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Fix Fomantic UI's touchstart fastclick, always use click for click events (#23065)

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Using `touchstart` for `click` events is a black magic for mobile
browsers (Google: `fastclick`).

However, it causes many UX problems if the fastclick is used without
careful design.

Fomantic UI uses this fastclick for its `dimmer` and `dropdown`, it
makes mobile users feel strange when they "touch" the dropdown menu.


This PR uses a simple patch to fix that behavior. Then the Fomantic
dropdown only uses `click` for click events.

This PR is simple enough and won't cause hidden bugs even if the patch
doesn't work. In the future, if there are more patches for Fomantic UI,
the patches could be placed in a directory like
`web_src/fomantic/patches/001-fix-click-touchstart`, etc.


![image](https://user-images.githubusercontent.com/2114189/220551915-bd28e8cc-507f-43c7-bb4a-b24f7ff3934d.png)

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
wxiaoguang 2023-02-27 22:43:04 +08:00 committed by GitHub
parent 611705888f
commit 303b72c2d1
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 4 additions and 2 deletions
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2
Makefile
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@ -859,6 +859,8 @@ fomantic:
cp -f $(FOMANTIC_WORK_DIR)/theme.config.less $(FOMANTIC_WORK_DIR)/node_modules/fomantic-ui/src/theme.config
cp -rf $(FOMANTIC_WORK_DIR)/_site $(FOMANTIC_WORK_DIR)/node_modules/fomantic-ui/src/
cd $(FOMANTIC_WORK_DIR) && npx gulp -f node_modules/fomantic-ui/gulpfile.js build
# fomantic uses "touchstart" as click event for some browsers, it's not ideal, so we force fomantic to always use "click" as click event
$(SED_INPLACE) -e 's/clickEvent[ \t]*=/clickEvent = "click", unstableClickEvent =/g' $(FOMANTIC_WORK_DIR)/build/semantic.js
$(SED_INPLACE) -e 's/\r//g' $(FOMANTIC_WORK_DIR)/build/semantic.css $(FOMANTIC_WORK_DIR)/build/semantic.js
rm -f $(FOMANTIC_WORK_DIR)/build/*.min.*

4
web_src/fomantic/build/semantic.js generated
View file

@ -2118,7 +2118,7 @@ $.fn.dimmer = function(parameters) {
moduleNamespace = 'module-' + namespace,
moduleSelector = $allModules.selector || '',
clickEvent = ('ontouchstart' in document.documentElement)
clickEvent = "click", unstableClickEvent = ('ontouchstart' in document.documentElement)
? 'touchstart'
: 'click',
@ -2850,7 +2850,7 @@ $.fn.dropdown = function(parameters) {
moduleSelector = $allModules.selector || '',
hasTouch = ('ontouchstart' in document.documentElement),
clickEvent = hasTouch
clickEvent = "click", unstableClickEvent = hasTouch
? 'touchstart'
: 'click',