latest SDK

foobar2000/foo_sample/listcontrol-ownerdata.cpp

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+#include "stdafx.h"
+
+// Owner-data CListControl use demo
+// CListControlOwnerData with callbacks
+
+#include "stdafx.h"
+#include "resource.h"
+#include <helpers/atl-misc.h>
+#include <libPPUI/CListControlOwnerData.h>
+#include <string>
+#include <algorithm>
+#include <vector>
+
+namespace {
+	struct listData_t {
+		std::string m_key, m_value;
+	};
+	static std::vector<listData_t> makeListData() {
+		std::vector<listData_t> data;
+		data.resize( 10 );
+		for( size_t walk = 0; walk < data.size(); ++ walk ) {
+			auto & rec = data[walk];
+			rec.m_key = (PFC_string_formatter() << "Item #" << (walk+1) ).c_str();
+			rec.m_value = "edit me";
+		}
+		return data;
+	}
+	
+
+	class CListControlOwnerDataDemoDialog : public CDialogImpl<CListControlOwnerDataDemoDialog>, private IListControlOwnerDataSource {
+	public:
+
+		// CListControlOwnerData constructor requires ptr to IListControlOwnerDataSource object
+		CListControlOwnerDataDemoDialog() : m_list(this) {}
+
+		enum { IDD = IDD_LISTCONTROL_DEMO };
+
+		BEGIN_MSG_MAP_EX(CListControlOwnerDataDemoDialog)
+			MSG_WM_INITDIALOG(OnInitDialog)
+			COMMAND_HANDLER_EX(IDCANCEL, BN_CLICKED, OnCancel)
+			MSG_WM_CONTEXTMENU(OnContextMenu)
+		END_MSG_MAP()
+	private:
+		void OnCancel(UINT, int, CWindow) {
+			DestroyWindow();
+		}
+
+		BOOL OnInitDialog(CWindow, LPARAM) {
+
+			// Create replacing existing windows list control
+			// automatically initialize position, font, etc
+			m_list.CreateInDialog( *this, IDC_LIST1 );
+
+			// never hardcode values in pixels, always use screen DPI
+			auto DPI = m_list.GetDPI();
+			m_list.AddColumn( "Name", MulDiv(100, DPI.cx, 96 ) );
+			m_list.AddColumn( "Value", MulDiv(150, DPI.cx, 96 ) );
+
+			ShowWindow(SW_SHOW);
+
+			return TRUE; // system should set focus
+		}
+
+		// Context menu handler
+		void OnContextMenu(CWindow wnd, CPoint point) {
+			// did we get a (-1,-1) point due to context menu key rather than right click?
+			// GetContextMenuPoint fixes that, returning a proper point at which the menu should be shown
+			point = m_list.GetContextMenuPoint(point);
+
+			CMenu menu; 
+			// WIN32_OP_D() : debug build only return value check
+			// Used to check for obscure errors in debug builds, does nothing (ignores errors) in release build
+			WIN32_OP_D(menu.CreatePopupMenu());
+
+			enum { ID_TEST1 = 1, ID_TEST2, ID_SELECTALL, ID_SELECTNONE, ID_INVERTSEL };
+			menu.AppendMenu(MF_STRING, ID_TEST1, L"Test 1");
+			menu.AppendMenu(MF_STRING, ID_TEST2, L"Test 2");
+			menu.AppendMenu(MF_SEPARATOR);
+			// Note: Ctrl+A handled automatically by CListControl, no need for us to catch it
+			menu.AppendMenu(MF_STRING, ID_SELECTALL, L"Select all\tCtrl+A");
+			menu.AppendMenu(MF_STRING, ID_SELECTNONE, L"Select none");
+			menu.AppendMenu(MF_STRING, ID_INVERTSEL, L"Invert selection");
+
+			int cmd;
+			{
+				// Callback object to show menu command descriptions in the status bar.
