summaryrefslogtreecommitdiff
path: root/indra/llui/lluictrl.cpp
blob: 9d97312ab0c84cab48a723271bb51272d2885480 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
/** 
 * @file lluictrl.cpp
 * @author James Cook, Richard Nelson, Tom Yedwab
 * @brief Abstract base class for UI controls
 *
 * $LicenseInfo:firstyear=2001&license=viewergpl$
 * 
 * Copyright (c) 2001-2009, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

//#include "llviewerprecompiledheaders.h"
#include "linden_common.h"
#include "lluictrl.h"
#include "llfocusmgr.h"
#include "llpanel.h"

static LLRegisterWidget<LLUICtrl> r("ui_ctrl");

LLFocusableElement::LLFocusableElement()
:	mFocusLostCallback(NULL),
	mFocusReceivedCallback(NULL),
	mFocusChangedCallback(NULL),
	mFocusCallbackUserData(NULL)
{
}

//virtual
LLFocusableElement::~LLFocusableElement()
{
}

void LLFocusableElement::onFocusReceived()
{
	if( mFocusReceivedCallback )
	{
		mFocusReceivedCallback( this, mFocusCallbackUserData );
	}
	if( mFocusChangedCallback )
	{
		mFocusChangedCallback( this, mFocusCallbackUserData );
	}
}

void LLFocusableElement::onFocusLost()
{
	if( mFocusLostCallback )
	{
		mFocusLostCallback( this, mFocusCallbackUserData );
	}

	if( mFocusChangedCallback )
	{
		mFocusChangedCallback( this, mFocusCallbackUserData );
	}
}

BOOL LLFocusableElement::hasFocus() const
{
	return FALSE;
}

void LLFocusableElement::setFocus(BOOL b)
{
}



LLUICtrl::LLUICtrl() :
	mCommitCallback(NULL),
	mLostTopCallback(NULL),
	mValidateCallback(NULL),
	mCallbackUserData(NULL),
	mTentative(FALSE),
	mTabStop(TRUE),
	mIsChrome(FALSE)
{
}

LLUICtrl::LLUICtrl(const std::string& name, const LLRect& rect, BOOL mouse_opaque,
	void (*on_commit_callback)(LLUICtrl*, void*),
	void* callback_userdata,
	U32 reshape)
:	// can't make this automatically follow top and left, breaks lots
	// of buttons in the UI. JC 7/20/2002
	LLView( name, rect, mouse_opaque, reshape ),
	mCommitCallback( on_commit_callback) ,
	mLostTopCallback( NULL ),
	mValidateCallback( NULL ),
	mCallbackUserData( callback_userdata ),
	mTentative( FALSE ),
	mTabStop( TRUE ),
	mIsChrome(FALSE)
{
}

LLUICtrl::~LLUICtrl()
{
	gFocusMgr.releaseFocusIfNeeded( this ); // calls onCommit()

	if( gFocusMgr.getTopCtrl() == this )
	{
		llwarns << "UI Control holding top ctrl deleted: " << getName() << ".  Top view removed." << llendl;
		gFocusMgr.removeTopCtrlWithoutCallback( this );
	}
}

void LLUICtrl::onCommit()
{
	if( mCommitCallback )
	{
		mCommitCallback( this, mCallbackUserData );
	}
}

//virtual
BOOL LLUICtrl::isCtrl() const
{
	return TRUE;
}

//virtual
LLSD LLUICtrl::getValue() const
{
	return LLSD();
}

// virtual
BOOL LLUICtrl::setTextArg( const std::string& key, const LLStringExplicit& text ) 
{ 
	return FALSE; 
}

// virtual
BOOL LLUICtrl::setLabelArg( const std::string& key, const LLStringExplicit& text ) 
{ 
	return FALSE; 
}

// virtual
LLCtrlSelectionInterface* LLUICtrl::getSelectionInterface()	
{ 
	return NULL; 
}

