Initial community commit

1 files changed, 994 insertions, 0 deletions

diff --git a/Src/Plugins/Library/ml_devices/managerView.cpp b/Src/Plugins/Library/ml_devices/managerView.cpp
new file mode 100644
index 00000000..bba9679b
--- /dev/null
+++ b/Src/Plugins/Library/ml_devices/managerView.cpp
@@ -0,0 +1,994 @@
+#include "main.h"
+#include "./managerView.h"
+
+#define MANAGERVIEW_PROP		L"NullsoftDevicesManagerViewProp"
+
+#define VIEW_OFFSET_LEFT_PX					0
+#define VIEW_OFFSET_TOP_PX					0
+#define VIEW_OFFSET_RIGHT_PX				2
+#define VIEW_OFFSET_BOTTOM_PX				-1
+
+#define DISCOVER_BUTTON_MIN_HEIGHT_PX		18	
+#define DISCOVER_BUTTON_MIN_WIDTH_PX		72
+#define DISCOVER_BUTTON_EXTRA_SPACE_DLU		8
+#define DISCOVER_BUTTON_SPACING_RIGHT_DLU	6
+
+#define ZOOM_SLIDER_SPACING_LEFT_DLU		6
+
+#define BOTTOM_BAR_OFFSET_TOP_DLU			2
+
+
+#define MANAGERVIEW_WIDGET_ID				10000
+#define MANAGERVIEW_STATUSBAR_ID			10001
+
+static ATOM MANAGERVIEW_ATOM = 0;
+
+
+typedef 
+enum ManagerViewState
+{
+	MANAGERVIEW_STATE_FROZEN_UI = (1 << 0),
+} WelcomeViewState;
+DEFINE_ENUM_FLAG_OPERATORS(ManagerViewState);
+
+#define MANAGERVIEW_IS_FROZEN(_view) (0 != (MANAGERVIEW_STATE_FROZEN_UI & (_view)->state))
+#define MANAGERVIEW_FREEZE(_view) (((_view)->state) |= MANAGERVIEW_STATE_FROZEN_UI)
+#define MANAGERVIEW_THAW(_view) (((_view)->state) &= ~MANAGERVIEW_STATE_FROZEN_UI)
+
+#define MANAGERVIEW_DLU_TO_HORZ_PX(_view, _dlu) MulDiv((_dlu), (_view)->unitSize.cx, 4)
+#define MANAGERVIEW_DLU_TO_VERT_PX(_view, _dlu) MulDiv((_dlu), (_view)->unitSize.cy, 8)
+
+#define MANAGERVIEW_REGISTER_WIDGET(_widgetWindow) (SetWindowLongPtrW((_widgetWindow), GWLP_ID, MANAGERVIEW_WIDGET_ID))
+#define MANAGERVIEW_WIDGET(_viewWindow)	(GetDlgItem((_viewWindow), MANAGERVIEW_WIDGET_ID))
+#define MANAGERVIEW_STATUS_BAR(_viewWindow)	(GetDlgItem((_viewWindow), MANAGERVIEW_STATUSBAR_ID))
+#define MANAGERVIEW_DISCOVER_BUTTON(_viewWindow)	(GetDlgItem((_viewWindow), IDC_BUTTON_DISCOVER))
+#define MANAGERVIEW_ZOOM_SLIDER(_viewWindow)	(GetDlgItem((_viewWindow), IDC_SLIDER_ZOOM))
+
+typedef struct ManagerView
+{
+	ManagerViewState state;
+	WidgetStyle widgetStyle;
+	HFONT font;
+	HFONT systemFont;
+	COLORREF backColor;
+	COLORREF textColor;
+	COLORREF borderColor;
+	HBRUSH backBrush;
+	SIZE unitSize;
+	BOOL devicesPresent;
+	size_t deviceHandler;
+	HRGN updateRegion;
+	POINT updateOffset;
+	unsigned int discoveryStatus;
+} ManagerView;
+
+#define MANAGERVIEW(_hwnd) ((ManagerView*)GetPropW((_hwnd), MAKEINTATOM(MANAGERVIEW_ATOM)))
+#define MANAGERVIEW_RET_VOID(_view, _hwnd) { (_view) = MANAGERVIEW((_hwnd)); if (NULL == (_view)) return; }
+#define MANAGERVIEW_RET_VAL(_view, _hwnd, _error) { (_view) = MANAGERVIEW((_hwnd)); if (NULL == (_view)) return (_error); }
+
+static INT_PTR CALLBACK 
+ManagerView_DialogProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+static void CALLBACK
+ManagerView_PluginUnloadCb()
+{
+	if (0 != MANAGERVIEW_ATOM)
+	{
+		GlobalDeleteAtom(MANAGERVIEW_ATOM);
+		MANAGERVIEW_ATOM = 0;
+	}
+}
+
+HWND ManagerView_CreateWindow(HWND parentWindow)
+{
+	if (0 == MANAGERVIEW_ATOM)
+	{
+		MANAGERVIEW_ATOM = GlobalAddAtom(MANAGERVIEW_PROP);
+		if (0 == MANAGERVIEW_ATOM)
+			return NULL;
+
+		Plugin_RegisterUnloadCallback(ManagerView_PluginUnloadCb);
+	}
+
