The value of `canvas.parentNode` in `sizeCanvas()`
appears to be `null` sometimes and it throwed an
exception specially when you switch images from
the images-list quickly.
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`. It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
ESLint won’t convert these automatically because it can’t rule out a
behavior difference arising from an access to a self-referential var
before it’s initialized:
> var x = (f => f())(() => x);
undefined
> let y = (f => f())(() => y);
Thrown:
ReferenceError: Cannot access 'y' before initialization
at repl:1:26
at repl:1:15
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
When Pan & Zoom (canvas) is enabled, the `v` hotkey does not work due to
`LightboxCanvas` overriding the `keydown` event. Add `v` as an option in
the new listener.
Fix#9777.
This commit fixes some modules that were erroneously left out while
transitioning app.js to webpack. This commit exposes them using
expose-loader or setting them directly to window.
This commit prepares the frontend code to be consumed by webpack.
It is a hack: In theory, modules should be declaring and importing the
modules they depend on and the globals they expose directly.
However, that requires significant per-module work, which we don't
really want to block moving our toolchain to webpack on.
So we expose the modules by setting window.varName = varName; as
needed in the js files.
This is preparation for enabling an eslint indentation configuration.
90% of these changes are just fixes for indentation errors that have
snuck into the codebase over the years; the others are more
significant reformatting to make eslint happy (that are not otherwise
actually improvements).
The one area that we do not attempt to work on here is the
"switch/case" indentation.
This commit adds support for '+' and 'Z' for "zoom in" and '-' and 'z'
for "zoom out" shortcut keys in the lightbox image viewer for Pan and
Zoom.
Fixes: #8689.
This fixes the lightbox zoom issues that occurred on some browsers
due to the units of `deltaY` being in lines rathern than pixels,
making it incredibly slow to zoom.
This makes the canvas zoom and pan feature cross-browser compatible in
a few ways:
1. Replace deprecated `mousewheel` event in favor of the similar and
cross-browser event `wheel`.
2. Create approximate substitute for `e.movementX` and `e.movementY`
values that are missing in Safari.
Hashir Sarwar
Stefan Weil
Anders Kaseorg
Marco Burstein
Armaan Ahluwalia
Shubham Dhama
Tim Abbott
Abhigyan Khaund
Brock Whittaker