/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Mozilla browser.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications, Inc.  Portions created by Netscape are
 * Copyright (C) 1999, Mozilla.  All Rights Reserved.
 * 
 * Contributor(s):
 */

// Mozilla Includes
#include "nsIGenericFactory.h"
#include "nsIComponentManager.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "nsIURI.h"
#include "nsIWebProgress.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowInternal.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIRequest.h"
#include "nsIChannel.h"
#include "nsCWebBrowser.h"
#include "nsWidgetsCID.h"
#include "nsXPIDLString.h"
#include "nsIProfileChangeStatus.h"

// Local includes
#include "resource.h"

#include "winEmbed.h"
#include "WebBrowserChrome.h"


WebBrowserChrome::WebBrowserChrome()
{
    NS_INIT_REFCNT();
    mNativeWindow = nsnull;
    mSizeSet = PR_FALSE;
}

WebBrowserChrome::~WebBrowserChrome()
{
    WebBrowserChromeUI::Destroyed(this);
}

nsresult WebBrowserChrome::CreateBrowser(PRInt32 aX, PRInt32 aY,
                                         PRInt32 aCX, PRInt32 aCY,
                                         nsIWebBrowser **aBrowser)
{
    NS_ENSURE_ARG_POINTER(aBrowser);
    *aBrowser = nsnull;

    mWebBrowser = do_CreateInstance(NS_WEBBROWSER_CONTRACTID);
    
    if (!mWebBrowser)
        return NS_ERROR_FAILURE;

    (void)mWebBrowser->SetContainerWindow(NS_STATIC_CAST(nsIWebBrowserChrome*, this));

    nsCOMPtr<nsIDocShellTreeItem> dsti = do_QueryInterface(mWebBrowser);
    dsti->SetItemType(nsIDocShellTreeItem::typeContentWrapper);

    nsCOMPtr<nsIBaseWindow> browserBaseWindow = do_QueryInterface(mWebBrowser);

    mNativeWindow = WebBrowserChromeUI::CreateNativeWindow(NS_STATIC_CAST(nsIWebBrowserChrome*, this));

    if (!mNativeWindow)
        return NS_ERROR_FAILURE;

    browserBaseWindow->InitWindow( mNativeWindow,
                             nsnull, 
                             aX, aY, aCX, aCY);
    browserBaseWindow->Create();

    nsCOMPtr<nsIWebProgressListener> listener(NS_STATIC_CAST(nsIWebProgressListener*, this));
    nsCOMPtr<nsIWeakReference> thisListener(dont_AddRef(NS_GetWeakReference(listener)));
    (void)mWebBrowser->AddWebBrowserListener(thisListener, 
        NS_GET_IID(nsIWebProgressListener));

    // The window has been created. Now register for history notifications
    mWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsISHistoryListener));

    if (mWebBrowser)
    {
      *aBrowser = mWebBrowser;
      NS_ADDREF(*aBrowser);
      return NS_OK;
    }
    return NS_ERROR_FAILURE;
}

//*****************************************************************************
// WebBrowserChrome::nsISupports
//*****************************************************************************   

NS_IMPL_ADDREF(WebBrowserChrome)
NS_IMPL_RELEASE(WebBrowserChrome)

NS_INTERFACE_MAP_BEGIN(WebBrowserChrome)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIWebBrowserChrome)
   NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
   NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome)
   NS_INTERFACE_MAP_ENTRY(nsIEmbeddingSiteWindow)
   NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener) // optional
   NS_INTERFACE_MAP_ENTRY(nsISHistoryListener)
   NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
   NS_INTERFACE_MAP_ENTRY(nsIObserver)
   NS_INTERFACE_MAP_ENTRY(nsIContextMenuListener)
   NS_INTERFACE_MAP_ENTRY(nsITooltipListener)
NS_INTERFACE_MAP_END

//*****************************************************************************
// WebBrowserChrome::nsIInterfaceRequestor
//*****************************************************************************   

NS_IMETHODIMP WebBrowserChrome::GetInterface(const nsIID &aIID, void** aInstancePtr)
{
    NS_ENSURE_ARG_POINTER(aInstancePtr);

