From 4932bc5ea8b223dcce5214aa5d8485d703ae84df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Wed, 22 Oct 2008 12:02:49 +0000
Subject: [PATCH] * Added the BeOS feature that Command-~ (with American
 keymap) will switch   workspaces between this and the previous one. * Note
 that this is mapped to a specific key on the keyboard (key 17), so   it will
 differ with the keymap, but will usually be the key below the escape   key. *
 This closes ticket #2766.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28282 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/servers/app/Desktop.cpp | 11 +++++++++--
 src/servers/app/Desktop.h   |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/servers/app/Desktop.cpp b/src/servers/app/Desktop.cpp
index 68d8a84ac1..593bb52e8d 100644
--- a/src/servers/app/Desktop.cpp
+++ b/src/servers/app/Desktop.cpp
@@ -173,6 +173,9 @@ KeyboardFilter::Filter(BMessage* message, EventTarget** _target,
 				fDesktop->SetWorkspaceAsync(key - 2);
 				return B_SKIP_MESSAGE;
 			}
+		} if (key == 0x11 && (modifiers & B_COMMAND_KEY) != 0) {
+			// switch to previous workspace
+			fDesktop->SetWorkspaceAsync(-1);
 		}
 	}
 
@@ -296,6 +299,7 @@ Desktop::Desktop(uid_t userID)
 	fApplicationsLock("application list"),
 	fShutdownSemaphore(-1),
 	fCurrentWorkspace(0),
+	fPreviousWorkspace(0),
 	fAllWindows(kAllWindowList),
 	fSubsetWindows(kSubsetList),
 	fFocusList(kFocusList),
@@ -633,6 +637,9 @@ Desktop::_DispatchMessage(int32 code, BPrivate::LinkReceiver &link)
 			int32 index;
 			link.Read<int32>(&index);
 
+			if (index == -1)
+				index = fPreviousWorkspace;
+
 			SetWorkspace(index);
 			break;
 		}
@@ -885,8 +892,7 @@ Desktop::SetWorkspace(int32 index)
 }
 
 
-/*!
-	Changes the current workspace to the one specified by \a index.
+/*!	Changes the current workspace to the one specified by \a index.
 	You must hold the all window lock when calling this method.
 */
 void
@@ -946,6 +952,7 @@ Desktop::_SetWorkspace(int32 index)
 		window->SetCurrentWorkspace(-1);
 	}
 
+	fPreviousWorkspace = fCurrentWorkspace;
 	fCurrentWorkspace = index;
 
 	// show windows, and include them in the changed region - but only
diff --git a/src/servers/app/Desktop.h b/src/servers/app/Desktop.h
index 7009962617..710bdda189 100644
--- a/src/servers/app/Desktop.h
+++ b/src/servers/app/Desktop.h
@@ -279,6 +279,7 @@ class Desktop : public MessageLooper, public ScreenOwner {
 
 		::Workspace::Private	fWorkspaces[kMaxWorkspaces];
 		int32					fCurrentWorkspace;
+		int32					fPreviousWorkspace;
 
 		WindowList				fAllWindows;
 		WindowList				fSubsetWindows;