UIEvent.isChar is not supported by the other browsers and the value isn't initialized any platforms except on macOS. So, the value isn't useful and we have no reason to keep it.
MozReview-Commit-ID: 4BLpo88gSZj
This patch makes ContentCache store previous character's rect of selection anchor and selection focus because if caret is at end of a line, IME may query the last character of the line.
MozReview-Commit-ID: 5X1K8KtrYfl
TextComposition needs to query first IME selection. Therefore, we need to add support to query special selection range with eQuerySelectedText.
First, WidgetQueryContentEvent::mInput should have mSelectionType which should be initialized with InitForQuerySelectedText() but unfortunately, there is no method for eQuerySelectedText. Therefore, this patch initializes WidgetQueryContentEvent::mInit::mSelectionType with SelectionType::eNormal in its constructor.
Next, ContentEventHandler needs to support to handle eQuerySelectedText with special selection types. However, we need to create 2 paths in some cases, one is for normal selection and the other is for special selections because there are no selection ranges may be usual case for special selections but not so for normal selection. Therefore, ContentEventHandler::InitCommon() becomes a little bit more complicated. ContentEventHandler::mSelection and ContentEventHandler::mFirstSelectedRange is initialized with the specified selection type but normal selection type is also necessary to compute the selection root since the selection root is computed from the first selected range which may not be anywhere if its selection type is not normal.
Finally, ContentEventHandler::OnQuerySelectedText() returns "there are no selections" as succeeded case in special selection type cases.
MozReview-Commit-ID: 9WzUx8b5piw
For making our code clearer by the stronger type check, we should change the anonymous enum for NS_TEXTRANGE_* to enum class whose name is "TextRangeType" and whose type is "RawTextRangeType" which is an alias of uint8_t.
Additionally, this also adds some utility methods for them.
Note that some lines which are changed by this patch become over 80 characters but it will be fixed by the following patches.
MozReview-Commit-ID: 76izA1WqTkp
For reducing the instance size of WidgetKeyboardEvent, this patch also explicitly defines the type of KeyNameIndex and CodeNameIndex.
MozReview-Commit-ID: 8Iw2e8ZFOpe
And mCharCode shouldn't be compared with NS_VK_*, nsIDOMKeyEvent::DOM_VK_*. Additionally, when it's compared with a character constant, cast isn't necessary.
MozReview-Commit-ID: JMT614copjG
If a plugin process posts native key events to the widget, it needs to check if the key combination is reserved by chrome because if it's reserved by chrome, the reserved shortcut key handler should be executed and the event shouldn't be handled by the focused plugin.
This patches add eKeyDownOnPlugin and eKeyUpOnPlugin. nsXBLWindowKeyHandler will listen to them and handle them as normal keydown and keypress or keyup event. Note that these events won't be fired on content in the default event group and won't be sent to the remote process.
MozReview-Commit-ID: H5OKPLtVdr6
PluginInstanceChild needs to send native key event to the chrome process via a content process. So, IPC needs a platform independent class/struct which can store native event. This purpose is exactly same as the purpose of WidgetGUIEvent::PluginEvent. Therefore, we can use it for this case too.
This patch renames WidgetGUIEvent::PluginEvent to NativeEventData but this patch does NOT remove WidgetGUIEvent::PluginEvent. Instead of that, it's defined as an alias of NativeEventData since PluginEvent is clearer name for the original purpose and it's used by plugin module.
MozReview-Commit-ID: 3nrHfb8gk8m
