fzyzcjy eb2d9de07e
Fix Null check operator used on a null value on TextField with contextMenuBuilder (#128114)
Close #128113 

Fun fact: This is caught by monkey testing I have written (will soon be open sourced as well) that runs on my app!

Without the fix, the test fails as expected:

<details>

```
(base) ➜  flutter git:(feat/text-field-npe) /Volumes/MyExternal/ExternalRefCode/flutter/bin/flutter test test/material/text_field_test.dart --name 'changes from default'
00:06 +0: context menu contextMenuBuilder changes from default to null                                                                
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following _TypeError was thrown building
_OverlayEntryWidget-[LabeledGlobalKey<_OverlayEntryWidgetState>#e3717](state:
_OverlayEntryWidgetState#7666a):
Null check operator used on a null value

When the exception was thrown, this was the stack:
#0      EditableTextState._createSelectionOverlay.<anonymous closure> (package:flutter/src/widgets/editable_text.dart:3331:43)
#1      SelectionOverlay.showToolbar.<anonymous closure> (package:flutter/src/widgets/text_selection.dart:1357:36)
#2      ContextMenuController.show.<anonymous closure> (package:flutter/src/widgets/context_menu_controller.dart:65:54)
#3      _OverlayEntryWidgetState.build (package:flutter/src/widgets/overlay.dart:351:36)
#4      StatefulElement.build (package:flutter/src/widgets/framework.dart:5198:27)
#5      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5086:15)
#6      StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#7      Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#8      StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#9      Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#10     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:6093:32)
#11     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6595:17)
#12     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#13     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#14     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#15     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#16     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#17     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#18     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#19     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#20     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#21     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#22     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#23     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#24     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#25     _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#26     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#27     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#28     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#29     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#30     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#31     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#32     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#33     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#34     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#35     _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#36     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#37     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#38     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#39     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#40     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#41     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#42     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#43     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#44     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#45     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#46     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#47     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#48     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#49     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#50     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#51     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#52     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#53     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#54     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#55     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#56     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#57     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#58     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#59     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#60     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#61     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#62     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#63     _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#64     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#65     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#66     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#67     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#68     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#69     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#70     StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#71     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#72     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#73     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#74     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#75     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#76     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#77     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#78     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#79     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#80     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#81     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#82     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#83     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#84     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#85     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#86     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#87     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#88     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#89     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#90     StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#91     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#92     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#93     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#94     ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#95     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#96     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#97     Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#98     StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#99     Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#100    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#101    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#102    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#103    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#104    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#105    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#106    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#107    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#108    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#109    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#110    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#111    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#112    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#113    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#114    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#115    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#116    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#117    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#118    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#119    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#120    StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#121    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#122    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#123    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#124    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#125    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#126    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#127    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#128    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#129    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#130    StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#131    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#132    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#133    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#134    StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#135    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#136    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#137    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#138    StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#139    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#140    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#141    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#142    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#143    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#144    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#145    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#146    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#147    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#148    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#149    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#150    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#151    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#152    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#153    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#154    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#155    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#156    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#157    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#158    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#159    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#160    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#161    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#162    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#163    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#164    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#165    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#166    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#167    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#168    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#169    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#170    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#171    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#172    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#173    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#174    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#175    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#176    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#177    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#178    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#179    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#180    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#181    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#182    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#183    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#184    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#185    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#186    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#187    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#188    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#189    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#190    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#191    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#192    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#193    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#194    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#195    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#196    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#197    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#198    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#199    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#200    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#201    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#202    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#203    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#204    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#205    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#206    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#207    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#208    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#209    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#210    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#211    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#212    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#213    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#214    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#215    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#216    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#217    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#218    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#219    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#220    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#221    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#222    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#223    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#224    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#225    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#226    StatelessElement.update (package:flutter/src/widgets/framework.dart:5162:5)
#227    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#228    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#229    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#230    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#231    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#232    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#233    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#234    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#235    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#236    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#237    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#238    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#239    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#240    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#241    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#242    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#243    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#244    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#245    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#246    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#247    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#248    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#249    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#250    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#251    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#252    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#253    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#254    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#255    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#256    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#257    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#258    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#259    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#260    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#261    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#262    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#263    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#264    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#265    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#266    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#267    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#268    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#269    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#270    StatefulElement.update (package:flutter/src/widgets/framework.dart:5274:5)
#271    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
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#273    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#274    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
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#277    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6442:14)
#278    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#279    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#280    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#281    ProxyElement.update (package:flutter/src/widgets/framework.dart:5417:5)
#282    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:107:11)
#283    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
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#303    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
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#307    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5251:11)
#308    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
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#314    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#315    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5111:16)
#316    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
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#318    Element.updateChild (package:flutter/src/widgets/framework.dart:3686:15)
#319    RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1253:16)
#320    RenderObjectToWidgetElement.update (package:flutter/src/widgets/binding.dart:1230:5)
#321    RenderObjectToWidgetElement.performRebuild (package:flutter/src/widgets/binding.dart:1244:7)
#322    Element.rebuild (package:flutter/src/widgets/framework.dart:4805:7)
#323    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2780:19)
#324    AutomatedTestWidgetsFlutterBinding.drawFrame (package:flutter_test/src/binding.dart:1396:19)
#325    RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:358:5)
#326    SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1297:15)
#327    SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1227:9)
#328    AutomatedTestWidgetsFlutterBinding.pump.<anonymous closure> (package:flutter_test/src/binding.dart:1246:9)
#331    TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:68:41)
#332    AutomatedTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1232:27)
#333    WidgetTester._pumpWidget (package:flutter_test/src/widget_tester.dart:587:20)
#334    WidgetTester.pumpWidget.<anonymous closure> (package:flutter_test/src/widget_tester.dart:572:14)
#337    TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:68:41)
#338    WidgetTester.pumpWidget (package:flutter_test/src/widget_tester.dart:571:27)
#339    main.<anonymous closure>.<anonymous closure> (file:///Volumes/MyExternal/ExternalRefCode/flutter/packages/flutter/test/material/text_field_test.dart:15687:20)
<asynchronous suspension>
<asynchronous suspension>
(elided 5 frames from dart:async and package:stack_trace)

════════════════════════════════════════════════════════════════════════════════════════════════════
00:06 +0 -1: context menu contextMenuBuilder changes from default to null [E]                                                         
  Test failed. See exception logs above.
  The test description was: contextMenuBuilder changes from default to null
  
To run this test again: /Volumes/MyExternal/ExternalRefCode/flutter/bin/cache/dart-sdk/bin/dart test /Volumes/MyExternal/ExternalRefCode/flutter/packages/flutter/test/material/text_field_test.dart -p vm --plain-name 'context menu contextMenuBuilder changes from default to null'
00:06 +0 -1: Some tests failed.                                                                                                       
(base) ➜  flutter git:(feat/text-field-npe) 

