1 /* AbiSource Program Utilities
2  * Copyright (C) 1998 AbiSource, Inc.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301 USA.
18  */
19 
20 #ifndef EV_MENU_ACTIONS_H
21 #define EV_MENU_ACTIONS_H
22 
23 /****************************************************************
24 *****************************************************************
25 ** This file defines a framework for the set of actions which
26 ** may be bound to a menu Id.  This binding is independent of
27 ** the actual menu containing the item and actual menu layout.
28 **
29 ** For example, we may have "File|Open" on the unique menus
30 ** for three different types of top-level windows and on a
31 ** context menu, but they all do the same fire the same event
32 ** (have the same binding).
33 **
34 ** We create one EV_Menu_Action per menu-item per application.
35 **
36 ** We create one EV_Menu_ActionSet per application.
37 **
38 *****************************************************************
39 ****************************************************************/
40 
41 #include "ut_types.h"
42 #include "xap_Types.h"
43 #include "ut_vector.h"
44 #include "ut_string_class.h"
45 
46 class XAP_App;
47 class XAP_Frame;
48 class AV_View;
49 class EV_Menu_Label;
50 
51 // TODO consider removing bHoldsSubMenu bit from this file.
52 
53 /*****************************************************************/
54 
55 typedef enum _ev_Menu_ItemState			/* values may be ORed */
56 {
57 	EV_MIS_ZERO		= 0x00,				/* nothing is turned on */
58 	EV_MIS_Gray		= 0x01,				/* item is or should be gray */
59 	EV_MIS_Toggled 	= 0x02,				/* checkable item should be checked */
60 	EV_MIS_Bold		= 0x04				/* item is or should be bold */
61 
62 } EV_Menu_ItemState;
63 
64 typedef EV_Menu_ItemState ( EV_GetMenuItemState_Fn )(AV_View * pView, XAP_Menu_Id id);
65 typedef EV_Menu_ItemState (*EV_GetMenuItemState_pFn)(AV_View * pView, XAP_Menu_Id id);
66 #ifdef ABI_DLL
67 #define Defun_EV_GetMenuItemState_Fn(fn) EV_Menu_ItemState fn(AV_View * pAV_View, XAP_Menu_Id id)
68 #else
69 #define Defun_EV_GetMenuItemState_Fn(fn) ABI_EXPORT EV_Menu_ItemState fn(AV_View * pAV_View, XAP_Menu_Id id)
70 #endif
71 
72 // TODO decide if ...GetMenuItemComputedLabel... should take an XAP_App or an AV_View.
73 // TODO for most-recently-used-file-list and window-history, we probably just need
74 // TODO the ap.  but for view-specific things (like toggles where we change the menu
75 // TODO item name rather than doing a checkmark), we need the view.
76 
77 // for now, current (quick) compromise is to pass the XAP_Frame,
78 // because you can get to either of them easily from there -- pcr
79 
80 typedef const char * ( EV_GetMenuItemComputedLabel_Fn )(const EV_Menu_Label * pLabel, XAP_Menu_Id id);
81 typedef const char * (*EV_GetMenuItemComputedLabel_pFn)(const EV_Menu_Label * pLabel, XAP_Menu_Id id);
82 #ifdef ABI_DLL
83 #define Defun_EV_GetMenuItemComputedLabel_Fn(fn) const char * fn(const EV_Menu_Label * pLabel, XAP_Menu_Id id)
84 #else
85 #define Defun_EV_GetMenuItemComputedLabel_Fn(fn) ABI_EXPORT const char * fn(const EV_Menu_Label * pLabel, XAP_Menu_Id id)
86 #endif
87 
88 /*****************************************************************/
89 
90 class ABI_EXPORT EV_Menu_Action
91 {
92 public:
93 	EV_Menu_Action(XAP_Menu_Id id,
94 				   bool bHoldsSubMenu,
95 				   bool bRaisesDialog,
96 				   bool bCheckable,
97 				   bool bRadio,
98 				   const char* szMethodName,
99 				   EV_GetMenuItemState_pFn pfnGetState,
100 				   EV_GetMenuItemComputedLabel_pFn pfnGetLabel,
101 				   const UT_String& stScriptName = "");
102 	~EV_Menu_Action();
103 
104 	XAP_Menu_Id						getMenuId() const;
105 	void 						    incrementId(void);
106 	bool							hasDynamicLabel() const;
107 	const char*						getDynamicLabel(const EV_Menu_Label * pLabel) const;
108 	const char*						getMethodName() const;
getScriptName()109 	const UT_String&				getScriptName() const { return m_stScriptName; }
110 	bool							hasGetStateFunction() const;
111 	EV_Menu_ItemState				getMenuItemState(AV_View * pView) const;
112 	bool							raisesDialog() const;
113 	bool							isCheckable() const;
114 	bool                            isRadio () const;
115 
116 private:
117 	XAP_Menu_Id						m_id;
118 	bool							m_bHoldsSubMenu;	/* is a PullRight */
119 	bool							m_bRaisesDialog;	/* does it raise a dialog */
120 	bool							m_bCheckable;		/* is it checkable */
121 	bool							m_bRadio;		    /* is it radio */
122 	char *							m_szMethodName;		/* name of method to invoke */
123 	EV_GetMenuItemState_pFn			m_pfnGetState;		/* to get state on an activate */
124 	EV_GetMenuItemComputedLabel_pFn m_pfnGetLabel;		/* to get computed label (for things like window-list) */
125 	UT_String						m_stScriptName;		/* extra data that the method may need */
126 };
127 
128 /*****************************************************************/
129 
130 class ABI_EXPORT EV_Menu_ActionSet					/* a glorified array with bounds checking */
131 {
132 public:
133 	EV_Menu_ActionSet(XAP_Menu_Id first, XAP_Menu_Id last);
134 	~EV_Menu_ActionSet();
135 
136 	bool				setAction(XAP_Menu_Id id,
137 								  bool bHoldsSubMenu,
138 								  bool bRaisesDialog,
139 								  bool bCheckable,
140 								  bool bRadio,
141 								  const char * szMethodName,
142 								  EV_GetMenuItemState_pFn pfnGetState,
143 								  EV_GetMenuItemComputedLabel_pFn pfnGetLabel,
144 								  const UT_String& stScriptName = "");
145 	bool				addAction(EV_Menu_Action *pAction);
146 
147 	const EV_Menu_Action *	getAction(XAP_Menu_Id id) const;
148 
149 private:
150 	UT_GenericVector<EV_Menu_Action *>	m_actionTable;
151 	XAP_Menu_Id			m_first;
152 };
153 
154 #endif /* EV_MENU_ACTIONS_H */
155