There's no use case for stateful comparators, so they can be just plain
function pointers.
This is used in some hot places like CSS selector matching.
Differential Revision: https://phabricator.services.mozilla.com/D77084
On Windows, `AltGr` modifier state is represented with activating both
`Alt` and `Ctrl` modifiers. I.e., when `AltGr` is pressed, any shortcut
keys whose modifier require `Control` and/or `Alt` because `NativeKey`
needs to consume both flags and set modifier state to only `AltGraph`.
That means that we don't need to dispatch `eKeyPress` event when `AltGr` key
is pressed and the key does not produce a character since we've stopped
dispatching non-printable `keypress` events on web content.
See the automated test changes for the detail in chrome script handling for
its detail.
Differential Revision: https://phabricator.services.mozilla.com/D68311
`TSFTextStore::sHandlingKeyMsg` refers pointer of struct, but referred via
`TSFTextStore::PendingAction` so that we should make it has a copy of
`sHandlingKeyMsg` because of for async handling.
Differential Revision: https://phabricator.services.mozilla.com/D68049
Inputting Unicode scalar value with `Alt` + numpad keys is available even
without NumLock state. However, `Alt` + function key on numpad should also
be worked because user may intent to perform it. Therefore, this patch
stops the hacking for bug 1606655 when given virtual keycode value is a
function key, but this means that users cannot type a Unicode scalar value
without NumLock key state if the value includes `7` (`Home`),
`4` (`ArrowLeft`), `6` (`ArrowRight`) because Firefox UI handles they are
shortcut keys (for "Go home", "Go back" and "Go forward"). Unfortunately,
I have no idea how to solve this conflict (if it's second key or latter key
after pressing `Alt` key, we could do that with a boolean flag, but I don't
like to make it only for this kind of edge case unless a lot of users want
to do it).
Differential Revision: https://phabricator.services.mozilla.com/D63782
Custom keyboard layout may set unusual character to each numpad key. In our
shortcut and acceleration key handling, we refer alternative char code values
stored in `eKeyDown` or `eKeyPress` and they may contain an alphabet which is
used by menubar but it shouldn't be performed while user inputs a Unicode
character with `Alt` + numpad keys because it's being handled by Windows.
(In strictly speaking, I think that we shouldn't dispatch key events of the
sequence, but Chrome does it so that we should keep dispatching for web-compat.)
This patch makes `NativeKey` stores same `mCommittedCharsAndModifiers`,
`mShiftedString` and `mUnshiftedString` values as usual keyboard layout
even active keyboard layout customized numpad key values.
Note that Windows handles the key sequence without virtual key code, meaning
that even if the numpad keys are shuffled by keyboard layout, typed numbers
are computed from physical key position. E.g., even if `Numpad7` is mapped
to `1`, it's treated as `7`. Therefore, this patch refers scan code in
some places.
Differential Revision: https://phabricator.services.mozilla.com/D60805
This changeset is a simple find and replace of `MOZ_FALLTHROUGH` and `[[fallthrough]]`.
Unfortunately, the MOZ_FALLTHROUGH_ASSERT macro (to assert on case fallthrough in debug builds) is still necessary after switching from [[clang::fallthrough]] to [[fallthrough]] because:
* MOZ_ASSERT(false) followed by [[fallthrough]] triggers a -Wunreachable-code warning in DEBUG builds
* but MOZ_ASSERT(false) without [[fallthrough]] triggers a -Wimplicit-fallthrough warning in NDEBUG builds.
Differential Revision: https://phabricator.services.mozilla.com/D56440
Moved mozilla::WidgetMosueEventBase::buttonType in MouseEvents.h to mozilla::MouseButton in EventForwards.h, and mozilla::WidgetMouseEventBase::buttonsFlag to mozilla::MouseButtonsFlag so that any referer in header files do not need to include MouseEvents.h only for referring them. Instead, they just need to include EventForwards.h. Now when MouseEvents.h is changed, the rebuild speed becomes faster.
Differential Revision: https://phabricator.services.mozilla.com/D25325
We didn't dispatch keyboard events during composition. Therefore, we tried to
retrieve raw virtual keycode value when key messages come with `VK_PROCESS`
unexpectedly. However, the API, `ImmGetVirtualKey()`, is not usable for this
purpose because it always returns `VK_PROCESS` if the key messages have already
been handled by IME. So, we can just stop using it since we need to expose
such key messages as KeyboardEvent whose `key` value is `Process` and `keyCode`
value is `DOM_VK_PROCESS`.