    *aInstancePtr = 0;
    if (aIID.Equals(NS_GET_IID(nsIDOMWindow)))
    {
        if (mWebBrowser)
        {
            return mWebBrowser->GetContentDOMWindow((nsIDOMWindow **) aInstancePtr);
        }
        return NS_ERROR_NOT_INITIALIZED;
    }
    return QueryInterface(aIID, aInstancePtr);
}

//*****************************************************************************
// WebBrowserChrome::nsIWebBrowserChrome
//*****************************************************************************   

NS_IMETHODIMP WebBrowserChrome::SetStatus(PRUint32 aType, const PRUnichar* aStatus)
{
    WebBrowserChromeUI::UpdateStatusBarText(this, aStatus);
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::GetWebBrowser(nsIWebBrowser** aWebBrowser)
{
    NS_ENSURE_ARG_POINTER(aWebBrowser);
    *aWebBrowser = mWebBrowser;
    NS_IF_ADDREF(*aWebBrowser);
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::SetWebBrowser(nsIWebBrowser* aWebBrowser)
{
    mWebBrowser = aWebBrowser;
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::GetChromeFlags(PRUint32* aChromeMask)
{
    *aChromeMask = mChromeFlags;
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::SetChromeFlags(PRUint32 aChromeMask)
{
    mChromeFlags = aChromeMask;
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::CreateBrowserWindow(PRUint32 aChromeFlags,
                                  PRInt32 aX, PRInt32 aY,
                                  PRInt32 aCX, PRInt32 aCY,
                                  nsIWebBrowser **_retval)
{
    NS_ENSURE_ARG_POINTER(_retval);
    *_retval = nsnull;

    // Create the chrome object. Note that it leaves this function
    // with an extra reference so that it can released correctly during
    // destruction (via Win32UI::Destroy)

    nsresult rv;

    nsIWebBrowserChrome *parent = aChromeFlags & nsIWebBrowserChrome::CHROME_DEPENDENT ? this : 0;

    nsCOMPtr<nsIWebBrowserChrome> newChrome;
    rv = AppCallbacks::CreateBrowserWindow(aChromeFlags, parent,
                         getter_AddRefs(newChrome));
    if (NS_SUCCEEDED(rv))
    {
        newChrome->GetWebBrowser(_retval);
        // leave chrome windows hidden until the chrome is loaded
        if (!(aChromeFlags & nsIWebBrowserChrome::CHROME_OPENAS_CHROME))
          WebBrowserChromeUI::ShowWindow(this, PR_TRUE);
    }

    return rv;
}


NS_IMETHODIMP WebBrowserChrome::DestroyBrowserWindow(void)
{
    WebBrowserChromeUI::Destroy(this);
    return NS_OK;
}


NS_IMETHODIMP WebBrowserChrome::SizeBrowserTo(PRInt32 aCX, PRInt32 aCY)
{
  /* This isn't exactly correct: we're setting the whole window to
     the size requested for the browser. At time of writing, though,
     it's fine and useful for winEmbed's purposes. */
  WebBrowserChromeUI::SizeTo(this, aCX, aCY);
  mSizeSet = PR_TRUE;
  return NS_OK;
}


NS_IMETHODIMP WebBrowserChrome::ShowAsModal(void)
{
  if (mDependentParent)
    AppCallbacks::EnableChromeWindow(mDependentParent, PR_FALSE);

  mContinueModalLoop = PR_TRUE;
  AppCallbacks::RunEventLoop(mContinueModalLoop);

  if (mDependentParent)
    AppCallbacks::EnableChromeWindow(mDependentParent, PR_TRUE);

  return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::IsWindowModal(PRBool *_retval)
{
    *_retval = PR_FALSE;
    return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP WebBrowserChrome::ExitModalEventLoop(nsresult aStatus)
{
  mContinueModalLoop = PR_FALSE;
  return NS_OK;
}

//*****************************************************************************
// WebBrowserChrome::nsIWebBrowserChromeFocus
//*****************************************************************************

