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456bc6d9 VZ |
1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: wx/containr.h | |
4d98817c | 3 | // Purpose: wxControlContainer and wxNavigationEnabled declarations |
456bc6d9 VZ |
4 | // Author: Vadim Zeitlin |
5 | // Modified by: | |
6 | // Created: 06.08.01 | |
4d98817c | 7 | // Copyright: (c) 2001, 2011 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
65571936 | 8 | // Licence: wxWindows licence |
456bc6d9 VZ |
9 | /////////////////////////////////////////////////////////////////////////////// |
10 | ||
11 | #ifndef _WX_CONTAINR_H_ | |
12 | #define _WX_CONTAINR_H_ | |
13 | ||
617fb24f VZ |
14 | #include "wx/defs.h" |
15 | ||
9f1bf940 VZ |
16 | #ifndef wxHAS_NATIVE_TAB_TRAVERSAL |
17 | // We need wxEVT_XXX declarations in this case. | |
18 | #include "wx/event.h" | |
19 | #endif | |
20 | ||
b5dbe15d VS |
21 | class WXDLLIMPEXP_FWD_CORE wxWindow; |
22 | class WXDLLIMPEXP_FWD_CORE wxWindowBase; | |
bf0e8244 | 23 | |
80332672 | 24 | /* |
4d98817c VZ |
25 | This header declares wxControlContainer class however it's not a real |
26 | container of controls but rather just a helper used to implement TAB | |
27 | navigation among the window children. You should rarely need to use it | |
28 | directly, derive from the documented public wxNavigationEnabled<> class to | |
29 | implement TAB navigation in a custom composite window. | |
80332672 VZ |
30 | */ |
31 | ||
32 | // ---------------------------------------------------------------------------- | |
33 | // wxControlContainerBase: common part used in both native and generic cases | |
34 | // ---------------------------------------------------------------------------- | |
35 | ||
53a2db12 | 36 | class WXDLLIMPEXP_CORE wxControlContainerBase |
80332672 VZ |
37 | { |
38 | public: | |
39 | // default ctor, SetContainerWindow() must be called later | |
40 | wxControlContainerBase() | |
41 | { | |
42 | m_winParent = NULL; | |
43 | ||
e68b7b36 VZ |
44 | // By default, we accept focus ourselves. |
45 | m_acceptsFocusSelf = true; | |
46 | ||
47 | // But we don't have any children accepting it yet. | |
48 | m_acceptsFocusChildren = false; | |
49 | ||
c7bfb76a JS |
50 | m_inSetFocus = false; |
51 | m_winLastFocused = NULL; | |
80332672 | 52 | } |
c7bfb76a | 53 | virtual ~wxControlContainerBase() {} |
80332672 VZ |
54 | |
55 | void SetContainerWindow(wxWindow *winParent) | |
56 | { | |
9a83f860 | 57 | wxASSERT_MSG( !m_winParent, wxT("shouldn't be called twice") ); |
80332672 VZ |
58 | |
59 | m_winParent = winParent; | |
60 | } | |
61 | ||
e68b7b36 VZ |
62 | // This can be called by the window to indicate that it never wants to have |
63 | // the focus for itself. | |
043ad13f VZ |
64 | void DisableSelfFocus() |
65 | { m_acceptsFocusSelf = false; UpdateParentCanFocus(); } | |
66 | ||
67 | // This can be called to undo the effect of a previous DisableSelfFocus() | |
68 | // (otherwise calling it is not necessary as the window does accept focus | |
69 | // by default). | |
70 | void EnableSelfFocus() | |
71 | { m_acceptsFocusSelf = true; UpdateParentCanFocus(); } | |
e68b7b36 | 72 | |
c7bfb76a JS |
73 | // should be called from SetFocus(), returns false if we did nothing with |
74 | // the focus and the default processing should take place | |
75 | bool DoSetFocus(); | |
76 | ||
80332672 | 77 | // returns whether we should accept focus ourselves or not |