Differential Revision: https://phabricator.services.mozilla.com/D20623
The constructor of WidgetCommandEvent takes 2 nsAtom pointers. One is for
specifying event type, the other is for specifying the command. The
difference of these arguments are pretty unclear for other developers and
the former argument is always nsGkAtoms::onAppCommand unless nullptr in
C++ code. So, we can hide the former argument.
Then, we should create another constructor for creating empty command event
from constructor of dom::CommandEvent.
Differential Revision: https://phabricator.services.mozilla.com/D2506
Currently, if an event is consumed in the main process, EventStateManager
does not send it to remote process. However, this is unexpected behavior
for some WidgetKeyboardEvent dispatchers. OS sometimes has consumed native
key events before sending applications. For example, Alt key on Windows
should activate menu bar of focused window but Alt key may be consumed before
focused window receives the event. In such case, we mark Alt keyboard event
as "consumed before dispatch", and chrome treat it like as its preventDefault()
is called in web content. (Note that for compatibility with other browsers,
the consumed state is not exposed to web content. So, Event.defaultPrevented
returns false in web content.)
Therefore, we need to treat "consumed" state and "cross process forwarding"
state separately. This patch makes calling WidgetEvent::PreventDefault()
always stops cross process forwarding for backward compatibility. Additionally,
for the special case mentioned above, this patch makes
WidgetEvent::PreventDefaultBeforeDispatch() take additional argument,
|aIfStopCrossProcessForwarding|. If this is CrossProcessForwarding::eStop,
the event won't be sent to remote process as same as calling PreventDefault().
Otherwise, CrossProcessForwarding::eHold, PreventDefaultBeforeDispatch() call
does not change "cross process forwarding" state. I.e., if the event's
StopCrossProcessForwarding() and PreventDefault() are not called until
EventStateManager::PostHandleEvent(), the event will be sent to remote process
as usual.
MozReview-Commit-ID: IQGWJvXetxV
When AltGr key is pressed, following messages come:
1. WM_KEYDOWN for ControlLeft
2. WM_KEYDOWN for AltLeft
3. WM_SYSKEYUP for ControlLeft
4. WM_KEYUP for AltLeft
In these key sequence, KeyboardEvent.key value of keydown event at #2 and keyup
event at #4 should be "AltGraph". This patch fixes the key value and
adding new test into test_keycodes.xul to check the behavior with
SynthesizeNativeKey().
MozReview-Commit-ID: JZ6WednB8la
Users can emulate AltGr key with pressing both Ctrl key and Alt key on Windows
since AltGr is represented as so in Windows and physical keyboard may not have
AltRight key.
If user emulates AltGr key, we should set MODIFIER_ALTGRAPH to a set of
keyboard events for printable keys only when the key press produces
character(s) or a dead key. For example:
1. ControlLeft keydown event should make ctrlKey true.
2. AltLeft keydown event should make altKey true (not AltGraph state).
3. ctrlKey and altKey of printable keydown, keypress and keyup events should be
set to false, but getModifierState("AltGraph") should return true.
4. AltLeft keyup event should make altKey false.
5. ControlLeft keyup event should make ctrlKey false.
(If AltLeft key is pressed first, altKey of AltLeft keydown is true and
both altKey and ctrlKey of the following ControlLeft keydown are true as
usual.)
MozReview-Commit-ID: 8Km8GXPDQw1
KeyboardLayout::InitNativeKey() takes |const ModifierKeyState&| as its
argument with NativeKey reference and it calls some internal methods with
the given ModifierKeyState without any changes. Additionally, its caller
is only NativeKey::InitWithKeyChar() and its called with given NativeKey
instance's mModKeyState. So, removing the redundant arguments from
some methods makes them clearer what they compute with.
So, this patch does not change any behavior.
MozReview-Commit-ID: 3w9Ee7PMU05
By the proposal from Google, <https://github.com/w3c/uievents/issues/147>,
Chromium treat AltRight key as "AltGraph" modifier if the keyboard layout
has AltGr key.
When AltRight key is pressed with a keyboard layout which has AltGr key,
modifiers should as following:
1. "keydown" for ControlLeft:
ctrlKey: true, altKey: false, getModifierState("AltGraph"): false
2. "keydown" for AltRight:
ctrlKey: false, altKey: false, getModifierState("AltGraph"): true
3. Some "keydown", "keypress" and "keyup" events:
ctrlKey: false, altKey: false, getModifierState("AltGraph"): true
4. "keyup" for ControlLeft:
ctrlKey: false, altKey: false, getModifierState("AltGraph"): true
5. "keyup" for AltRight:
ctrlKey: false, altKey: false, getModifierState("AltGraph"): false
So, only when the preceding "keydown" event for ControlLeft, ctrlKey should
be set to true as usual. However, after AltRight key is pressed actually,
we should treat "AltGraph" modifier is true and both ctrlKey and altKey
should be set to false for web apps can handle text input normally.