// virtual
LLCtrlListInterface* LLUICtrl::getListInterface()				
{ 
	return NULL; 
}

// virtual
LLCtrlScrollInterface* LLUICtrl::getScrollInterface()			
{ 
	return NULL; 
}

BOOL LLUICtrl::hasFocus() const
{
	return (gFocusMgr.childHasKeyboardFocus(this));
}

void LLUICtrl::setFocus(BOOL b)
{
	// focus NEVER goes to ui ctrls that are disabled!
	if (!getEnabled())
	{
		return;
	}
	if( b )
	{
		if (!hasFocus())
		{
			gFocusMgr.setKeyboardFocus( this );
		}
	}
	else
	{
		if( gFocusMgr.childHasKeyboardFocus(this))
		{
			gFocusMgr.setKeyboardFocus( NULL );
		}
	}
}

void LLUICtrl::onFocusReceived()
{
	// trigger callbacks
	LLFocusableElement::onFocusReceived();

	// find first view in hierarchy above new focus that is a LLUICtrl
	LLView* viewp = getParent();
	LLUICtrl* last_focus = gFocusMgr.getLastKeyboardFocus();

	while (viewp && !viewp->isCtrl()) 
	{
		viewp = viewp->getParent();
	}

	// and if it has newly gained focus, call onFocusReceived()
	LLUICtrl* ctrlp = static_cast<LLUICtrl*>(viewp);
	if (ctrlp && (!last_focus || !last_focus->hasAncestor(ctrlp)))
	{
		ctrlp->onFocusReceived();
	}
}

void LLUICtrl::onFocusLost()
{
	// trigger callbacks
	LLFocusableElement::onFocusLost();

	// find first view in hierarchy above old focus that is a LLUICtrl
	LLView* viewp = getParent();
	while (viewp && !viewp->isCtrl()) 
	{
		viewp = viewp->getParent();
	}

	// and if it has just lost focus, call onFocusReceived()
	LLUICtrl* ctrlp = static_cast<LLUICtrl*>(viewp);
	// hasFocus() includes any descendants
	if (ctrlp && !ctrlp->hasFocus())
	{
		ctrlp->onFocusLost();
	}
}

void LLUICtrl::onLostTop()
{
	if (mLostTopCallback)
	{
		mLostTopCallback(this, mCallbackUserData);
	}
}


// virtual
void LLUICtrl::setTabStop( BOOL b )	
{ 
	mTabStop = b;
}

// virtual
BOOL LLUICtrl::hasTabStop() const		
{ 
	return mTabStop;
}

// virtual
BOOL LLUICtrl::acceptsTextInput() const
{ 
	return FALSE; 
}

//virtual
BOOL LLUICtrl::isDirty() const
{
	return FALSE;
};

//virtual
void LLUICtrl::resetDirty()
{
}

// virtual
void LLUICtrl::onTabInto()				
{
}

// virtual
void LLUICtrl::clear()					
{
}

// virtual
void LLUICtrl::setIsChrome(BOOL is_chrome)
{
	mIsChrome = is_chrome; 
}

// virtual
BOOL LLUICtrl::getIsChrome() const
{ 

	LLView* parent_ctrl = getParent();
	while(parent_ctrl)
	{
		if(parent_ctrl->isCtrl())
		{
			break;	
		}
		parent_ctrl = parent_ctrl->getParent();
	}
	
	if(parent_ctrl)
	{
		return mIsChrome || ((LLUICtrl*)parent_ctrl)->getIsChrome();
	}
	else
	{
		return mIsChrome ; 
	}
}