+	HWND hwnd = WASABI_API_CREATEDIALOGPARAMW((INT_PTR)IDD_MANAGER_VIEW, parentWindow,
+											  ManagerView_DialogProc, (LPARAM)0L);
+
+	return hwnd;
+}
+
+static void 
+ManagerView_Layout(HWND hwnd, BOOL redraw)
+{
+	ManagerView *self = NULL;
+	RECT clientRect, elementRect;
+	LONG bottomBarHeight = 0, buttonWidth = 0, sliderWidth = 0;
+
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	GetClientRect(hwnd, &clientRect);
+	clientRect.left += VIEW_OFFSET_LEFT_PX;
+	clientRect.top += VIEW_OFFSET_TOP_PX;
+	clientRect.right -= VIEW_OFFSET_RIGHT_PX;
+	clientRect.bottom -= VIEW_OFFSET_BOTTOM_PX;
+	
+	HDWP hdwp = BeginDeferWindowPos(4);
+	if (NULL == hdwp)
+		return;
+
+	UINT swpFlags = SWP_NOACTIVATE | SWP_NOZORDER;
+	if (FALSE == redraw)
+		swpFlags |= SWP_NOREDRAW;
+
+	HWND buttonWindow = MANAGERVIEW_DISCOVER_BUTTON(hwnd);
+	if (NULL != buttonWindow)
+	{
+		if (FALSE != GetWindowRect(buttonWindow, &elementRect))
+		{
+			wchar_t buffer[128] = {0};
+			GetWindowText(buttonWindow, buffer, ARRAYSIZE(buffer));
+			LRESULT idealSize = MLSkinnedButton_GetIdealSize(buttonWindow, buffer);
+
+			hdwp = DeferWindowPos(hdwp, buttonWindow, NULL, clientRect.left + 1,
+								  clientRect.bottom - WASABI_API_APP->getScaleY(HIWORD(idealSize)) - WASABI_API_APP->getScaleY(1),
+								  RECTWIDTH(elementRect), WASABI_API_APP->getScaleY(HIWORD(idealSize)), swpFlags);
+
+			bottomBarHeight = WASABI_API_APP->getScaleY(HIWORD(idealSize));
+			buttonWidth = RECTWIDTH(elementRect);
+		}
+	}
+
+	HWND sliderWindow = MANAGERVIEW_ZOOM_SLIDER(hwnd);
+	if (NULL != sliderWindow)
+	{
+		if (0 != (WS_VISIBLE & GetWindowStyle(sliderWindow)) && 
+			FALSE != GetWindowRect(sliderWindow, &elementRect))
+		{
+			hdwp = DeferWindowPos(hdwp, sliderWindow, NULL, clientRect.right - RECTWIDTH(elementRect),
+						clientRect.bottom - RECTHEIGHT(elementRect),
+						RECTWIDTH(elementRect), RECTHEIGHT(elementRect), swpFlags);
+			sliderWidth = RECTWIDTH(elementRect);
+		}
+	}
+
+	HWND statusBar = MANAGERVIEW_STATUS_BAR(hwnd);
+	if (NULL != statusBar)
+	{
+		long statusBarHeight = 0;
+		CopyRect(&elementRect, &clientRect);
+
+		if (0 != buttonWidth)
+		{
+			elementRect.left += buttonWidth;
+			elementRect.left += MANAGERVIEW_DLU_TO_HORZ_PX(self, DISCOVER_BUTTON_SPACING_RIGHT_DLU);
+			if (elementRect.left > clientRect.right)
+				elementRect.left = clientRect.right;
+		}
+
+		if (0 != sliderWidth)
+		{
+			elementRect.right -= sliderWidth;
+			elementRect.right -= MANAGERVIEW_DLU_TO_HORZ_PX(self, ZOOM_SLIDER_SPACING_LEFT_DLU);
+			if (elementRect.left > elementRect.right)
+				elementRect.right = elementRect.left;
+		}
+
+		statusBarHeight = STATUSBAR_GET_IDEAL_HEIGHT(statusBar);
+		if (statusBarHeight > bottomBarHeight)
+			statusBarHeight = 0;
+
+		elementRect.top = elementRect.bottom - statusBarHeight - WASABI_API_APP->getScaleY(3);
+		elementRect.bottom = elementRect.top + statusBarHeight;
+
+		hdwp = DeferWindowPos(hdwp, statusBar, NULL, elementRect.left, elementRect.top,
+							  RECTWIDTH(elementRect), RECTHEIGHT(elementRect), swpFlags);
+	}
+
+	HWND widgetWindow = MANAGERVIEW_WIDGET(hwnd);
+	if (NULL != widgetWindow)
+	{
+		CopyRect(&elementRect, &clientRect);
+		if (0 != bottomBarHeight)
+		{
+			elementRect.bottom -= (bottomBarHeight + WASABI_API_APP->getScaleY(4));
+		}
+