1b7c3d90 | 78 | bool AcceptsFocus() const; |
80332672 | 79 | |
e68b7b36 VZ |
80 | // Returns whether we or one of our children accepts focus. |
81 | bool AcceptsFocusRecursively() const | |
bd6ca54f | 82 | { return AcceptsFocus() || |
dee22e31 | 83 | (m_acceptsFocusChildren && HasAnyChildrenAcceptingFocus()); } |
edc09871 | 84 | |
e68b7b36 VZ |
85 | // We accept focus from keyboard if we accept it at all. |
86 | bool AcceptsFocusFromKeyboard() const { return AcceptsFocusRecursively(); } | |
21bf81db | 87 | |
00ff24c8 | 88 | // Call this when the number of children of the window changes. |
e68b7b36 VZ |
89 | // |
90 | // Returns true if we have any focusable children, false otherwise. | |
91 | bool UpdateCanFocusChildren(); | |
80332672 VZ |
92 | |
93 | protected: | |
c7bfb76a JS |
94 | // set the focus to the child which had it the last time |
95 | virtual bool SetFocusToChild(); | |
96 | ||
edc09871 VZ |
97 | // return true if we have any children accepting focus |
98 | bool HasAnyFocusableChildren() const; | |
80332672 | 99 | |
dee22e31 VZ |
100 | // return true if we have any children that do accept focus right now |
101 | bool HasAnyChildrenAcceptingFocus() const; | |
102 | ||
103 | ||
80332672 VZ |
104 | // the parent window we manage the children for |
105 | wxWindow *m_winParent; | |
106 | ||
1c1ad005 JS |
107 | // the child which had the focus last time this panel was activated |
108 | wxWindow *m_winLastFocused; | |
109 | ||
bf0e8244 | 110 | private: |
2c750dae VZ |
111 | // Update the window status to reflect whether it is getting focus or not. |
112 | void UpdateParentCanFocus(); | |
113 | ||
e68b7b36 VZ |
114 | // Indicates whether the associated window can ever have focus itself. |
115 | // | |
116 | // Usually this is the case, e.g. a wxPanel can be used either as a | |
117 | // container for its children or just as a normal window which can be | |
118 | // focused. But sometimes, e.g. for wxStaticBox, we can never have focus | |
119 | // ourselves and can only get it if we have any focusable children. | |
120 | bool m_acceptsFocusSelf; | |
121 | ||
122 | // Cached value remembering whether we have any children accepting focus. | |
123 | bool m_acceptsFocusChildren; | |
c7bfb76a JS |
124 | |
125 | // a guard against infinite recursion | |
126 | bool m_inSetFocus; | |
80332672 VZ |
127 | }; |
128 | ||
4d98817c VZ |
129 | #ifdef wxHAS_NATIVE_TAB_TRAVERSAL |
130 | ||
131 | // ---------------------------------------------------------------------------- | |
132 | // wxControlContainer for native TAB navigation | |
133 | // ---------------------------------------------------------------------------- | |
134 | ||
135 | // this must be a real class as we forward-declare it elsewhere | |
136 | class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase | |
137 | { | |
138 | protected: | |
139 | // set the focus to the child which had it the last time | |
140 | virtual bool SetFocusToChild(); | |
141 | }; | |
142 | ||
143 | #else // !wxHAS_NATIVE_TAB_TRAVERSAL | |
144 | ||
4d98817c VZ |
145 | // ---------------------------------------------------------------------------- |
146 | // wxControlContainer for TAB navigation implemented in wx itself | |
147 | // ---------------------------------------------------------------------------- | |
148 | ||
149 | class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase | |
150 | { | |
151 | public: | |
