latest SDK

foobar2000/helpers/dropdown_helper.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#ifdef FOOBAR2000_DESKTOP_WINDOWS
+
+class _cfg_dropdown_history_base
+{
+	const unsigned m_max;
+	void build_list(pfc::ptr_list_t<char> & out);
+	void parse_list(const pfc::ptr_list_t<char> & src);
+public:
+	enum {separator = '\n'};
+	virtual void set_state(const char * val) = 0;
+	virtual void get_state(pfc::string_base & out) const = 0;
+	_cfg_dropdown_history_base(unsigned p_max) : m_max(p_max) {}
+	void on_init(HWND ctrl, const char * initVal) {
+		add_item(initVal); setup_dropdown(ctrl); uSetWindowText(ctrl, initVal);
+	}
+	void setup_dropdown(HWND wnd);
+	void setup_dropdown_set_value(HWND wnd);
+	void setup_dropdown(HWND wnd,UINT id) {setup_dropdown(GetDlgItem(wnd,id));}
+	bool add_item(const char * item); //returns true when the content has changed, false when not (the item was already on the list)
+	bool add_item(const char * item, HWND combobox); //immediately adds the item to the combobox
+	bool is_empty();
+	bool on_context(HWND wnd,LPARAM coords); //returns true when the content has changed
+};
+
+class cfg_dropdown_history : public _cfg_dropdown_history_base {
+public:
+	cfg_dropdown_history(const GUID & p_guid,unsigned p_max = 10,const char * init_vals = "") : _cfg_dropdown_history_base(p_max), m_state(p_guid, init_vals) {}
+	void set_state(const char * val) {m_state = val;}
+	void get_state(pfc::string_base & out) const {out = m_state;}
+private:
+	cfg_string m_state;
+};
+
+class cfg_dropdown_history_mt : public _cfg_dropdown_history_base {
+public:
+	cfg_dropdown_history_mt(const GUID & p_guid,unsigned p_max = 10,const char * init_vals = "") : _cfg_dropdown_history_base(p_max), m_state(p_guid, init_vals) {}
+	void set_state(const char * val) {m_state.set(val);}
+	void get_state(pfc::string_base & out) const {m_state.get(out);}
+private:
+	cfg_string_mt m_state;
+};
+
+// ATL-compatible message map entry macro for installing dropdown list context menus.
+#define DROPDOWN_HISTORY_HANDLER(ctrlID,var) \
+	if(uMsg == WM_CONTEXTMENU) { \
+		const HWND source = (HWND) wParam; \
+		if (source != NULL && source == CWindow(hWnd).GetDlgItem(ctrlID)) { \
+			var.on_context(source,lParam);	\
+			lResult = 0;	\
+			return TRUE;	\
+		}	\
+	}
+
+#endif // FOOBAR2000_DESKTOP_WINDOWS