forked from Floorp-Projects/Floorp
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathnsTextControlFrame.cpp
1483 lines (1238 loc) · 47 KB
/
nsTextControlFrame.cpp
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
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/DebugOnly.h"
#include "nsCOMPtr.h"
#include "nsFontMetrics.h"
#include "nsTextControlFrame.h"
#include "nsIPlaintextEditor.h"
#include "nsCaret.h"
#include "nsGenericHTMLElement.h"
#include "nsIEditor.h"
#include "nsIEditorIMESupport.h"
#include "nsIPhonetic.h"
#include "nsTextFragment.h"
#include "nsIDOMHTMLTextAreaElement.h"
#include "nsNameSpaceManager.h"
#include "nsFormControlFrame.h" //for registering accesskeys
#include "nsIContent.h"
#include "nsPresContext.h"
#include "nsRenderingContext.h"
#include "nsGkAtoms.h"
#include "nsLayoutUtils.h"
#include "nsIDOMElement.h"
#include "nsIDOMHTMLElement.h"
#include "nsIPresShell.h"
#include <algorithm>
#include "nsIDOMNodeList.h" //for selection setting helper func
#include "nsIDOMRange.h" //for selection setting helper func
#include "nsPIDOMWindow.h" //needed for notify selection changed to update the menus ect.
#include "nsIDOMNode.h"
#include "nsIDOMText.h" //for multiline getselection
#include "nsFocusManager.h"
#include "nsTextEditRules.h"
#include "nsPresState.h"
#include "nsContentList.h"
#include "nsAttrValueInlines.h"
#include "mozilla/dom/Selection.h"
#include "nsContentUtils.h"
#include "nsTextNode.h"
#include "nsStyleSet.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/MathAlgorithms.h"
#include "nsFrameSelection.h"
#define DEFAULT_COLUMN_WIDTH 20
using namespace mozilla;
nsIFrame*
NS_NewTextControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTextControlFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTextControlFrame)
NS_QUERYFRAME_HEAD(nsTextControlFrame)
NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
NS_QUERYFRAME_ENTRY(nsITextControlFrame)
NS_QUERYFRAME_ENTRY(nsIStatefulFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
#ifdef ACCESSIBILITY
a11y::AccType
nsTextControlFrame::AccessibleType()
{
return a11y::eHTMLTextFieldType;
}
#endif
#ifdef DEBUG
class EditorInitializerEntryTracker {
public:
explicit EditorInitializerEntryTracker(nsTextControlFrame &frame)
: mFrame(frame)
, mFirstEntry(false)
{
if (!mFrame.mInEditorInitialization) {
mFrame.mInEditorInitialization = true;
mFirstEntry = true;
}
}
~EditorInitializerEntryTracker()
{
if (mFirstEntry) {
mFrame.mInEditorInitialization = false;
}
}
bool EnteredMoreThanOnce() const { return !mFirstEntry; }
private:
nsTextControlFrame &mFrame;
bool mFirstEntry;
};
#endif
nsTextControlFrame::nsTextControlFrame(nsStyleContext* aContext)
: nsContainerFrame(aContext)
, mEditorHasBeenInitialized(false)
, mIsProcessing(false)
#ifdef DEBUG
, mInEditorInitialization(false)
#endif
{
}
nsTextControlFrame::~nsTextControlFrame()
{
}
void
nsTextControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
mScrollEvent.Revoke();
EditorInitializer* initializer = (EditorInitializer*) Properties().Get(TextControlInitializer());
if (initializer) {
initializer->Revoke();
Properties().Delete(TextControlInitializer());
}
// Unbind the text editor state object from the frame. The editor will live
// on, but things like controllers will be released.