152 | // default ctor, SetContainerWindow() must be called later | |
153 | wxControlContainer(); | |
154 | ||
155 | // the methods to be called from the window event handlers | |
156 | void HandleOnNavigationKey(wxNavigationKeyEvent& event); | |
157 | void HandleOnFocus(wxFocusEvent& event); | |
158 | void HandleOnWindowDestroy(wxWindowBase *child); | |
159 | ||
160 | // called from OnChildFocus() handler, i.e. when one of our (grand) | |
161 | // children gets the focus | |
162 | void SetLastFocus(wxWindow *win); | |
163 | ||
164 | protected: | |
165 | ||
166 | wxDECLARE_NO_COPY_CLASS(wxControlContainer); | |
167 | }; | |
168 | ||
169 | #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL | |
170 | ||
171 | // this function is for wxWidgets internal use only | |
31af22fa | 172 | extern WXDLLIMPEXP_CORE bool wxSetFocusToChild(wxWindow *win, wxWindow **child); |
4d98817c VZ |
173 | |
174 | // ---------------------------------------------------------------------------- | |
175 | // wxNavigationEnabled: Derive from this class to support keyboard navigation | |
176 | // among window children in a wxWindow-derived class. The details of this class | |
177 | // don't matter, you just need to derive from it to make navigation work. | |
178 | // ---------------------------------------------------------------------------- | |
179 | ||
180 | // The template parameter W must be a wxWindow-derived class. | |
181 | template <class W> | |
182 | class wxNavigationEnabled : public W | |
183 | { | |
184 | public: | |
185 | typedef W BaseWindowClass; | |
186 | ||
187 | wxNavigationEnabled() | |
188 | { | |
189 | m_container.SetContainerWindow(this); | |
190 | ||
191 | #ifndef wxHAS_NATIVE_TAB_TRAVERSAL | |
1f6831ea | 192 | BaseWindowClass::Connect(wxEVT_NAVIGATION_KEY, |
4d98817c VZ |
193 | wxNavigationKeyEventHandler(wxNavigationEnabled::OnNavigationKey)); |
194 | ||
1f6831ea | 195 | BaseWindowClass::Connect(wxEVT_SET_FOCUS, |
4d98817c VZ |
196 | wxFocusEventHandler(wxNavigationEnabled::OnFocus)); |
197 | ||
1f6831ea | 198 | BaseWindowClass::Connect(wxEVT_CHILD_FOCUS, |
4d98817c VZ |
199 | wxChildFocusEventHandler(wxNavigationEnabled::OnChildFocus)); |
200 | #endif // !wxHAS_NATIVE_TAB_TRAVERSAL | |
201 | } | |
202 | ||
87381108 | 203 | WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocus() const |
4d98817c VZ |
204 | { |
205 | return m_container.AcceptsFocus(); | |
206 | } | |
207 | ||
87381108 | 208 | WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusRecursively() const |
4d98817c VZ |
209 | { |
210 | return m_container.AcceptsFocusRecursively(); | |
211 | } | |
212 | ||
87381108 | 213 | WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusFromKeyboard() const |
4d98817c VZ |
214 | { |
215 | return m_container.AcceptsFocusFromKeyboard(); | |
216 | } | |
217 | ||
87381108 | 218 | WXDLLIMPEXP_INLINE_CORE virtual void AddChild(wxWindowBase *child) |
4d98817c VZ |
219 | { |
220 | BaseWindowClass::AddChild(child); | |
221 | ||
861bdae4 VZ |
222 | if ( m_container.UpdateCanFocusChildren() ) |
223 | { | |
224 | // Under MSW we must have wxTAB_TRAVERSAL style for TAB navigation | |
225 | // to work. | |
226 | if ( !BaseWindowClass::HasFlag(wxTAB_TRAVERSAL) ) | |
227 | BaseWindowClass::ToggleWindowStyle(wxTAB_TRAVERSAL); | |
228 | } | |
4d98817c VZ |
229 | } |
230 | ||
87381108 | 231 | WXDLLIMPEXP_INLINE_CORE virtual void RemoveChild(wxWindowBase *child) |
4d98817c VZ |
232 | { |
