xterms send a bitmask (+ 1) in the 2nd CSI parameter if "special"
keys (arrow keys, pgup/down, etc) are sent with modifiers held down.
Serenity's Terminal used to send ^[[O, which is a nonexistent
escape sequence and a misread of VT100's ^[O (ie the '[' is
replaced by 'O'). Since the xterm scheme also supports shift
and alt modifiers, switch to that.
More flexible, and makes ctrl-left/right and alt-left/right work
in SerenityOS's bash port.
Also do this for page up/down.
No behavior change for SerenityOS's Shell.
Else, we store an empty but allocated string for each Attribute after a
href was emitted (since it's ended by a non-null empty string), which
makes Line objects very expensive to destroy and to modify.
Reduces `disasm /bin/id` from 414ms to 380ms (min-of-5). There's
a lot more perf wins to be had with better href handling (most
lines don't have any hrefs, so instead of storing a string per
Attr, maybe we could have a vector of hrefs per line and int offsets
into that in each Attr for example), but this is a simple, obvious,
and effective improvement, so let's start with this.
This makes Terminal::scroll_up() O(1) instead of O(n) in the
size of the history. (It's still O(n) in the size of visible
lines.)
Reduces time to run `disasm /bin/id` with the default terminal
window size from 530ms to 409ms (min-of-5) on my system.
This patch adds GUI::FocusEvent which has a GUI::FocusSource.
The focus source is one of three things:
- Programmatic
- Mouse
- Keyboard
This allows receivers of focus events to implement different behaviors
depending on how they receive/lose focus.
During app teardown, the Application object may be destroyed before
something else, and so having Application::the() return a reference was
obscuring the truth about its lifetime.
This patch makes the API more honest by returning a pointer. While
this makes call sites look a bit more sketchy, do note that the global
Application pointer only becomes null during app teardown.
Get rid of the weird old signature:
- int StringType::to_int(bool& ok) const
And replace it with sensible new signature:
- Optional<int> StringType::to_int() const
You can now request an update of the terminal's window progress by
sending this escape sequence:
<esc>]9;<value>;<max_value>;<escape><backslash>
I'm sure we can find many interesting uses for this! :^)
And move canonicalized_path() to a static method on LexicalPath.
This is to make it clear that FileSystemPath/canonicalized_path() only
perform *lexical* canonicalization.
To conserve memory, we now use byte storage for terminal lines until we
encounter a non-ASCII codepoint. At that point, we transparently switch
to UTF-32 storage for that one line.
Instead of relying on the GUI code to handle UTF-8, we now process
and parse the incoming data into 32-bit codepoints ourselves.
This means that you can now show emojis in the terminal and they will
only take up one character cell each. :^)
You can now drag a hyperlink as a text/uri-list. This allows you to
drag a file from "ls" output and drop it on a FileManager to copy
the file there. Truly futuristic stuff!
