| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/containr.cpp |
| 3 | // Purpose: implementation of wxControlContainer |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 06.08.01 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #ifndef WX_PRECOMP |
| 28 | #include "wx/containr.h" |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/log.h" |
| 33 | #include "wx/event.h" |
| 34 | #include "wx/window.h" |
| 35 | #include "wx/scrolbar.h" |
| 36 | #include "wx/radiobut.h" |
| 37 | #endif //WX_PRECOMP |
| 38 | |
| 39 | // trace mask for focus messages |
| 40 | #define TRACE_FOCUS wxT("focus") |
| 41 | |
| 42 | // ============================================================================ |
| 43 | // implementation |
| 44 | // ============================================================================ |
| 45 | |
| 46 | // ---------------------------------------------------------------------------- |
| 47 | // wxControlContainerBase |
| 48 | // ---------------------------------------------------------------------------- |
| 49 | |
| 50 | void wxControlContainerBase::SetCanFocus(bool acceptsFocus) |
| 51 | { |
| 52 | if ( acceptsFocus == m_acceptsFocus ) |
| 53 | return; |
| 54 | |
| 55 | m_acceptsFocus = acceptsFocus; |
| 56 | |
| 57 | m_winParent->SetCanFocus(m_acceptsFocus); |
| 58 | } |
| 59 | |
| 60 | bool wxControlContainerBase::HasAnyFocusableChildren() const |
| 61 | { |
| 62 | const wxWindowList& children = m_winParent->GetChildren(); |
| 63 | for ( wxWindowList::const_iterator i = children.begin(), |
| 64 | end = children.end(); |
| 65 | i != end; |
| 66 | ++i ) |
| 67 | { |
| 68 | const wxWindow * const child = *i; |
| 69 | |
| 70 | if ( !m_winParent->IsClientAreaChild(child) ) |
| 71 | continue; |
| 72 | |
| 73 | if ( child->CanAcceptFocus() ) |
| 74 | return true; |
| 75 | } |
| 76 | |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | bool wxControlContainerBase::DoSetFocus() |
| 81 | { |
| 82 | wxLogTrace(TRACE_FOCUS, wxT("SetFocus on wxPanel 0x%p."), |
| 83 | m_winParent->GetHandle()); |
| 84 | |
| 85 | if (m_inSetFocus) |
| 86 | return true; |
| 87 | |
| 88 | // when the panel gets the focus we move the focus to either the last |
| 89 | // window that had the focus or the first one that can get it unless the |
| 90 | // focus had been already set to some other child |
| 91 | |
| 92 | wxWindow *win = wxWindow::FindFocus(); |
| 93 | while ( win ) |
| 94 | { |
| 95 | if ( win == m_winParent ) |
| 96 | { |
| 97 | // our child already has focus, don't take it away from it |
| 98 | return true; |
| 99 | } |
| 100 | |
| 101 | if ( win->IsTopLevel() ) |
| 102 | { |
| 103 | // don't look beyond the first top level parent - useless and |
| 104 | // unnecessary |
| 105 | break; |
| 106 | } |
| 107 | |
| 108 | win = win->GetParent(); |
| 109 | } |
| 110 | |
| 111 | // protect against infinite recursion: |
| 112 | m_inSetFocus = true; |
| 113 | |
| 114 | bool ret = SetFocusToChild(); |
| 115 | |
| 116 | m_inSetFocus = false; |
| 117 | |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | bool wxControlContainerBase::SetFocusToChild() |
| 122 | { |
| 123 | return wxSetFocusToChild(m_winParent, &m_winLastFocused); |
| 124 | } |
| 125 | |
| 126 | #ifndef wxHAS_NATIVE_TAB_TRAVERSAL |
| 127 | |
| 128 | // ---------------------------------------------------------------------------- |
| 129 | // generic wxControlContainer |
| 130 | // ---------------------------------------------------------------------------- |
