func windowClientBounds(hwnd win.HWND) Rectangle {
var r win.RECT
if !win.GetClientRect(hwnd, &r) {
lastError("GetClientRect")
return Rectangle{}
}
return Rectangle{
int(r.Left),
int(r.Top),
int(r.Right - r.Left),
int(r.Bottom - r.Top),
}
}
func NewWebView(parent Container) (*WebView, error) {
if hr := win.OleInitialize(); hr != win.S_OK && hr != win.S_FALSE {
return nil, newError(fmt.Sprint("OleInitialize Error: ", hr))
}
wv := &WebView{
clientSite: webViewIOleClientSite{
IOleClientSite: win.IOleClientSite{
LpVtbl: webViewIOleClientSiteVtbl,
},
inPlaceSite: webViewIOleInPlaceSite{
IOleInPlaceSite: win.IOleInPlaceSite{
LpVtbl: webViewIOleInPlaceSiteVtbl,
},
inPlaceFrame: webViewIOleInPlaceFrame{
IOleInPlaceFrame: win.IOleInPlaceFrame{
LpVtbl: webViewIOleInPlaceFrameVtbl,
},
},
},
docHostUIHandler: webViewIDocHostUIHandler{
IDocHostUIHandler: win.IDocHostUIHandler{
LpVtbl: webViewIDocHostUIHandlerVtbl,
},
},
webBrowserEvents2: webViewDWebBrowserEvents2{
DWebBrowserEvents2: win.DWebBrowserEvents2{
LpVtbl: webViewDWebBrowserEvents2Vtbl,
},
},
},
}
if err := InitWidget(
wv,
parent,
webViewWindowClass,
win.WS_CLIPCHILDREN|win.WS_VISIBLE,
0); err != nil {
return nil, err
}
wv.clientSite.inPlaceSite.inPlaceFrame.webView = wv
succeeded := false
defer func() {
if !succeeded {
wv.Dispose()
}
}()
var classFactoryPtr unsafe.Pointer
if hr := win.CoGetClassObject(&win.CLSID_WebBrowser, win.CLSCTX_INPROC_HANDLER|win.CLSCTX_INPROC_SERVER, nil, &win.IID_IClassFactory, &classFactoryPtr); win.FAILED(hr) {
return nil, errorFromHRESULT("CoGetClassObject", hr)
}
classFactory := (*win.IClassFactory)(classFactoryPtr)
defer classFactory.Release()
var browserObjectPtr unsafe.Pointer
if hr := classFactory.CreateInstance(nil, &win.IID_IOleObject, &browserObjectPtr); win.FAILED(hr) {
return nil, errorFromHRESULT("IClassFactory.CreateInstance", hr)
}
browserObject := (*win.IOleObject)(browserObjectPtr)
wv.browserObject = browserObject
if hr := browserObject.SetClientSite((*win.IOleClientSite)(unsafe.Pointer(&wv.clientSite))); win.FAILED(hr) {
return nil, errorFromHRESULT("IOleObject.SetClientSite", hr)
}
if hr := browserObject.SetHostNames(syscall.StringToUTF16Ptr("Walk.WebView"), nil); win.FAILED(hr) {
return nil, errorFromHRESULT("IOleObject.SetHostNames", hr)
}
if hr := win.OleSetContainedObject((*win.IUnknown)(unsafe.Pointer(browserObject)), true); win.FAILED(hr) {
return nil, errorFromHRESULT("OleSetContainedObject", hr)
}
var rect win.RECT
win.GetClientRect(wv.hWnd, &rect)
if hr := browserObject.DoVerb(win.OLEIVERB_SHOW, nil, (*win.IOleClientSite)(unsafe.Pointer(&wv.clientSite)), -1, wv.hWnd, &rect); win.FAILED(hr) {
return nil, errorFromHRESULT("IOleObject.DoVerb", hr)
}
var cpcPtr unsafe.Pointer
if hr := browserObject.QueryInterface(&win.IID_IConnectionPointContainer, &cpcPtr); win.FAILED(hr) {
return nil, errorFromHRESULT("IOleObject.QueryInterface(IID_IConnectionPointContainer)", hr)
}
cpc := (*win.IConnectionPointContainer)(cpcPtr)
defer cpc.Release()
var cp *win.IConnectionPoint
if hr := cpc.FindConnectionPoint(&win.DIID_DWebBrowserEvents2, &cp); win.FAILED(hr) {
return nil, errorFromHRESULT("IConnectionPointContainer.FindConnectionPoint(DIID_DWebBrowserEvents2)", hr)
}
defer cp.Release()
var cookie uint32
if hr := cp.Advise(unsafe.Pointer(&wv.clientSite.webBrowserEvents2), &cookie); win.FAILED(hr) {
return nil, errorFromHRESULT("IConnectionPoint.Advise", hr)
}
wv.onResize()
wv.MustRegisterProperty("URL", NewProperty(
func() interface{} {
url, _ := wv.URL()
return url
},
func(v interface{}) error {
return wv.SetURL(v.(string))
},
wv.urlChangedPublisher.Event()))
succeeded = true
return wv, nil
}