So, MODIFIER_ALTGRAPH and MODIFIER_CONTROL/MODIFIER_ALT should not be set
at the same time.
This patch makes ModifierKeyState have only MODIFIER_ALTGRAPH or
MODIFIER_CONTROL/MODIFIER_ALT.
Additionally, this patch makes VirtualKey::ShiftState treat "AltGraph" as a
modifier. So, now, VirtualKey needs to convert ShiftState to index value when
it accesses its mShiftStates array. Therefore, this patch adds
VirtualKey::ToIndex() and make each VirtualKey method use it before
accessing mShiftStates.
Note that this patch also fixes bug of WinUtils::SetupKeyModifiersSequence().
The constructor of KeyPair takes 2 keycode values, but the second virtual
keycode can have scancode to distinguish if the key is left or right.
However, WinUtils::SetupKeyModifiersSequence() never sets scancode to
KeyPair. Therefore, it fails to dispatch AltRight key event.
MozReview-Commit-ID: 7ealxJH9KlZ
For setting AltRight key's key value to "AltGraph" if it should work as so,
we need to know if current keyboard layout has AltGr key. Unfortunately,
Windows doesn't provide such information but we retrieve all input characters
from each key when a keyboard layout is loaded. So, when we load a keyboard
layout, we can mark if current keyboard layout has AltGr key with checking
at least one key inputs different character(s) when AltGr key is pressed.
MozReview-Commit-ID: 8GI3phSVTUS
Currently, TabChild discards eKeyDown and eKeyPress events which are marked as
"repeated" and were dispatched after the latest eKeyDown event comes into the
process. However, keyboard layout utils may generate native key events
as "repeated" even if each native key is important to input proper text.
So, TabChild shouldn't decide if coming keyboard event is skippable only with
mIsRepeat. For solving this issue, this patch adds
mMaybeSkippableInRemoteProcess to WidgetKeyboardEvent and makes
TabChild::SkipRepeatedKeyEvent() check
WidgetKeyboardEvent::CanSkipInRemoteProcess() instead.
On Windows, there are two ways to generate keyboard input messages. One is
using SendMessage() or PostMessage(). The other is SendInput() API. In both
ways, utils can make their input as repeated key messages.
The former case must be safe for this issue since such utils need to set 31st
bit of lParam to 1 explicitly.
On the other hand, in the latter case, the utils probably need to append
KEYEVENTF_KEYUP into KEYBDINPUT::dwFlags. Otherwise, only first call is
treated as non-repeated event.
So, when given message does not came from physical key operation, NativeKey
should set WidgetKeyboardEvent::mMaybeSkippableInRemoteProcess to false
even if WidgetKeyboardEvent::mIsRepeat is true.
MozReview-Commit-ID: 3rinrOjx8Tf
On Windows, VK_PROCESSKEY key message is sent if the key event is handled by
IME (in IMM mode or IMM-IME). Therefore, we can set
WidgetKeyboardEvent::mKeyCode to NS_VK_PROCESSKEY and
WidgetKeyboardEvent::mKeyNameIndex to KEY_NAME_INDEX_Process simply when
we receive VK_PROCESSKEY.
MozReview-Commit-ID: 9B8Q7rwfXYD
On Windows, VK_PROCESSKEY key message is sent if the key event is handled by
IME (in IMM mode or IMM-IME). Therefore, we can set
WidgetKeyboardEvent::mKeyCode to NS_VK_PROCESSKEY and
WidgetKeyboardEvent::mKeyNameIndex to KEY_NAME_INDEX_Process simply when
we receive VK_PROCESSKEY.
MozReview-Commit-ID: 9B8Q7rwfXYD
Gecko decides keyCode from an ASCII character which is produced by the key
by itself or with Shift on active keyboard layout or alternative ASCII capable
keyboard layout if active keyboard layout isn't ASCII capable. However, we've
ignored alternative ASCII capable keyboard layout's character if both the
key itself and with Shift don't produce ASCII alphabet nor ASCII numeral,
i.e., ASCII punctuation characters are not used in alternative ASCII capable
keyboard layout because of avoiding mapping a keyCode value to 2 or more keys.