+		Graphics_ClampRect(&elementRect, &clientRect);
+
+		if (NULL != hdwp)
+		{
+			hdwp = DeferWindowPos(hdwp, widgetWindow, NULL, elementRect.left, elementRect.top, 
+						RECTWIDTH(elementRect), RECTHEIGHT(elementRect), swpFlags);
+		}
+	}
+
+	if (NULL != hdwp)
+		EndDeferWindowPos(hdwp);
+}
+
+static BOOL
+ManagerView_Paint(HWND hwnd, HDC hdc, const RECT *paintRect, BOOL erase)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VAL(self, hwnd, FALSE);
+
+	if (FALSE != erase)
+	{	
+		HRGN fillRegion;
+		fillRegion = CreateRectRgnIndirect(paintRect);
+		FillRgn(hdc, fillRegion, self->backBrush);			
+		DeleteObject(fillRegion);
+	}
+
+	return TRUE;
+}
+
+static void
+ManagerView_UpdateSkin(HWND hwnd)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	BOOL styleChanged = FALSE;
+	COLORREF color = Graphics_GetSkinColor(WADLG_WNDBG);
+	if (color != self->backColor || NULL == self->backBrush)
+	{
+		self->backColor = color;
+		self->backBrush = CreateSolidBrush(self->backColor);
+		styleChanged = TRUE;
+	}
+
+	color = Graphics_GetSkinColor(WADLG_WNDFG);
+	if (self->textColor != color)
+	{
+		self->textColor = color;
+		styleChanged = TRUE;
+	}
+
+	color = Graphics_GetSkinColor(WADLG_HILITE);
+	if (self->borderColor != color)
+	{
+		self->borderColor = color;
+		styleChanged = TRUE;
+	}
+	
+	if (FALSE != WidgetStyle_UpdateDefaultColors(&self->widgetStyle))
+		 styleChanged = TRUE;
+
+	if (FALSE != styleChanged)
+	{
+		HWND controlWindow = MANAGERVIEW_WIDGET(hwnd);
+		if (NULL != controlWindow)
+		{
+			WIDGET_STYLE_COLOR_CHANGED(controlWindow);
+			InvalidateRect(controlWindow, NULL, TRUE);
+		}
+
+		controlWindow = MANAGERVIEW_STATUS_BAR(hwnd);
+		if (NULL != controlWindow)
+		{
+			STATUSBAR_SET_TEXT_COLOR(controlWindow, self->textColor, FALSE);
+			STATUSBAR_SET_BACK_COLOR(controlWindow, self->backColor, FALSE);
+			STATUSBAR_SET_BACK_BRUSH(controlWindow, self->backBrush, FALSE);
+		}
+	}
+}
+
+static BOOL
+ManagerView_GetIdealButtonSize(HWND buttonWindow, SIZE *buttonSize)
+{
+	if (NULL == buttonWindow || NULL == buttonSize)
+		return FALSE;
+
+	LRESULT skinSize = MLSkinnedButton_GetIdealSize(buttonWindow, NULL);
+	if (0 != skinSize)
+	{
+		buttonSize->cx = LOWORD(skinSize);
+		buttonSize->cy = HIWORD(skinSize);	
+		return TRUE;
+	}
+
+	buttonSize->cx = 0;
+	buttonSize->cy = 0;
+	if (FALSE != SendMessageW(buttonWindow, BCM_GETIDEALSIZE, 0, (LPARAM)buttonSize))
+		return TRUE;
+
+	return FALSE;
+}
+
+static BOOL
+ManagerView_UpdateDiscoverButtonFont(HWND hwnd, HFONT font, SIZE *size)
+{
+	ManagerView *self;
+	SIZE buttonSize;
+
+	MANAGERVIEW_RET_VAL(self, hwnd, FALSE);
+
+	HWND buttonWindow = MANAGERVIEW_DISCOVER_BUTTON(hwnd);
+	if (NULL == buttonWindow)
+		return FALSE;
+
+	SendMessage(buttonWindow, WM_SETFONT, (WPARAM)font, MAKELPARAM(0,0));
+
+	if (FALSE == ManagerView_GetIdealButtonSize(buttonWindow, &buttonSize))
+	{
+		RECT buttonRect;
+		if (FALSE == GetWindowRect(buttonWindow, &buttonRect))
+			return FALSE;
+
+		buttonSize.cx = RECTWIDTH(buttonRect);
+		buttonSize.cy = RECTHEIGHT(buttonRect);
+	}
+
+	buttonSize.cx += MANAGERVIEW_DLU_TO_HORZ_PX(self, DISCOVER_BUTTON_EXTRA_SPACE_DLU);
+
+	if (buttonSize.cx < DISCOVER_BUTTON_MIN_WIDTH_PX)
+		buttonSize.cx = DISCOVER_BUTTON_MIN_WIDTH_PX;
+
+	if (buttonSize.cy < DISCOVER_BUTTON_MIN_HEIGHT_PX)