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
txtCtrl->UnbindFromFrame(this);
nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
nsContainerFrame::DestroyFrom(aDestructRoot);
}
nsIAtom*
nsTextControlFrame::GetType() const
{
return nsGkAtoms::textInputFrame;
}
nsresult
nsTextControlFrame::CalcIntrinsicSize(nsRenderingContext* aRenderingContext,
WritingMode aWM,
LogicalSize& aIntrinsicSize,
float aFontSizeInflation)
{
// Get leading and the Average/MaxAdvance char width
nscoord lineHeight = 0;
nscoord charWidth = 0;
nscoord charMaxAdvance = 0;
RefPtr<nsFontMetrics> fontMet;
nsresult rv =
nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fontMet),
aFontSizeInflation);
NS_ENSURE_SUCCESS(rv, rv);
lineHeight =
nsHTMLReflowState::CalcLineHeight(GetContent(), StyleContext(),
NS_AUTOHEIGHT, aFontSizeInflation);
charWidth = fontMet->AveCharWidth();
charMaxAdvance = fontMet->MaxAdvance();
// Set the width equal to the width in characters
int32_t cols = GetCols();
aIntrinsicSize.ISize(aWM) = cols * charWidth;
// To better match IE, take the maximum character width(in twips) and remove
// 4 pixels add this on as additional padding(internalPadding). But only do
// this if we think we have a fixed-width font.
if (mozilla::Abs(charWidth - charMaxAdvance) > (unsigned)nsPresContext::CSSPixelsToAppUnits(1)) {
nscoord internalPadding =
std::max(0, charMaxAdvance - nsPresContext::CSSPixelsToAppUnits(4));
nscoord t = nsPresContext::CSSPixelsToAppUnits(1);
// Round to a multiple of t
nscoord rest = internalPadding % t;
if (rest < t - rest) {
internalPadding -= rest;
} else {
internalPadding += t - rest;
}
// Now add the extra padding on (so that small input sizes work well)
aIntrinsicSize.ISize(aWM) += internalPadding;
} else {
// This is to account for the anonymous <br> having a 1 twip width
// in Full Standards mode, see BRFrame::Reflow and bug 228752.
if (PresContext()->CompatibilityMode() == eCompatibility_FullStandards) {
aIntrinsicSize.ISize(aWM) += 1;
}
}
// Increment width with cols * letter-spacing.
{
const nsStyleCoord& lsCoord = StyleText()->mLetterSpacing;
if (eStyleUnit_Coord == lsCoord.GetUnit()) {
nscoord letterSpacing = lsCoord.GetCoordValue();
if (letterSpacing != 0) {
aIntrinsicSize.ISize(aWM) += cols * letterSpacing;
}
}
}
// Set the height equal to total number of rows (times the height of each
// line, of course)
aIntrinsicSize.BSize(aWM) = lineHeight * GetRows();
// Add in the size of the scrollbars for textarea
if (IsTextArea()) {
nsIFrame* first = GetFirstPrincipalChild();
nsIScrollableFrame *scrollableFrame = do_QueryFrame(first);
NS_ASSERTION(scrollableFrame, "Child must be scrollable");
if (scrollableFrame) {
LogicalMargin scrollbarSizes(aWM,
scrollableFrame->GetDesiredScrollbarSizes(PresContext(),
aRenderingContext));
aIntrinsicSize.ISize(aWM) += scrollbarSizes.IStartEnd(aWM);
aIntrinsicSize.BSize(aWM) += scrollbarSizes.BStartEnd(aWM);
}
}
return NS_OK;
}
nsresult
nsTextControlFrame::EnsureEditorInitialized()
{
// This method initializes our editor, if needed.
// This code used to be called from CreateAnonymousContent(), but
// when the editor set the initial string, it would trigger a
// PresShell listener which called FlushPendingNotifications()
// during frame construction. This was causing other form controls
// to display wrong values. Additionally, calling this every time
// a text frame control is instantiated means that we're effectively
// instantiating the editor for all text fields, even if they
// never get used. So, now this method is being called lazily only
// when we actually need an editor.
if (mEditorHasBeenInitialized)
return NS_OK;
nsIDocument* doc = mContent->GetComposedDoc();
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
nsWeakFrame weakFrame(this);
// Flush out content on our document. Have to do this, because script
// blockers don't prevent the sink flushing out content and notifying in the
// process, which can destroy frames.
doc->FlushPendingNotifications(Flush_ContentAndNotify);
NS_ENSURE_TRUE(weakFrame.IsAlive(), NS_ERROR_FAILURE);
// Make sure that editor init doesn't do things that would kill us off
// (especially off the script blockers it'll create for its DOM mutations).
