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dom/plugins/ipc/NPEventWindows.h@b8a032363ba2 (annotated)

dom/plugins/ipc/NPEventWindows.h

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
michael@0	2	/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#ifndef mozilla_dom_plugins_NPEventWindows_h
michael@0	8	#define mozilla_dom_plugins_NPEventWindows_h 1
michael@0	9
michael@0	10
michael@0	11	#include "npapi.h"
michael@0	12	namespace mozilla {
michael@0	13
michael@0	14	namespace plugins {
michael@0	15
michael@0	16	// We use an NPRemoteEvent struct so that we can store the extra data on
michael@0	17	// the stack so that we don't need to worry about managing the memory.
michael@0	18	struct NPRemoteEvent
michael@0	19	{
michael@0	20	NPEvent event;
michael@0	21	union {
michael@0	22	RECT rect;
michael@0	23	WINDOWPOS windowpos;
michael@0	24	} lParamData;
michael@0	25	};
michael@0	26
michael@0	27	}
michael@0	28
michael@0	29	}
michael@0	30
michael@0	31	namespace IPC {
michael@0	32
michael@0	33	template <>
michael@0	34	struct ParamTraits<mozilla::plugins::NPRemoteEvent>
michael@0	35	{
michael@0	36	typedef mozilla::plugins::NPRemoteEvent paramType;
michael@0	37
michael@0	38	static void Write(Message* aMsg, const paramType& aParam)
michael@0	39	{
michael@0	40	// Make a non-const copy of aParam so that we can muck with
michael@0	41	// its insides for tranport
michael@0	42	paramType paramCopy;
michael@0	43
michael@0	44	paramCopy.event = aParam.event;
michael@0	45
michael@0	46	// We can't blindly ipc events because they may sometimes contain
michael@0	47	// pointers to memory in the sending process. For example, the
michael@0	48	// WM_IME_CONTROL with the IMC_GETCOMPOSITIONFONT message has lParam
michael@0	49	// set to a pointer to a LOGFONT structure.
michael@0	50	switch (paramCopy.event.event) {
michael@0	51	case WM_WINDOWPOSCHANGED:
michael@0	52	// The lParam parameter of WM_WINDOWPOSCHANGED holds a pointer to
michael@0	53	// a WINDOWPOS structure that contains information about the
michael@0	54	// window's new size and position
michael@0	55	paramCopy.lParamData.windowpos = *(reinterpret_cast<WINDOWPOS*>(paramCopy.event.lParam));
michael@0	56	break;
michael@0	57	case WM_PAINT:
michael@0	58	// The lParam parameter of WM_PAINT holds a pointer to an RECT
michael@0	59	// structure specifying the bounding box of the update area.
michael@0	60	paramCopy.lParamData.rect = *(reinterpret_cast<RECT*>(paramCopy.event.lParam));
michael@0	61	break;
michael@0	62
michael@0	63	// the white list of events that we will ipc to the client
michael@0	64	case WM_CHAR:
michael@0	65	case WM_SYSCHAR:
michael@0	66
michael@0	67	case WM_KEYUP:
michael@0	68	case WM_SYSKEYUP:
michael@0	69
michael@0	70	case WM_KEYDOWN:
michael@0	71	case WM_SYSKEYDOWN:
michael@0	72
michael@0	73	case WM_DEADCHAR:
michael@0	74	case WM_SYSDEADCHAR:
michael@0	75	case WM_CONTEXTMENU:
michael@0	76
michael@0	77	case WM_CUT:
michael@0	78	case WM_COPY:
michael@0	79	case WM_PASTE:
michael@0	80	case WM_CLEAR:
michael@0	81	case WM_UNDO:
michael@0	82
michael@0	83	case WM_MOUSELEAVE:
michael@0	84	case WM_MOUSEMOVE:
michael@0	85	case WM_LBUTTONDOWN:
michael@0	86	case WM_MBUTTONDOWN:
michael@0	87	case WM_RBUTTONDOWN:
michael@0	88	case WM_LBUTTONUP:
michael@0	89	case WM_MBUTTONUP:
michael@0	90	case WM_RBUTTONUP:
michael@0	91	case WM_LBUTTONDBLCLK:
michael@0	92	case WM_MBUTTONDBLCLK:
michael@0	93	case WM_RBUTTONDBLCLK:
michael@0	94
michael@0	95	case WM_SETFOCUS:
michael@0	96	case WM_KILLFOCUS:
michael@0	97	break;
michael@0	98
michael@0	99	default:
michael@0	100	// RegisterWindowMessage events should be passed.
michael@0	101	if (paramCopy.event.event >= 0xC000)
michael@0	102	break;
michael@0	103
michael@0	104	// FIXME/bug 567465: temporarily work around unhandled
michael@0	105	// events by forwarding a "dummy event". The eventual
michael@0	106	// fix will be to stop trying to send these events
michael@0	107	// entirely.
michael@0	108	paramCopy.event.event = WM_NULL;
michael@0	109	break;
michael@0	110	}
michael@0	111
michael@0	112	aMsg->WriteBytes(&paramCopy, sizeof(paramType));
michael@0	113	}
michael@0	114
michael@0	115	static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
michael@0	116	{
michael@0	117	const char* bytes = 0;
michael@0	118
michael@0	119	if (!aMsg->ReadBytes(aIter, &bytes, sizeof(paramType))) {
michael@0	120	return false;
michael@0	121	}
michael@0	122	memcpy(aResult, bytes, sizeof(paramType));
michael@0	123
michael@0	124	if (aResult->event.event == WM_PAINT) {
michael@0	125	// restore the lParam to point at the RECT
michael@0	126	aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.rect);
michael@0	127	} else if (aResult->event.event == WM_WINDOWPOSCHANGED) {
michael@0	128	// restore the lParam to point at the WINDOWPOS
michael@0	129	aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.windowpos);
michael@0	130	}
michael@0	131
michael@0	132	return true;
michael@0	133	}
michael@0	134
michael@0	135	static void Log(const paramType& aParam, std::wstring* aLog)
michael@0	136	{
michael@0	137	aLog->append(L"(WINEvent)");
michael@0	138	}
michael@0	139
michael@0	140	};
michael@0	141
michael@0	142	} // namespace IPC
michael@0	143
michael@0	144	#endif // ifndef mozilla_dom_plugins_NPEventWindows_h