Merge pull request #806 from vssdeo/805-keyboard-shortcut-support-for-plugins-code-decoupling

805 keyboard shortcut support for plugins code decoupling

terminatorlib/config.py

@@ -720,6 +720,19 @@ class ConfigBase(Borg):
         for section_name in ['global_config', 'keybindings']:
             dbg('Processing section: %s' % section_name)
             section = getattr(self, section_name)
+            if section_name == 'keybindings':
+                from terminatorlib.plugin import KeyBindUtil
+                # for plugin KeyBindUtil assist in plugin_util
+                keybindutil = KeyBindUtil();
+                keyb_keys   = keybindutil.get_all_act_to_keys()
+                # we only need keys as a reference so to match them
+                # against new values
+                keyb_keys   = dict.fromkeys(keyb_keys, "")
+
+                default_merged_section = {**keyb_keys, **DEFAULTS[section_name]}
+                merged_section = {**keyb_keys, **section}
+                parser[section_name] = dict_diff(default_merged_section, merged_section)
+            else:
                 parser[section_name] = dict_diff(DEFAULTS[section_name], section)
 
         from .configjson import JSON_PROFILE_NAME, JSON_LAYOUT_NAME

terminatorlib/plugin.py

@@ -197,3 +197,138 @@ class MenuItem(Plugin):
     def callback(self, menuitems, menu, terminal):
         """Callback to transform the enclosed URL"""
         raise NotImplementedError
+
+
+"""
+-Basic plugin util for key-press handling, has all mapping to be used
+in layout keybindings
+
+Vishweshwar Saran Singh Deo vssdeo@gmail.com
+"""
+
+from gi.repository import Gtk, Gdk
+from terminatorlib.keybindings import Keybindings, KeymapError
+
+PLUGIN_UTIL_DESC = 0
+PLUGIN_UTIL_ACT  = 1
+PLUGIN_UTIL_KEYS = 2
+
+class KeyBindUtil:
+
+    keybindings = Keybindings()
+
+    map_key_to_act  = {}
+    map_act_to_keys = {}
+    map_act_to_desc = {}
+
+    def __init__(self, config=None):
+        self.config = config
+
+    #Example
+    #  bind
+    #  first param is desc, second is action str
+    #  self.keyb.bindkey([PluginUrlFindNext , PluginUrlActFindNext, "<Alt>j"])
+    #
+    #  get action name
+    #  act = self.keyb.keyaction(event)
+
+    #  if act == "url_find_next":
+
+
+    #check map key_val_mask -> action
+    def _check_keybind_change(self, key):
+        act = key[PLUGIN_UTIL_ACT]
+        for key_val_mask in self.map_key_to_act:
+            old_act = self.map_key_to_act[key_val_mask]
+            if act == old_act:
+                return key_val_mask
+        return None
+
+    #check in config before binding
+    def bindkey_check_config(self, key):
+        if not self.config:
+            raise Warning("bindkey_check_config called without config init")
+
+        actstr = key[PLUGIN_UTIL_ACT]
+        kbsect = self.config.base.get_item('keybindings')
+        keystr = kbsect[actstr] if actstr in kbsect else ""
+        dbg("bindkey_check_config:action (%s) key str:(%s)" % (actstr, keystr))
+        if len(keystr):
+            key[PLUGIN_UTIL_KEYS] = keystr
+            dbg("found new Action->KeyVal in config: (%s, %s)"
+                                              % (actstr, keystr));
+        self.bindkey(key)
+
+    def bindkey(self, key):
+        (keyval, mask)  = self.keybindings._parsebinding(key[PLUGIN_UTIL_KEYS])
+        keyval = Gdk.keyval_to_lower(keyval)
+        mask = Gdk.ModifierType(mask)
+
+        ret = (keyval, mask)
+        dbg("bindkey: (%s) (%s)" %  (key[PLUGIN_UTIL_KEYS], str(ret)))
+
+        #remove if any old key_val_mask
+        old_key_val_mask = self._check_keybind_change(key)
+        if old_key_val_mask:
+            dbg("found old key binding, removing: (%s)" % str(old_key_val_mask))
+            del self.map_key_to_act[old_key_val_mask]
+
+        #map key-val-mask to action, used to ease key-press management
+        self.map_key_to_act[ret] = key[PLUGIN_UTIL_ACT]
+
+
+        #map action to key-combo-str, used in preferences->keybinding
+        self.map_act_to_keys[key[PLUGIN_UTIL_ACT]]   = key[PLUGIN_UTIL_KEYS]
+        #map action to key-combo description, in used preferences->keybinding
+        self.map_act_to_desc[key[PLUGIN_UTIL_ACT]] = key[PLUGIN_UTIL_DESC]
+
+    def unbindkey(self, key):
+
+        # Suppose user changed the key-combo and its diff from
+        # what the plugin had set by default, we need to get
+        # current key-combo
+        act      = key[PLUGIN_UTIL_ACT]
+        act_keys = self.map_act_to_keys[act]
+
+        (keyval, mask)  = self.keybindings._parsebinding(act_keys)
+        keyval = Gdk.keyval_to_lower(keyval)
+        mask = Gdk.ModifierType(mask)
+
+        ret = (keyval, mask)
+        dbg("unbindkey: (%s) (%s)" %  (key[PLUGIN_UTIL_KEYS], str(ret)))
+
+        # FIXME keys should always be there, can also use .pop(key, None)
+        # lets do it after testing
+        del self.map_key_to_act[ret]
+        del self.map_act_to_keys[key[PLUGIN_UTIL_ACT]]
+        del self.map_act_to_desc[key[PLUGIN_UTIL_ACT]]
+
+
+    def keyaction(self, event):
+        #FIXME MOD2 mask comes in the event, remove
+        event.state  &= ~Gdk.ModifierType.MOD2_MASK
+
+        keyval = Gdk.keyval_to_lower(event.keyval)
+        ret = (keyval, event.state)
+        dbg("keyaction: (%s)" % str(ret))
+        return self.map_key_to_act.get(ret, None)
+
+    def get_act_to_keys(self, key):
+        return self.map_act_to_keys.get(key)
+
+    def get_all_act_to_keys(self):
+        return self.map_act_to_keys
+
+    def get_all_act_to_desc(self):
+        return self.map_act_to_desc
+
+    def get_act_to_desc(self, act):
+        return self.map_act_to_desc.get(act)
+
+    #get action to key binding from config
+    def get_act_to_keys_config(self, act):
+        if not self.config:
+            raise Warning("get_keyvalmask_for_act called without config init")
+
+        keybindings = self.config["keybindings"]
+        return keybindings.get(act)