+		buttonSize.cy = DISCOVER_BUTTON_MIN_HEIGHT_PX;
+
+	BOOL result = SetWindowPos(buttonWindow, NULL, 0, 0, buttonSize.cx, buttonSize.cy, 
+							   SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOMOVE | SWP_NOREDRAW);
+	if (FALSE == result)
+		return FALSE;
+
+	if (NULL != size)
+		*size = buttonSize;
+
+	return TRUE;
+}
+
+static void
+ManagerView_UpdateFont(HWND hwnd, BOOL redraw)
+{
+	HWND controlWindow = NULL;
+	ManagerView *self = NULL;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	if (FALSE == Graphics_GetWindowBaseUnits(hwnd, &self->unitSize.cx, &self->unitSize.cy))
+	{
+		self->unitSize.cx = 6;
+		self->unitSize.cy = 13;
+	}
+
+	if (FALSE != WidgetStyle_UpdateDefaultFonts(&self->widgetStyle, self->font, self->unitSize.cx, self->unitSize.cy))
+	{
+		controlWindow = MANAGERVIEW_WIDGET(hwnd);
+		if (NULL != controlWindow)
+			WIDGET_STYLE_FONT_CHANGED(controlWindow);
+	}
+
+	ManagerView_UpdateDiscoverButtonFont(hwnd, self->font, NULL);
+
+	controlWindow = MANAGERVIEW_STATUS_BAR(hwnd);
+	if (NULL != controlWindow)
+		SendMessage(controlWindow, WM_SETFONT, (WPARAM)self->font, 0L);
+
+	if (NULL != redraw)
+	{
+		SetWindowPos(hwnd, NULL, 0, 0, 0, 0, 
+			SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE |SWP_NOMOVE |SWP_FRAMECHANGED | SWP_NOREDRAW);
+
+		RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_ERASE);
+	}
+}
+
+static void
+ManagerView_UpdateDiscoveryStatus(HWND hwnd, BOOL discoveryActive)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	HWND statusBar = MANAGERVIEW_STATUS_BAR(hwnd);
+	if (NULL == statusBar)
+		return;
+
+	if (FALSE != discoveryActive)
+	{
+		wchar_t buffer[512] = {0};
+
+		WASABI_API_LNGSTRINGW_BUF(IDS_STATUS_DISCOVERY_ACTIVE, buffer, ARRAYSIZE(buffer));
+
+		if (STATUS_ERROR == self->discoveryStatus)
+			self->discoveryStatus = STATUSBAR_ADD_STATUS(statusBar, buffer);
+		else
+		{
+			STATUSBAR_SET_STATUS_TEXT(statusBar, self->discoveryStatus, buffer);
+			STATUSBAR_MOVE_STATUS(statusBar, self->discoveryStatus, STATUS_MOVE_TOP);
+		}
+	}
+	else
+	{
+		if (STATUS_ERROR != self->discoveryStatus)
+		{
+			STATUSBAR_REMOVE_STATUS(statusBar, self->discoveryStatus);
+			self->discoveryStatus = STATUS_ERROR;
+		}
+	}
+}
+
+static HWND 
+ManagerView_CreateServiceErrorWidget(HWND hwnd)
+{
+	return InfoWidget_CreateWindow(WIDGET_TYPE_SERVICE_ERROR, 
+								   MAKEINTRESOURCE(IDS_INFOWIDGET_TITLE),
+								   MAKEINTRESOURCE(IDS_DEVICE_SERVICE_NOT_FOUND),
+								   NULL,
+								   hwnd, 0, 0, 0, 0, TRUE, 0);
+}
+
+static HWND
+ManagerView_CreateViewErrorWidget(HWND hwnd)
+{
+	return InfoWidget_CreateWindow(WIDGET_TYPE_VIEW_ERROR, 
+								   MAKEINTRESOURCE(IDS_INFOWIDGET_TITLE),
+								   MAKEINTRESOURCE(IDS_CREATE_MANAGER_VIEW_FAILED),
+								   NULL,
+								   hwnd, 0, 0, 0, 0, TRUE, 0);
+}
+
+static HWND
+ManagerView_UpdateWidget(HWND hwnd)
+{
+	ManagerView *self;
+	unsigned int widgetType, requiredType;
+	unsigned int windowStyle;
+
+	MANAGERVIEW_RET_VAL(self, hwnd, NULL);
+
+	HWND widgetWindow = MANAGERVIEW_WIDGET(hwnd);
+	if (NULL == widgetWindow)
+		widgetType = WIDGET_TYPE_UNKNOWN;
+	else
+		widgetType = WIDGET_GET_TYPE(widgetWindow);
+
+	if (FALSE != self->devicesPresent)
+		requiredType = WIDGET_TYPE_LIST;
+	else
+	{
+		requiredType = (NULL != WASABI_API_DEVICES) ?
