C++ IHTMLDOMNode_QueryInterface函数代码示例

static HRESULT WINAPI HTMLFormElement_QueryInterface(IHTMLFormElement *iface,
        REFIID riid, void **ppv)
{
    HTMLFormElement *This = HTMLFORM_THIS(iface);

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

static HRESULT WINAPI HTMLDOMTextNode_QueryInterface(IHTMLDOMTextNode *iface,
                                                 REFIID riid, void **ppv)
{
    HTMLDOMTextNode *This = impl_from_IHTMLDOMTextNode(iface);

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

static HRESULT WINAPI HTMLTextAreaElement_get_form(IHTMLTextAreaElement *iface, IHTMLFormElement **p)
{
    HTMLTextAreaElement *This = impl_from_IHTMLTextAreaElement(iface);
    nsIDOMHTMLFormElement *nsform;
    nsIDOMNode *nsnode;
    HTMLDOMNode *node;
    nsresult nsres;
    HRESULT hres;

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

    nsres = nsIDOMHTMLTextAreaElement_GetForm(This->nstextarea, &nsform);
    assert(nsres == NS_OK);

    if(!nsform) {
        *p = NULL;
        return S_OK;
    }

    nsres = nsIDOMHTMLFormElement_QueryInterface(nsform, &IID_nsIDOMNode, (void**)&nsnode);
    nsIDOMHTMLFormElement_Release(nsform);
    assert(nsres == NS_OK);

    hres = get_node(This->element.node.doc, nsnode, TRUE, &node);
    nsIDOMNode_Release(nsnode);
    if(FAILED(hres))
        return hres;

    hres = IHTMLDOMNode_QueryInterface(&node->IHTMLDOMNode_iface, &IID_IHTMLFormElement, (void**)p);
    IHTMLDOMNode_Release(&node->IHTMLDOMNode_iface);
    return hres;
}

static HRESULT WINAPI HTMLFormElement_QueryInterface(IHTMLFormElement *iface,
        REFIID riid, void **ppv)
{
    HTMLFormElement *This = impl_from_IHTMLFormElement(iface);

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

static HRESULT WINAPI HTMLDocument3_get_documentElement(IHTMLDocument3 *iface, IHTMLElement **p)
{
    HTMLDocument *This = HTMLDOC3_THIS(iface);
    nsIDOMDocument *nsdoc;
    HTMLDOMNode *node;
    nsresult nsres;

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

    if(!This->nscontainer) {
        *p = NULL;
        return S_OK;
    }

    nsres = nsIWebNavigation_GetDocument(This->nscontainer->navigation, &nsdoc);
    if(NS_FAILED(nsres))
        ERR("GetDocument failed: %08lx\n", nsres);

    if(nsdoc) {
        node = get_node(This, (nsIDOMNode*)nsdoc);
        nsIDOMDocument_Release(nsdoc);

        IHTMLDOMNode_QueryInterface(HTMLDOMNODE(node), &IID_IHTMLElement, (void**)p);
    }else {
        *p = NULL;
    }

    return S_OK;
}

static HRESULT WINAPI HTMLTableRow_QueryInterface(IHTMLTableRow *iface,
        REFIID riid, void **ppv)
{
    HTMLTableRow *This = HTMLTABLEROW_THIS(iface);

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

static HRESULT WINAPI HTMLDOMTextNode_QueryInterface(IHTMLDOMTextNode *iface,
                                                 REFIID riid, void **ppv)
{
    HTMLDOMTextNode *This = HTMLTEXT_THIS(iface);

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

static HRESULT WINAPI HTMLFrameElement3_QueryInterface(IHTMLFrameElement3 *iface,
        REFIID riid, void **ppv)
{
    HTMLFrameElement *This = impl_from_IHTMLFrameElement3(iface);

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

static HRESULT WINAPI HTMLDocument3_get_documentElement(IHTMLDocument3 *iface, IHTMLElement **p)
{
    HTMLDocument *This = HTMLDOC3_THIS(iface);
    nsIDOMElement *nselem = NULL;
    HTMLDOMNode *node;
    nsresult nsres;

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

    if(This->window->readystate == READYSTATE_UNINITIALIZED) {
        *p = NULL;
        return S_OK;
    }

    if(!This->doc_node->nsdoc) {
        WARN("NULL nsdoc\n");
        return E_UNEXPECTED;
    }

    nsres = nsIDOMHTMLDocument_GetDocumentElement(This->doc_node->nsdoc, &nselem);
    if(NS_FAILED(nsres)) {
        ERR("GetDocumentElement failed: %08x\n", nsres);
        return E_FAIL;
    }

    if(nselem) {
        node = get_node(This->doc_node, (nsIDOMNode *)nselem, TRUE);
        nsIDOMElement_Release(nselem);
        IHTMLDOMNode_QueryInterface(HTMLDOMNODE(node), &IID_IHTMLElement, (void**)p);
    }else {
        *p = NULL;
    }

    return S_OK;
}

static HRESULT WINAPI HTMLObjectElement2_QueryInterface(IHTMLObjectElement2 *iface,
        REFIID riid, void **ppv)
{
    HTMLObjectElement *This = impl_from_IHTMLObjectElement2(iface);

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

static HRESULT WINAPI HTMLEventObj_get_srcElement(IHTMLEventObj *iface, IHTMLElement **p)
{
    HTMLEventObj *This = impl_from_IHTMLEventObj(iface);

