/*******************************************************************************
 * Copyright (c) 2003, 2007 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
module dwt.browser.WindowCreator2;

import dwt.dwthelper.utils;

import dwt.DWT;
import dwt.graphics.Point;
import dwt.internal.C;
import dwt.internal.Platform;
import dwt.internal.mozilla.XPCOM;
import dwt.internal.mozilla.XPCOMObject;
import dwt.internal.mozilla.nsIBaseWindow;
import dwt.internal.mozilla.nsID;
import dwt.internal.mozilla.nsISupports;
import dwt.internal.mozilla.nsIURI;
import dwt.internal.mozilla.nsIWebBrowser;
import dwt.internal.mozilla.nsIWebBrowserChrome;
import dwt.internal.mozilla.nsIWindowCreator;
import dwt.internal.mozilla.nsIWindowCreator2;
import dwt.layout.FillLayout;
import dwt.widgets.Shell;

class WindowCreator2 {
    XPCOMObject supports;
    XPCOMObject windowCreator;
    XPCOMObject windowCreator2;
    int refCount = 0;

WindowCreator2 () {
    createCOMInterfaces ();
}

int AddRef () {
    refCount++;
    return refCount;
}

void createCOMInterfaces () {
    /* Create each of the interfaces that this object implements */
    supports = new XPCOMObject (new int[] {2, 0, 0}) {
        public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
        public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
        public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
    };

    windowCreator = new XPCOMObject (new int[] {2, 0, 0, 3}) {
        public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
        public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
        public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
        public int /*long*/ method3 (int /*long*/[] args) {return CreateChromeWindow (args[0], (int)/*64*/args[1], args[2]);}
    };

    windowCreator2 = new XPCOMObject (new int[] {2, 0, 0, 3, 6}) {
        public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);}
        public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();}
        public int /*long*/ method2 (int /*long*/[] args) {return Release ();}
        public int /*long*/ method3 (int /*long*/[] args) {return CreateChromeWindow (args[0], (int)/*64*/args[1], args[2]);}
        public int /*long*/ method4 (int /*long*/[] args) {return CreateChromeWindow2 (args[0], (int)/*64*/args[1], (int)/*64*/args[2], args[3], args[4], args[5]);}
    };
}

void disposeCOMInterfaces () {
    if (supports !is null) {
        supports.dispose ();
        supports = null;
    }   
    if (windowCreator !is null) {
        windowCreator.dispose ();
        windowCreator = null;   
    }

    if (windowCreator2 !is null) {
        windowCreator2.dispose ();
        windowCreator2 = null;  
    }
}

int /*long*/ getAddress () {
    return windowCreator.getAddress ();
}

int QueryInterface (int /*long*/ riid, int /*long*/ ppvObject) {
    if (riid is 0 || ppvObject is 0) return XPCOM.NS_ERROR_NO_INTERFACE;
    nsID guid = new nsID ();
    XPCOM.memmove (guid, riid, nsID.sizeof);
    
    if (guid.Equals (nsISupports.NS_ISUPPORTS_IID)) {
        XPCOM.memmove (ppvObject, new int /*long*/[] {supports.getAddress ()}, C.PTR_SIZEOF);
        AddRef ();
        return XPCOM.NS_OK;
    }
    if (guid.Equals (nsIWindowCreator.NS_IWINDOWCREATOR_IID)) {
        XPCOM.memmove (ppvObject, new int /*long*/[] {windowCreator.getAddress ()}, C.PTR_SIZEOF);
        AddRef ();
        return XPCOM.NS_OK;
    }
    if (guid.Equals (nsIWindowCreator2.NS_IWINDOWCREATOR2_IID)) {
        XPCOM.memmove (ppvObject, new int /*long*/[] {windowCreator2.getAddress ()}, C.PTR_SIZEOF);
        AddRef ();
        return XPCOM.NS_OK;
    }

    XPCOM.memmove (ppvObject, new int /*long*/[] {0}, C.PTR_SIZEOF);
    return XPCOM.NS_ERROR_NO_INTERFACE;
}
            
int Release () {
    refCount--;
    if (refCount is 0) disposeCOMInterfaces ();
    return refCount;
}
    
/* nsIWindowCreator */

int CreateChromeWindow (int /*long*/ parent, int chromeFlags, int /*long*/ _retval) {
    return CreateChromeWindow2 (parent, chromeFlags, 0, 0, 0, _retval);
}

