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/*
This file is part of Dconf Editor
Dconf Editor is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Dconf Editor 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 Dconf Editor. If not, see <https://www.gnu.org/licenses/>.
*/
internal enum Behaviour {
UNSAFE,
SAFE,
ALWAYS_CONFIRM_IMPLICIT,
ALWAYS_CONFIRM_EXPLICIT,
ALWAYS_DELAY
}
internal enum ModificationsMode {
NONE,
TEMPORARY,
DELAYED
}
private class ModificationsHandler : Object
{
[CCode (notify = false)] internal ModificationsMode mode { internal get; private set; default = ModificationsMode.NONE; }
private HashTable<string, Variant?> keys_awaiting_hashtable = new HashTable<string, Variant?> (str_hash, str_equal);
private GenericSet<string> dconf_changes_set = new GenericSet<string> (str_hash, str_equal);
private HashTable<string, uint16> gsettings_changes_set = new HashTable<string, uint16> (str_hash, str_equal);
[CCode (notify = false)] internal uint dconf_changes_count { internal get { return dconf_changes_set.length; }}
[CCode (notify = false)] internal uint gsettings_changes_count { internal get { return gsettings_changes_set.length; }}
public SettingsModel model { internal get; internal construct; }
internal signal void leave_delay_mode ();
internal signal void delayed_changes_changed ();
[CCode (notify = false)] internal Behaviour behaviour { internal get; internal set; }
internal ModificationsHandler (SettingsModel model)
{
Object (model: model);
}
/*\
* * Public calls
\*/
internal bool has_pending_changes ()
{
return dconf_changes_count + gsettings_changes_count != 0;
}
internal bool get_current_delay_mode ()
{
return mode == ModificationsMode.DELAYED || behaviour == Behaviour.ALWAYS_DELAY;
}
internal bool should_delay_apply (string type_string)
{
if (get_current_delay_mode () || behaviour == Behaviour.ALWAYS_CONFIRM_IMPLICIT || behaviour == Behaviour.ALWAYS_CONFIRM_EXPLICIT)
return true;
if (behaviour == Behaviour.UNSAFE)
return false;
if (behaviour == Behaviour.SAFE)
return type_string != "b" && type_string != "mb" && type_string != "<enum>" && type_string != "<flags>";
assert_not_reached ();
}
internal void enter_delay_mode ()
{
mode = ModificationsMode.DELAYED;
delayed_changes_changed ();
}
internal void add_delayed_setting (string key_path, Variant? new_value, uint16 context_id)
requires (!ModelUtils.is_folder_context_id (context_id))
{
if (!keys_awaiting_hashtable.contains (key_path))
{
if (ModelUtils.is_dconf_context_id (context_id))
dconf_changes_set.add (key_path);
else
gsettings_changes_set.insert (key_path, context_id);
keys_awaiting_hashtable.insert (key_path, new_value);
}
else
keys_awaiting_hashtable.replace (key_path, new_value);
mode = get_current_delay_mode () ? ModificationsMode.DELAYED : ModificationsMode.TEMPORARY;
delayed_changes_changed ();
}
internal void dismiss_change (string key_path)
{
if (mode == ModificationsMode.NONE)
mode = behaviour == Behaviour.ALWAYS_DELAY ? ModificationsMode.DELAYED : ModificationsMode.TEMPORARY;
if (keys_awaiting_hashtable.remove (key_path))
{
if (!gsettings_changes_set.remove (key_path)
&& !dconf_changes_set.remove (key_path))
assert_not_reached ();
}
// else... // happens on the second edit with unparsable value in a KeyEditorChildDefault
delayed_changes_changed ();
}
internal void path_changed ()
{
if (mode != ModificationsMode.TEMPORARY)
return;
if (behaviour == Behaviour.ALWAYS_CONFIRM_IMPLICIT || behaviour == Behaviour.SAFE)
apply_delayed_settings ();
else if (behaviour == Behaviour.ALWAYS_CONFIRM_EXPLICIT)
dismiss_delayed_settings ();