{
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
MOZ_ASSERT(txtCtrl, "Content not a text control element");
// Hide selection changes during the initialization, as webpages should not
// be aware of these initializations
AutoHideSelectionChanges hideSelectionChanges(txtCtrl->GetConstFrameSelection());
nsAutoScriptBlocker scriptBlocker;
// Time to mess with our security context... See comments in GetValue()
// for why this is needed.
mozilla::dom::AutoNoJSAPI nojsapi;
// Make sure that we try to focus the content even if the method fails
class EnsureSetFocus {
public:
explicit EnsureSetFocus(nsTextControlFrame* aFrame)
: mFrame(aFrame) {}
~EnsureSetFocus() {
if (nsContentUtils::IsFocusedContent(mFrame->GetContent()))
mFrame->SetFocus(true, false);
}
private:
nsTextControlFrame *mFrame;
};
EnsureSetFocus makeSureSetFocusHappens(this);
#ifdef DEBUG
// Make sure we are not being called again until we're finished.
// If reentrancy happens, just pretend that we don't have an editor.
const EditorInitializerEntryTracker tracker(*this);
NS_ASSERTION(!tracker.EnteredMoreThanOnce(),
"EnsureEditorInitialized has been called while a previous call was in progress");
#endif
// Create an editor for the frame, if one doesn't already exist
nsresult rv = txtCtrl->CreateEditor();
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_STATE(weakFrame.IsAlive());
// Set mEditorHasBeenInitialized so that subsequent calls will use the
// editor.
mEditorHasBeenInitialized = true;
// Set the selection to the beginning of the text field.
if (weakFrame.IsAlive()) {
SetSelectionEndPoints(0, 0);
}
}
NS_ENSURE_STATE(weakFrame.IsAlive());
return NS_OK;
}
nsresult
nsTextControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
{
NS_ASSERTION(mContent, "We should have a content!");
mState |= NS_FRAME_INDEPENDENT_SELECTION;
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
// Bind the frame to its text control
nsresult rv = txtCtrl->BindToFrame(this);
NS_ENSURE_SUCCESS(rv, rv);
nsIContent* rootNode = txtCtrl->GetRootEditorNode();
NS_ENSURE_TRUE(rootNode, NS_ERROR_OUT_OF_MEMORY);
if (!aElements.AppendElement(rootNode))
return NS_ERROR_OUT_OF_MEMORY;
// Do we need a placeholder node?
nsAutoString placeholderTxt;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::placeholder,
placeholderTxt);
nsContentUtils::RemoveNewlines(placeholderTxt);
mUsePlaceholder = !placeholderTxt.IsEmpty();
// Create the placeholder anonymous content if needed.
if (mUsePlaceholder) {
nsIContent* placeholderNode = txtCtrl->CreatePlaceholderNode();
NS_ENSURE_TRUE(placeholderNode, NS_ERROR_OUT_OF_MEMORY);
// Associate ::-moz-placeholder pseudo-element with the placeholder node.
nsCSSPseudoElements::Type pseudoType =
nsCSSPseudoElements::ePseudo_mozPlaceholder;
RefPtr<nsStyleContext> placeholderStyleContext =
PresContext()->StyleSet()->ResolvePseudoElementStyle(
mContent->AsElement(), pseudoType, StyleContext(),
placeholderNode->AsElement());
if (!aElements.AppendElement(ContentInfo(placeholderNode,
placeholderStyleContext))) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (!IsSingleLineTextControl()) {
// For textareas, UpdateValueDisplay doesn't initialize the visibility
// status of the placeholder because it returns early, so we have to
// do that manually here.
txtCtrl->UpdatePlaceholderVisibility(true);
}
}
rv = UpdateValueDisplay(false);
NS_ENSURE_SUCCESS(rv, rv);
// textareas are eagerly initialized
bool initEagerly = !IsSingleLineTextControl();
if (!initEagerly) {
// Also, input elements which have a cached selection should get eager
// editor initialization.