| 131 | |
| 132 | wxControlContainer::wxControlContainer() |
| 133 | { |
| 134 | m_winLastFocused = NULL; |
| 135 | } |
| 136 | |
| 137 | void wxControlContainer::SetLastFocus(wxWindow *win) |
| 138 | { |
| 139 | // the panel itself should never get the focus at all but if it does happen |
| 140 | // temporarily (as it seems to do under wxGTK), at the very least don't |
| 141 | // forget our previous m_winLastFocused |
| 142 | if ( win != m_winParent ) |
| 143 | { |
| 144 | // if we're setting the focus |
| 145 | if ( win ) |
| 146 | { |
| 147 | // find the last _immediate_ child which got focus |
| 148 | wxWindow *winParent = win; |
| 149 | while ( winParent != m_winParent ) |
| 150 | { |
| 151 | win = winParent; |
| 152 | winParent = win->GetParent(); |
| 153 | |
| 154 | // Yes, this can happen, though in a totally pathological case. |
| 155 | // like when detaching a menubar from a frame with a child |
| 156 | // which has pushed itself as an event handler for the menubar. |
| 157 | // (under wxGTK) |
| 158 | |
| 159 | wxASSERT_MSG( winParent, |
| 160 | wxT("Setting last focus for a window that is not our child?") ); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | m_winLastFocused = win; |
| 165 | |
| 166 | if ( win ) |
| 167 | { |
| 168 | wxLogTrace(TRACE_FOCUS, wxT("Set last focus to %s(%s)"), |
| 169 | win->GetClassInfo()->GetClassName(), |
| 170 | win->GetLabel().c_str()); |
| 171 | } |
| 172 | else |
| 173 | { |
| 174 | wxLogTrace(TRACE_FOCUS, wxT("No more last focus")); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | // propagate the last focus upwards so that our parent can set focus back |
| 179 | // to us if it loses it now and regains later; do *not* do this if we are |
| 180 | // a toplevel window (e.g. wxDialog) that has another frame as its parent |
| 181 | if ( !m_winParent->IsTopLevel() ) |
| 182 | { |
| 183 | wxWindow *parent = m_winParent->GetParent(); |
| 184 | if ( parent ) |
| 185 | { |
| 186 | wxChildFocusEvent eventFocus(m_winParent); |
| 187 | parent->GetEventHandler()->ProcessEvent(eventFocus); |
| 188 | } |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | // -------------------------------------------------------------------- |
| 193 | // The following four functions are used to find other radio buttons |
| 194 | // within the same group. Used by wxSetFocusToChild on wxMSW |
| 195 | // -------------------------------------------------------------------- |
| 196 | |
| 197 | #if defined(__WXMSW__) && wxUSE_RADIOBTN |
| 198 | |
| 199 | wxRadioButton* wxGetPreviousButtonInGroup(wxRadioButton *btn) |
| 200 | { |
| 201 | if ( btn->HasFlag(wxRB_GROUP) || btn->HasFlag(wxRB_SINGLE) ) |
| 202 | return NULL; |
| 203 | |
| 204 | const wxWindowList& siblings = btn->GetParent()->GetChildren(); |
| 205 | wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn); |
| 206 | wxCHECK_MSG( nodeThis, NULL, wxT("radio button not a child of its parent?") ); |
| 207 | |
| 208 | // Iterate over all previous siblings until we find the next radio button |
| 209 | wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious(); |
| 210 | wxRadioButton *prevBtn = 0; |
| 211 | while (nodeBefore) |
| 212 | { |
| 213 | prevBtn = wxDynamicCast(nodeBefore->GetData(), wxRadioButton); |
| 214 | if (prevBtn) |
| 215 | break; |
| 216 | |
| 217 | nodeBefore = nodeBefore->GetPrevious(); |
| 218 | } |
| 219 | |
| 220 | if (!prevBtn || prevBtn->HasFlag(wxRB_SINGLE)) |
| 221 | { |