However, setting 0 to keyCode value makes Firefox unusable with some web
applications which are aware of neither KeyboardEvent.key nor
KeyboardEvent.code. So, even if we map same keyCode value to a key, we should
avoid setting keyCode value to 0 as far as possible.
This patch's approach is, we behave same keyCode value as the alternative ASCII
capable keyCode is selected when computed keyCode value of active keyboard
layout is 0. This means that we will make some language users whose keyboard
layout for their language is not ASCII capable can use global web services
which support US keyboard layout of Firefox since the new keyCode values
are mostly computed with US layout on Windows or actual alternative ASCII
capable keyboard layout on macOS and Linux. In other words, we cannot improve
compatibility with web applications which don't support Firefox by this patch
since our keyCode values are really different from Chrome's. So, unfortunately,
if we'd use exactly same keyCode computation as Chromium, we'd break
compatibility with existing web applications which are aware of Firefox since
it's necessary to check UA name or something before using keyCode values.
Note that the most important difference between Windows and the others is,
such keyCode value is computed with alternative ASCII capable keyboard
layout on macOS and Linux but only on Windows, it's computed with OEM virtual
keycode. This means that only on Windows, the keyCode value may be different
from actual alternative ASCII capable keyboard layout's keyCode.
MozReview-Commit-ID: As289r9wp6i
This does not remove the directives in widget/ContentCache.cpp as those crash
annotations should be temporary and will be removed once bug 1405832 is fixed.
MozReview-Commit-ID: F0STyYDx8F4
inline functions are supposed to be declared in the header file, so the compiler can inline them.
gcc complains about this, but clang/msvc apparently do not.
We also needed to move the DeadKey struct and class into the header, as the function calls a
method on the DeadKey class, and you can't do that on a forward declared class.
MozReview-Commit-ID: 8NxP59AXuZi
The intention of these macros here is merely to log a warning and enable
a developer to notice the inconsistency. Pass the result to Unused.
MozReview-Commit-ID: 9IOuwQ3InVm
(Path is actually r=froydnj.)
Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of
nsISupports. This means that nsAtom is now a better name for it than nsIAtom.
MozReview-Commit-ID: 91U22X2NydP
This patch merges nsAtom into nsIAtom. For the moment, both names can be used
interchangeably due to a typedef. The patch also devirtualizes nsIAtom, by
making it not inherit from nsISupports, removing NS_DECL_NSIATOM, and dropping
the use of NS_IMETHOD_. It also removes nsIAtom's IIDs.
These changes trigger knock-on changes throughout the codebase, changing the
types of lots of things as follows.
- nsCOMPtr<nsIAtom> --> RefPtr<nsIAtom>
- nsCOMArray<nsIAtom> --> nsTArray<RefPtr<nsIAtom>>
- Count() --> Length()
- ObjectAt() --> ElementAt()
- AppendObject() --> AppendElement()
- RemoveObjectAt() --> RemoveElementAt()
- ns*Hashtable<nsISupportsHashKey, ...> -->
ns*Hashtable<nsRefPtrHashKey<nsIAtom>, ...>
- nsInterfaceHashtable<T, nsIAtom> --> nsRefPtrHashtable<T, nsIAtom>
- This requires adding a Get() method to nsRefPtrHashtable that it lacks but
nsInterfaceHashtable has.
- nsCOMPtr<nsIMutableArray> --> nsTArray<RefPtr<nsIAtom>>
- nsArrayBase::Create() --> nsTArray()
- GetLength() --> Length()
- do_QueryElementAt() --> operator[]
The patch also has some changes to Rust code that manipulates nsIAtom.
MozReview-Commit-ID: DykOl8aEnUJ
Starting from 52, NativeKey::HandleCharMessage() ignores all control characters. However, some keyboard layout utilities may send WM_CHAR message whose wParam is '\r' for emulating pressing Enter key. For supporting such utilities, we should dispatch Enter keypress event when HandleCharMessage() receives such event.
Note that this patch does NOT support a pair of WM_KEYDOWN and WM_CHAR whose wParam is '\r' but the WM_KEYDOWN isn't VK_RETURN. If there is such case, we need to support it too. However, it needs a lot of code changes. So, we shouldn't support it until such bug is filed actually.
MozReview-Commit-ID: CWyvBtLmXgg
Some IME may handle WM_KEYDOWN message before application and may set the keycode value to VK_PROCSSKEY but not do actually. Similarly, IME may handle WM_KEYDOWN message and replace following WM_CHAR messages with different characters.
Therefore, even if WM_KEYDOWN message comes with VK_PROCESSKEY, NativeKey shouldn't stop dispatching keypress events if it detects following printable char messages.
