Added multi-instance managing to event_manager.py

1.  Moved plugin directory from './examples/data/scripts/plugins' to
	'./examples/data/'.
2.  Broke up the plugin manager class into two small functions.
3.  Removed the handler objects ability to have non-callable handlers
	given that there is a perfectly good on_event.py plugin which can
	do exactly the same.
4.  Gave event_manager daemon abilities similar to the cookie_daemon.
5.  Using pid to track the event manager daemons running status.
6.  Added the ability to load plugins from multiple locations.
7.  Removed all outgoing message queues as this work-around is no longer
	required after the newly added --connect-socket uzbl-core ability.
8.  Removed native stdin/fifo reading ability. Use socat if required.
9.  Updated uzbl-browser script to load example cookie_daemon if
	cookie_daemon is not in $XDG_DATA_HOME/uzbl/scripts/
10. Added a new event_manager.py launcher uzbl-daemon.
11. Updated make test-dev-browser target to test uzbl-daemon also.
12. Added init like {start|stop|restart} to the event manager.
13. Added a fourth 'list' option to {start|stop|..} to list the plugins
	and dirs of each plugin that would be loaded by the event manager.

1 files changed, 87 insertions, 0 deletions

diff --git a/examples/data/uzbl/plugins/config.py b/examples/data/uzbl/plugins/config.py
new file mode 100644
index 0000000..22803b4
--- /dev/null
+++ b/examples/data/uzbl/plugins/config.py
@@ -0,0 +1,87 @@
+import re
+import types
+
+__export__ = ['set', 'get_config']
+
+_VALIDSETKEY = re.compile("^[a-zA-Z][a-zA-Z0-9_]*$").match
+_TYPECONVERT = {'int': int, 'float': float, 'str': unicode}
+
+UZBLS = {}
+
+
+def escape(value):
+    '''A real escaping function may be required.'''
+
+    return unicode(value)
+
+
+def get_config(uzbl):
+    if uzbl not in UZBLS:
+        add_instance(uzbl)
+
+    return UZBLS[uzbl]
+
+
+def set(uzbl, key, value):
+    '''Sends a: "set key = value" command to the uzbl instance.'''
+
+    if type(value) == types.BooleanType:
+        value = int(value)
+
+    if not _VALIDSETKEY(key):
+        raise KeyError("%r" % key)
+
+    value = escape(value)
+    if '\n' in value:
+        value = value.replace("\n", "\\n")
+
+    uzbl.send('set %s = %s' % (key, value))
+
+
+def add_instance(uzbl, *args):
+    UZBLS[uzbl] = ConfigDict(uzbl)
+
+
+def del_instance(uzbl, *args):
+    if uzbl in UZBLS:
+        del uzbl
+
+
+def get_config(uzbl):
+    if uzbl not in UZBLS:
+        add_instance(uzbl)
+
+    return UZBLS[uzbl]
+
+
+class ConfigDict(dict):
+    def __init__(self, uzbl):
+        self._uzbl = uzbl
+
+    def __setitem__(self, key, value):
+        '''Makes "config[key] = value" a wrapper for the set function.'''
+
+        if key not in self or unicode(self[key]) != unicode(value):
+            set(self._uzbl, key, value)
+
+
+def variable_set(uzbl, args):
+    config = get_config(uzbl)
+
+    key, type, value = list(args.split(' ', 2) + ['',])[:3]
+    old = config[key] if key in config else None
+    value = _TYPECONVERT[type](value)
+
+    dict.__setitem__(config, key, value)
+
+    if old != value:
+        uzbl.event("CONFIG_CHANGED", key, value)
+
+
+def init(uzbl):
+
+    connects = {'VARIABLE_SET': variable_set,
+      'INSTANCE_START': add_instance,
+      'INSTANCE_EXIT': del_instance}
+
+    uzbl.connect_dict(connects)