terminatorlib/prefseditor.py

@@ -18,6 +18,8 @@ from .terminator import Terminator
 from .plugin import PluginRegistry
 from .version import APP_NAME
 
+from .plugin import KeyBindUtil
+
 def get_color_string(widcol):
     return('#%02x%02x%02x' % (widcol.red>>8, widcol.green>>8, widcol.blue>>8))
 
@@ -472,6 +474,15 @@ class PrefsEditor:
         liststore = widget.get_model()
         liststore.set_sort_column_id(0, Gtk.SortType.ASCENDING)
         keybindings = self.config['keybindings']
+
+        keybindutil          = KeyBindUtil()
+        plugin_keyb_act      = keybindutil.get_all_act_to_keys()
+        plugin_keyb_desc     = keybindutil.get_all_act_to_desc()
+        #merge give preference to main bindings over plugin
+        keybindings          = {**plugin_keyb_act,  **keybindings}
+        self.keybindingnames = {**plugin_keyb_desc, **self.keybindingnames}
+        #dbg("appended actions %s names %s" % (keybindings, self.keybindingnames))
+
         for keybinding in keybindings:
             keyval = 0
             mask = 0
@@ -1900,8 +1911,14 @@ class PrefsEditor:
         current_binding = liststore.get_value(liststore.get_iter(path), 0)
         parsed_accel = Gtk.accelerator_parse(accel)
 
+        keybindutil          = KeyBindUtil()
+        keybindings          = self.config["keybindings"]
+        #merge give preference to main bindings over plugin
+        plugin_keyb_act      = keybindutil.get_all_act_to_keys()
+        keybindings          = {**plugin_keyb_act,  **keybindings}
+
         duplicate_bindings = []
-        for conf_binding, conf_accel in self.config["keybindings"].items():
+        for conf_binding, conf_accel in keybindings.items():
             if conf_accel is None:
                 continue
 
@@ -1944,6 +1961,16 @@ class PrefsEditor:
         binding = liststore.get_value(liststore.get_iter(path), 0)
         accel = Gtk.accelerator_name(key, mods)
         self.config['keybindings'][binding] = accel
+
+        plugin_keyb_desc = keybindutil.get_act_to_desc(binding)
+        if plugin_keyb_desc:
+            dbg("modifying plugin binding: %s, %s, %s" %
+                                    (plugin_keyb_desc, binding, accel))
+            keybindutil.bindkey([plugin_keyb_desc, binding, accel])
+        else:
+            dbg("skipping: %s" % binding)
+            pass
+
         self.config.save()
 
     def on_cellrenderer_accel_cleared(self, liststore, path):