listener listener = new Listener() {

        public void handleEvent(Event e) {

            switch (e.type) {

                case SWT.Dispose: {

                    if (ignoreDispose) {

                        ignoreDispose = false;

                        break;

                    }

                    ignoreDispose = true;

                    browser.notifyListeners (e.type, e);

                    e.type = SWT.NONE;

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

                    break;

                }

            }

        }

    };

    browser.addListener(SWT.Dispose, listener);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

}

/**

 * @see WebBrowser

 */

public boolean back() {

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

            return true;

        }

    }

    return false;

}

/**

 * @see WebBrowser

 */

public boolean execute(String script) {

}

/**

 * @see WebBrowser

 */

public boolean forward() {

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

            return true;

        }

    }

    return false;

}

/**

 * @see WebBrowser

 */

public String getBrowserType() {

    return "qtwebkit";

}

/**

 * @see WebBrowser

 */

public String getText() { // Not eSWT API

    return null;

}

/**

 * @see WebBrowser

 */

public String getUrl() {

}

/**

 * @see WebBrowser

 */

public boolean isBackEnabled() {

}

/**

 * @see WebBrowser

 */

public boolean isForwardEnabled() {

}

/**

 * @see WebBrowser

 */

public void refresh() {

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

    }

}

/**

 * @see WebBrowser

 */

public boolean setText(String html) {

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

        return true;

    }

    else {

        return false;

    }

}

/**

 * @see WebBrowser

 */

public boolean setUrl(String url) {

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

        return true;

    }

    else {

        return false;

    }

}

/**

 * @see WebBrowser

 */

public void stop() {

}

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

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

    if (browser.isDisposed()) {

        return false;

    }

    if (widgetHandle != webViewHandle) {

        return false;

    }

    switch (eventType) {

    case OS.QSIGNAL_WEBVIEW_LOADFINISHED:

        sendProgressEventCompleted(time);

        break;

    case OS.QSIGNAL_WEBVIEW_LOADPROGRESS:

        sendProgressEventChanged(time, arg1);

        break;

    case OS.QSIGNAL_WEBVIEW_LOADSTARTED:

        sendProgressEventChanged(time, 0);

        break;

    case OS.QSIGNAL_WEBVIEW_LINKCLICKED:

        sendLocationEventChanging(time, arg6);

        break;

    case OS.QSIGNAL_WEBVIEW_STATUSBARMESSAGE:

        sendStatusTextEventChanged(time, arg6);

        break;

    case OS.QSIGNAL_WEBVIEW_TITLECHANGED:

        sendTitleEventChanged(time, arg6);

        break;

    case OS.QSIGNAL_WEBVIEW_URLCHANGED:

        sendLocationEventChanged(time, arg6);

        break;

    default:

        break;

    }

    return false;

}

private void sendProgressEventChanged(int time, int current) {

    ProgressEvent e = new ProgressEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.current = current; // %

    e.total = 100; // %

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

        progressListeners[i].changed(e);

    }

}

private void sendProgressEventCompleted(int time) {

    ProgressEvent e = new ProgressEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.current = 100; // %

    e.total = 100; // %

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

        progressListeners[i].completed(e);

    }

}

private void sendStatusTextEventChanged(int time, String text) {

    StatusTextEvent e = new StatusTextEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.text = text;

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

        statusTextListeners[i].changed(e);

    }

}

private void sendTitleEventChanged(int time, String text) {

    TitleEvent e = new TitleEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.title = text;

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

        titleListeners[i].changed(e);

    }

}

private void sendLocationEventChanged(int time, String text) {

    LocationEvent e = new LocationEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.location = text;

    e.doit = true;

    e.top = true;

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

        locationListeners[i].changed(e);

    }

}

private boolean sendLocationEventChanging(int time, String text) {

    LocationEvent e = new LocationEvent(browser);

    e.display = browser.getDisplay();

    e.widget = browser;

    e.time = time;

    e.location = text;

    e.doit = true;

    boolean globalDoIt = true;

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

        locationListeners[i].changing(e);

        globalDoIt &= e.doit;

    }

    return globalDoIt;

}

}