/*
 * Copyright 2008 Jacek Caban for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#define COBJMACROS

#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "ole2.h"

#include "mshtml_private.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(mshtml);

typedef struct {
    HTMLElement element;
    const IHTMLFrameBase2Vtbl  *lpIHTMLFrameBase2Vtbl;

    LONG ref;

    nsIDOMHTMLIFrameElement *nsiframe;
    HTMLWindow *content_window;
} HTMLIFrame;

#define HTMLFRAMEBASE2(x)  (&(x)->lpIHTMLFrameBase2Vtbl)

static HRESULT create_content_window(HTMLIFrame *This, nsIDOMHTMLDocument *nsdoc, HTMLWindow **ret)
{
    nsIDOMDocumentView *nsdocview;
    nsIDOMAbstractView *nsview;
    nsIDOMWindow *nswindow;
    nsresult nsres;
    HRESULT hres;

    nsres = nsIDOMHTMLDocument_QueryInterface(nsdoc, &IID_nsIDOMDocumentView, (void**)&nsdocview);
    if(NS_FAILED(nsres)) {
        ERR("Could not get nsIDOMDocumentView: %08x\n", nsres);
        return E_FAIL;
    }

    nsres = nsIDOMDocumentView_GetDefaultView(nsdocview, &nsview);
    nsIDOMDocumentView_Release(nsdocview);
    if(NS_FAILED(nsres)) {
        ERR("GetDefaultView failed: %08x\n", nsres);
        return E_FAIL;
    }

    nsres = nsIDOMAbstractView_QueryInterface(nsview, &IID_nsIDOMWindow, (void**)&nswindow);
    nsIDOMAbstractView_Release(nsview);
    if(NS_FAILED(nsres)) {
        ERR("Coult not get nsIDOMWindow iface: %08x\n", nsres);
        return E_FAIL;
    }

    hres = HTMLWindow_Create(This->element.node.doc->basedoc.doc_obj, nswindow, ret);

    nsIDOMWindow_Release(nswindow);
    return hres;
}

#define HTMLFRAMEBASE2_THIS(iface) DEFINE_THIS(HTMLIFrame, IHTMLFrameBase2, iface)

static HRESULT WINAPI HTMLIFrameBase2_QueryInterface(IHTMLFrameBase2 *iface, REFIID riid, void **ppv)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);

    return IHTMLDOMNode_QueryInterface(HTMLDOMNODE(&This->element.node), riid, ppv);
}

static ULONG WINAPI HTMLIFrameBase2_AddRef(IHTMLFrameBase2 *iface)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);

    return IHTMLDOMNode_AddRef(HTMLDOMNODE(&This->element.node));
}

static ULONG WINAPI HTMLIFrameBase2_Release(IHTMLFrameBase2 *iface)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);

    return IHTMLDOMNode_Release(HTMLDOMNODE(&This->element.node));
}

static HRESULT WINAPI HTMLIFrameBase2_GetTypeInfoCount(IHTMLFrameBase2 *iface, UINT *pctinfo)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_GetTypeInfo(IHTMLFrameBase2 *iface, UINT iTInfo,
        LCID lcid, ITypeInfo **ppTInfo)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_GetIDsOfNames(IHTMLFrameBase2 *iface, REFIID riid,
        LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_Invoke(IHTMLFrameBase2 *iface, DISPID dispIdMember,
        REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams,
        VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_get_contentWindow(IHTMLFrameBase2 *iface, IHTMLWindow2 **p)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);

    TRACE("(%p)->(%p)\n", This, p);

    if(!This->content_window) {
        nsIDOMHTMLDocument *nshtmldoc;
        HTMLDocumentNode *content_doc;
        nsIDOMDocument *nsdoc;
        HTMLWindow *window;
        nsresult nsres;
        HRESULT hres;

        nsres = nsIDOMHTMLIFrameElement_GetContentDocument(This->nsiframe, &nsdoc);
        if(NS_FAILED(nsres)) {
            ERR("GetContentDocument failed: %08x\n", nsres);
            return E_FAIL;
        }

        if(!nsdoc) {
            FIXME("NULL contentDocument\n");
            return E_FAIL;
        }

        nsres = nsIDOMDocument_QueryInterface(nsdoc, &IID_nsIDOMHTMLDocument, (void**)&nshtmldoc);
        nsIDOMDocument_Release(nsdoc);
        if(NS_FAILED(nsres)) {
            ERR("Could not get nsIDOMHTMLDocument iface: %08x\n", nsres);
            return E_FAIL;
        }

        hres = create_content_window(This, nshtmldoc, &window);
        if(FAILED(hres)) {
            nsIDOMHTMLDocument_Release(nshtmldoc);
            return E_FAIL;
        }

        hres = create_doc_from_nsdoc(nshtmldoc, This->element.node.doc->basedoc.doc_obj, window, &content_doc);
        nsIDOMHTMLDocument_Release(nshtmldoc);
        if(SUCCEEDED(hres))
            window_set_docnode(window, content_doc);
        else
            IHTMLWindow2_Release(HTMLWINDOW2(window));
        htmldoc_release(&content_doc->basedoc);
        if(FAILED(hres))
            return hres;