| 222 | // no more buttons in group |
| 223 | return NULL; |
| 224 | } |
| 225 | |
| 226 | return prevBtn; |
| 227 | } |
| 228 | |
| 229 | wxRadioButton* wxGetNextButtonInGroup(wxRadioButton *btn) |
| 230 | { |
| 231 | if (btn->HasFlag(wxRB_SINGLE)) |
| 232 | return NULL; |
| 233 | |
| 234 | const wxWindowList& siblings = btn->GetParent()->GetChildren(); |
| 235 | wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn); |
| 236 | wxCHECK_MSG( nodeThis, NULL, wxT("radio button not a child of its parent?") ); |
| 237 | |
| 238 | // Iterate over all previous siblings until we find the next radio button |
| 239 | wxWindowList::compatibility_iterator nodeNext = nodeThis->GetNext(); |
| 240 | wxRadioButton *nextBtn = 0; |
| 241 | while (nodeNext) |
| 242 | { |
| 243 | nextBtn = wxDynamicCast(nodeNext->GetData(), wxRadioButton); |
| 244 | if (nextBtn) |
| 245 | break; |
| 246 | |
| 247 | nodeNext = nodeNext->GetNext(); |
| 248 | } |
| 249 | |
| 250 | if ( !nextBtn || nextBtn->HasFlag(wxRB_GROUP) || nextBtn->HasFlag(wxRB_SINGLE) ) |
| 251 | { |
| 252 | // no more buttons or the first button of the next group |
| 253 | return NULL; |
| 254 | } |
| 255 | |
| 256 | return nextBtn; |
| 257 | } |
| 258 | |
| 259 | wxRadioButton* wxGetFirstButtonInGroup(wxRadioButton *btn) |
| 260 | { |
| 261 | while (true) |
| 262 | { |
| 263 | wxRadioButton* prevBtn = wxGetPreviousButtonInGroup(btn); |
| 264 | if (!prevBtn) |
| 265 | return btn; |
| 266 | |
| 267 | btn = prevBtn; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | wxRadioButton* wxGetLastButtonInGroup(wxRadioButton *btn) |
| 272 | { |
| 273 | while (true) |
| 274 | { |
| 275 | wxRadioButton* nextBtn = wxGetNextButtonInGroup(btn); |
| 276 | if (!nextBtn) |
| 277 | return btn; |
| 278 | |
| 279 | btn = nextBtn; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | wxRadioButton* wxGetSelectedButtonInGroup(wxRadioButton *btn) |
| 284 | { |
| 285 | // Find currently selected button |
| 286 | if (btn->GetValue()) |
| 287 | return btn; |
| 288 | |
| 289 | if (btn->HasFlag(wxRB_SINGLE)) |
| 290 | return NULL; |
| 291 | |
| 292 | wxRadioButton *selBtn; |
| 293 | |
| 294 | // First check all previous buttons |
| 295 | for (selBtn = wxGetPreviousButtonInGroup(btn); selBtn; selBtn = wxGetPreviousButtonInGroup(selBtn)) |
| 296 | if (selBtn->GetValue()) |
| 297 | return selBtn; |
| 298 | |
| 299 | // Now all following buttons |
| 300 | for (selBtn = wxGetNextButtonInGroup(btn); selBtn; selBtn = wxGetNextButtonInGroup(selBtn)) |
| 301 | if (selBtn->GetValue()) |
| 302 | return selBtn; |
| 303 | |
| 304 | return NULL; |
| 305 | } |
| 306 | |
| 307 | #endif // __WXMSW__ |
| 308 | |
| 309 | // ---------------------------------------------------------------------------- |
| 310 | // Keyboard handling - this is the place where the TAB traversal logic is |
| 311 | // implemented. As this code is common to all ports, this ensures consistent |
| 312 | // behaviour even if we don't specify how exactly the wxNavigationKeyEvent are |
| 313 | // generated and this is done in platform specific code which also ensures that |
| 314 | // we can follow the given platform standards. |
| 315 | // ---------------------------------------------------------------------------- |
| 316 | |
| 317 | void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) |
| 318 | { |
| 319 | // for a TLW we shouldn't involve the parent window, it has nothing to do |
| 320 | // with keyboard navigation inside this TLW |