+						WIDGET_TYPE_WELCOME :
+						WIDGET_TYPE_SERVICE_ERROR;
+	}
+
+	if (widgetType == requiredType)
+		return widgetWindow;
+
+	windowStyle = GetWindowStyle(hwnd);
+	if (0 != (WS_VISIBLE & windowStyle))
+		SetWindowStyle(hwnd, windowStyle & ~WS_VISIBLE);
+
+	if (NULL != widgetWindow)
+	{
+		SetWindowLongPtr(widgetWindow, GWLP_ID, 0);
+		WIDGET_FREEZE(widgetWindow);
+		DestroyWindow(widgetWindow);
+	}
+
+	switch(requiredType)
+	{
+		case WIDGET_TYPE_SERVICE_ERROR:
+			widgetWindow = ManagerView_CreateServiceErrorWidget(hwnd);
+			break;
+		case WIDGET_TYPE_WELCOME:
+			widgetWindow = WelcomeWidget_CreateWindow(hwnd, 0, 0, 0, 0, TRUE, 0);
+			break;
+		case WIDGET_TYPE_LIST:
+			widgetWindow = ListWidget_CreateWindow(hwnd, 0, 0, 0, 0, TRUE, 0);
+			break;
+		default:
+			widgetWindow = NULL;
+			break;
+	}
+
+	if (NULL == widgetWindow)
+		widgetWindow = ManagerView_CreateViewErrorWidget(hwnd);
+
+	if (NULL != widgetWindow)
+	{
+		if (FALSE != MANAGERVIEW_IS_FROZEN(self))
+			WIDGET_FREEZE(widgetWindow);
+
+		MANAGERVIEW_REGISTER_WIDGET(widgetWindow);
+
+		WIDGET_SET_STYLE(widgetWindow, &self->widgetStyle);
+	}
+
+	SetWindowPos(hwnd, NULL, 0, 0, 0, 0, 
+				 SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOREDRAW | SWP_FRAMECHANGED);
+
+	if (NULL != widgetWindow)
+	{
+		ShowWindow(widgetWindow, SW_SHOWNA);
+
+		SetWindowPos(widgetWindow, HWND_TOP, 0, 0, 0, 0, 
+						SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
+	}
+
+	if (0 != (WS_VISIBLE & windowStyle))
+	{
+		windowStyle = GetWindowStyle(hwnd);
+		if (0 == (WS_VISIBLE & windowStyle))
+		{
+			windowStyle |= WS_VISIBLE;
+			SetWindowStyle(hwnd, windowStyle);
+		}
+	}
+
+	if (0 != (WS_VISIBLE & windowStyle))
+	{
+		RECT rect;
+		GetClientRect(hwnd, &rect);
+
+		RedrawWindow(hwnd, &rect, NULL, 
+			RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ERASENOW | RDW_ALLCHILDREN);
+	}
+
+	return widgetWindow;
+}
+
+static void
+ManagerView_StartDiscovery(HWND hwnd, BOOL silent)
+{
+	Plugin_BeginDiscovery();
+}
+
+static BOOL
+ManagerView_CheckDevicesPresent()
+{
+	ifc_deviceobjectenum *enumerator = 0;
+	ifc_deviceobject *object = 0;
+	ifc_device *device = 0;
+
+	BOOL devicesPresent = FALSE;
+
+	if (NULL == WASABI_API_DEVICES || 
+		FAILED(WASABI_API_DEVICES->DeviceEnumerate(&enumerator)))
+	{
+		return FALSE;
+	}
+
+	while(S_OK == enumerator->Next(&object, 1, NULL))
+	{
+		if (SUCCEEDED(object->QueryInterface(IFC_Device, (void**)&device)))
+		{
+			if(FALSE == device->GetHidden() &&
+			   // excludes 'cloud' devices from appearing
+			   lstrcmpiA(device->GetConnection(), "cloud"))
+				devicesPresent = TRUE;
+		
+			device->Release();
+		}
+		object->Release();
+
+		if (FALSE != devicesPresent)
+			break;
+	}
+	enumerator->Release();
+	
+	return devicesPresent;
+}
+
+static void
+ManagerView_AddDevice(HWND hwnd, ifc_device *device)
+{
+	ManagerView *self;
+
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	if (FALSE != self->devicesPresent)
+		return;
+
+	self->devicesPresent = ManagerView_CheckDevicesPresent();
+	if (FALSE != self->devicesPresent)
+		ManagerView_UpdateWidget(hwnd);
+}
+
+static void
+ManagerView_RemoveDevice(HWND hwnd, ifc_device *device)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	if (FALSE == self->devicesPresent)
+		return;
+
+	self->devicesPresent = ManagerView_CheckDevicesPresent();
+	if (FALSE == self->devicesPresent)