// this comparator uses the crazy disambiguating logic of LLCompareByTabOrder,
// but to switch up the order so that children that have the default tab group come first
// and those that are prior to the default tab group come last
class CompareByDefaultTabGroup: public LLCompareByTabOrder
{
public:
	CompareByDefaultTabGroup(LLView::child_tab_order_t order, S32 default_tab_group):
			LLCompareByTabOrder(order),
			mDefaultTabGroup(default_tab_group) {}
private:
	/*virtual*/ bool compareTabOrders(const LLView::tab_order_t & a, const LLView::tab_order_t & b) const
	{
		S32 ag = a.first; // tab group for a
		S32 bg = b.first; // tab group for b
		// these two ifs have the effect of moving elements prior to the default tab group to the end of the list 
		// (still sorted relative to each other, though)
		if(ag < mDefaultTabGroup && bg >= mDefaultTabGroup) return false;
		if(bg < mDefaultTabGroup && ag >= mDefaultTabGroup) return true;
		return a < b;  // sort correctly if they're both on the same side of the default tab group
	}
	S32 mDefaultTabGroup;
};


// Sorter for plugging into the query.
// I'd have defined it local to the one method that uses it but that broke the VS 05 compiler. -MG
class LLUICtrl::DefaultTabGroupFirstSorter : public LLQuerySorter, public LLSingleton<DefaultTabGroupFirstSorter>
{
public:
	/*virtual*/ void operator() (LLView * parent, viewList_t &children) const
	{
		children.sort(CompareByDefaultTabGroup(parent->getCtrlOrder(), parent->getDefaultTabGroup()));
	}
};

BOOL LLUICtrl::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
{
	// try to select default tab group child
	LLCtrlQuery query = getTabOrderQuery();
	// sort things such that the default tab group is at the front
	query.setSorter(DefaultTabGroupFirstSorter::getInstance());
	child_list_t result = query(this);
	if(result.size() > 0)
	{
		LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.front());
		if(!ctrl->hasFocus())
		{
			ctrl->setFocus(TRUE);
			ctrl->onTabInto();  
			if(focus_flash)
			{
				gFocusMgr.triggerFocusFlash();
			}
		}
		return TRUE;
	}	
	// search for text field first
	if(prefer_text_fields)
	{
		LLCtrlQuery query = getTabOrderQuery();
		query.addPreFilter(LLUICtrl::LLTextInputFilter::getInstance());
		child_list_t result = query(this);
		if(result.size() > 0)
		{
			LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.front());
			if(!ctrl->hasFocus())
			{
				ctrl->setFocus(TRUE);
				ctrl->onTabInto();  
				gFocusMgr.triggerFocusFlash();
			}
			return TRUE;
		}
	}
	// no text field found, or we don't care about text fields
	result = getTabOrderQuery().run(this);
	if(result.size() > 0)
	{
		LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.front());
		if(!ctrl->hasFocus())
		{
			ctrl->setFocus(TRUE);
			ctrl->onTabInto();  
			gFocusMgr.triggerFocusFlash();
		}
		return TRUE;
	}	
	return FALSE;
}

BOOL LLUICtrl::focusLastItem(BOOL prefer_text_fields)
{
	// search for text field first
	if(prefer_text_fields)
	{
		LLCtrlQuery query = getTabOrderQuery();
		query.addPreFilter(LLUICtrl::LLTextInputFilter::getInstance());
		child_list_t result = query(this);
		if(result.size() > 0)
		{
			LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.back());
			if(!ctrl->hasFocus())
			{
				ctrl->setFocus(TRUE);
				ctrl->onTabInto();  
				gFocusMgr.triggerFocusFlash();
			}
			return TRUE;
		}
	}
	// no text field found, or we don't care about text fields
	child_list_t result = getTabOrderQuery().run(this);
	if(result.size() > 0)
	{
		LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.back());
		if(!ctrl->hasFocus())
		{
			ctrl->setFocus(TRUE);
			ctrl->onTabInto();  
			gFocusMgr.triggerFocusFlash();
		}
		return TRUE;
	}	
	return FALSE;
}