else
assert_not_reached ();
}
internal void apply_delayed_settings ()
{
mode = ModificationsMode.NONE;
model.apply_key_value_changes (keys_awaiting_hashtable);
gsettings_changes_set.remove_all ();
dconf_changes_set.remove_all ();
keys_awaiting_hashtable.remove_all ();
delayed_changes_changed ();
leave_delay_mode ();
}
internal void dismiss_delayed_settings ()
{
mode = ModificationsMode.NONE;
gsettings_changes_set.remove_all ();
dconf_changes_set.remove_all ();
keys_awaiting_hashtable.remove_all ();
delayed_changes_changed ();
leave_delay_mode ();
}
internal Variant get_key_custom_value (string full_name, uint16 context_id)
{
bool planned_change = key_has_planned_change (full_name);
Variant? planned_value = get_key_planned_value (full_name);
if (planned_change && (planned_value != null))
return (!) planned_value;
RegistryVariantDict properties = new RegistryVariantDict.from_aqv (model.get_key_properties (full_name, context_id, (uint16) PropertyQuery.KEY_VALUE));
Variant key_value;
if (!properties.lookup (PropertyQuery.KEY_VALUE, "v", out key_value))
assert_not_reached ();
properties.clear ();
return key_value;
}
internal void set_dconf_key_value (string full_name, Variant key_value)
{
model.set_dconf_key_value (full_name, key_value);
}
internal void set_gsettings_key_value (string full_name, uint16 context_id, Variant key_value)
{
model.set_gsettings_key_value (full_name, context_id, key_value);
}
internal void erase_dconf_key (string full_name)
{
if (get_current_delay_mode ())
add_delayed_setting (full_name, null, ModelUtils.dconf_context_id);
else if (behaviour != Behaviour.UNSAFE)
{
mode = ModificationsMode.DELAYED; // call only once delayed_changes_changed()
add_delayed_setting (full_name, null, ModelUtils.dconf_context_id);
}
else
model.erase_key (full_name);
}
internal void set_to_default (string full_name, uint16 context_id)
requires (!ModelUtils.is_folder_context_id (context_id))
requires (!ModelUtils.is_dconf_context_id (context_id))
{
if (get_current_delay_mode ())
add_delayed_setting (full_name, null, context_id);
else
model.set_key_to_default (full_name, context_id);
}
internal bool key_has_planned_change (string key_path)
{
if (keys_awaiting_hashtable.contains (key_path))
return true;
bool has_planned_changed = false;
keys_awaiting_hashtable.@foreach ((key_awaiting, planned_value) => {
if (key_path == key_awaiting)
has_planned_changed = true;
});
return has_planned_changed;
}
internal Variant? get_key_planned_value (string key_path)
{
if (keys_awaiting_hashtable.contains (key_path))
return keys_awaiting_hashtable.lookup (key_path);
Variant? planned_changed = null;
keys_awaiting_hashtable.@foreach ((key_awaiting, planned_value) => {
if (key_path == key_awaiting)
planned_changed = planned_value;
});
return planned_changed;
}
internal ListStore get_delayed_settings ()
{
ListStore delayed_settings_list = new ListStore (typeof (SimpleSettingObject));
keys_awaiting_hashtable.@foreach ((key_path, planned_value) => {
if (dconf_changes_set.contains (key_path))
delayed_settings_list.append (
new SimpleSettingObject.from_full_name (ModelUtils.dconf_context_id,
key_path.slice (key_path.last_index_of_char ('/') + 1, key_path.length),
key_path));
else if (gsettings_changes_set.contains (key_path))
delayed_settings_list.append (
new SimpleSettingObject.from_full_name (gsettings_changes_set.lookup (key_path),
key_path.slice (key_path.last_index_of_char ('/') + 1, key_path.length),
key_path));
else
assert_not_reached ();
});
return delayed_settings_list;
}
}
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