233 | #ifndef wxHAS_NATIVE_TAB_TRAVERSAL | |
234 | m_container.HandleOnWindowDestroy(child); | |
235 | #endif // !wxHAS_NATIVE_TAB_TRAVERSAL | |
236 | ||
237 | BaseWindowClass::RemoveChild(child); | |
238 | ||
861bdae4 VZ |
239 | // We could reset wxTAB_TRAVERSAL here but it doesn't seem to do any |
240 | // harm to keep it. | |
e68b7b36 | 241 | m_container.UpdateCanFocusChildren(); |
4d98817c VZ |
242 | } |
243 | ||
87381108 | 244 | WXDLLIMPEXP_INLINE_CORE virtual void SetFocus() |
4d98817c VZ |
245 | { |
246 | if ( !m_container.DoSetFocus() ) | |
247 | BaseWindowClass::SetFocus(); | |
248 | } | |
249 | ||
250 | void SetFocusIgnoringChildren() | |
251 | { | |
252 | BaseWindowClass::SetFocus(); | |
253 | } | |
254 | ||
4d98817c VZ |
255 | protected: |
256 | #ifndef wxHAS_NATIVE_TAB_TRAVERSAL | |
257 | void OnNavigationKey(wxNavigationKeyEvent& event) | |
258 | { | |
259 | m_container.HandleOnNavigationKey(event); | |
260 | } | |
261 | ||
262 | void OnFocus(wxFocusEvent& event) | |
263 | { | |
264 | m_container.HandleOnFocus(event); | |
265 | } | |
266 | ||
267 | void OnChildFocus(wxChildFocusEvent& event) | |
268 | { | |
269 | m_container.SetLastFocus(event.GetWindow()); | |
270 | event.Skip(); | |
271 | } | |
272 | #endif // !wxHAS_NATIVE_TAB_TRAVERSAL | |
273 | ||
274 | wxControlContainer m_container; | |
275 | ||
276 | ||
277 | wxDECLARE_NO_COPY_TEMPLATE_CLASS(wxNavigationEnabled, W); | |
278 | }; | |
279 | ||
280 | // ---------------------------------------------------------------------------- | |
281 | // Compatibility macros from now on, do NOT use them and preferably do not even | |
282 | // look at them. | |
283 | // ---------------------------------------------------------------------------- | |
284 | ||
7bc57fd9 | 285 | #if WXWIN_COMPATIBILITY_2_8 |
4d98817c | 286 | |
80332672 VZ |
287 | // common part of WX_DECLARE_CONTROL_CONTAINER in the native and generic cases, |
288 | // it should be used in the wxWindow-derived class declaration | |
289 | #define WX_DECLARE_CONTROL_CONTAINER_BASE() \ | |
290 | public: \ | |
291 | virtual bool AcceptsFocus() const; \ | |
edc09871 | 292 | virtual bool AcceptsFocusRecursively() const; \ |
21bf81db | 293 | virtual bool AcceptsFocusFromKeyboard() const; \ |
80332672 VZ |
294 | virtual void AddChild(wxWindowBase *child); \ |
295 | virtual void RemoveChild(wxWindowBase *child); \ | |
c7bfb76a | 296 | virtual void SetFocus(); \ |
80332672 | 297 | void SetFocusIgnoringChildren(); \ |
80332672 VZ |
298 | \ |
299 | protected: \ | |
300 | wxControlContainer m_container | |
301 | ||
302 | // this macro must be used in the derived class ctor | |
303 | #define WX_INIT_CONTROL_CONTAINER() \ | |
304 | m_container.SetContainerWindow(this) | |
305 | ||
306 | // common part of WX_DELEGATE_TO_CONTROL_CONTAINER in the native and generic | |
307 | // cases, must be used in the wxWindow-derived class implementation | |
308 | #define WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \ | |
309 | void classname::AddChild(wxWindowBase *child) \ | |
310 | { \ | |
311 | basename::AddChild(child); \ | |
312 | \ | |
e68b7b36 | 313 | m_container.UpdateCanFocusChildren(); \ |
80332672 VZ |
314 | } \ |
315 | \ | |
edc09871 VZ |
316 | bool classname::AcceptsFocusRecursively() const \ |
317 | { \ | |
318 | return m_container.AcceptsFocusRecursively(); \ | |
319 | } \ | |
320 | \ | |
c7bfb76a JS |
321 | void classname::SetFocus() \ |
322 | { \ | |