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
initEagerly = txtCtrl->HasCachedSelection();
}
if (!initEagerly) {
nsCOMPtr<nsIDOMHTMLElement> element = do_QueryInterface(txtCtrl);
if (element) {
// so are input text controls with spellcheck=true
element->GetSpellcheck(&initEagerly);
}
}
if (initEagerly) {
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
"Someone forgot a script blocker?");
EditorInitializer* initializer = (EditorInitializer*) Properties().Get(TextControlInitializer());
if (initializer) {
initializer->Revoke();
}
initializer = new EditorInitializer(this);
Properties().Set(TextControlInitializer(),initializer);
if (!nsContentUtils::AddScriptRunner(initializer)) {
initializer->Revoke(); // paranoia
Properties().Delete(TextControlInitializer());
delete initializer;
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_OK;
}
void
nsTextControlFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
uint32_t aFilter)
{
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
nsIContent* root = txtCtrl->GetRootEditorNode();
if (root) {
aElements.AppendElement(root);
}
nsIContent* placeholder = txtCtrl->GetPlaceholderNode();
if (placeholder && !(aFilter & nsIContent::eSkipPlaceholderContent))
aElements.AppendElement(placeholder);
}
nscoord
nsTextControlFrame::GetPrefISize(nsRenderingContext* aRenderingContext)
{
DebugOnly<nscoord> result = 0;
DISPLAY_PREF_WIDTH(this, result);
float inflation = nsLayoutUtils::FontSizeInflationFor(this);
WritingMode wm = GetWritingMode();
LogicalSize autoSize(wm);
CalcIntrinsicSize(aRenderingContext, wm, autoSize, inflation);
return autoSize.ISize(wm);
}
nscoord
nsTextControlFrame::GetMinISize(nsRenderingContext* aRenderingContext)
{
// Our min width is just our preferred width if we have auto width.
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
result = GetPrefISize(aRenderingContext);
return result;
}
LogicalSize
nsTextControlFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
bool aShrinkWrap)
{
float inflation = nsLayoutUtils::FontSizeInflationFor(this);
LogicalSize autoSize(aWM);
nsresult rv = CalcIntrinsicSize(aRenderingContext, aWM, autoSize, inflation);
if (NS_FAILED(rv)) {
// What now?
autoSize.SizeTo(aWM, 0, 0);
}
#ifdef DEBUG
// Note: Ancestor ComputeAutoSize only computes a width if we're auto-width
else {
const nsStyleCoord& inlineStyleCoord =
aWM.IsVertical() ? StylePosition()->mHeight : StylePosition()->mWidth;
if (inlineStyleCoord.GetUnit() == eStyleUnit_Auto) {
LogicalSize ancestorAutoSize =
nsContainerFrame::ComputeAutoSize(aRenderingContext, aWM,
aCBSize, aAvailableISize,
aMargin, aBorder,
aPadding, aShrinkWrap);
// Disabled when there's inflation; see comment in GetPrefSize.