| 321 | wxWindow *parent = m_winParent->IsTopLevel() ? NULL |
| 322 | : m_winParent->GetParent(); |
| 323 | |
| 324 | // the event is propagated downwards if the event emitter was our parent |
| 325 | bool goingDown = event.GetEventObject() == parent; |
| 326 | |
| 327 | const wxWindowList& children = m_winParent->GetChildren(); |
| 328 | |
| 329 | // if we have exactly one notebook-like child window (actually it could be |
| 330 | // any window that returns true from its HasMultiplePages()), then |
| 331 | // [Shift-]Ctrl-Tab and Ctrl-PageUp/Down keys should iterate over its pages |
| 332 | // even if the focus is outside of the control because this is how the |
| 333 | // standard MSW properties dialogs behave and we do it under other platforms |
| 334 | // as well because it seems like a good idea -- but we can always put this |
| 335 | // block inside "#ifdef __WXMSW__" if it's not suitable there |
| 336 | if ( event.IsWindowChange() && !goingDown ) |
| 337 | { |
| 338 | // check if we have a unique notebook-like child |
| 339 | wxWindow *bookctrl = NULL; |
| 340 | for ( wxWindowList::const_iterator i = children.begin(), |
| 341 | end = children.end(); |
| 342 | i != end; |
| 343 | ++i ) |
| 344 | { |
| 345 | wxWindow * const window = *i; |
| 346 | if ( window->HasMultiplePages() ) |
| 347 | { |
| 348 | if ( bookctrl ) |
| 349 | { |
| 350 | // this is the second book-like control already so don't do |
| 351 | // anything as we don't know which one should have its page |
| 352 | // changed |
| 353 | bookctrl = NULL; |
| 354 | break; |
| 355 | } |
| 356 | |
| 357 | bookctrl = window; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | if ( bookctrl ) |
| 362 | { |
| 363 | // make sure that we don't bubble up the event again from the book |
| 364 | // control resulting in infinite recursion |
| 365 | wxNavigationKeyEvent eventCopy(event); |
| 366 | eventCopy.SetEventObject(m_winParent); |
| 367 | if ( bookctrl->GetEventHandler()->ProcessEvent(eventCopy) ) |
| 368 | return; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | // there is not much to do if we don't have children and we're not |
| 373 | // interested in "notebook page change" events here |
| 374 | if ( !children.GetCount() || event.IsWindowChange() ) |
| 375 | { |
| 376 | // let the parent process it unless it already comes from our parent |
| 377 | // of we don't have any |
| 378 | if ( goingDown || |
| 379 | !parent || !parent->GetEventHandler()->ProcessEvent(event) ) |
| 380 | { |
| 381 | event.Skip(); |
| 382 | } |
| 383 | |
| 384 | return; |
| 385 | } |
| 386 | |
| 387 | // where are we going? |
| 388 | const bool forward = event.GetDirection(); |
| 389 | |
| 390 | // the node of the children list from which we should start looking for the |
| 391 | // next acceptable child |
| 392 | wxWindowList::compatibility_iterator node, start_node; |
| 393 | |
| 394 | // we should start from the first/last control and not from the one which |
| 395 | // had focus the last time if we're propagating the event downwards because |
| 396 | // for our parent we look like a single control |
| 397 | if ( goingDown ) |
| 398 | { |
| 399 | // just to be sure it's not used (normally this is not necessary, but |
| 400 | // doesn't hurt neither) |
| 401 | m_winLastFocused = NULL; |
| 402 | |
| 403 | // start from first or last depending on where we're going |
| 404 | node = forward ? children.GetFirst() : children.GetLast(); |
| 405 | } |
| 406 | else // going up |
| 407 | { |
