add hotkey method to Action (#1070)

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.6.0)
-project(fcitx VERSION 5.1.10)
+project(fcitx VERSION 5.1.11)
 set(FCITX_VERSION ${PROJECT_VERSION})
 
 find_package(ECM REQUIRED 1.0.0)

src/lib/fcitx/action.cpp

@@ -18,6 +18,7 @@ class ActionPrivate : QPtrHolder<Action> {
     int id_ = 0;
     bool checkable_ = false;
     bool separator_ = false;
+    KeyList hotkey_;
     FCITX_DEFINE_SIGNAL_PRIVATE(Action, Update);
 };
 
@@ -92,6 +93,16 @@ const std::string &Action::name() const {
 
 void Action::update(InputContext *ic) { emit<Update>(ic); }
 
+const KeyList &Action::hotkey() const {
+    FCITX_D();
+    return d->hotkey_;
+}
+
+void Action::setHotkey(const KeyList &hotkey) {
+    FCITX_D();
+    d->hotkey_ = hotkey;
+}
+
 class SimpleActionPrivate : public QPtrHolder<Action> {
 public:
     SimpleActionPrivate(SimpleAction *q) : QPtrHolder(q) {}

src/lib/fcitx/action.h

@@ -9,6 +9,7 @@
 
 #include <memory>
 #include <fcitx-utils/element.h>
+#include <fcitx-utils/key.h>
 #include <fcitx-utils/macros.h>
 #include "fcitxcore_export.h"
 
@@ -139,6 +140,24 @@ class FCITXCORE_EXPORT Action : public Element {
 
     FCITX_DECLARE_SIGNAL(Action, Update, void(InputContext *));
 
+    /**
+     * Hotkey bound to the action.
+     * This is only for display purpose when UI implementation supports it,
+     * and it has nothing to do with the key handling logic.
+     *
+     * @return key list.
+     * @since 5.1.11
+     */
+    const KeyList &hotkey() const;
+
+    /**
+     * Set associated hotkey for display.
+     *
+     * @param hotkey keys that trigger the action.
+     * @since 5.1.11
+     */
+    void setHotkey(const KeyList &hotkey);
+
 private:
     void setName(const std::string &name);
     void setId(int id);