Ejemplo n.º 1
0
func (t *Thread) writeMemory(addr uintptr, data []byte) (int, error) {
	var (
		vmData = C.LPCVOID(unsafe.Pointer(&data[0]))
		vmAddr = C.LPVOID(addr)
		length = C.SIZE_T(len(data))
		count  C.SIZE_T
	)
	ret := C.WriteProcessMemory(C.HANDLE(t.dbp.os.hProcess), vmAddr, vmData, length, &count)
	if ret == C.FALSE {
		return int(count), fmt.Errorf("could not write memory")
	}
	return int(count), nil
}
Ejemplo n.º 2
0
func (t *Thread) readMemory(addr uintptr, size int) ([]byte, error) {
	if size == 0 {
		return nil, nil
	}
	var (
		buf    = make([]byte, size)
		vmData = C.LPVOID(unsafe.Pointer(&buf[0]))
		vmAddr = C.LPCVOID(addr)
		length = C.SIZE_T(size)
		count  C.SIZE_T
	)
	ret := C.ReadProcessMemory(C.HANDLE(t.dbp.os.hProcess), vmAddr, vmData, length, &count)
	if ret == C.FALSE {
		return nil, fmt.Errorf("could not read memory")
	}
	return buf, nil
}
Ejemplo n.º 3
0
// Sorts 'count' child elements starting at index 'start'.  Uses comparator to define the
// order.  Comparator should return -1, or 0, or 1 to indicate less, equal or greater
func (e *Element) SortChildrenRange(start, count uint, comparator func(*Element, *Element) int) {
	end := start + count
	arg := uintptr(unsafe.Pointer(&comparator))
	if ret := C.HTMLayoutSortElements(e.handle, C.UINT(start), C.UINT(end), (*[0]byte)(unsafe.Pointer(goElementComparator)), C.LPVOID(arg)); ret != HLDOM_OK {
		domPanic(ret, "Failed to sort elements")
	}
}
Ejemplo n.º 4
0
func (e *Element) Select(selector string) []*Element {
	szSelector := C.CString(selector)
	defer C.free(unsafe.Pointer(szSelector))
	results := make([]*Element, 0, 32)
	if ret := C.HTMLayoutSelectElements(e.handle, (*C.CHAR)(szSelector), (*[0]byte)(unsafe.Pointer(goSelectCallback)), C.LPVOID(unsafe.Pointer(&results))); ret != HLDOM_OK {
		domPanic(ret, "Failed to select dom elements, selector: '", selector, "'")
	}
	return results
}
Ejemplo n.º 5
0
func (e *Element) DetachHandler(handler *EventHandler) {
	tag := uintptr(unsafe.Pointer(handler))
	if attachedHandlers, exists := eventHandlers[e.handle]; exists {
		if _, exists := attachedHandlers[handler]; exists {
			if ret := C.HTMLayoutDetachEventHandler(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag)); ret != HLDOM_OK {
				domPanic(ret, "Failed to detach event handler from element")
			}
			delete(attachedHandlers, handler)
			if len(attachedHandlers) == 0 {
				delete(eventHandlers, e.handle)
			}
			return
		}
	}
	panic("cannot detach, handler was not registered")
}
Ejemplo n.º 6
0
func (e *Element) AttachHandler(handler *EventHandler) {
	attachedHandlers, hasAttachments := eventHandlers[e.handle]
	if hasAttachments {
		if _, exists := attachedHandlers[handler]; exists {
			// This exact event handler is already attached to this exact element.
			return
		}
	}

	// Don't let the caller disable ATTACH/DETACH events, otherwise we
	// won't know when to throw out our event handler object
	subscription := handler.Subscription()
	subscription &= ^uint32(DISABLE_INITIALIZATION & 0xffffffff)

	tag := uintptr(unsafe.Pointer(handler))
	if subscription == HANDLE_ALL {
		if ret := C.HTMLayoutAttachEventHandler(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag)); ret != HLDOM_OK {
			domPanic(ret, "Failed to attach event handler to element")
		}
	} else {
		if ret := C.HTMLayoutAttachEventHandlerEx(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag), C.UINT(subscription)); ret != HLDOM_OK {
			domPanic(ret, "Failed to attach event handler to element")
		}
	}

	if !hasAttachments {
		eventHandlers[e.handle] = make(map[*EventHandler]bool, 8)
	}
	eventHandlers[e.handle][handler] = true
}
Ejemplo n.º 7
0
// This is the same as AttachHandler, except that behaviors are singleton instances stored
// in a master map.  They may be shared among many elements since they have no state.
// The only reason we keep a separate set of the behaviors is so that the event handler
// dispatch method can tell if an event handler is a behavior or a regular handler.
func (e *Element) attachBehavior(handler *EventHandler) {
	tag := uintptr(unsafe.Pointer(handler))
	if subscription := handler.Subscription(); subscription == HANDLE_ALL {
		if ret := C.HTMLayoutAttachEventHandler(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag)); ret != HLDOM_OK {
			domPanic(ret, "Failed to attach event handler to element")
		}
	} else {
		if ret := C.HTMLayoutAttachEventHandlerEx(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag), C.UINT(subscription)); ret != HLDOM_OK {
			domPanic(ret, "Failed to attach event handler to element")
		}
	}
}
Ejemplo n.º 8
0
// Finalizer method, only to be called from Release or by
// the Go runtime
func (e *Element) finalize() {
	// Detach handlers
	if attachedHandlers, hasHandlers := eventHandlers[e.handle]; hasHandlers {
		for handler := range attachedHandlers {
			tag := uintptr(unsafe.Pointer(handler))
			C.HTMLayoutDetachEventHandler(e.handle, (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag))
		}
		delete(eventHandlers, e.handle)
	}

