Add reset individual keybind button (#3423)

Co-authored-by: Benjamin Lu <templu1107@proton.me>

tests-ui/tests/store/keybindingStore.test.ts

@@ -286,4 +286,139 @@ describe('useKeybindingStore', () => {
     expect(store.getKeybinding(newKeybinding.combo)?.commandId).toBe('command2')
     expect(store.getKeybindingsByCommandId('command1')).toHaveLength(0)
   })
+
+  it('should return false when no default or current keybinding exists during reset', () => {
+    const store = useKeybindingStore()
+    const result = store.resetKeybindingForCommand('nonexistent.command')
+    expect(result).toBe(false)
+  })
+
+  it('should return false when current keybinding equals default keybinding', () => {
+    const store = useKeybindingStore()
+    const defaultKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'L', ctrl: true }
+    })
+
+    store.addDefaultKeybinding(defaultKeybinding)
+    const result = store.resetKeybindingForCommand('test.command')
+
+    expect(result).toBe(false)
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      defaultKeybinding
+    )
+  })
+
+  it('should unset user keybinding when no default keybinding exists and return true', () => {
+    const store = useKeybindingStore()
+    const userKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'M', ctrl: true }
+    })
+
+    store.addUserKeybinding(userKeybinding)
+    expect(store.keybindings).toHaveLength(1)
+
+    const result = store.resetKeybindingForCommand('test.command')
+
+    expect(result).toBe(true)
+    expect(store.keybindings).toHaveLength(0)
+  })
+
+  it('should restore default keybinding when user has overridden it and return true', () => {
+    const store = useKeybindingStore()
+
+    const defaultKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'N', ctrl: true }
+    })
+
+    const userKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'O', alt: true }
+    })
+
+    store.addDefaultKeybinding(defaultKeybinding)
+    store.updateKeybindingOnCommand(userKeybinding)
+
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      userKeybinding
+    )
+
+    const result = store.resetKeybindingForCommand('test.command')
+
+    expect(result).toBe(true)
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      defaultKeybinding
+    )
+  })
+
+  it('should remove unset record and restore default keybinding when user has unset it', () => {
+    const store = useKeybindingStore()
+
+    const defaultKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'P', ctrl: true }
+    })
+
+    store.addDefaultKeybinding(defaultKeybinding)
+
+    store.unsetKeybinding(defaultKeybinding)
+    expect(store.keybindings).toHaveLength(0)
+
+    const serializedCombo = defaultKeybinding.combo.serialize()
+    const userUnsetKeybindings = store.getUserUnsetKeybindings()
+    expect(userUnsetKeybindings[serializedCombo]).toBeTruthy()
+    expect(
+      userUnsetKeybindings[serializedCombo].equals(defaultKeybinding)
+    ).toBe(true)
+
+    const result = store.resetKeybindingForCommand('test.command')
+
+    expect(result).toBe(true)
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      defaultKeybinding
+    )
+
+    expect(store.getUserUnsetKeybindings()[serializedCombo]).toBeUndefined()
+  })
+
+  it('should handle complex scenario with both unset and user keybindings', () => {
+    const store = useKeybindingStore()
+
+    // Create default keybinding
+    const defaultKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'Q', ctrl: true }
+    })
+    store.addDefaultKeybinding(defaultKeybinding)
+
+    // Unset default keybinding
+    store.unsetKeybinding(defaultKeybinding)
+    expect(store.keybindings).toHaveLength(0)
+
+    // Add user keybinding with different combo
+    const userKeybinding = new KeybindingImpl({
+      commandId: 'test.command',
+      combo: { key: 'R', alt: true }
+    })
+    store.addUserKeybinding(userKeybinding)
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      userKeybinding
+    )
+
+    // Reset keybinding to default
+    const result = store.resetKeybindingForCommand('test.command')
+
+    expect(result).toBe(true)
+    expect(store.keybindings).toHaveLength(1)
+    expect(store.getKeybindingByCommandId('test.command')).toEqual(
+      defaultKeybinding
+    )
+  })
 })