EntityClassChooser.h

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#ifndef ENTITYCLASSCHOOSER_H_
#define ENTITYCLASSCHOOSER_H_

#include <gtk/gtk.h>

#include "radiant_i18n.h"
#include "math/Vector3.h"

namespace ui
{
    class EntityClassChooser
    {
        private:

            // Main dialog window
            GtkWidget* _widget;

            // Tree model holding the classnames
            GtkTreeStore* _treeStore;

            // GtkTreeSelection holding the currently-selected classname
            GtkTreeSelection* _selection;

            // Usage information textview
            GtkWidget* _usageTextView;

            // Add button. Needs to be a member since we enable/disable it in the
            // selectionchanged callback.
            GtkWidget* _addButton;

            // The 3D coordinates of the point where the entity must be created.
            Vector3 _lastPoint;

        private:

            /* Widget construction helpers */
            GtkWidget* createTreeView ();
            GtkWidget* createUsagePanel ();
            GtkWidget* createButtonPanel ();

            // Update the usage panel with information from the provided entityclass
            void updateUsageInfo (const std::string& eclass);

            /* GTK callbacks */

            static void addEntity (EntityClassChooser*);

            // Called when close button is clicked, ensure that window is hidden
            // not destroyed.
            static void callbackHide (GtkWidget*, GdkEvent*, EntityClassChooser*);

            // Button callbacks
            static void callbackCancel (GtkWidget*, EntityClassChooser*);
            static void callbackAdd (GtkWidget*, EntityClassChooser*);

            // Check when the selection changes, disable the add button if there
            // is nothing selected.
            static void callbackSelectionChanged (GtkWidget*, EntityClassChooser*);

            // Callbacks for double clicks or button presses
            static gint callbackKeyPress (GtkWidget* widget, GdkEventKey* event, EntityClassChooser*);
            static gint callbackMouseButtonPress (GtkWidget *widget, GdkEventButton *event, EntityClassChooser*);

        public:

            EntityClassChooser ();

            void show (const Vector3& point);

            static void displayInstance (const Vector3& point);
    };
}

#endif /*ENTITYCLASSCHOOSER_H_*/