        This->content_window = window;
    }

    IHTMLWindow2_AddRef(HTMLWINDOW2(This->content_window));
    *p = HTMLWINDOW2(This->content_window);
    return S_OK;
}

static HRESULT WINAPI HTMLIFrameBase2_put_onload(IHTMLFrameBase2 *iface, VARIANT v)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_get_onload(IHTMLFrameBase2 *iface, VARIANT *p)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%p)\n", This, p);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_put_onreadystatechange(IHTMLFrameBase2 *iface, VARIANT v)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_get_onreadystatechange(IHTMLFrameBase2 *iface, VARIANT *p)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%p)\n", This, p);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_get_readyState(IHTMLFrameBase2 *iface, BSTR *p)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%p)\n", This, p);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_put_allowTransparency(IHTMLFrameBase2 *iface, VARIANT_BOOL v)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%x)\n", This, v);
    return E_NOTIMPL;
}

static HRESULT WINAPI HTMLIFrameBase2_get_allowTransparency(IHTMLFrameBase2 *iface, VARIANT_BOOL *p)
{
    HTMLIFrame *This = HTMLFRAMEBASE2_THIS(iface);
    FIXME("(%p)->(%p)\n", This, p);
    return E_NOTIMPL;
}

#undef HTMLFRAMEBASE2_THIS

static const IHTMLFrameBase2Vtbl HTMLIFrameBase2Vtbl = {
    HTMLIFrameBase2_QueryInterface,
    HTMLIFrameBase2_AddRef,
    HTMLIFrameBase2_Release,
    HTMLIFrameBase2_GetTypeInfoCount,
    HTMLIFrameBase2_GetTypeInfo,
    HTMLIFrameBase2_GetIDsOfNames,
    HTMLIFrameBase2_Invoke,
    HTMLIFrameBase2_get_contentWindow,
    HTMLIFrameBase2_put_onload,
    HTMLIFrameBase2_get_onload,
    HTMLIFrameBase2_put_onreadystatechange,
    HTMLIFrameBase2_get_onreadystatechange,
    HTMLIFrameBase2_get_readyState,
    HTMLIFrameBase2_put_allowTransparency,
    HTMLIFrameBase2_get_allowTransparency
};

#define HTMLIFRAME_NODE_THIS(iface) DEFINE_THIS2(HTMLIFrame, element.node, iface)

static HRESULT HTMLIFrame_QI(HTMLDOMNode *iface, REFIID riid, void **ppv)
{
    HTMLIFrame *This = HTMLIFRAME_NODE_THIS(iface);

    *ppv = NULL;

    if(IsEqualGUID(&IID_IHTMLFrameBase2, riid)) {
        TRACE("(%p)->(IID_IHTMLFrameBase2 %p)\n", This, ppv);
        *ppv = HTMLFRAMEBASE2(This);
    }else {
        return HTMLElement_QI(&This->element.node, riid, ppv);
    }

    IUnknown_AddRef((IUnknown*)*ppv);
    return S_OK;
}

static void HTMLIFrame_destructor(HTMLDOMNode *iface)
{
    HTMLIFrame *This = HTMLIFRAME_NODE_THIS(iface);

    if(This->content_window)
        IHTMLWindow2_Release(HTMLWINDOW2(This->content_window));
    if(This->nsiframe)
        nsIDOMHTMLIFrameElement_Release(This->nsiframe);

    HTMLElement_destructor(&This->element.node);
}

#undef HTMLIFRAME_NODE_THIS

static const NodeImplVtbl HTMLIFrameImplVtbl = {
    HTMLIFrame_QI,
    HTMLIFrame_destructor
};

static const tid_t HTMLIFrame_iface_tids[] = {
    IHTMLDOMNode_tid,
    IHTMLDOMNode2_tid,
    IHTMLElement_tid,
    IHTMLElement2_tid,
    IHTMLElement3_tid,
    IHTMLFrameBase2_tid,
    0
};

static dispex_static_data_t HTMLIFrame_dispex = {
    NULL,
    DispHTMLIFrame_tid,
    NULL,
    HTMLIFrame_iface_tids
};

HTMLElement *HTMLIFrame_Create(nsIDOMHTMLElement *nselem)
{
    HTMLIFrame *ret;
    nsresult nsres;

    ret = heap_alloc_zero(sizeof(HTMLIFrame));

    ret->lpIHTMLFrameBase2Vtbl = &HTMLIFrameBase2Vtbl;
    ret->element.node.vtbl = &HTMLIFrameImplVtbl;

    HTMLElement_Init(&ret->element, &HTMLIFrame_dispex);

    nsres = nsIDOMHTMLElement_QueryInterface(nselem, &IID_nsIDOMHTMLIFrameElement, (void**)&ret->nsiframe);
    if(NS_FAILED(nsres))
        ERR("Could not get nsIDOMHTMLIFrameElement iface: %08x\n", nsres);

    return &ret->element;
}