NS_IMETHODIMP WebBrowserChrome::FocusNextElement()
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP WebBrowserChrome::FocusPrevElement()
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

//*****************************************************************************
// WebBrowserChrome::nsIWebProgressListener
//*****************************************************************************   

NS_IMETHODIMP WebBrowserChrome::OnProgressChange(nsIWebProgress *progress, nsIRequest *request,
                                                  PRInt32 curSelfProgress, PRInt32 maxSelfProgress,
                                                  PRInt32 curTotalProgress, PRInt32 maxTotalProgress)
{
    WebBrowserChromeUI::UpdateProgress(this, curTotalProgress, maxTotalProgress);
    return NS_OK;
}

NS_IMETHODIMP WebBrowserChrome::OnStateChange(nsIWebProgress *progress, nsIRequest *request,
                                               PRInt32 progressStateFlags, PRUint32 status)
{
    if ((progressStateFlags & STATE_START) && (progressStateFlags & STATE_IS_DOCUMENT))
    {
        WebBrowserChromeUI::UpdateBusyState(this, PR_TRUE);
    }

    if ((progressStateFlags & STATE_STOP) && (progressStateFlags & STATE_IS_DOCUMENT))
    {
        WebBrowserChromeUI::UpdateBusyState(this, PR_FALSE);
        WebBrowserChromeUI::UpdateProgress(this, 0, 100);
        WebBrowserChromeUI::UpdateStatusBarText(this, nsnull);
        ContentFinishedLoading();
    }

    return NS_OK;
}


NS_IMETHODIMP WebBrowserChrome::OnLocationChange(nsIWebProgress* aWebProgress,
                                                 nsIRequest* aRequest,
                                                 nsIURI *location)
{
  PRBool isSubFrameLoad = PR_FALSE; // Is this a subframe load
  if (aWebProgress) {
    nsCOMPtr<nsIDOMWindow>  domWindow;
    nsCOMPtr<nsIDOMWindow>  topDomWindow;
    aWebProgress->GetDOMWindow(getter_AddRefs(domWindow));
    if (domWindow) { // Get root domWindow
      domWindow->GetTop(getter_AddRefs(topDomWindow));
    }
    if (domWindow != topDomWindow)
      isSubFrameLoad = PR_TRUE;
  }
  if (!isSubFrameLoad)
    WebBrowserChromeUI::UpdateCurrentURI(this);
  return NS_OK;
}

NS_IMETHODIMP 
WebBrowserChrome::OnStatusChange(nsIWebProgress* aWebProgress,
                                 nsIRequest* aRequest,
                                 nsresult aStatus,
                                 const PRUnichar* aMessage)
{
    WebBrowserChromeUI::UpdateStatusBarText(this, aMessage);
    return NS_OK;
}



NS_IMETHODIMP 
WebBrowserChrome::OnSecurityChange(nsIWebProgress *aWebProgress, 
                                    nsIRequest *aRequest, 
                                    PRInt32 state)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

//*****************************************************************************
// WebBrowserChrome::nsISHistoryListener
//*****************************************************************************   

NS_IMETHODIMP
WebBrowserChrome::OnHistoryNewEntry(nsIURI * aNewURI)
{
    return SendHistoryStatusMessage(aNewURI, "add");
}

NS_IMETHODIMP
WebBrowserChrome::OnHistoryGoBack(nsIURI * aBackURI, PRBool * aContinue)
{
    // For now, let the operation continue
    *aContinue = PR_TRUE;
    return SendHistoryStatusMessage(aBackURI, "back");
}


NS_IMETHODIMP
WebBrowserChrome::OnHistoryGoForward(nsIURI * aForwardURI, PRBool * aContinue)
{
    // For now, let the operation continue
    *aContinue = PR_TRUE;
    return SendHistoryStatusMessage(aForwardURI, "forward");
}


NS_IMETHODIMP
WebBrowserChrome::OnHistoryGotoIndex(PRInt32 aIndex, nsIURI * aGotoURI, PRBool * aContinue)
{
    // For now, let the operation continue
    *aContinue = PR_TRUE;
    return SendHistoryStatusMessage(aGotoURI, "goto", aIndex);
}