MOZ_ASSERT(inflation != 1.0f ||
ancestorAutoSize.ISize(aWM) == autoSize.ISize(aWM),
"Incorrect size computed by ComputeAutoSize?");
}
}
#endif
return autoSize;
}
void
nsTextControlFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTextControlFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
// make sure that the form registers itself on the initial/first reflow
if (mState & NS_FRAME_FIRST_REFLOW) {
nsFormControlFrame::RegUnRegAccessKey(this, true);
}
// set values of reflow's out parameters
WritingMode wm = aReflowState.GetWritingMode();
LogicalSize
finalSize(wm,
aReflowState.ComputedISize() +
aReflowState.ComputedLogicalBorderPadding().IStartEnd(wm),
aReflowState.ComputedBSize() +
aReflowState.ComputedLogicalBorderPadding().BStartEnd(wm));
aDesiredSize.SetSize(wm, finalSize);
// computation of the ascent wrt the input height
nscoord lineHeight = aReflowState.ComputedBSize();
float inflation = nsLayoutUtils::FontSizeInflationFor(this);
if (!IsSingleLineTextControl()) {
lineHeight = nsHTMLReflowState::CalcLineHeight(GetContent(), StyleContext(),
NS_AUTOHEIGHT, inflation);
}
RefPtr<nsFontMetrics> fontMet;
nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fontMet),
inflation);
// now adjust for our borders and padding
aDesiredSize.SetBlockStartAscent(
nsLayoutUtils::GetCenteredFontBaseline(fontMet, lineHeight,
wm.IsLineInverted()) +
aReflowState.ComputedLogicalBorderPadding().BStart(wm));
// overflow handling
aDesiredSize.SetOverflowAreasToDesiredBounds();
// perform reflow on all kids
nsIFrame* kid = mFrames.FirstChild();
while (kid) {
ReflowTextControlChild(kid, aPresContext, aReflowState, aStatus, aDesiredSize);
kid = kid->GetNextSibling();
}
// take into account css properties that affect overflow handling
FinishAndStoreOverflow(&aDesiredSize);
aStatus = NS_FRAME_COMPLETE;
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
}
void
nsTextControlFrame::ReflowTextControlChild(nsIFrame* aKid,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus,
nsHTMLReflowMetrics& aParentDesiredSize)
{
// compute available size and frame offsets for child
WritingMode wm = aKid->GetWritingMode();
LogicalSize availSize = aReflowState.ComputedSizeWithPadding(wm);
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
nsHTMLReflowState kidReflowState(aPresContext, aReflowState,
aKid, availSize, nullptr,
nsHTMLReflowState::CALLER_WILL_INIT);
// Override padding with our computed padding in case we got it from theming or percentage
kidReflowState.Init(aPresContext, nullptr, nullptr, &aReflowState.ComputedPhysicalPadding());
// Set computed width and computed height for the child
kidReflowState.SetComputedWidth(aReflowState.ComputedWidth());
kidReflowState.SetComputedHeight(aReflowState.ComputedHeight());
// Offset the frame by the size of the parent's border
nscoord xOffset = aReflowState.ComputedPhysicalBorderPadding().left -
aReflowState.ComputedPhysicalPadding().left;
nscoord yOffset = aReflowState.ComputedPhysicalBorderPadding().top -
aReflowState.ComputedPhysicalPadding().top;
// reflow the child
nsHTMLReflowMetrics desiredSize(aReflowState);
ReflowChild(aKid, aPresContext, desiredSize, kidReflowState,
xOffset, yOffset, 0, aStatus);
// place the child
FinishReflowChild(aKid, aPresContext, desiredSize,
&kidReflowState, xOffset, yOffset, 0);
// consider the overflow
aParentDesiredSize.mOverflowAreas.UnionWith(desiredSize.mOverflowAreas);
}
nsSize
nsTextControlFrame::GetMinSize(nsBoxLayoutState& aState)
{
// XXXbz why? Why not the nsBoxFrame sizes?
return nsBox::GetMinSize(aState);
}
bool
nsTextControlFrame::IsCollapsed()
{
// We're never collapsed in the box sense.