MozReview-Commit-ID: DcC2qgcLDrQ
Ctrl+Space causes WM_CHAR of ' '. On the other native applications, you can input ' ' with this key combination though, we shouldn't allow this because we need to remove Ctrl and Alt modifier state at dispatching keypress event for the limitation of TextEditor but this is important key combination for custom shortcut keys.
So, when Ctrl or Alt key is pressed but it doesn't change the inputting character, i.e., the character can be inputted without Ctrl or Alt, we shouldn't remove those modifier state from eKeyPress event.
MozReview-Commit-ID: 7omLvNdQWzW
In PresShell, eContextMenu event is marked as dispatched only in chrome when its shiftKey state is true. However, Shift+F10 causes the context menu, it should not be marked as so because this is standard shortcut key to open context menu on Windows.
This patch consumes Shift key state if previous key message is WM_SYSKEYDOWN of F10 before dispatching eContextMenu event. So, user cannot block to prevent its default at opening context menu with Shift+F10, we should discuss this later.
MozReview-Commit-ID: 1P9LpeJoQof
According to crash reports, we may find WM_CHAR whose wParam is 0 and scancode is 0xFF with a call of PeekMessage(PM_NOREMOVE) but we'll remove usual char message with a call of PeekMessage(PM_REMOVE).
In such case, we should ignore the found odd message and take the usual char message which was removed from the queue actually.
MozReview-Commit-ID: Gw8LvCXxul
Currently, we use alias NS_VK_* for WidgetKeyboardEvent::mKeyCode. Similarly, we should create alias enum for nsIDOMKeyEvent::DOM_KEY_LOCATION_*. Then, we can reduce the length and avoid to include nsIDOMKeyEvent in some cpp files.
MozReview-Commit-ID: 5cs4zQ061Lc
I think that when PeekMessage(PM_REMOVE) failed to remove a char message but next key message is still a char message, it may be possible that the odd keyboard layout or utility hook only PeekMessage(PM_NOREMOVE) and GetMessage(). If so, we can explain what occurs in this case.
I'm still not sure this fixes the case of bug 1336322 comment 0, but we should try to do this because I don't have better idea.
MozReview-Commit-ID: CxoO24n167t
This patch depends on bug 1336080.
When PeekMessage() fails to remove found char message, NativeKey::GetFollowingCharMessage() tries to check next key message in the queue again. Then, when next key message becomes non-char message, such as WM_KEYDOWN or WM_KEYUP, the char message must be removed by odd keyboard layout or something. Similarly, when next key message is a char message but it's caused by different key, the found char message must be removed by one of them too.
So, in these cases, NativeKey::GetFollowingCharMessage() should treat the key operation is already handled or canceled by the odd keyboard layout or somebody else. Additionally, in the latter case, following char message should be handled as orphan char message(s) as usual.
MozReview-Commit-ID: 8ahs8I0HUQ2
When NativeKey::GetFollowingCharMessage() tries to remove a char message from the queue, the message might be changed by odd keyboard layout or something. In such case, if the new char message is also caused by same physical key, the char message must be overwritten. Then, we should take the new char message instead.
Note that this patch saves original found char message into kFoundCharMsg and it's logged by each points for indicating if this case has occurred.
MozReview-Commit-ID: HAduq8sfwFt
NativeKey::GetFollowingCharMessage() may remove a char message which is different from previously found message in the queue because hacky keyboard layout or utility can overwrite the wParam when it's removed from the queue.
Now, we should assume that newer message, i.e., actually removed from the queue, is the expected message by the user. See bug 1336028 comment 0 for the actual scenarios which are collected by crash reports.
https://bugzilla.mozilla.org/show_bug.cgi?id=1336028#c0
MozReview-Commit-ID: 9ZgukHH1vfi
Currently, NativeKey::GetFollowingCharMessage() tries 5 times to remove found char message from the queue. It was enough when we found this issue at developing Metrofox.
However, this hack is not enough for some odd keyboard layouts because we see some crash reports which gives up to remove a char message from the queue because 5 WM_NULL messages are returned.
For preventing this crash, we should check if there is the message which is trying to remove from the queue when NativeKey receives WM_NULL. Then, when there is no key message in the queue or next key message becomes non-char message,, NativeKey should dispatch consumed keydown event because we can assume that the key operation may have already been handled or canceled. Otherwise, NativeKey should retry to remove the message again (until 50 times!, it's just enough big magic number, there is no concrete reason).
MozReview-Commit-ID: 1c6Y4OoQdrP