/* nsIWindowCreator2 */

int CreateChromeWindow2 (int /*long*/ parent, int chromeFlags, int contextFlags, int /*long*/ uri, int /*long*/ cancel, int /*long*/ _retval) {
    if (parent is 0 && (chromeFlags & nsIWebBrowserChrome.CHROME_OPENAS_CHROME) is 0) {
        return XPCOM.NS_ERROR_NOT_IMPLEMENTED;
    }
    Browser src = null; 
    if (parent !is 0) {
        nsIWebBrowserChrome browserChromeParent = new nsIWebBrowserChrome (parent);
        int /*long*/[] aWebBrowser = new int /*long*/[1];
        int rc = browserChromeParent.GetWebBrowser (aWebBrowser);
        if (rc !is XPCOM.NS_OK) Mozilla.error (rc);
        if (aWebBrowser[0] is 0) Mozilla.error (XPCOM.NS_ERROR_NO_INTERFACE);

        nsIWebBrowser webBrowser = new nsIWebBrowser (aWebBrowser[0]);
        int /*long*/[] result = new int /*long*/[1];
        rc = webBrowser.QueryInterface (nsIBaseWindow.NS_IBASEWINDOW_IID, result);
        if (rc !is XPCOM.NS_OK) Mozilla.error (rc);
        if (result[0] is 0) Mozilla.error (XPCOM.NS_ERROR_NO_INTERFACE);
        webBrowser.Release ();

        nsIBaseWindow baseWindow = new nsIBaseWindow (result[0]);
        result[0] = 0;
        int /*long*/[] aParentNativeWindow = new int /*long*/[1];
        rc = baseWindow.GetParentNativeWindow (aParentNativeWindow);
        if (rc !is XPCOM.NS_OK) Mozilla.error (rc);
        if (aParentNativeWindow[0] is 0) Mozilla.error (XPCOM.NS_ERROR_NO_INTERFACE);
        baseWindow.Release ();

        src = Mozilla.findBrowser (aParentNativeWindow[0]);
    }
    final Browser browser;
    bool doit = true;
    if ((chromeFlags & nsIWebBrowserChrome.CHROME_OPENAS_CHROME) !is 0) {
        /*
        * Mozilla will request a new Browser in a modal window in order to emulate a native
        * dialog that is not available to it (eg.- a print dialog on Linux).  For this
        * reason modal requests are handled here so that the user is not exposed to them.
        */
        int style = DWT.DIALOG_TRIM;
        if ((chromeFlags & nsIWebBrowserChrome.CHROME_MODAL) !is 0) style |= DWT.APPLICATION_MODAL; 
        final Shell shell = src is null ?
            new Shell (style) :
            new Shell (src.getShell(), style);
        shell.setLayout (new FillLayout ());
        browser = new Browser (shell, src is null ? DWT.MOZILLA : src.getStyle () & DWT.MOZILLA);
        browser.addVisibilityWindowListener (new VisibilityWindowListener () {
            public void hide (WindowEvent event) {
            }
            public void show (WindowEvent event) {
                if (event.location !is null) shell.setLocation (event.location);
                if (event.size !is null) {
                    Point size = event.size;
                    shell.setSize (shell.computeSize (size.x, size.y));
                }
                shell.open ();
            }
        });
        browser.addCloseWindowListener (new CloseWindowListener () {
            public void close (WindowEvent event) {
                shell.close ();
            }
        });
        if (uri !is 0) {
            nsIURI location = new nsIURI (uri);
            int /*long*/ aSpec = XPCOM.nsEmbedCString_new ();
            if (location.GetSpec (aSpec) is XPCOM.NS_OK) {
                int length = XPCOM.nsEmbedCString_Length (aSpec);
                if (length > 0) {
                    int /*long*/ buffer = XPCOM.nsEmbedCString_get (aSpec);
                    byte[] dest = new byte[length];
                    XPCOM.memmove (dest, buffer, length);
                    browser.setUrl (new String (dest));
                }
            }
            XPCOM.nsEmbedCString_delete (aSpec);
        }
    } else {
        WindowEvent event = new WindowEvent (src);
        event.display = src.getDisplay ();
        event.widget = src;
        event.required = true;
        for (int i = 0; i < src.webBrowser.openWindowListeners.length; i++) {
            src.webBrowser.openWindowListeners[i].open (event);
        }
        browser = event.browser;

        /* Ensure that the Browser provided by the client is valid for use */ 
        doit = browser !is null && !browser.isDisposed ();
        if (doit) {
            String platform = Platform.PLATFORM;
            bool isMozillaNativePlatform = platform.equals ("gtk") || platform.equals ("motif"); //$NON-NLS-1$ //$NON-NLS-2$
            doit = isMozillaNativePlatform || (browser.getStyle () & DWT.MOZILLA) !is 0;
        }
    }
    if (doit) {
        Mozilla mozilla = (Mozilla)browser.webBrowser;
        mozilla.isChild = true;
        int /*long*/ chromePtr = mozilla.webBrowserChrome.getAddress ();
        nsIWebBrowserChrome webBrowserChrome = new nsIWebBrowserChrome (chromePtr);
        webBrowserChrome.SetChromeFlags (chromeFlags);
        webBrowserChrome.AddRef ();
        XPCOM.memmove (_retval, new int /*long*/[] {chromePtr}, C.PTR_SIZEOF);
    } else {
        if (cancel !is 0) {
            C.memmove (cancel, new int[] {1}, 4);   /* PRBool */
        }
    }
    return doit ? XPCOM.NS_OK : XPCOM.NS_ERROR_NOT_IMPLEMENTED;
}
}