return false;
}
bool
nsTextControlFrame::IsLeaf() const
{
return true;
}
NS_IMETHODIMP
nsTextControlFrame::ScrollOnFocusEvent::Run()
{
if (mFrame) {
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(mFrame->GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
nsISelectionController* selCon = txtCtrl->GetSelectionController();
if (selCon) {
mFrame->mScrollEvent.Forget();
selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
nsISelectionController::SELECTION_FOCUS_REGION,
nsISelectionController::SCROLL_SYNCHRONOUS);
}
}
return NS_OK;
}
//IMPLEMENTING NS_IFORMCONTROLFRAME
void nsTextControlFrame::SetFocus(bool aOn, bool aRepaint)
{
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
// Revoke the previous scroll event if one exists
mScrollEvent.Revoke();
// If 'dom.placeholeder.show_on_focus' preference is 'false', focusing or
// blurring the frame can have an impact on the placeholder visibility.
if (mUsePlaceholder) {
txtCtrl->UpdatePlaceholderVisibility(true);
}
if (!aOn) {
return;
}
nsISelectionController* selCon = txtCtrl->GetSelectionController();
if (!selCon)
return;
nsCOMPtr<nsISelection> ourSel;
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL,
getter_AddRefs(ourSel));
if (!ourSel) return;
nsIPresShell* presShell = PresContext()->GetPresShell();
RefPtr<nsCaret> caret = presShell->GetCaret();
if (!caret) return;
// Scroll the current selection into view
nsISelection *caretSelection = caret->GetSelection();
const bool isFocusedRightNow = ourSel == caretSelection;
if (!isFocusedRightNow) {
// Don't scroll the current selection if we've been focused using the mouse.
uint32_t lastFocusMethod = 0;
nsIDocument* doc = GetContent()->GetComposedDoc();
if (doc) {
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm) {
fm->GetLastFocusMethod(doc->GetWindow(), &lastFocusMethod);
}
}
if (!(lastFocusMethod & nsIFocusManager::FLAG_BYMOUSE)) {
RefPtr<ScrollOnFocusEvent> event = new ScrollOnFocusEvent(this);
nsresult rv = NS_DispatchToCurrentThread(event);
if (NS_SUCCEEDED(rv)) {
mScrollEvent = event;
}
}
}
// tell the caret to use our selection
caret->SetSelection(ourSel);
// mutual-exclusion: the selection is either controlled by the
// document or by the text input/area. Clear any selection in the
// document since the focus is now on our independent selection.
nsCOMPtr<nsISelectionController> selcon = do_QueryInterface(presShell);
nsCOMPtr<nsISelection> docSel;
selcon->GetSelection(nsISelectionController::SELECTION_NORMAL,
getter_AddRefs(docSel));
if (!docSel) return;
bool isCollapsed = false;
docSel->GetIsCollapsed(&isCollapsed);
if (!isCollapsed)
docSel->RemoveAllRanges();
}
nsresult nsTextControlFrame::SetFormProperty(nsIAtom* aName, const nsAString& aValue)
{
if (!mIsProcessing)//some kind of lock.
{
mIsProcessing = true;
if (nsGkAtoms::select == aName)
{
// Select all the text.
//
// XXX: This is lame, we can't call editor's SelectAll method
// because that triggers AutoCopies in unix builds.
// Instead, we have to call our own homegrown version
// of select all which merely builds a range that selects
// all of the content and adds that to the selection.
nsWeakFrame weakThis = this;
SelectAllOrCollapseToEndOfText(true); // NOTE: can destroy the world
if (!weakThis.IsAlive()) {
return NS_OK;
}
}
mIsProcessing = false;
}
return NS_OK;
}
NS_IMETHODIMP
nsTextControlFrame::GetEditor(nsIEditor **aEditor)
{
NS_ENSURE_ARG_POINTER(aEditor);
nsresult rv = EnsureEditorInitialized();
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
*aEditor = txtCtrl->GetTextEditor();
NS_IF_ADDREF(*aEditor);
return NS_OK;
}
nsresult
nsTextControlFrame::SetSelectionInternal(nsIDOMNode *aStartNode,
int32_t aStartOffset,
nsIDOMNode *aEndNode,
int32_t aEndOffset,
nsITextControlFrame::SelectionDirection aDirection)
{
// Create a new range to represent the new selection.