+		ManagerView_UpdateWidget(hwnd);
+}
+
+static void
+ManagerView_DeviceCb(ifc_device *device, DeviceEvent eventId, void *user)
+{
+	HWND hwnd = (HWND)user;
+
+	switch(eventId)
+	{
+		case Event_DeviceAdded:
+			ManagerView_AddDevice(hwnd, device);
+			break;
+
+		case Event_DeviceRemoved:
+			ManagerView_RemoveDevice(hwnd, device);
+			break;
+	}
+}
+
+static void
+ManagerView_DiscoveryCb(api_devicemanager *manager, DeviceDiscoveryEvent eventId, void *user)
+{
+	HWND hwnd = (HWND)user;
+
+	switch(eventId)
+	{
+		case Event_DiscoveryStarted:
+			ManagerView_UpdateDiscoveryStatus(hwnd, TRUE);
+			break;
+
+		case Event_DiscoveryFinished:
+			ManagerView_UpdateDiscoveryStatus(hwnd, FALSE);
+			break;
+	}
+}
+
+static BOOL
+ManagerView_RegisterDeviceHandler(HWND hwnd)
+{
+	ManagerView *self;
+	DeviceEventCallbacks callbacks;
+
+	MANAGERVIEW_RET_VAL(self, hwnd, FALSE);
+
+	if (0 != self->deviceHandler)
+		return FALSE;
+
+	HWND eventRelay = Plugin_GetEventRelayWindow();
+	if (NULL == eventRelay)
+		return FALSE;
+
+	ZeroMemory(&callbacks, sizeof(callbacks));
+	callbacks.deviceCb = ManagerView_DeviceCb;
+	callbacks.discoveryCb = ManagerView_DiscoveryCb;
+
+	self->deviceHandler = EVENTRELAY_REGISTER_HANDLER(eventRelay, &callbacks, hwnd); 
+	return (0 != self->deviceHandler);
+}
+
+static void
+ManagerView_OnDisplayChanged(HWND hwnd, INT bpp, INT dpi_x, INT dpi_y)
+{
+	ManagerView *self = NULL;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	if (FALSE != MANAGERVIEW_IS_FROZEN(self))
+		return;
+
+	ManagerView_UpdateSkin(hwnd);
+
+	RECT rc;
+	GetClientRect(hwnd, &rc);
+	RedrawWindow(hwnd, &rc, NULL, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN | RDW_ERASENOW | RDW_UPDATENOW);
+
+	ManagerView_Layout(hwnd, TRUE);
+}
+
+static INT_PTR 
+ManagerView_OnInitDialog(HWND hwnd, HWND focusWindow, LPARAM param)
+{
+	ManagerView *self = (ManagerView*)malloc(sizeof(ManagerView));
+	if (NULL != self) 
+	{
+		ZeroMemory(self, sizeof(ManagerView));
+		if (FALSE == SetProp(hwnd, MAKEINTATOM(MANAGERVIEW_ATOM), self))
+		{
+			free(self);
+			self = NULL;
+		}
+	}
+
+	if (NULL == self)
+	{
+		DestroyWindow(hwnd);
+		return 0;
+	}
+
+	MANAGERVIEW_FREEZE(self);
+
+	ManagerView_RegisterDeviceHandler(hwnd);
+
+	self->devicesPresent = ManagerView_CheckDevicesPresent();
+
+	MLSkinWindow2(Plugin_GetLibraryWindow(), hwnd, SKINNEDWND_TYPE_DIALOG, 
+				  SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS);
+
+	HWND discoverButton = MANAGERVIEW_DISCOVER_BUTTON(hwnd);
+	if (NULL != discoverButton)
+	{		
+		MLSkinWindow2(Plugin_GetLibraryWindow(), discoverButton, SKINNEDWND_TYPE_BUTTON, 
+					  SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS);
+
+		ShowWindow(discoverButton, SW_SHOW);
+		EnableWindow(discoverButton, TRUE);
+	}
+
+	HWND statusBar = StatusBar_CreateWindow(0, NULL, WS_VISIBLE, 0, 0, 0, 0, hwnd, MANAGERVIEW_STATUSBAR_ID);
+	if (NULL != statusBar)
+	{		
+		MLSkinWindow2(Plugin_GetLibraryWindow(), statusBar, SKINNEDWND_TYPE_AUTO, 
+					  SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS);
+	}
+
+	self->discoveryStatus = STATUS_ERROR;
+
+	if (S_OK == WASABI_API_DEVICES->IsDiscoveryActive())
+		ManagerView_UpdateDiscoveryStatus(hwnd, TRUE);
+
+	ManagerView_UpdateFont(hwnd, FALSE);
+	ManagerView_UpdateSkin(hwnd);
+
+	HWND widgetWindow = ManagerView_UpdateWidget(hwnd);
+	MANAGERVIEW_THAW(self);
+
+	if (NULL != widgetWindow)