323 | if ( !m_container.DoSetFocus() ) \ | |
324 | basename::SetFocus(); \ | |
325 | } \ | |
326 | \ | |
80332672 VZ |
327 | bool classname::AcceptsFocus() const \ |
328 | { \ | |
329 | return m_container.AcceptsFocus(); \ | |
21bf81db VZ |
330 | } \ |
331 | \ | |
332 | bool classname::AcceptsFocusFromKeyboard() const \ | |
333 | { \ | |
334 | return m_container.AcceptsFocusFromKeyboard(); \ | |
80332672 VZ |
335 | } |
336 | ||
de160b06 | 337 | |
4d98817c | 338 | #ifdef wxHAS_NATIVE_TAB_TRAVERSAL |
de160b06 | 339 | |
de160b06 | 340 | #define WX_EVENT_TABLE_CONTROL_CONTAINER(classname) |
80332672 VZ |
341 | |
342 | #define WX_DECLARE_CONTROL_CONTAINER WX_DECLARE_CONTROL_CONTAINER_BASE | |
343 | ||
344 | #define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename) \ | |
345 | WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \ | |
346 | \ | |
347 | void classname::RemoveChild(wxWindowBase *child) \ | |
348 | { \ | |
349 | basename::RemoveChild(child); \ | |
350 | \ | |
e68b7b36 | 351 | m_container.UpdateCanFocusChildren(); \ |
80332672 VZ |
352 | } \ |
353 | \ | |
354 | void classname::SetFocusIgnoringChildren() \ | |
355 | { \ | |
00ff24c8 | 356 | basename::SetFocus(); \ |
80332672 | 357 | } |
de160b06 VZ |
358 | |
359 | #else // !wxHAS_NATIVE_TAB_TRAVERSAL | |
360 | ||
456bc6d9 | 361 | // declare the methods to be forwarded |
d1cd787b VZ |
362 | #define WX_DECLARE_CONTROL_CONTAINER() \ |
363 | WX_DECLARE_CONTROL_CONTAINER_BASE(); \ | |
364 | \ | |
365 | public: \ | |
366 | void OnNavigationKey(wxNavigationKeyEvent& event); \ | |
367 | void OnFocus(wxFocusEvent& event); \ | |
c7bfb76a | 368 | virtual void OnChildFocus(wxChildFocusEvent& event) |
456bc6d9 VZ |
369 | |
370 | // implement the event table entries for wxControlContainer | |
371 | #define WX_EVENT_TABLE_CONTROL_CONTAINER(classname) \ | |
372 | EVT_SET_FOCUS(classname::OnFocus) \ | |
373 | EVT_CHILD_FOCUS(classname::OnChildFocus) \ | |
374 | EVT_NAVIGATION_KEY(classname::OnNavigationKey) | |
375 | ||
376 | // implement the methods forwarding to the wxControlContainer | |
80332672 VZ |
377 | #define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename) \ |
378 | WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \ | |
379 | \ | |
380 | void classname::RemoveChild(wxWindowBase *child) \ | |
381 | { \ | |
382 | m_container.HandleOnWindowDestroy(child); \ | |
383 | \ | |
384 | basename::RemoveChild(child); \ | |
385 | \ | |
e68b7b36 | 386 | m_container.UpdateCanFocusChildren(); \ |
80332672 VZ |
387 | } \ |
388 | \ | |
389 | void classname::OnNavigationKey( wxNavigationKeyEvent& event ) \ | |
390 | { \ | |
391 | m_container.HandleOnNavigationKey(event); \ | |
392 | } \ | |
393 | \ | |
80332672 VZ |
394 | void classname::SetFocusIgnoringChildren() \ |
395 | { \ | |
396 | basename::SetFocus(); \ | |
397 | } \ | |
398 | \ | |
399 | void classname::OnChildFocus(wxChildFocusEvent& event) \ | |
400 | { \ | |
401 | m_container.SetLastFocus(event.GetWindow()); \ | |
57c5c10f | 402 | event.Skip(); \ |
80332672 VZ |
403 | } \ |
404 | \ | |
405 | void classname::OnFocus(wxFocusEvent& event) \ | |
406 | { \ | |
407 | m_container.HandleOnFocus(event); \ | |
1c1ad005 | 408 | } |
456bc6d9 | 409 | |
de160b06 | 410 | #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL |
456bc6d9 | 411 | |
4d98817c | 412 | #endif // WXWIN_COMPATIBILITY_2_8 |
c7bfb76a | 413 | |
456bc6d9 | 414 | #endif // _WX_CONTAINR_H_ |