Add keys for direct room switching (#209)

* Add Keys.Rooms.Direct configuration

Keybinding to jump to specific room id in specific account id, or the
first occurence of specific room id in any account.

* Default binding was a bad idea

This example binding was preventing the user from binding Ctrl+G,Ctrl+M
to something else.

* Use const instead of var

* Use showItemAtIndex for direct room switching

This is a simpler implementation that better fits in the existing
codebase and doesn't really have drawbacks.

* Use existing findIndex

From roomList.model. Instead of reinventing it

* Made example not a real room

Earlier I made it point to the Mirage room

* Add instructions for copying room ID

After noticing that these IDs do not match Matrix room addresses, I felt
it was necessary to explain this here, even if it's already explained in
other parts of the configuration file.

* Use .split(" ") for splitting descriptions

This is a more readable implementation.

* Fix shortcuts breaking on config reload

Wrapping HShortcut in Loader makes it destructible.
See d53978f62bab35cdc7e115c50f0571f736814582

* Cleanup showRoomByDescription method, now showById

- "Room description" is a vague, it sounds like this is about
  the room topic too. Instead of having a function that takes a
  string with a certain format, take explicit arguments for the user and
  room ID, this way we don't need comments to explain what's going on
  either

- Reduce indentations and {} noise to make it simpler to read

* More details for direct room binds config comment

Co-authored-by: miruka <miruka@disroot.org>

src/config/settings.py

@@ -376,6 +376,17 @@ class Keys:
             9  = [Keys.alt_or_cmd() + "+9"]
             10 = [Keys.alt_or_cmd() + "+0"]
 
+        class Direct:
+            # Switch to specific rooms with keybindings.
+            # An unlimited number of properties can be added, where each
+            # property maps a room to a list of keybind.
+            # A room's ID can be copied by right clicking on it in the room list.
+            "!roomID:example.org" = []
+
+            # If you have multiple accounts in the same room, you can also set
+            # which account should be targeted as "<userId> <roomId>":
+            "@account:example.org !roomID:example.org" = []
+
     class Chat:
         # Keybinds specific to the current chat page.
 

src/gui/MainPane/RoomList.qml

@@ -73,6 +73,27 @@ HListView {
             keepListCentered = true
     }
 
+    function showById(roomId, accountId=null) {
+        // If only a room ID is passed, first account with this room is used
+        if (accountId === null) {
+            const roomIndex = model.findIndex(roomId)
+
+            roomIndex === null ?
+            console.warn("No account with such room ID:", roomId) :
+            showItemAtIndex(roomIndex)
+
+            return
+        }
+
+        if (! (accountId in accountIndice)) {
+            console.warn("No such account:", accountId)
+            return
+        }
+
+        pageLoader.showRoom(accountId, roomId)
+        startCorrectItemSearch()
+    }
+
     function showAccountRoomAtIndex(index) {
         const item = model.get(currentIndex === -1 ?  0 : currentIndex)
 
@@ -284,6 +305,16 @@ HListView {
         }
     }
 
+    Instantiator {
+        model: Object.keys(window.settings.Keys.Rooms.Direct)
+        delegate: Loader {
+            sourceComponent: HShortcut {
+                sequences: window.settings.Keys.Rooms.Direct[modelData]
+                onActivated: showById(...modelData.split(/\s+/).reverse())
+            }
+        }
+    }
+
     Rectangle {
         anchors.fill: parent
         z: -100