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

    return IHTMLDOMNode_QueryInterface(&This->target->IHTMLDOMNode_iface, &IID_IHTMLElement,
            (void**)p);
}

static HRESULT WINAPI HTMLOptionElementFactory_create(IHTMLOptionElementFactory *iface,
        VARIANT text, VARIANT value, VARIANT defaultselected, VARIANT selected,
        IHTMLOptionElement **optelem)
{
    HTMLOptionElementFactory *This = impl_from_IHTMLOptionElementFactory(iface);
    nsIDOMHTMLElement *nselem;
    HTMLDOMNode *node;
    HRESULT hres;

    static const PRUnichar optionW[] = {'O','P','T','I','O','N',0};

    TRACE("(%p)->(%s %s %s %s %p)\n", This, debugstr_variant(&text), debugstr_variant(&value),
          debugstr_variant(&defaultselected), debugstr_variant(&selected), optelem);

    if(!This->window || !This->window->doc) {
        WARN("NULL doc\n");
        return E_UNEXPECTED;
    }

    *optelem = NULL;

    hres = create_nselem(This->window->doc, optionW, &nselem);
    if(FAILED(hres))
        return hres;

    hres = get_node(This->window->doc, (nsIDOMNode*)nselem, TRUE, &node);
    nsIDOMHTMLElement_Release(nselem);
    if(FAILED(hres))
        return hres;

    hres = IHTMLDOMNode_QueryInterface(&node->IHTMLDOMNode_iface,
            &IID_IHTMLOptionElement, (void**)optelem);
    node_release(node);

    if(V_VT(&text) == VT_BSTR)
        IHTMLOptionElement_put_text(*optelem, V_BSTR(&text));
    else if(V_VT(&text) != VT_EMPTY)
        FIXME("Unsupported text %s\n", debugstr_variant(&text));

    if(V_VT(&value) == VT_BSTR)
        IHTMLOptionElement_put_value(*optelem, V_BSTR(&value));
    else if(V_VT(&value) != VT_EMPTY)
        FIXME("Unsupported value %s\n", debugstr_variant(&value));

    if(V_VT(&defaultselected) != VT_EMPTY)
        FIXME("Unsupported defaultselected %s\n", debugstr_variant(&defaultselected));
    if(V_VT(&selected) != VT_EMPTY)
        FIXME("Unsupported selected %s\n", debugstr_variant(&selected));

    return S_OK;
}

static HRESULT WINAPI HTMLSelectElement_get_form(IHTMLSelectElement *iface, IHTMLFormElement **p)
{
    HTMLSelectElement *This = impl_from_IHTMLSelectElement(iface);
    nsIDOMHTMLFormElement *nsform;
    nsIDOMNode *form_node;
    HTMLDOMNode *node;
    HRESULT hres;
    nsresult nsres;

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

    if(!p)
        return E_POINTER;

    nsres = nsIDOMHTMLSelectElement_GetForm(This->nsselect, &nsform);
    FIXME("get form %08x : %p\n", nsres, nsform);
    if (NS_FAILED(nsres)) {
        ERR("GetForm failed: %08x, nsform: %p\n", nsres, nsform);
        *p = NULL;
        return E_FAIL;
    }
    if (nsform == NULL) {
        TRACE("nsform not found\n");
        *p = NULL;
        return S_OK;
    }

    nsres = nsIDOMHTMLFormElement_QueryInterface(nsform, &IID_nsIDOMNode, (void**)&form_node);
    nsIDOMHTMLFormElement_Release(nsform);
    assert(nsres == NS_OK);

    hres = get_node(This->element.node.doc, form_node, TRUE, &node);
    nsIDOMNode_Release(form_node);
    if (FAILED(hres))
        return hres;

    hres = IHTMLDOMNode_QueryInterface(&node->IHTMLDOMNode_iface, &IID_IHTMLElement, (void**)p);

    node_release(node);
    return hres;
}

static HRESULT WINAPI HTMLElement2_insertAdjacentElement(IHTMLElement2 *iface, BSTR where,
        IHTMLElement *insertedElement, IHTMLElement **inserted)
{
    HTMLElement *This = impl_from_IHTMLElement2(iface);
    HTMLDOMNode *ret_node;
    HTMLElement *elem;
    HRESULT hres;

    TRACE("(%p)->(%s %p %p)\n", This, debugstr_w(where), insertedElement, inserted);

    elem = unsafe_impl_from_IHTMLElement(insertedElement);
    if(!elem)
        return E_INVALIDARG;

    hres = insert_adjacent_node(This, where, elem->node.nsnode, &ret_node);
    if(FAILED(hres))
        return hres;

    hres = IHTMLDOMNode_QueryInterface(&ret_node->IHTMLDOMNode_iface, &IID_IHTMLElement, (void**)inserted);
    IHTMLDOMNode_Release(&ret_node->IHTMLDOMNode_iface);
    return hres;
}

static HRESULT WINAPI SVGTextContentElement_QueryInterface(ISVGTextContentElement *iface,
        REFIID riid, void **ppv)
{
    SVGTextContentElement *This = impl_from_ISVGTextContentElement(iface);
    return IHTMLDOMNode_QueryInterface(&This->svg_element->element.node.IHTMLDOMNode_iface, riid, ppv);
}