From 2b448194926582fa449a1d27c15296b43772c2df Mon Sep 17 00:00:00 2001
From: donho <donho@f5eea248-9336-0410-98b8-ebc06183d4e3>
Date: Tue, 9 Sep 2008 00:25:02 +0000
Subject: [PATCH] [NEW] Add 2 notification (NPPN_DOCSWITCHINGIN and
 NPPN_DOCSWITCHINGOFF)messages.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository@310 f5eea248-9336-0410-98b8-ebc06183d4e3
---
 .../MISC/PluginsManager/Notepad_plus_msgs.h   | 10 +++++++
 PowerEditor/src/Notepad_plus.cpp              | 28 +++++++++++++++----
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/PowerEditor/src/MISC/PluginsManager/Notepad_plus_msgs.h b/PowerEditor/src/MISC/PluginsManager/Notepad_plus_msgs.h
index d10ef43f7..fddadfc43 100644
--- a/PowerEditor/src/MISC/PluginsManager/Notepad_plus_msgs.h
+++ b/PowerEditor/src/MISC/PluginsManager/Notepad_plus_msgs.h
@@ -326,4 +326,14 @@ enum winVer{WV_UNKNOWN, WV_WIN32S, WV_95, WV_98, WV_ME, WV_NT, WV_W2K, WV_XP, WV
 	//scnNotification->nmhdr.hwndFrom = hwndNpp;
 	//scnNotification->nmhdr.idFrom = 0;
 
+	#define NPPN_DOCSWITCHINGOFF (NPPN_FIRST + 10) // To notify plugins that current doc is about to be switched off.
+	//scnNotification->nmhdr.code = NPPN_DOCSWITCHINGOFF;
+	//scnNotification->nmhdr.hwndFrom = hwndNpp;
+	//scnNotification->nmhdr.idFrom = currentBufferID;
+
+	#define NPPN_DOCSWITCHINGIN (NPPN_FIRST + 11) // To notify plugins that current doc is about to be switched in.
+	//scnNotification->nmhdr.code = NPPN_DOCSWITCHINGIN;
+	//scnNotification->nmhdr.hwndFrom = hwndNpp;
+	//scnNotification->nmhdr.idFrom = newBufferID;
+
 #endif //NOTEPAD_PLUS_MSGS_H
diff --git a/PowerEditor/src/Notepad_plus.cpp b/PowerEditor/src/Notepad_plus.cpp
index 1ac0994ff..e50e721b4 100644
--- a/PowerEditor/src/Notepad_plus.cpp
+++ b/PowerEditor/src/Notepad_plus.cpp
@@ -4828,30 +4828,46 @@ void Notepad_plus::docGotoAnotherEditView(FileTransferMode mode)
 	//_linkTriggered = true;
 }
 
-bool Notepad_plus::activateBuffer(BufferID id, int whichOne) {
+bool Notepad_plus::activateBuffer(BufferID id, int whichOne)
+{
+	BufferID oldBuf = _pEditView->getCurrentBufferID();
+	SCNotification scnN;
+	scnN.nmhdr.code = NPPN_DOCSWITCHINGOFF;
+	scnN.nmhdr.hwndFrom = _hSelf;
+	scnN.nmhdr.idFrom = oldBuf;
+	_pluginsManager.notify(&scnN);
+
 	Buffer * pBuf = MainFileManager->getBufferByID(id);
 	bool reload = pBuf->getNeedReload();
-	if (reload) {
+	if (reload)
+	{
 		MainFileManager->reloadBuffer(id);
 		pBuf->setNeedReload(false);
 	}
-	if (whichOne == MAIN_VIEW) {
+	if (whichOne == MAIN_VIEW)
+	{
 		if (_mainDocTab.activateBuffer(id))	//only activate if possible
 			_mainEditView.activateBuffer(id);
 		else
 			return false;
-	} else {
+	}
+	else
+	{
 		if (_subDocTab.activateBuffer(id))
 			_subEditView.activateBuffer(id);
 		else
 			return false;
 	}
 
-	if (reload) {
+	if (reload) 
+	{
 		performPostReload(whichOne);
 	}
-
 	notifyBufferActivated(id, whichOne);
+	scnN.nmhdr.code = NPPN_DOCSWITCHINGIN;
+	scnN.nmhdr.hwndFrom = _hSelf;
+	scnN.nmhdr.idFrom = id;
+	_pluginsManager.notify(&scnN);
 	return true;
 }