+		WIDGET_THAW(widgetWindow);
+
+	PostMessage(hwnd, WM_DISPLAYCHANGE, 0, 0);
+
+	return 0;
+}
+
+static void
+ManagerView_OnDestroy(HWND hwnd)
+{
+	ManagerView *self = MANAGERVIEW(hwnd);
+	RemoveProp(hwnd, MAKEINTATOM(MANAGERVIEW_ATOM));
+
+	if (NULL == self) 
+		return;
+
+	MANAGERVIEW_FREEZE(self);
+
+	if (0 != self->deviceHandler)
+	{
+		HWND eventRelay = Plugin_GetEventRelayWindow();
+		if (NULL != eventRelay)
+		{
+			EVENTRELAY_UNREGISTER_HANDLER(eventRelay, self->deviceHandler); 
+		}
+	}
+
+	if (NULL != self->systemFont)
+		DeleteObject(self->systemFont);
+
+	if (NULL != self->backBrush)
+		DeleteObject(self->backBrush);
+
+	WidgetStyle_Free(&self->widgetStyle);
+	free(self);
+}
+
+static LRESULT
+ManagerView_OnColorDialog(HWND hwnd, HDC hdc)
+{
+	ManagerView *self;
+	self = MANAGERVIEW(hwnd);
+
+	if (NULL == self)
+		return DefWindowProcW(hwnd, WM_CTLCOLORDLG, (WPARAM)hdc, (LPARAM)hwnd);
+
+	if (NULL != hdc)
+	{
+		SetTextColor(hdc, self->textColor);
+		SetBkColor(hdc, self->backColor);
+	}
+
+	return (LRESULT)self->backBrush;
+}
+
+static void
+ManagerView_OnWindowPosChanged(HWND hwnd, WINDOWPOS *windowPos)
+{
+	if ((SWP_NOSIZE | SWP_NOMOVE) != ((SWP_NOSIZE | SWP_NOMOVE) & windowPos->flags) || 
+		(SWP_FRAMECHANGED & windowPos->flags))
+	{
+		ManagerView *self;
+		MANAGERVIEW_RET_VOID(self, hwnd);
+
+		if (FALSE != MANAGERVIEW_IS_FROZEN(self))
+			return;
+
+		ManagerView_Layout(hwnd, !(SWP_NOREDRAW & windowPos->flags));
+	}
+}
+
+static void
+ManagerView_OnPaint(HWND hwnd)
+{
+	PAINTSTRUCT ps;
+
+	if (NULL != BeginPaint(hwnd, &ps))
+	{		
+		ManagerView_Paint(hwnd, ps.hdc, &ps.rcPaint, ps.fErase);
+		EndPaint(hwnd, &ps);
+	}
+}
+
+static void 
+ManagerView_OnPrintClient(HWND hwnd, HDC hdc, UINT options)
+{	
+	RECT clientRect;
+	if (GetClientRect(hwnd, &clientRect))
+	{
+		ManagerView_Paint(hwnd, hdc, &clientRect, TRUE);
+	}
+}
+
+static void
+ManagerView_OnSetFont(HWND hwnd, HFONT font, BOOL redraw)
+{
+	ManagerView *self = NULL;
+	LOGFONTW prevFont = {0}, newFont = {0};
+
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	if (NULL == self->font || 
+		sizeof(LOGFONTW) != GetObjectW(self->font, sizeof(prevFont), &prevFont))
+	{
+		ZeroMemory(&prevFont, sizeof(prevFont));
+	}
+
+	self->font = font;
+	if (NULL == self->font)
+	{
+		if (NULL == self->systemFont)
+			self->systemFont = Graphics_CreateSysFont();
+	}
+
+	if (NULL == self->font || 
+		sizeof(newFont) != GetObjectW(self->font, sizeof(newFont), &newFont))
+	{
+		ZeroMemory(&newFont, sizeof(newFont));
+	}
+
+	if (0 == memcmp(&prevFont, &newFont, sizeof(prevFont)) ||
+		FALSE != MANAGERVIEW_IS_FROZEN(self))
+	{
+		redraw = FALSE;
+	}
+
+	ManagerView_UpdateFont(hwnd, redraw);
+}
+
+static HFONT
+ManagerView_OnGetFont(HWND hwnd)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VAL(self, hwnd, NULL);
+
+	return self->font;
+}
+
+static void
+ManagerView_OnCommand(HWND hwnd, INT commandId, INT eventId, HWND controlWindow)
+{
+	switch(commandId)
+	{
+		case IDC_BUTTON_DISCOVER:
+			switch(eventId)
+			{
+				case BN_CLICKED:
+					ManagerView_StartDiscovery(hwnd, FALSE);
+					break;
+			}
+			break;
+	}
+}
+
+static void
+ManagerView_OnZoomSliderPosChanging(HWND hwnd, NMTRBTHUMBPOSCHANGING *sliderInfo)
+{
+	HWND widgetWindow = MANAGERVIEW_WIDGET(hwnd);
+	if (NULL != widgetWindow)
+		WIDGET_ZOOM_SLIDER_POS_CHANGING(widgetWindow, sliderInfo);
+}
+
+static LRESULT