BOOL LLUICtrl::focusNextItem(BOOL text_fields_only)
{
	// this assumes that this method is called on the focus root.
	LLCtrlQuery query = getTabOrderQuery();
	if(text_fields_only || LLUI::sConfigGroup->getBOOL("TabToTextFieldsOnly"))
	{
		query.addPreFilter(LLUICtrl::LLTextInputFilter::getInstance());
	}
	child_list_t result = query(this);
	return focusNext(result);
}

BOOL LLUICtrl::focusPrevItem(BOOL text_fields_only)
{
	// this assumes that this method is called on the focus root.
	LLCtrlQuery query = getTabOrderQuery();
	if(text_fields_only || LLUI::sConfigGroup->getBOOL("TabToTextFieldsOnly"))
	{
		query.addPreFilter(LLUICtrl::LLTextInputFilter::getInstance());
	}
	child_list_t result = query(this);
	return focusPrev(result);
}

LLUICtrl* LLUICtrl::findRootMostFocusRoot()
{
	LLUICtrl* focus_root = NULL;
	LLUICtrl* next_view = this;
	while(next_view)
	{
		if (next_view->isFocusRoot())
		{
			focus_root = next_view;
		}
		next_view = next_view->getParentUICtrl();
	}

	return focus_root;
}


/*
// Don't let the children handle the tool tip.  Handle it here instead.
BOOL LLUICtrl::handleToolTip(S32 x, S32 y, std::string& msg, LLRect* sticky_rect_screen)
{
	BOOL handled = FALSE;
	if (getVisible() && pointInView( x, y ) ) 
	{
		if( !mToolTipMsg.empty() )
		{
			msg = mToolTipMsg;

			// Convert rect local to screen coordinates
			localPointToScreen( 
				0, 0, 
				&(sticky_rect_screen->mLeft), &(sticky_rect_screen->mBottom) );
			localPointToScreen(
				getRect().getWidth(), getRect().getHeight(),
				&(sticky_rect_screen->mRight), &(sticky_rect_screen->mTop) );

			handled = TRUE;
		}
	}

	if (!handled)
	{
		return LLView::handleToolTip(x, y, msg, sticky_rect_screen);
	}

	return handled;
}*/

void LLUICtrl::initFromXML(LLXMLNodePtr node, LLView* parent)
{
	BOOL has_tab_stop = hasTabStop();
	node->getAttributeBOOL("tab_stop", has_tab_stop);

	setTabStop(has_tab_stop);

	LLView::initFromXML(node, parent);
}

LLXMLNodePtr LLUICtrl::getXML(bool save_children) const
{
	LLXMLNodePtr node = LLView::getXML(save_children);
	node->createChild("tab_stop", TRUE)->setBoolValue(hasTabStop());

	return node;
}

//static 
LLView* LLUICtrl::fromXML(LLXMLNodePtr node, LLView* parent, class LLUICtrlFactory* factory)
{
	LLUICtrl* ctrl = new LLUICtrl();
	ctrl->initFromXML(node, parent);
	return ctrl;
}


// Skip over any parents that are not LLUICtrl's
//  Used in focus logic since only LLUICtrl elements can have focus
LLUICtrl* LLUICtrl::getParentUICtrl() const
{
	LLView* parent = getParent();
	while (parent)
	{
		if (parent->isCtrl())
		{
			return (LLUICtrl*)(parent);
		}
		else
		{
			parent =  parent->getParent();
		}
	}
	return NULL;
}

// virtual
void LLUICtrl::setTentative(BOOL b)									
{ 
	mTentative = b; 
}

// virtual
BOOL LLUICtrl::getTentative() const									
{ 
	return mTentative; 
}

// virtual
void LLUICtrl::setDoubleClickCallback( void (*cb)(void*) )				
{ 
}

// virtual
void LLUICtrl::setColor(const LLColor4& color)							
{ }

// virtual
void LLUICtrl::setMinValue(LLSD min_value)								
{ }

// virtual
void LLUICtrl::setMaxValue(LLSD max_value)								
{ }