+				// it's actually a hidden window, needs a parent HWND, where we feed our control's HWND
+				CMenuDescriptionMap descriptions(m_hWnd);
+
+				// Set descriptions of all our items
+				descriptions.Set(ID_TEST1, "This is a test item #1");
+				descriptions.Set(ID_TEST2, "This is a test item #2");
+
+				descriptions.Set(ID_SELECTALL, "Selects all items");
+				descriptions.Set(ID_SELECTNONE, "Deselects all items");
+				descriptions.Set(ID_INVERTSEL, "Invert selection");
+
+				cmd = menu.TrackPopupMenuEx(TPM_RIGHTBUTTON | TPM_NONOTIFY | TPM_RETURNCMD, point.x, point.y, descriptions, nullptr);
+			}
+			switch(cmd) {
+			case ID_TEST1:
+			{
+				pfc::string_formatter msg;
+				msg << "Test command #1 triggered.\r\n";
+				msg << m_list.GetSelectedCount() << " items selected.";
+				// popup_message : non-blocking MessageBox equivalent
+				popup_message::g_show(msg, "Information");
+			}
+				break;
+			case ID_TEST2:
+			{
+				pfc::string_formatter msg;
+				msg << "Test command #1 triggered.\r\n";
+				msg << "Selected items:\r\n";
+				for( size_t walk = 0; walk < m_list.GetItemCount(); ++ walk) {
+					if ( m_list.IsItemSelected( walk ) ) {
+						msg << m_data[walk].m_key.c_str() << "\r\n";
+					}
+				}
+				msg << "End selected items.";
+				// popup_message : non-blocking MessageBox equivalent
+				popup_message::g_show(msg, "Information");
+			}
+				break;
+			case ID_SELECTALL:
+				m_list.SelectAll(); // trivial
+				break;
+			case ID_SELECTNONE:
+				m_list.SelectNone(); // trivial
+				break;
+			case ID_INVERTSEL:
+			{
+				auto mask = m_list.GetSelectionMask();
+				m_list.SetSelection( 
+					// Items which we alter - all of them
+					pfc::bit_array_true(),
+					// Selection values - NOT'd original selection mask
+					pfc::bit_array_not(mask) 
+				);
+				// Exclusion of footer item from selection handled via CanSelectItem()
+			}
+				break;
+			}
+		}
+
+	private:
+		// IListControlOwnerDataSource methods
+		
+		size_t listGetItemCount( ctx_t ctx ) override {
+			PFC_ASSERT( ctx == &m_list ); // ctx is a pointer to the object calling us
+			return m_data.size();
+		}
+		pfc::string8 listGetSubItemText( ctx_t, size_t item, size_t subItem ) override {
+			auto & rec = m_data[item];
+			switch(subItem) {
+			case 0:
+				return rec.m_key.c_str();
+			case 1:
+				return rec.m_value.c_str();
+			default:
+				return "";
+			}
+
+		}
+		bool listCanReorderItems( ctx_t ) override {
+			return true; 
+		}
+		bool listReorderItems( ctx_t, const size_t* order, size_t count) override {
+			PFC_ASSERT( count == m_data.size() );
+			pfc::reorder_t( m_data, order, count );
+			return true;
+		}
+		bool listRemoveItems( ctx_t, pfc::bit_array const & mask) override {
+			pfc::remove_mask_t( m_data, mask );
+			return true;
+		}
+		void listItemAction(ctx_t, size_t item) override {
+			m_list.TableEdit_Start( item, 1 );
+		}
+		void listSubItemClicked( ctx_t, size_t item, size_t subItem) override {
+			if ( subItem == 1 ) {
+				m_list.TableEdit_Start( item, subItem );
+			}
+		}
+		void listSetEditField(ctx_t ctx, size_t item, size_t subItem, const char * val) override {
+			if ( subItem == 1 ) {
+				m_data[item].m_value = val;
+			}
+		}
+		bool listIsColumnEditable( ctx_t, size_t subItem ) override { 
+			return subItem == 1;
+		}
+
+
+		std::vector< listData_t > m_data = makeListData();
+
+		CListControlOwnerData m_list;
+	};
+}
+// Called from mainmenu.cpp
+void RunListControlOwnerDataDemo() {
+	// automatically creates the dialog with object lifetime management and modeless dialog registration
+	fb2k::newDialog<CListControlOwnerDataDemoDialog>();	
+}