// Note that we use a new range to avoid having to do
// isIncreasing checks to avoid possible errors.
RefPtr<nsRange> range = new nsRange(mContent);
nsresult rv = range->SetStart(aStartNode, aStartOffset);
NS_ENSURE_SUCCESS(rv, rv);
rv = range->SetEnd(aEndNode, aEndOffset);
NS_ENSURE_SUCCESS(rv, rv);
// Get the selection, clear it and add the new range to it!
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
nsISelectionController* selCon = txtCtrl->GetSelectionController();
NS_ENSURE_TRUE(selCon, NS_ERROR_FAILURE);
nsCOMPtr<nsISelection> selection;
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
nsCOMPtr<nsISelectionPrivate> selPriv = do_QueryInterface(selection, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsDirection direction;
if (aDirection == eNone) {
// Preserve the direction
direction = selPriv->GetSelectionDirection();
} else {
direction = (aDirection == eBackward) ? eDirPrevious : eDirNext;
}
rv = selection->RemoveAllRanges();
NS_ENSURE_SUCCESS(rv, rv);
rv = selection->AddRange(range); // NOTE: can destroy the world
NS_ENSURE_SUCCESS(rv, rv);
selPriv->SetSelectionDirection(direction);
return rv;
}
nsresult
nsTextControlFrame::ScrollSelectionIntoView()
{
nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
NS_ASSERTION(txtCtrl, "Content not a text control element");
nsISelectionController* selCon = txtCtrl->GetSelectionController();
if (selCon) {
// Scroll the selection into view (see bug 231389).
return selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
nsISelectionController::SELECTION_FOCUS_REGION,
nsISelectionController::SCROLL_FIRST_ANCESTOR_ONLY);
}
return NS_ERROR_FAILURE;
}
mozilla::dom::Element*
nsTextControlFrame::GetRootNodeAndInitializeEditor()
{
nsCOMPtr<nsIDOMElement> root;
GetRootNodeAndInitializeEditor(getter_AddRefs(root));
nsCOMPtr<mozilla::dom::Element> rootElem = do_QueryInterface(root);
return rootElem;
}
nsresult
nsTextControlFrame::GetRootNodeAndInitializeEditor(nsIDOMElement **aRootElement)
{
NS_ENSURE_ARG_POINTER(aRootElement);
nsCOMPtr<nsIEditor> editor;
GetEditor(getter_AddRefs(editor));
if (!editor)
return NS_OK;
return editor->GetRootElement(aRootElement);
}
nsresult
nsTextControlFrame::SelectAllOrCollapseToEndOfText(bool aSelect)
{
nsCOMPtr<nsIDOMElement> rootElement;
nsresult rv = GetRootNodeAndInitializeEditor(getter_AddRefs(rootElement));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIContent> rootContent = do_QueryInterface(rootElement);
nsCOMPtr<nsIDOMNode> rootNode(do_QueryInterface(rootElement));
NS_ENSURE_TRUE(rootNode && rootContent, NS_ERROR_FAILURE);
int32_t numChildren = rootContent->GetChildCount();
if (numChildren > 0) {
// We never want to place the selection after the last
// br under the root node!
nsIContent *child = rootContent->GetChildAt(numChildren - 1);
if (child) {
if (child->IsHTMLElement(nsGkAtoms::br))
--numChildren;
}
if (!aSelect && numChildren) {
child = rootContent->GetChildAt(numChildren - 1);
if (child && child->IsNodeOfType(nsINode::eTEXT)) {
rootNode = do_QueryInterface(child);
const nsTextFragment* fragment = child->GetText();
numChildren = fragment ? fragment->GetLength() : 0;
}
}
}
rv = SetSelectionInternal(rootNode, aSelect ? 0 : numChildren,
rootNode, numChildren);
NS_ENSURE_SUCCESS(rv, rv);
return ScrollSelectionIntoView();
}
nsresult
nsTextControlFrame::SetSelectionEndPoints(int32_t aSelStart, int32_t aSelEnd,
nsITextControlFrame::SelectionDirection aDirection)
{
NS_ASSERTION(aSelStart <= aSelEnd, "Invalid selection offsets!");
if (aSelStart > aSelEnd)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> startNode, endNode;
int32_t startOffset, endOffset;
// Calculate the selection start point.
