This must be a regression of bug 1213589. When removing whole text from an editor, the editor removes moz-<br> after removing all nodes. Immediately before the remove, moz-<br> becomes <br>. So, IMEContentObserver::AttributeChanged() detects the native text length for the <br> element changing from 0 to 2 (on Windows) or 1 (on the other platforms). However, the call of ContentEventHandler::GetFlatTextLengthInRange() in IMEContentObserver::AttributeChanged() returns 2 (on Windows) or 1 (on the other platforms). Although, it tries to get the length from the start of the editor to before aElement, it always includes the length of the line breaker caused by the end node.
The reason is, ContentEventHandler::GetFlatTextLengthInRange() always adds the line breaker's length for the end node without checking the range includes open tag of the end node. Therefore, this patch adds the check into ContentEventHandler::GetFlatTextLengthInRange(). So, ContentEventHandler::GetFlatTextLengthInRange() becomes to support NodePositionBefore() for the end of the range.
Additionally, this patch fixes a bug at appending text node length. In the loop, |aEndPosition| shouldn't be referred because it may be hacked with |endPosition|. So, detecting the last text node should be compared with |endPosition|.
For making the method code safer, this changes whole |aEndPosition| after defining |endPosition| is replaced with |endPosition|.
MozReview-Commit-ID: FUp2nxuQHnO
--HG--
extra : rebase_source : 611992faf95082ce8ae005b7bcce90a3bea4f99e
TextComposition::GetSelectionStartOffset() tries to query the start offset of the composition if there is a composition. Therefore, it tries to query first clause when it has some clause information of the composition string. However, even if the composition string is empty, TextComposition::mRanges which refers CompositionEvent::mRanges of the last eCompositionChange event may have empty clause information. In such case, this method tries to query not existing IME selection range. Then, this returns UINT32_MAX and ContentCacheInChild will query character rects around the offset and ContentEventHandler::SetRangeFromFlatTextOffset() will meet odd case.
For avoiding this issue, TextComposition::GetSelectionStartOffset() should query normal selection when composition string in the editor is empty. Note that TextComposition::mString will be updated after the editor completes updating its DOM contents. Therefore, TextComposition should refer mLastData which is set before dispatching eCompositionChange in the tree.
MozReview-Commit-ID: F2UGCQLXLSz
--HG--
extra : rebase_source : 0349a74f20f0948afa9989552a88047788aa1585
This patch implements some helper methods to log constants related to event handling.
ToString(KeyNameIndex) and ToString(CodeNameIndex) converts the enum itmes to human readable string. They use WidgetKeyboardEvent's helper class which returns Unicode text. Therefore, this need to convert from UTF16 to UTF8. That's the reason why these methods don't return |const char*|.
GetDOMKeyCodeName(uint32_t) returns DOM keycode name if it's defined. Otherwise, returns hexadecimal value. For generating switch-case statement, VirtualKeyCodeList.h shouldn't include ",". Therefore, this patch removes "," from VirtualKeyCodeList.h and append it at defining NS_DEFINE_VK. Additionally, the last item of enum and array should not end with ",". Therefore, this adds dummy last item at each of them. Finally, some of the keyCode values are shared between 2 keys. Therefore, it needs to support NS_DISALLOW_SAME_KEYCODE for switch-case generator. See the comment in the file for more detail.
GetModifiersName(Modifiers) returns all modifier names included in the given value.
MozReview-Commit-ID: 9i2ftFOTpDn
--HG--
extra : rebase_source : 458a4d28624dc10dd4454f2e7708d746d1fcb045
Currently, ContentEventHandler::OnQueryTextRectArray() is used only in e10s mode (at caching necessary character rects in ContentCacheInChild). Therefore, this bug occurs only in e10s mode.
ContentEventHandler::OnQueryTextRectArray() applies CSS transform only to each frame rect. Therefore, character rect's width and height are not applied.
This patch makes the loop apply CSS transform to each character or line breaker rect (i.e., each item of charRects). Then, we need to rewrite the lastCharRect hack. It stores the last charRect value for computing next line breaker rect if next line breaker is caused by a block level element or something, i.e., not caused by a <br> frame. So, when brRect is computed with lastCharRect, the loop needs to apply CSS transform of the last text frame to the following brRect because it tries to compute a caret rect immediately after the last character. For doing this, this patch adds lastFrame which stores the last frame for lastCharRect and set it to baseFrame. Then, at applying CSS transform to each charRect, it can apply CSS transform of expected frame.