+ManagerView_OnNotify(HWND hwnd, NMHDR *pnmh)
+{
+	return 0;
+}
+
+static void
+ManagerView_OnHorzScroll(HWND hwnd, INT action, INT trackPosition, HWND senderWindow)
+{
+	HWND sliderWindow = MANAGERVIEW_ZOOM_SLIDER(hwnd);
+	if (NULL != sliderWindow && senderWindow == sliderWindow)
+	{
+		NMTRBTHUMBPOSCHANGING zoomInfo;
+		zoomInfo.hdr.code = TRBN_THUMBPOSCHANGING;
+		zoomInfo.hdr.hwndFrom = senderWindow;
+		zoomInfo.hdr.idFrom = IDC_SLIDER_ZOOM;
+		zoomInfo.nReason = action;
+		if (TB_THUMBPOSITION == action ||
+			TB_THUMBTRACK == action)
+		{
+			zoomInfo.dwPos = trackPosition;
+		}
+		else
+			zoomInfo.dwPos = (DWORD)SendMessage(sliderWindow, TBM_GETPOS, 0, 0L);
+		
+		ManagerView_OnZoomSliderPosChanging(hwnd, &zoomInfo);
+	}
+}
+
+static BOOL
+ManagerView_OnHelp(HWND hwnd, HELPINFO *helpInfo)
+{
+	HWND widgetWindow = MANAGERVIEW_WIDGET(hwnd);
+	if (NULL != widgetWindow)
+	{
+		wchar_t buffer[4096] = {0};
+
+		if (FALSE != WIDGET_GET_HELP_URL(widgetWindow, buffer, ARRAYSIZE(buffer)) && 
+			MediaLibrary_ShowHelp(Plugin_GetLibraryWindow(), buffer))
+		{
+			return TRUE;
+		}
+	}
+
+	return Plugin_ShowHelp();
+}
+
+static void 
+ManagerView_OnSetUpdateRegion(HWND  hwnd, HRGN updateRegion, POINTS regionOffset)
+{
+	ManagerView *self;
+	MANAGERVIEW_RET_VOID(self, hwnd);
+
+	self->updateRegion = updateRegion;
+	self->updateOffset.x = regionOffset.x;
+	self->updateOffset.y = regionOffset.y;
+}
+
+static HWND
+ManagerView_OnGetZoomSlider(HWND hwnd)
+{
+	return MANAGERVIEW_ZOOM_SLIDER(hwnd);
+}
+
+static HWND
+ManagerView_OnGetStatusBar(HWND hwnd)
+{
+	return MANAGERVIEW_STATUS_BAR(hwnd);
+}
+
+static INT_PTR CALLBACK 
+ManagerView_DialogProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+	switch(uMsg)
+	{
+		case WM_INITDIALOG:		return ManagerView_OnInitDialog(hwnd, (HWND)wParam, lParam);
+		case WM_DESTROY:		ManagerView_OnDestroy(hwnd); return TRUE;
+		case WM_CTLCOLORDLG:	return ManagerView_OnColorDialog(hwnd, (HDC)wParam);
+		case WM_PAINT:			ManagerView_OnPaint(hwnd); return TRUE;
+		case WM_PRINTCLIENT:	ManagerView_OnPrintClient(hwnd, (HDC)wParam, (UINT)lParam); return TRUE;
+		case WM_ERASEBKGND:		DIALOG_RESULT(hwnd, 0);
+		case WM_WINDOWPOSCHANGED:	ManagerView_OnWindowPosChanged(hwnd, (WINDOWPOS*)lParam); return TRUE;
+		case WM_DISPLAYCHANGE:	ManagerView_OnDisplayChanged(hwnd, (INT)wParam, LOWORD(lParam), HIWORD(lParam)); return TRUE;
+		case WM_SETFONT:		ManagerView_OnSetFont(hwnd, (HFONT)wParam, LOWORD(lParam)); return TRUE;
+		case WM_GETFONT:		DIALOG_RESULT(hwnd, ManagerView_OnGetFont(hwnd));
+		case WM_COMMAND:		ManagerView_OnCommand(hwnd, LOWORD(wParam), HIWORD(wParam), (HWND)lParam); return TRUE;
+		case WM_NOTIFY:			DIALOG_RESULT(hwnd, ManagerView_OnNotify(hwnd, (NMHDR*)lParam)); 
+		case WM_HSCROLL:		ManagerView_OnHorzScroll(hwnd, LOWORD(wParam), (short)HIWORD(wParam), (HWND)lParam); return TRUE;
+		case WM_HELP:			DIALOG_RESULT(hwnd, ManagerView_OnHelp(hwnd, (HELPINFO*)lParam));
+
+		// gen_ml flickerless drawing
+		case WM_USER + 0x200:		DIALOG_RESULT(hwnd, 1);
+		case WM_USER + 0x201:		ManagerView_OnSetUpdateRegion(hwnd, (HRGN)lParam, MAKEPOINTS(wParam)); return TRUE;
+
+		case MANAGERVIEW_WM_ZOOMSLIDER:			DIALOG_RESULT(hwnd, ManagerView_OnGetZoomSlider(hwnd));
+		case MANAGERVIEW_WM_STATUSBAR:			DIALOG_RESULT(hwnd, ManagerView_OnGetStatusBar(hwnd));
+	}
+	return 0;
+}
\ No newline at end of file