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21 
22 
23 
24 #ifndef SD_TASKPANE_CONTROL_FACTORY_HXX
25 #define SD_TASKPANE_CONTROL_FACTORY_HXX
26 
27 #include "taskpane/TaskPaneTreeNode.hxx"
28 
29 #include <memory>
30 
31 namespace sd {
32 class ViewShellBase;
33 }
34 
35 namespace sd { namespace toolpanel {
36 class TreeNode;
37 } }
38 
39 
40 
41 
42 namespace sd { namespace toolpanel {
43 
44 /** A simple factory base class defines the interface that is used by
45 	some of the control containers of the task pane to create controls on
46 	demand when they are about to be displayed for the first time.
47 
48 	It provides the InternalCreateControl() method as hook that can be
49 	overloaded by derived classes to provide a new control.
50 */
51 class ControlFactory
52 {
53 public:
54 	ControlFactory (void);
55 	virtual ~ControlFactory (void);
56 
57 	/** creates a tree node which acts as root of an own tree
58 
59 		Derived classes should overload InternalCreateControl.
60 	*/
61 	::std::auto_ptr<TreeNode> CreateControl( ::Window& i_rParent );
62 
63 protected:
64 	virtual TreeNode* InternalCreateControl( ::Window& i_rParent ) = 0;
65 };
66 
67 
68 
69 /** A simple helper class that realizes a ControlFactory that is able to create root controls, providing
70 	the to-be-created control with an additional parameter.
71 */
72 template<class ControlType, class ArgumentType>
73 class RootControlFactoryWithArg
74 	: public ControlFactory
75 {
76 public:
RootControlFactoryWithArg(ArgumentType & rArgument)77 	RootControlFactoryWithArg (ArgumentType& rArgument)
78 		: mrArgument(rArgument)
79 	{}
80 
81 protected:
InternalCreateControl(::Window & i_rParent)82 	virtual TreeNode* InternalCreateControl( ::Window& i_rParent )
83 	{
84 		return new ControlType( i_rParent, mrArgument );
85 	}
86 
87 private:
88 	ArgumentType& mrArgument;
89 };
90 
91 
92 } } // end of namespace ::sd::toolpanel
93 
94 #endif
95