	// Release the underlying htmlayout handle
	unuse(e.handle)
	e.handle = BAD_HELEMENT
}
Ejemplo n.º 9
0
func AttachNotifyHandler(hwnd uint32, handler *NotifyHandler) {
	key := uintptr(hwnd)
	// Overwrite if it exists
	notifyHandlers[key] = handler
	C.HTMLayoutSetCallback(C.HWND(C.HANDLE(key)), (*[0]byte)(unsafe.Pointer(goNotifyProc)), C.LPVOID(key))
}
Ejemplo n.º 10
0
func DetachWindowEventHandler(hwnd uint32) {
	key := uintptr(hwnd)
	if handler, exists := windowEventHandlers[hwnd]; exists {
		tag := uintptr(unsafe.Pointer(handler))
		if ret := C.HTMLayoutWindowDetachEventHandler(C.HWND(C.HANDLE(key)), (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag)); ret != HLDOM_OK {
			domPanic(ret, "Failed to detach event handler from window")
		}
		delete(windowEventHandlers, hwnd)
	}
}
Ejemplo n.º 11
0
func AttachWindowEventHandler(hwnd uint32, handler *EventHandler) {
	key := uintptr(hwnd)
	tag := uintptr(unsafe.Pointer(handler))

	if _, exists := windowEventHandlers[hwnd]; exists {
		if ret := C.HTMLayoutWindowDetachEventHandler(C.HWND(C.HANDLE(key)), (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag)); ret != HLDOM_OK {
			domPanic(ret, "Failed to detach event handler from window before adding the new one")
		}
	}

	// Overwrite if it exists
	windowEventHandlers[hwnd] = handler

	// Don't let the caller disable ATTACH/DETACH events, otherwise we
	// won't know when to throw out our event handler object
	subscription := handler.Subscription()
	subscription &= ^uint32(DISABLE_INITIALIZATION & 0xffffffff)

	if ret := C.HTMLayoutWindowAttachEventHandler(C.HWND(C.HANDLE(key)), (*[0]byte)(unsafe.Pointer(goElementProc)), C.LPVOID(tag), C.UINT(subscription)); ret != HLDOM_OK {
		domPanic(ret, "Failed to attach event handler to window")
	}
}
Ejemplo n.º 12
0
// Creates the window. This function expects not to be called on a ContextThread
func (wi *windowInternal) initialize(monitor *Monitor, mode VideoMode, title string, style WindowStyle) ThreadError {
	// Compute position and size
	screenDC := C.GetDC(nil)
	width := C.int(mode.Width)
	height := C.int(mode.Height)
	left := (C.GetDeviceCaps(screenDC, C.HORZRES) - width) / 2
	top := (C.GetDeviceCaps(screenDC, C.VERTRES) - height) / 2
	C.ReleaseDC(nil, screenDC)

	// Choose the window style according to the Style parameter
	win32Style := C.DWORD(C.WS_VISIBLE)
	if style == WindowStyleNone {
		win32Style |= C.WS_POPUP
	} else {
		if style&WindowStyleTitlebar != 0 {
			win32Style |= C.WS_CAPTION | C.WS_MINIMIZEBOX
		}
		if style&WindowStyleResize != 0 {
			win32Style |= C.WS_THICKFRAME | C.WS_MAXIMIZEBOX
		}
		if style&WindowStyleClose != 0 {
			win32Style |= C.WS_SYSMENU
		}
	}

	// In windowed mode, adjust width and height so that window will have the requested client area
	fullscreen := style&WindowStyleFullscreen != 0
	if !fullscreen {
		rectangle := C.RECT{
			left:   C.LONG(left),
			top:    C.LONG(top),
			right:  C.LONG(left + width),
			bottom: C.LONG(top + height),
		}
		C.__AdjustWindowRect(&rectangle, win32Style, C.FALSE)
		left = C.int(rectangle.left)
		top = C.int(rectangle.top)
		width = C.int(rectangle.right - rectangle.left)
		height = C.int(rectangle.bottom - rectangle.top)
	}
	wTitle, _ := utf16Convert(title)
	wi.window.Handle = C.CreateWindowExW(0, className, wTitle, win32Style, left, top, width, height, nil, nil, windowClass.hInstance, C.LPVOID(wi))

	// Switch to fullscreen if requested
	if fullscreen {
		wi.switchToFullscreen(monitor, mode)
	}

	return nil
}