Similarly, when brRect is computed with last text frame, this patch looks for the last text frame from lastTextContent and use it as base frame to apply to CSS transform.
MozReview-Commit-ID: 5Yr2HMrooHd
--HG--
extra : rebase_source : fa643f442036d9167a1df3a4383b0802a1729a3e
This change avoids lots of false positives for Coverity's CHECKED_RETURN
warning, caused by NS_WARN_IF's current use in both statement-style and
expression-style.
In the case where the code within the NS_WARN_IF has side-effects, I made the
following change.
> NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));
> -->
> Unused << NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));
In the case where the code within the NS_WARN_IF lacks side-effects, I made the
following change.
> NS_WARN_IF(!condWithoutSideEffects);
> -->
> NS_WARNING_ASSERTION(condWithoutSideEffects, "msg");
This has two improvements.
- The condition is not evaluated in non-debug builds.
- The sense of the condition is inverted to the familiar "this condition should
be true" sense used in assertions.
A common variation on the side-effect-free case is the following.
> nsresult rv = Fn();
> NS_WARN_IF_(NS_FAILED(rv));
> -->
> DebugOnly<nsresult rv> = Fn();
> NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Fn failed");
--HG--
extra : rebase_source : 58788245021096efa8372a9dc1d597a611d45611
They are non-standard aliases for "DragEvent" and "KeyboardEvent" that
are not supported by any other UA, and we would like to drop support.
So first let's stop using them ourselves, so we can use telemetry to see
if any sites are using them.
MozReview-Commit-ID: ICC33ORa2st
This patch adds a MOZ_ASSERT. I'll try to pass it through try, and otherwise
turn it into a warning, I guess.
MozReview-Commit-ID: 9KZS6dh3wzw
--HG--
extra : rebase_source : 263cc55878fde3cea1fc0184cda4b3118e38d134
The patch is generated from following command:
rgrep -l unused.h|xargs sed -i -e s,mozilla/unused.h,mozilla/Unused.h,
MozReview-Commit-ID: AtLcWApZfES
--HG--
rename : mfbt/unused.h => mfbt/Unused.h
This patch makes GetBounds(), GetScreenBounds() and GetClientBounds() more
obviously infallible, like existing functions such as GetNaturalBounds() and
GetClientSize(). This results in clearer behaviour in nsCocoaWindow.mm if
Objective C exceptions occur. Along the way, the patch removes some useless
failure checks for these functions.
The patch also removes the NS_IMETHOD from GetRestoredBounds and makes that
function MOZ_MUST_USE.
First, when the first node causing text is invisible, OnQueryTextRect() still fails even with this patch. We shouldn't fix it in this bug because it's unusual case but this bug is very important especially for some web service using HTML editor like Gmail.
This patch fixes all cases when the start offset of queried range reaches the end of mRootContent.
1. When the last node causing text is a <br> element (either content <br> element or moz-<br> element), its frame is a placeholder for empty line. Therefore, this patch sets the rect to the frame rect.
2. When the last node causing text is a text node, the last frame generated for it represents its line (including empty line). Therefore, this patch sets the rect to the result of GetLineBreakerRectAfter().
3. When the last node causes a line breaker before it, the frame may be a placeholder for it (this is not usual case, when user types Enter key at the end of <p> element, <p><br></p> is generated by Gecko). In this case, this patch sets a possible caret rect which is guessed from the content box of the frame and its font height.
4. When there are no nodes causing text in mRootContent, this patch sets a possible caret rect like case #3.
MozReview-Commit-ID: FS9cWJQ39DK
--HG--
extra : rebase_source : cb2ea4cfb4c8d5c85a4dd7498aa11bd86b61c2ef
Similar to OnQueryTextRect(), OnQueryTextRectArray() should compute a line breaker's rect with the last character when it's the first character in queried range and not caused by <br> frame.
MozReview-Commit-ID: CGDHbcrc6zB
--HG--
extra : rebase_source : 7e7cad1aebc4b1c675360a1a1ff6e704d17c4e5c
When queried range starts with a block frame, we cannot compute proper line breaker's rect at its open tag only with the frame's rect because the proper rect should be at the end of previous text frame.
Therefore, this patch makes SetRangeFromFlatTextOffset() return the last text node found at scanning the range. Then, OnQueryTextRect() can compute the first line breaker's rect with it (if there is at least one text node).
