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utils/vgui_panel_zoo/QueryBoxDemo.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "DemoPage.h"
+
+#include <VGUI/IVGui.h>
+#include <vgui_controls/Controls.h>
+
+#include <Keyvalues.h>
+#include <vgui_controls/Button.h>
+#include <vgui_controls/QueryBox.h>
+
+
+using namespace vgui;
+
+// Query boxes are windows that pop up in response to events.
+// They are useful for asking questions (like... "Are you sure you want to do this?").
+// In this example we will trigger the opening of a query box when
+// a button is pressed.
+// Query boxes are Message boxes that have an OK and a Cancel button, 
+// each button may be linked to an additional command in order to trigger an
+// appropriate response.
+
+class QueryBoxDemo: public DemoPage
+{
+	public:
+		QueryBoxDemo(Panel *parent, const char *name);
+		~QueryBoxDemo();
+
+		void OnButtonClicked();
+		void ShowQueryBox();
+		void OnOK();
+		void OnCancel();
+
+	private:
+		Button *m_pButton;
+
+		DECLARE_PANELMAP();
+};
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+QueryBoxDemo::QueryBoxDemo(Panel *parent, const char *name) : DemoPage(parent, name)
+{
+	// Create a button to trigger the message box.
+	m_pButton = new Button(this, "AButton", "Click Me For A Question");
+
+	// Size the button to its text.
+	m_pButton->SizeToContents();
+
+	// Set its position.
+	m_pButton->SetPos(100, 100);
+
+	// Install a command that will be executed when the button is pressed
+	// Here we use a KeyValues command, this is mapped using the Message map
+	// below to a function.
+	m_pButton->SetCommand(new KeyValues ("ButtonClicked"));
+
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Destructor
+//-----------------------------------------------------------------------------
+QueryBoxDemo::~QueryBoxDemo()
+{
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose:	 Respond to a message based action signal
+//    Popup the query box.
+//-----------------------------------------------------------------------------
+void QueryBoxDemo::OnButtonClicked()
+{
+	ivgui()->DPrintf("Button was clicked.\n");
+
+	// When the button is clicked we open the message box in response.
+	ShowQueryBox();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:	Display a query box
+//-----------------------------------------------------------------------------
+void QueryBoxDemo::ShowQueryBox()
+{
+   	// create a new message box.
+	// The first arg is the name of the window and will be across the top.
+	// The second arg is the text that will appear in the message box.
+
+	QueryBox *pQuery = new QueryBox ("Message Window", "Will you pick OK or Cancel?");
+
+	// Make ourselves the target of the button messages
+	pQuery->AddActionSignalTarget(this);
+
+	// Install the message to be sent when the ok button is clicked.
+	pQuery->SetOKCommand(new KeyValues("OKClicked"));
+
+	// Install the message to be sent when the cancel button is clicked.
+	pQuery->SetCancelCommand(new KeyValues("Cancel"));
+
+	// This command will pop up the message box and hold it there until we click
+	// a button. When a button is clicked the query box object is destroyed.
+	pQuery->DoModal();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:	 Respond to a message based action signal
+//   Respond to the OK button in the query box. 
+//-----------------------------------------------------------------------------
+void QueryBoxDemo::OnOK()
+{
+	ivgui()->DPrintf("Query received the OK.\n");
+}
+
+//-----------------------------------------------------------------------------	
+// Purpose:	 Respond to a message based action signal
+//   Respond to the Cancel button in the query box
+//-----------------------------------------------------------------------------
+void QueryBoxDemo::OnCancel()
+{
+	ivgui()->DPrintf("Query was canceled.\n");
+}
+
+
+
+MessageMapItem_t QueryBoxDemo::m_MessageMap[] =
+{
+	MAP_MESSAGE( QueryBoxDemo, "ButtonClicked", OnButtonClicked ), 
+	MAP_MESSAGE( QueryBoxDemo, "OKClicked", OnOK ), 
+	MAP_MESSAGE( QueryBoxDemo, "Cancel", OnCancel ), 
+
+};
+
+IMPLEMENT_PANELMAP(QueryBoxDemo, DemoPage);
+
+
+
+Panel* QueryBoxDemo_Create(Panel *parent)
+{
+	return new QueryBoxDemo(parent, "QueryBoxDemo");
+}
+
+