NS_IMETHODIMP
WebBrowserChrome::OnHistoryReload(nsIURI * aURI, PRUint32 aReloadFlags, PRBool * aContinue)
{
    // For now, let the operation continue
    *aContinue = PR_TRUE;
    return SendHistoryStatusMessage(aURI, "reload", 0 /* no info to pass here */, aReloadFlags);
}

NS_IMETHODIMP
WebBrowserChrome::OnHistoryPurge(PRInt32 aNumEntries, PRBool *aContinue)
{
    // For now let the operation continue
    *aContinue = PR_FALSE;
    return SendHistoryStatusMessage(nsnull, "purge", aNumEntries);
}

nsresult
WebBrowserChrome::SendHistoryStatusMessage(nsIURI * aURI, char * operation, PRInt32 info1, PRUint32 aReloadFlags)
{
    nsXPIDLCString uriCStr;
    if (aURI)
    {
        aURI->GetSpec(getter_Copies(uriCStr));
    }

    nsString uriAStr;

    if(!(nsCRT::strcmp(operation, "back")))
    {
        // Going back. XXX Get string from a resource file
        uriAStr.Append(NS_ConvertASCIItoUCS2("Going back to url:"));
        uriAStr.Append(NS_ConvertASCIItoUCS2(uriCStr));
    }
    else if (!(nsCRT::strcmp(operation, "forward")))
    {
        // Going forward. XXX Get string from a resource file
        uriAStr.Append(NS_ConvertASCIItoUCS2("Going forward to url:"));
        uriAStr.Append(NS_ConvertASCIItoUCS2(uriCStr));
    }
    else if (!(nsCRT::strcmp(operation, "reload")))
    {
        // Reloading. XXX Get string from a resource file
        if (aReloadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY && 
            aReloadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE)
        {
            uriAStr.Append(NS_ConvertASCIItoUCS2("Reloading url,(bypassing proxy and cache) :"));
        }
        else if (aReloadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_PROXY)
        {
            uriAStr.Append(NS_ConvertASCIItoUCS2("Reloading url, (bypassing proxy):"));
        }
        else if (aReloadFlags & nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE)
        {
            uriAStr.Append(NS_ConvertASCIItoUCS2("Reloading url, (bypassing cache):"));
        }
        else
        {
            uriAStr.Append(NS_ConvertASCIItoUCS2("Reloading url, (normal):"));
        }
        uriAStr.Append(NS_ConvertASCIItoUCS2(uriCStr));
    }
    else if (!(nsCRT::strcmp(operation, "add")))
    {
        // Adding new entry. XXX Get string from a resource file
        uriAStr.Append(NS_ConvertASCIItoUCS2(uriCStr));
        uriAStr.Append(NS_ConvertASCIItoUCS2(" added to session History"));
    }
    else if (!(nsCRT::strcmp(operation, "goto")))
    {
        // Goto. XXX Get string from a resource file
        uriAStr.Append(NS_ConvertASCIItoUCS2("Going to HistoryIndex:"));
        uriAStr.AppendInt(info1);
        uriAStr.Append(NS_ConvertASCIItoUCS2(" Url:"));
        uriAStr.Append(NS_ConvertASCIItoUCS2(uriCStr));
    }
    else if (!(nsCRT::strcmp(operation, "purge")))
    {
        // Purging old entries
        uriAStr.AppendInt(info1);
        uriAStr.Append(NS_ConvertASCIItoUCS2(" purged from Session History"));
    }

    PRUnichar * uriStr = nsnull;
    uriStr = uriAStr.ToNewUnicode();
    WebBrowserChromeUI::UpdateStatusBarText(this, uriStr);
    nsCRT::free(uriStr);

    return NS_OK;
}

void WebBrowserChrome::ContentFinishedLoading()
{
  // if it was a chrome window and no one has already specified a size,
  // size to content
  if (mWebBrowser && !mSizeSet &&
     (mChromeFlags & nsIWebBrowserChrome::CHROME_OPENAS_CHROME)) {
    nsCOMPtr<nsIDOMWindow> contentWin;
    mWebBrowser->GetContentDOMWindow(getter_AddRefs(contentWin));
    if (contentWin)
        contentWin->SizeToContent();
    WebBrowserChromeUI::ShowWindow(this, PR_TRUE);
  }
}