| 408 | // try to find the child which has the focus currently |
| 409 | |
| 410 | // the event emitter might have done this for us |
| 411 | wxWindow *winFocus = event.GetCurrentFocus(); |
| 412 | |
| 413 | // but if not, we might know where the focus was ourselves |
| 414 | if (!winFocus) |
| 415 | winFocus = m_winLastFocused; |
| 416 | |
| 417 | // if still no luck, do it the hard way |
| 418 | if (!winFocus) |
| 419 | winFocus = wxWindow::FindFocus(); |
| 420 | |
| 421 | if ( winFocus ) |
| 422 | { |
| 423 | #if defined(__WXMSW__) && wxUSE_RADIOBTN |
| 424 | // If we are in a radio button group, start from the first item in the |
| 425 | // group |
| 426 | if ( event.IsFromTab() && wxIsKindOf(winFocus, wxRadioButton ) ) |
| 427 | winFocus = wxGetFirstButtonInGroup((wxRadioButton*)winFocus); |
| 428 | #endif // __WXMSW__ |
| 429 | // ok, we found the focus - now is it our child? |
| 430 | start_node = children.Find( winFocus ); |
| 431 | } |
| 432 | |
| 433 | if ( !start_node && m_winLastFocused ) |
| 434 | { |
| 435 | // window which has focus isn't our child, fall back to the one |
| 436 | // which had the focus the last time |
| 437 | start_node = children.Find( m_winLastFocused ); |
| 438 | } |
| 439 | |
| 440 | // if we still didn't find anything, we should start with the first one |
| 441 | if ( !start_node ) |
| 442 | { |
| 443 | start_node = children.GetFirst(); |
| 444 | } |
| 445 | |
| 446 | // and the first child which we can try setting focus to is the next or |
| 447 | // the previous one |
| 448 | node = forward ? start_node->GetNext() : start_node->GetPrevious(); |
| 449 | } |
| 450 | |
| 451 | // we want to cycle over all elements passing by NULL |
| 452 | for ( ;; ) |
| 453 | { |
| 454 | // don't go into infinite loop |
| 455 | if ( start_node && node && node == start_node ) |
| 456 | break; |
| 457 | |
| 458 | // Have we come to the last or first item on the panel? |
| 459 | if ( !node ) |
| 460 | { |
| 461 | if ( !start_node ) |
| 462 | { |
| 463 | // exit now as otherwise we'd loop forever |
| 464 | break; |
| 465 | } |
| 466 | |
| 467 | if ( !goingDown ) |
| 468 | { |
| 469 | // Check if our (maybe grand) parent is another panel: if this |
| 470 | // is the case, they will know what to do with this navigation |
| 471 | // key and so give them the chance to process it instead of |
| 472 | // looping inside this panel (normally, the focus will go to |
| 473 | // the next/previous item after this panel in the parent |
| 474 | // panel). |
| 475 | wxWindow *focussed_child_of_parent = m_winParent; |
| 476 | while ( parent ) |
| 477 | { |
| 478 | // we don't want to tab into a different dialog or frame |
| 479 | if ( focussed_child_of_parent->IsTopLevel() ) |
| 480 | break; |
| 481 | |
| 482 | event.SetCurrentFocus( focussed_child_of_parent ); |
| 483 | if ( parent->GetEventHandler()->ProcessEvent( event ) ) |
| 484 | return; |
| 485 | |
| 486 | focussed_child_of_parent = parent; |
| 487 | |
| 488 | parent = parent->GetParent(); |
| 489 | } |
| 490 | } |
| 491 | //else: as the focus came from our parent, we definitely don't want |
| 492 | // to send it back to it! |
| 493 | |
| 494 | // no, we are not inside another panel so process this ourself |
| 495 | node = forward ? children.GetFirst() : children.GetLast(); |
| 496 | |
| 497 | continue; |
| 498 | } |
| 499 | |
| 500 | wxWindow *child = node->GetData(); |
| 501 | |
| 502 | // don't TAB to another TLW |
| 503 | if ( child->IsTopLevel() ) |