```

</details>
2023-06-06 19:37:57 +00:00
2023-05-05 19:16:55 +00:00
2023-06-02 04:27:17 +00:00
2023-05-22 07:21:07 -07:00
2023-05-03 20:01:34 +00:00

Flutter

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Flutter is Google's SDK for crafting beautiful, fast user experiences for mobile, web, and desktop from a single codebase. Flutter works with existing code, is used by developers and organizations around the world, and is free and open source.

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About Flutter

We think Flutter will help you create beautiful, fast apps, with a productive, extensible and open development model, whether you're targeting iOS or Android, web, Windows, macOS, Linux or embedding it as the UI toolkit for a platform of your choice.

Beautiful user experiences

We want to enable designers to deliver their full creative vision without being forced to water it down due to limitations of the underlying framework. Flutter's layered architecture gives you control over every pixel on the screen and its powerful compositing capabilities let you overlay and animate graphics, video, text, and controls without limitation. Flutter includes a full set of widgets that deliver pixel-perfect experiences whether you're building for iOS (Cupertino) or other platforms (Material), along with support for customizing or creating entirely new visual components.

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Flutter is fast. It's powered by the same hardware-accelerated 2D graphics library that underpins Chrome and Android: Skia. We architected Flutter to support glitch-free, jank-free graphics at the native speed of your device. Flutter code is powered by the world-class Dart platform, which enables compilation to 32-bit and 64-bit ARM machine code for iOS and Android, as well as JavaScript for the web and Intel x64 for desktop devices.

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Flutter works with any development tool (or none at all), and also includes editor plug-ins for both Visual Studio Code and IntelliJ / Android Studio. Flutter provides tens of thousands of packages to speed your development, regardless of your target platform. And accessing other native code is easy, with support for both FFI (on Android, on iOS, on macOS, and on Windows) as well as platform-specific APIs.

Flutter is a fully open-source project, and we welcome contributions. Information on how to get started can be found in our contributor guide.

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