//*****************************************************************************
// WebBrowserChrome::nsIEmbeddingSiteWindow
//*****************************************************************************   

NS_IMETHODIMP WebBrowserChrome::SetDimensions(PRUint32 aFlags, PRInt32 x, PRInt32 y, PRInt32 cx, PRInt32 cy)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP WebBrowserChrome::GetDimensions(PRUint32 aFlags, PRInt32 *x, PRInt32 *y, PRInt32 *cx, PRInt32 *cy)
{
    if (aFlags & nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION)
    {
        *x = 0;
        *y = 0;
    }
    if (aFlags & nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_INNER ||
        aFlags & nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER)
    {
        *cx = 0;
        *cy = 0;
    }
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* void setFocus (); */
NS_IMETHODIMP WebBrowserChrome::SetFocus()
{
    nsCOMPtr<nsIBaseWindow> browserBaseWindow = do_QueryInterface(mWebBrowser);
   return browserBaseWindow->SetFocus();
}

/* attribute wstring title; */
NS_IMETHODIMP WebBrowserChrome::GetTitle(PRUnichar * *aTitle)
{
   NS_ENSURE_ARG_POINTER(aTitle);

   *aTitle = nsnull;
   
   return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP WebBrowserChrome::SetTitle(const PRUnichar * aTitle)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute boolean visibility; */
NS_IMETHODIMP WebBrowserChrome::GetVisibility(PRBool * aVisibility)
{
    NS_ENSURE_ARG_POINTER(aVisibility);
    *aVisibility = PR_TRUE;
    return NS_OK;
}
NS_IMETHODIMP WebBrowserChrome::SetVisibility(PRBool aVisibility)
{
    return NS_OK;
}

/* attribute nativeSiteWindow siteWindow */
NS_IMETHODIMP WebBrowserChrome::GetSiteWindow(void * *aSiteWindow)
{
   NS_ENSURE_ARG_POINTER(aSiteWindow);

   *aSiteWindow = mNativeWindow;
   return NS_OK;
}


//*****************************************************************************
// WebBrowserChrome::nsIObserver
//*****************************************************************************   

NS_IMETHODIMP WebBrowserChrome::Observe(nsISupports *aSubject, const PRUnichar *aTopic, const PRUnichar *someData)
{
    nsresult rv = NS_OK;
    if (nsCRT::strcmp(aTopic, NS_LITERAL_STRING("profile-change-teardown").get()) == 0)
    {
        // A profile change means death for this window
        WebBrowserChromeUI::Destroy(this);
    }
    return rv;
}

//*****************************************************************************
// WebBrowserChrome::nsIContextMenuListener
//*****************************************************************************   

/* void OnShowContextMenu (in unsigned long aContextFlags, in nsIDOMEvent aEvent, in nsIDOMNode aNode); */
NS_IMETHODIMP WebBrowserChrome::OnShowContextMenu(PRUint32 aContextFlags, nsIDOMEvent *aEvent, nsIDOMNode *aNode)
{
    WebBrowserChromeUI::ShowContextMenu(this, aContextFlags, aEvent, aNode);
    return NS_OK;
}

//*****************************************************************************
// WebBrowserChrome::nsITooltipListener
//*****************************************************************************   

/* void OnShowTooltip (in long aXCoords, in long aYCoords, in wstring aTipText); */
NS_IMETHODIMP WebBrowserChrome::OnShowTooltip(PRInt32 aXCoords, PRInt32 aYCoords, const PRUnichar *aTipText)
{
    WebBrowserChromeUI::ShowTooltip(this, aXCoords, aYCoords, aTipText);
    return NS_OK;
}

/* void OnHideTooltip (); */
NS_IMETHODIMP WebBrowserChrome::OnHideTooltip()
{
    WebBrowserChromeUI::HideTooltip(this);
    return NS_OK;
}