| 504 | { |
| 505 | node = forward ? node->GetNext() : node->GetPrevious(); |
| 506 | |
| 507 | continue; |
| 508 | } |
| 509 | |
| 510 | #if defined(__WXMSW__) && wxUSE_RADIOBTN |
| 511 | if ( event.IsFromTab() ) |
| 512 | { |
| 513 | if ( wxIsKindOf(child, wxRadioButton) ) |
| 514 | { |
| 515 | // only radio buttons with either wxRB_GROUP or wxRB_SINGLE |
| 516 | // can be tabbed to |
| 517 | if ( child->HasFlag(wxRB_GROUP) ) |
| 518 | { |
| 519 | // need to tab into the active button within a group |
| 520 | wxRadioButton *rb = wxGetSelectedButtonInGroup((wxRadioButton*)child); |
| 521 | if ( rb ) |
| 522 | child = rb; |
| 523 | } |
| 524 | else if ( !child->HasFlag(wxRB_SINGLE) ) |
| 525 | { |
| 526 | node = forward ? node->GetNext() : node->GetPrevious(); |
| 527 | continue; |
| 528 | } |
| 529 | } |
| 530 | } |
| 531 | else if ( m_winLastFocused && |
| 532 | wxIsKindOf(m_winLastFocused, wxRadioButton) && |
| 533 | !m_winLastFocused->HasFlag(wxRB_SINGLE) ) |
| 534 | { |
| 535 | wxRadioButton * const |
| 536 | lastBtn = static_cast<wxRadioButton *>(m_winLastFocused); |
| 537 | |
| 538 | // cursor keys don't navigate out of a radio button group so |
| 539 | // find the correct radio button to focus |
| 540 | if ( forward ) |
| 541 | { |
| 542 | child = wxGetNextButtonInGroup(lastBtn); |
| 543 | if ( !child ) |
| 544 | { |
| 545 | // no next button in group, set it to the first button |
| 546 | child = wxGetFirstButtonInGroup(lastBtn); |
| 547 | } |
| 548 | } |
| 549 | else |
| 550 | { |
| 551 | child = wxGetPreviousButtonInGroup(lastBtn); |
| 552 | if ( !child ) |
| 553 | { |
| 554 | // no previous button in group, set it to the last button |
| 555 | child = wxGetLastButtonInGroup(lastBtn); |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | if ( child == m_winLastFocused ) |
| 560 | { |
| 561 | // must be a group consisting of only one button therefore |
| 562 | // no need to send a navigation event |
| 563 | event.Skip(false); |
| 564 | return; |
| 565 | } |
| 566 | } |
| 567 | #endif // __WXMSW__ |
| 568 | |
| 569 | if ( child->CanAcceptFocusFromKeyboard() ) |
| 570 | { |
| 571 | // if we're setting the focus to a child panel we should prevent it |
| 572 | // from giving it to the child which had the focus the last time |
| 573 | // and instead give it to the first/last child depending from which |
| 574 | // direction we're coming |
| 575 | event.SetEventObject(m_winParent); |
| 576 | |
| 577 | // disable propagation for this call as otherwise the event might |
| 578 | // bounce back to us. |
| 579 | wxPropagationDisabler disableProp(event); |
| 580 | if ( !child->GetEventHandler()->ProcessEvent(event) ) |
| 581 | { |
| 582 | // set it first in case SetFocusFromKbd() results in focus |
| 583 | // change too |
| 584 | m_winLastFocused = child; |
| 585 | |
| 586 | // everything is simple: just give focus to it |
| 587 | child->SetFocusFromKbd(); |
| 588 | } |
| 589 | //else: the child manages its focus itself |
| 590 | |
| 591 | event.Skip( false ); |
| 592 | |
| 593 | return; |
| 594 | } |
| 595 | |
| 596 | node = forward ? node->GetNext() : node->GetPrevious(); |
| 597 | } |
| 598 | |
| 599 | // we cycled through all of our children and none of them wanted to accept |
| 600 | // focus |
| 601 | event.Skip(); |
| 602 | } |
| 603 | |
| 604 | void wxControlContainer::HandleOnWindowDestroy(wxWindowBase *child) |
| 605 | { |
| 606 | if ( child == m_winLastFocused ) |
| 607 | m_winLastFocused = NULL; |