nsresult rv = OffsetToDOMPoint(aSelStart, getter_AddRefs(startNode), &startOffset);
NS_ENSURE_SUCCESS(rv, rv);
if (aSelStart == aSelEnd) {
// Collapsed selection, so start and end are the same!
endNode = startNode;
endOffset = startOffset;
}
else {
// Selection isn't collapsed so we have to calculate
// the end point too.
rv = OffsetToDOMPoint(aSelEnd, getter_AddRefs(endNode), &endOffset);
NS_ENSURE_SUCCESS(rv, rv);
}
return SetSelectionInternal(startNode, startOffset, endNode, endOffset, aDirection);
}
NS_IMETHODIMP
nsTextControlFrame::SetSelectionRange(int32_t aSelStart, int32_t aSelEnd,
nsITextControlFrame::SelectionDirection aDirection)
{
nsresult rv = EnsureEditorInitialized();
NS_ENSURE_SUCCESS(rv, rv);
if (aSelStart > aSelEnd) {
// Simulate what we'd see SetSelectionStart() was called, followed
// by a SetSelectionEnd().
aSelStart = aSelEnd;
}
return SetSelectionEndPoints(aSelStart, aSelEnd, aDirection);
}
NS_IMETHODIMP
nsTextControlFrame::SetSelectionStart(int32_t aSelectionStart)
{
nsresult rv = EnsureEditorInitialized();
NS_ENSURE_SUCCESS(rv, rv);
int32_t selStart = 0, selEnd = 0;
rv = GetSelectionRange(&selStart, &selEnd);
NS_ENSURE_SUCCESS(rv, rv);
if (aSelectionStart > selEnd) {
// Collapse to the new start point.
selEnd = aSelectionStart;
}
selStart = aSelectionStart;
return SetSelectionEndPoints(selStart, selEnd);
}
NS_IMETHODIMP
nsTextControlFrame::SetSelectionEnd(int32_t aSelectionEnd)
{
nsresult rv = EnsureEditorInitialized();
NS_ENSURE_SUCCESS(rv, rv);
int32_t selStart = 0, selEnd = 0;
rv = GetSelectionRange(&selStart, &selEnd);
NS_ENSURE_SUCCESS(rv, rv);
if (aSelectionEnd < selStart) {
// Collapse to the new end point.
selStart = aSelectionEnd;
}
selEnd = aSelectionEnd;
return SetSelectionEndPoints(selStart, selEnd);
}
nsresult
nsTextControlFrame::OffsetToDOMPoint(int32_t aOffset,
nsIDOMNode** aResult,
int32_t* aPosition)
{
NS_ENSURE_ARG_POINTER(aResult && aPosition);
*aResult = nullptr;
*aPosition = 0;
nsCOMPtr<nsIDOMElement> rootElement;
nsresult rv = GetRootNodeAndInitializeEditor(getter_AddRefs(rootElement));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> rootNode(do_QueryInterface(rootElement));
NS_ENSURE_TRUE(rootNode, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMNodeList> nodeList;
rv = rootNode->GetChildNodes(getter_AddRefs(nodeList));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(nodeList, NS_ERROR_FAILURE);
uint32_t length = 0;
rv = nodeList->GetLength(&length);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(length <= 2, "We should have one text node and one mozBR at most");
nsCOMPtr<nsIDOMNode> firstNode;
rv = nodeList->Item(0, getter_AddRefs(firstNode));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(firstNode);
if (length == 0 || aOffset < 0) {
NS_IF_ADDREF(*aResult = rootNode);
*aPosition = 0;