1 files changed, 97 insertions, 0 deletions
diff --git a/src/context.c b/src/context.c
new file mode 100644
index 0000000..cede8a9
--- /dev/null
+++ b/src/context.c
@@ -0,0 +1,97 @@
+/*
+ *                                  \/\/\
+ *
+ *  Copyright (C) 2012-2016  Vito Caputo - <vcaputo@gnugeneration.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 3 as published
+ *  by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+	/* desktop/shelf context handling */
+
+#include <X11/Xlib.h>
+
+#include "context.h"
+#include "desktop.h"
+#include "vwm.h"
+#include "xwindow.h"
+#include "window.h"
+
+/* switch to the desired context if it isn't already the focused one, inform caller if anything happened */
+int vwm_context_focus(vwm_t *vwm, vwm_context_t desired_context)
+{
+	vwm_context_t	entry_context = vwm->focused_context;
+
+	switch (vwm->focused_context) {
+		vwm_xwindow_t	*xwin;
+		vwm_window_t	*vwin;
+
+		case VWM_CONTEXT_SHELF:
+			if (desired_context == VWM_CONTEXT_SHELF) break;
+
+			/* desired == DESKTOP && focused == SHELF */
+
+			VWM_TRACE("unmapping shelf window \"%s\"", vwm->focused_shelf->xwindow->name);
+			vwm_win_unmap(vwm, vwm->focused_shelf);
+			XFlush(vwm->display); /* for a more responsive feel */
+
+			/* map the focused desktop, from the top of the stack down */
+			list_for_each_entry_prev(xwin, &vwm->xwindows, xwindows) {
+				if (!(vwin = xwin->managed)) continue;
+				if (vwin->desktop == vwm->focused_desktop && !vwin->shelved) {
+					VWM_TRACE("Mapping desktop window \"%s\"", xwin->name);
+					vwm_win_map(vwm, vwin);
+				}
+			}
+
+			if (vwm->focused_desktop->focused_window) {
+				VWM_TRACE("Focusing \"%s\"", vwm->focused_desktop->focused_window->xwindow->name);
+				XSetInputFocus(vwm->display, vwm->focused_desktop->focused_window->xwindow->id, RevertToPointerRoot, CurrentTime);
+			}
+
+			vwm->focused_context = VWM_CONTEXT_DESKTOP;
+			break;
+
+		case VWM_CONTEXT_DESKTOP:
+			/* unmap everything, map the shelf */
+			if (desired_context == VWM_CONTEXT_DESKTOP) break;
+
+			/* desired == SHELF && focused == DESKTOP */
+
+			/* there should be a focused shelf if the shelf contains any windows, we NOOP the switch if the shelf is empty. */
+			if (vwm->focused_shelf) {
+				/* unmap everything on the current desktop */
+				list_for_each_entry(xwin, &vwm->xwindows, xwindows) {
+					if (!(vwin = xwin->managed)) continue;
+					if (vwin->desktop == vwm->focused_desktop) {
+						VWM_TRACE("Unmapping desktop window \"%s\"", xwin->name);
+						vwm_win_unmap(vwm, vwin);
+					}
+				}
+
+				XFlush(vwm->display); /* for a more responsive feel */
+
+				VWM_TRACE("Mapping shelf window \"%s\"", vwm->focused_shelf->xwindow->name);
+				vwm_win_map(vwm, vwm->focused_shelf);
+				vwm_win_focus(vwm, vwm->focused_shelf);
+
+				vwm->focused_context = VWM_CONTEXT_SHELF;
+			}
+			break;
+
+		default:
+			VWM_BUG("unexpected focused context %x", vwm->focused_context);
+			break;
+	}
+
+	/* return if the context has been changed, the caller may need to branch differently if nothing happened */
+	return (vwm->focused_context != entry_context);
+}