Simplify EActivity.

With unintrusive error dialogs gone, we can cut some unnecessary bits
out of EActivity.

I'm also adding a new enum property called "state", which is one of:

    E_ACTIVITY_RUNNING
    E_ACTIVITY_WAITING
    E_ACTIVITY_CANCELLED
    E_ACTIVITY_COMPLETED

The state of an activity must be explicitly changed.  In particular,
when the user cancels an activity the state should be set only after
confirming the operation has been cancelled and not when cancellation
is requested (e.g. after receiving a G_IO_ERROR_CANCELLED, not when
the GCancellable emits "cancelled").  EActivityBar and EActivityProxy
widgets have been updated to make this distinction clearer in the UI.

E_ACTIVITY_WAITING will be used when activities have to be queued and
dispatched in sequence, which I haven't written yet.

1 files changed, 35 insertions, 0 deletions

diff --git a/e-util/e-util-enums.h b/e-util/e-util-enums.h
new file mode 100644
index 0000000000..bcf214ea33
--- /dev/null
+++ b/e-util/e-util-enums.h
@@ -0,0 +1,35 @@
+/*
+ * e-util-enums.h
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef E_UTIL_ENUMS_H
+#define E_UTIL_ENUMS_H
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+typedef enum {
+	E_ACTIVITY_RUNNING,
+	E_ACTIVITY_WAITING,
+	E_ACTIVITY_CANCELLED,
+	E_ACTIVITY_COMPLETED
+} EActivityState;
+
+G_END_DECLS
+
+#endif /* E_UTIL_ENUMS_H */