However, if the last text node is hidden by CSS or something, this patch won't work. We need to do something in another bug for hidden frame's issue, though. But note that IME typically doesn't request hidden text's rect because neither selection nor composition string is in such range.
MozReview-Commit-ID: 2FFzNoubJ1y
--HG--
extra : rebase_source : b9c4af40b8747f19da8e55434d580e29322c9601
In plain text editor, moz-<br> element is appended for a placeholder of empty line when the text ends with a line breaker. Therefore, when we compute text rects, we need to handle it same as a normal <br> element even though it doesn't cause any text.
MozReview-Commit-ID: 4IXLafU6o0W
--HG--
extra : rebase_source : 5db9c70e3acd40e4f47f35fcf293702ce0fb0295
Although, this patch is pretty big and complicated, but I have no idea to separate this since this rewrites all over the OnQueryTextRect() with new utility methods which are implemented for OnQueryTextRectArray().
Currently, OnQueryTextRect() doesn't support line breaks before block level elements. Therefore, in HTML editors, eQueryTextRect may not work fine if the range includes open tags of block level elements. This causes odd positioning of IME's candidate window in non-e10s mode.
This implements ContentEventHandler::GetLastFrameHavingFlatTextInRange() which scans the given range from last to first. However, this hits wrong NS_ASSERTION() in nsContentIterator::Last(). mLast can be nullptr if there is no content but Init() returns NS_OK even in such case. I think that returning NS_OK is fine because it's not illegal case. Therefore this patch fixes the wrong assertion.
MozReview-Commit-ID: E6OnIA1eMou
--HG--
extra : rebase_source : e44114b6fb0024c2ab7f9101b12335de4b5cc4aa
When the loop in ContentEventHandler::OnQueryTextRectArray() reaches at the end of contents, it should append a caret rect at the end of the contents. That helps deciding popup position of IME when caret is at the end of the contents.
This patch guesses the caret rect with eQueryTextRect event (for avoiding the dependency of native caret position of eQueryCaretRect event handler).
MozReview-Commit-ID: 8cGeHpkzX9g
--HG--
extra : rebase_source : c7adc65ccf0fefa7cb1c3bd0b056dc04f8a85b3e
This is hack for returning better rect for a line breaker caused by non-<br> element. E.g., if a block frame causes a line break, after the last visible character is the best position, i.e., there is |<p>ABC</p><p>DEF</p>| and the caret is after "C", querying next character's rect should be computed with "C"'s rect, rather than computed with next <p> element's border rect.
MozReview-Commit-ID: 7nXt74GGpNf
--HG--
extra : rebase_source : 14807e98cc9a6be22e6168570a299abf0ecaf267
If it returns frames which don't cause text, the caller needs complicated loop. So, it should return only frames which causes some text.
MozReview-Commit-ID: 9gny0w1PUMa
--HG--
extra : rebase_source : 423c7b57355d659e1a5bd96dac35060cae38801c
If line breakers in a text node works as is, e.g., |white-space: pre;| is specified, we need to handle line breakers in text frames too.
This patch handles "\n" in text nodes same as line breakers caused by some elements.
MozReview-Commit-ID: JmXesusFxzR
--HG--
extra : rebase_source : dca28a6e4661eef3c8a102916c451e0f021bf6d5
If the query range starts middle of a line breaker, i.e., "\r[\n", ContentEventHandler::OnQueryTextRectArray() does not need to (in other words, should not) append same rect anymore.
This patch checks if the range starts middle of a line breaker and in such case, skip to append same rect.
MozReview-Commit-ID: H5gdtAakGcP
--HG--
extra : rebase_source : 3afaca4d6e9f09e2054c4a6bd876635cfef6c58c
Some elements causes a line break before itself. In such case, OnQueryTextRectArray() should append one or two rects for such line breakers.
This patch also implements GetLineBreakerRectBefore(). It computes line breaker rect for the given frame. Even if it's a <br> frame, we cannot use its rect because <br> frame height is computed with line height but we need text's height (i.e., font height) and both height and width are 0 if it's in quirks mode and in non-empty line. Therefore, this patch computes it with frame's baseline, font's max-ascent and max-descent.
Although, this patch computes a line breaker rect caused by a open tag of a block level element with block frame's rect. However, it shouldn't be used actually as far as possible. Following patches will kill the path to the hack.
MozReview-Commit-ID: 9cym04j9NH9
--HG--
extra : rebase_source : 3117d68f056dc69550a16f52adade82049ba8277