| 608 | } |
| 609 | |
| 610 | // ---------------------------------------------------------------------------- |
| 611 | // focus handling |
| 612 | // ---------------------------------------------------------------------------- |
| 613 | |
| 614 | void wxControlContainer::HandleOnFocus(wxFocusEvent& event) |
| 615 | { |
| 616 | wxLogTrace(TRACE_FOCUS, wxT("OnFocus on wxPanel 0x%p, name: %s"), |
| 617 | m_winParent->GetHandle(), |
| 618 | m_winParent->GetName().c_str() ); |
| 619 | |
| 620 | DoSetFocus(); |
| 621 | |
| 622 | event.Skip(); |
| 623 | } |
| 624 | |
| 625 | |
| 626 | #else |
| 627 | // wxHAS_NATIVE_TAB_TRAVERSAL |
| 628 | |
| 629 | bool wxControlContainer::SetFocusToChild() |
| 630 | { |
| 631 | return wxSetFocusToChild(m_winParent, NULL); |
| 632 | } |
| 633 | |
| 634 | |
| 635 | #endif // !wxHAS_NATIVE_TAB_TRAVERSAL |
| 636 | |
| 637 | // ---------------------------------------------------------------------------- |
| 638 | // SetFocusToChild(): this function is used by wxPanel but also by wxFrame in |
| 639 | // wxMSW, this is why it is outside of wxControlContainer class |
| 640 | // ---------------------------------------------------------------------------- |
| 641 | |
| 642 | bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused) |
| 643 | { |
| 644 | wxCHECK_MSG( win, false, wxT("wxSetFocusToChild(): invalid window") ); |
| 645 | // wxCHECK_MSG( childLastFocused, false, |
| 646 | // wxT("wxSetFocusToChild(): NULL child poonter") ); |
| 647 | |
| 648 | if ( childLastFocused && *childLastFocused ) |
| 649 | { |
| 650 | // It might happen that the window got reparented |
| 651 | if ( (*childLastFocused)->GetParent() == win ) |
| 652 | { |
| 653 | wxLogTrace(TRACE_FOCUS, |
| 654 | wxT("SetFocusToChild() => last child (0x%p)."), |
| 655 | (*childLastFocused)->GetHandle()); |
| 656 | |
| 657 | // not SetFocusFromKbd(): we're restoring focus back to the old |
| 658 | // window and not setting it as the result of a kbd action |
| 659 | (*childLastFocused)->SetFocus(); |
| 660 | return true; |
| 661 | } |
| 662 | else |
| 663 | { |
| 664 | // it doesn't count as such any more |
| 665 | *childLastFocused = NULL; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | // set the focus to the first child who wants it |
| 670 | wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst(); |
| 671 | while ( node ) |
| 672 | { |
| 673 | wxWindow *child = node->GetData(); |
| 674 | node = node->GetNext(); |
| 675 | |
| 676 | // skip special windows: |
| 677 | if ( !win->IsClientAreaChild(child) ) |
| 678 | continue; |
| 679 | |
| 680 | if ( child->CanAcceptFocusFromKeyboard() && !child->IsTopLevel() ) |
| 681 | { |
| 682 | #if defined(__WXMSW__) && wxUSE_RADIOBTN |
| 683 | // If a radiobutton is the first focusable child, search for the |
| 684 | // selected radiobutton in the same group |
| 685 | wxRadioButton* btn = wxDynamicCast(child, wxRadioButton); |
| 686 | if (btn) |
| 687 | { |
| 688 | wxRadioButton* selected = wxGetSelectedButtonInGroup(btn); |
| 689 | if (selected) |
| 690 | child = selected; |
| 691 | } |
| 692 | #endif // __WXMSW__ |
| 693 | |
| 694 | wxLogTrace(TRACE_FOCUS, |
| 695 | wxT("SetFocusToChild() => first child (0x%p)."), |
| 696 | child->GetHandle()); |
| 697 | |
| 698 | if (childLastFocused) |
| 699 | *childLastFocused = child; |
| 700 | child->SetFocusFromKbd(); |
| 701 | return true; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | return false; |
| 706 | } |
| 707 | |